按一下以編輯母片標題樣式
2017.06 GT International
This learning material was not prepared by ADB. The views expressed in this document are the views of the author/s and do not necessarily reflect the views or policies of the Asian Development Bank or its Board of Governors, or the governments they represent. ADB does not guarantee the accuracy of the data included in this presentation and accepts no responsibility for any consequence of their use. The countries listed in this presentation do not imply any view on ADB’s part as to Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 0 sovereignty or independent status or necessarily conform to ADB’s terminology. Presentation按一下以編輯母片標題樣式 Outline
1. Environment Induced Water Challenges in Taiwan 2. Role of Reservoir and Condition of Siltation 3. Problems Caused by Typhoon Aere in 2004 4. Measures to Secure Potable Water Supply Following Storms 5. Measures to Secure Reservoir Volume for Sustainability 6. Concluding Remarks
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 1 按一下以編輯母片標題樣式
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 2 Geographic location of Taiwan 1. Environment Induced Water Challenges in Taiwan Geographic按一下以編輯母片標題樣式 location of Taiwan Russia
Mongolia North Korea Japan South Korea China
Myanmar Taiwan Laos
Thailand Philippines Vietnam
Malaysia
3 Taiwan water challenge, ADB Presentation, June 2017- RenovationIndonesia of Shihmen Reservoir for Sustainability 2017/06 3 Geographic location of Taiwan 1. Environment1. EnvironmentalInduced Water ChallengesChallenges inin TaiwanTaiwan Geographic按一下以編輯母片標題樣式 location of Taiwan
Taipei
Taichung Area: 36,188 km2 Population : 23 million Density: 639 peop/km2
Kaohsiung
4 Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 4 1. Environment Induced Water Challenges in Taiwan Environment按一下以編輯母片標題樣式 and Water Challenges
Young/Fragile High Geology & Mountain Frequent w/steep River Earthquake Slope
Water Challenges
Uneven Frequent Typhoon Rainfall w/Intense Distribution Rainfall
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 5 1. Environment1. Environmental Induced Water Challenges Challenges in in Taiwan Taiwan TaiwanChallenge Challenge 1 – Young 1- and Fragile Geology Young按一下以編輯母片標題樣式 and Fragile Geology
Stratigraphic age ≒ 2 million years
TaiwanStratigraphic water challenge, ADB Presentation, age June≒ 20172 -million Renovation of Shihmen years Reservoir for Sustainability 2017/06 6
6 1. Environment1. Environmental Induced Water Challenges Challenges in in Taiwan Taiwan Challenge 2 – Steep Slope Taiwan按一下以編輯母片標題樣式 Challenge 3- Intense Rainfall Comparison of River Slope Taiwan’s Rivers
2,400 Short Responding time 2,200 2,000 1,800
Elevation Elevation (m 1,600 Rhine River 1,400 (Europe) 1,200 1,000
800 Japan’s River ) 600 Colorado River 400 (USA) 200
200 400 600 800 1,100 1,200 1,400 Distance (km) 7 Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 7 1. Environment1. Environmental Induced Water Challenges Challenges in in Taiwan Taiwan Taiwan ChallengeChallenge 3 2– -Intense Rainfall 按一下以編輯母片標題樣式 Steep River3 ~ Slope4 Typhoons per Year
Typhoon Trami
Typhoon Soulik
Typhoon Cimaron Typhoon Usagi
Typhoon Fitow
- 3~4 typhoons per year. - High intensity, Long duration. 8 Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 8 1. Environment Induced Water Challenges in Taiwan Taiwan按一下以編輯母片標題樣式 Typhoon Rainfall Records
Rainfall Typhoon Location Ranking mm Yr. 1 3060 2009 MORAKOT Chiayi County 2 2139 2001 NARI New Taipei City Tropical Storm 3 2162 1969 Taipei City FLOSSIE 4 1987 1996 HERB Chiayi County 5 1834 1987 LYNN Taipei City 6 1774 2012 SAOLA Yilan County 7 1672 1967 CARLA Yilan County 8 1611 2008 SINLAKU Taichung City 9 1561 2005 HAITANG Pingtung County 10 1546 2004 AERE Miaoli County
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 9 Challenge 4- Uneven按一下以編輯母片標題樣式 Rainfall Distribution
Average Annual 63% Precipitation in Taiwan (1949~2006): 2,515 mm 69%
Percent of Rainfall in Region 73% Dry Season North 37% Central 31% South 18% 82% East 28%
72%
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 10 按一下以編輯母片標題樣式
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 11 2. Role of Reservoir and Condition of Siltation Water按一下以編輯母片標題樣式 Use in Taiwan Annual Rainfall Volume: 90×109m3 Total Reservoir Volume : 1.90×109m3 Unit: 109m3 Surface Runoff Ground Water Reservoir Water 7.7 5.7 4.6
Water Demand 18.0
Environmental Agriculture Potable Industry Protection 1.8 12.4 3.3 0.5
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 12 2. Role of Reservoir and Condition of Siltation Volume按一下以編輯母片標題樣式 of Main Reservoirs in Taiwan Unit: 106m3 No. Reservoir Name Initial Volume Current Volume 1 Shinshan (新 山) 10.00 9.97 2 Feitzai (翡 翠) 406.00 380.04 3 Shihmen (石 門) 309.12 204.71 4 Baoshan (寶 山) 5.47 5.50 5 Yuheshan (永和山) 29.58 30.23 6 Minder (明 德) 17.70 12.36 7 Dergi (德 基) 262.21 191.40 8 Wusher (霧 社) 150.00 44.86 9 Sunmoon Lake (日月潭) 171.62 142.56 10 Liyitan (鯉魚潭) 126.07 118.46 11 Zenyutan (仁義潭) 29.11 26.34 12 Lantan (蘭 潭) 9.80 9.80 13 Tsengwen (曾 文) 712.71 462.68 14 Nanhua (南 化) 154.41 95.00 15 Wushantou (烏山頭) 168.83 78.28 16 Mutan (牡 丹) 31.18 26.41 17 Chengkung (成 功) 1.08 1.21 SUM - 2,594.89 1,839.81 Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 13 2. Role of Reservoir and Condition of Siltation Location按一下以編輯母片標題樣式 of Shihmen Reservoir
Taipei
Shihmen Reservoir
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 14 2. Role of Reservoir and Condition of Siltation A View按一下以編輯母片標題樣式 of Shihmen Reservoir
Drainage Area: 763 km2 Completed: 1963
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 15 Plan View of Original Outlet 2. Role of Reservoir and Condition of Siltation Structures按一下以編輯母片標題樣式 of Shihmen Reservoir
Shihmen Canal
Penstock Power Plant PRO Spillway
Shihmen After Bay Reservoir
Tunnel Spillway
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 16 2. Role of Reservoir and Condition of Siltation Current按一下以編輯母片標題樣式 Water Budget of Shihmen Reservoir
Current Reservoir Volume: 200×106m3
6 3 Average Annual Inflow Average Annual Outflow (10 m ) 6 3 (10 m ) Irrigation Potable Water Flood Discharge
456 400 1,560 710 850
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 17 2. Role of Reservoir and Condition of Siltation Shihmen按一下以編輯母片標題樣式 Reservoir Discharge Structures
Designed Based on Traditional Approach Small bottom outlet Large spillway
Intake Elevation Design Capacity Structure (m) (cms) Diversion Tunnel EL. 135.0 4,700 (plugged) Permanent River • Store Turbid EL. 169.5 34.0 Severe Outlet Water Reservoir Power Intake EL. 169.5 [email protected]=137.2 • Discharge Siltation Irrigation Canal EL. 193.5 18.4 Clear Water Tunnel Spillway EL. 220.0 2@1,200=2,400 Spillway EL. 235.0 11,400
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 18 按一下以編輯母片標題樣式
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 19 3. Problems Caused by Typhoon Aere in 2004 Facts 按一下以編輯母片標題樣式About Typhoon Aere
Date of Occurrence: August 24 and 25, 2004 Average Basin Rainfall: 973 mm Total Inflow Volume: 742 Ⅹ 106m3 Peak Inflow Discharge: 8,600 cms Peak Outflow Discharge: 6,270 cms
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 20 3. Problems Caused by Typhoon Aere in 2004 View 按一下以編輯母片標題樣式of Turbid Reservoir After the Storm
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 21 View of Log Accumulation in 3. Problems Caused by Typhoon Aere in 2004 Upstream按一下以編輯母片標題樣式 Reach
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 22 View of Floating Debris in 3. Problems Caused by Typhoon Aere in 2004 艾利颱風衍生問題 the Reservoir按一下以編輯母片標題樣式 壹、面臨問題－表層異重流與漂流木及雜物
艾利颱洪後9月2日拍攝流木及漂浮物運移至大壩附近
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 23 26 View of Log Accumulation 3. Problems Caused by Typhoon Aere in 2004 Near按一下以編輯母片標題樣式 the Dam
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 24 3. Problems Caused by Typhoon Aere in 2004 Spillway按一下以編輯母片標題樣式 Discharge During Aere
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 25 3. Problems Caused by Typhoon Aere in 2004 Mudflow按一下以編輯母片標題樣式 in Penstock
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 26 3. Problems Caused by Typhoon Aere in 2004 No Tap按一下以編輯母片標題樣式 Water After Typhoon Aere
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 27 Problems with Turbine & Valve 3. Problems Caused by Typhoon Aere in 2004 按一下以編輯母片標題樣式
Guide Vane Wicket Gate
PRO Damage PRO Repair Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 28 3. Problems Caused by Typhoon Excavated Logs in Front of Power Intake Aere in 2004 按一下以編輯母片標題樣式#1 Intake #2 Intake
PRO Intake 3.7m 2.62m
約EL.181.78M Q1 Q5 約EL.178.07M 約EL.178.05M 約EL.176.5M Q1 Q5 2m 2m 約EL.183.28M 約EL.176.6M 約EL.178.12M Q Q2 Q4 約EL.178.12M Q2 4 Q3 約EL.181.78M Q3 約EL.179.36M 約EL.180.41M 約EL.175.12M 2m 2m 約EL.180.92M 約EL.181.18M 2m 2m 約EL.179.97M 約EL.181.02M Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 29 29 約EL.180.91M PRO Trashrack Damages 3. Problems Caused by Typhoon Aere in 2004 Caused按一下以編輯母片標題樣式 by Log/Mud Blockage
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 30 3. Problems Caused by Typhoon Aere in 2004 Density按一下以編輯母片標題樣式 Current in a Reservoir
Turbid渾水明流 Flow 異重流潛入斷面Plunge Point
Q 1 Water Floating聚集漂浮物 Debris 庫水位Level h Deposits of bed 0 異重流引起的回流 表層排水 Q3 load 三角洲淤積& coarse Delta, 渾水界面 material (推移載及懸浮載淤積) 漸昇高， Q2＜Q1 Bottom Density底層異重流 Current 洩水孔 Q 2
＋ ＝ 漸下降，Q2＞Q1 (Q3 Q2) Q1
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 31 3. Problems Caused by Typhoon Aere in 2004 Turbidity按一下以編輯母片標題樣式 Variation at Shihmen Canal Intake Following Typhoon Aere
240 235 9/1
230 10/8 9/10
225
9/20
220 (m) 9/30
215 標高
210 Settling rate: 1~3 cm/hr Elevation (m) Elevation 205 200 195 1 10 100 1000 10000 100000 1000000
濁度Turbidity(N.T.U.) (N.T.U )
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 32 3. Problems Caused by Typhoon Aere in 2004 Turbidity at Different Location in Shihmen按一下以編輯母片標題樣式 Reservoir Following Typhoon Aere
240
235 9/5排洪隧道 230 9/5大灣坪
225 9/5石門大圳取水口
220
(m)
215 標高 210
205
200
195 1 10 100 1000 10000 100000 1000000
濁度(N.T.U.)
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 33 3. Problems Caused by Typhoon Aere in 2004 Problems按一下以編輯母片標題樣式 Caused by Typhoon Aere
Turbidity of water at intake too high to be purified Reservoir siltation of 27.88Ⅹ106m3 , caused permanent reduction in water supply capability Submerged debris clogged intake structures affecting normal operations of intake and hydro units Discharge capacity can not handle PMF, causing safety concern
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 34 3. Problems Caused by Typhoon Aere in 2004 Siltation按一下以編輯母片標題樣式 Caused by Major Typhoon Events
Yr. Typhoon Deposition 年度 颱風名稱 淤積量(m3) 1963.05~1964.03 Gloria 葛樂禮 1,947 1969.05~1970.06 Elsie 艾爾西 503 1971.06~1972.12 Bess 貝 絲 523 1984.11~1985.11 Nelson 尼爾森 369.5 1995.11~1996.11 Herb 賀 伯 867 2004.03~2004.12 Aere 艾 利 2,788.4 2006.12~2007.12 Krosa 柯羅莎 962.4 Sum 7,960.3 Total Siltation 9,386.4 Sum/Total siltation (%) 84.8%
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 35 按一下以編輯母片標題樣式
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 36 4. Measures to Secure Water Supply During Typhoon Temporary按一下以編輯母片標題樣式 Measure
Constructed a floating pumping facility in the reservoir Constructed a large storage tank on the right abutment of the dam to receive flow from the pumping facility Constructed an above ground pipe with a head tank to link flow from the storage tank to existing water main The design discharge was 980,000 CMD
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 37 4. Measures to Secure Water Supply During Typhoon Floating按一下以編輯母片標題樣式 Pumping Facility (1/2)
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 38 4. Measures to Secure Water Supply During Typhoon Floating按一下以編輯母片標題樣式 Pumping Facility (2/2)
Overview of the Pumping Facility Head Tank
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 39 4. Measures to Secure Water Supply During Typhoon Above按一下以編輯母片標題樣式 Ground Pipe w/Decoration
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 40 4. Measures to Secure Water Supply During Typhoon New 按一下以編輯母片標題樣式Permanent Intake Project Design Guidelines
Discharge Capacity: 140,000 CMD Intake Level: EL. 220、EL. 228、EL. 236 Discharge Connections Water Company's Pipeline Existing Irrigation Canal Afterbay
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 41 4. Measures to Secure Water Supply During Typhoon Overall按一下以編輯母片標題樣式 Layout of New Intake Project
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 4242 4. Measures to Secure Water Supply During Typhoon Original按一下以編輯母片標題樣式 Landscape of The New Intake
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 43 4. Measures to Secure Water Supply During Typhoon Plan按一下以編輯母片標題樣式 View of the New Intake
Shihmen Irrigation Canal
Dam Boundary
Discharge Tunnel Intake Shaft
Middle Intake Tunnel
Upper & Lower Intake Tunnels
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 4444 4. Measures to Secure Water Supply During Typhoon Section按一下以編輯母片標題樣式 View of Intake Tunnels
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 45 4. Measures to Secure Water Supply During Typhoon Section按一下以編輯母片標題樣式 View of Intake Shaft
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 46 4. Measures to Secure Water Supply During Typhoon Photos按一下以編輯母片標題樣式 of New Intake
Top Level Intake Control Room
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 47 按一下以編輯母片標題樣式
Existing Outlet Modification to Enhance Silt Sluicing New Silt-Sluicing Tunnel at Dawanping Dredged Sediment Sorting and Flushing Facilities at Amuping
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 48 5. Measures to Secure Reservoir Volume Reservoir Siltation Profile and for Sustainability Separation按一下以編輯母片標題樣式 of Material at about Section 20 d<0.04mm d>0.04mm
20
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 49 5. Measures to Secure Reservoir Volume Shihmen Reservoir Existing Outlet for Sustainability Modifications按一下以編輯母片標題樣式 to Enhance Silt Sluicing
Design Outlet Type of Modification Q (cms) Shihmen Irrigation Canal 18 － Permanent River Outlet Howell-Bunger Valve 33 (PRO) changed to Jet Flow Gate Unit 1: Bifurcation to both units Penstocks 2@68 Unit 2: Convert to silt Sluice way Q=300 cms
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 50 5. Measures to Secure Reservoir Volume for Sustainability Plan &按一下以編輯母片標題樣式 Elevation Views of Penstocks
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 51 5. Measures to Secure Reservoir Volume for Sustainability Penstock按一下以編輯母片標題樣式 Modification as A Silt Sluice Way
Power Plant
#1 Penstock
Silt Sluice Way
#2 Penstock
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 52 5. Measures to Secure Reservoir Volume for Sustainability Silt Sluice按一下以編輯母片標題樣式 Way Profile
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 53 5. Measures to Secure Reservoir Volume for Sustainability 3D View按一下以編輯母片標題樣式 of Penstock Converted Silt Sluice Way
Gate House 3.60m∮排砂 50ton 戽斗挑流 壓力鋼管 雙軌吊車 出水工
Silt Sluice Way Flip Bucket 閘門操作室 Outlet
Y型對稱 高壓滑動閘門 2.5m∮ 分歧管 2.2m(W)×2.4m(H) 射流閘門 High Pressure Slide Gate Jet Flow Gate
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 54 5. Measures to Secure Reservoir Volume Construction Photos of for Sustainability Penstock按一下以編輯母片標題樣式 Silt-Sluice Way
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 55 5. Measures to Secure Reservoir Volume for Sustainability Operation按一下以編輯母片標題樣式 of Spillway & Penstock Silt Sluice Way
Penstock Silt Sluice Way
Spillway Discharge
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 56 5. Measures to Secure Reservoir Volume for Sustainability 2013 Typhoon按一下以編輯母片標題樣式 Soulik in Shihmen Reservoir
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 57 5. Measures to Secure Reservoir Volume Location of Amuping & Dawanping for Sustainability Silt Sluice按一下以編輯母片標題樣式 Tunnels
Amuping Tunnel
Dawanping Tunnel
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 5858 5. Measures to Secure Reservoir Volume Plan View of Dawanping Tunnel for Sustainability (Q=1,600cms)按一下以編輯母片標題樣式
Afterbay
Outlet
Tunnel
Intake
Shihmen Reservoir
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 59 5. Measures to Secure Reservoir Volume for Sustainability Profile按一下以編輯母片標題樣式 of Dawanping Silt-Sluice Tunnel
4% 2% 6% 1.434% Φ12.0m EL.220.0m EL.195.0m EL.205.0m
湳仔溝：H=55.44m 317.25m 隧道段≒771.63m 2.368% Φ12.0m
Φ12.0m
消 Φ12.0m 2.368% Φ12.0mΦ12.0m 11.0m(W) ×12.0m(H) 1.434% 1.367% 能 池 EL.115.0m EL.115.0m 尾水渠道EL.142.0m≒608m 挑 79m 流 工 尾水渠道≒243.41m Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen挑流工 Reservoir for Sustainability 70m 2017/06 60 41.5m 5. Measures to Secure Reservoir Volume for Sustainability Dawanping按一下以編輯母片標題樣式 Tunnel Intake
Elephant Trunk Intake Q=1,600 cms Φ10.0m
EL.220.0m EL.195.0m EL.205.0m 象鼻引水鋼管段 入口隧道~漸變段 隧道段 61 Taiwan water challenge, ADB Presentation, June 2017- Renovation317.25m of Shihmen Reservoir for Sustainability 2017/06 61 5. Measures to Secure Reservoir Volume for Sustainability Dawanping按一下以編輯母片標題樣式 Tunnel Outlet
30.0m
W:11.0m
寬度：11.0m30.0m
0=20 EL.180m B=30m EL.142.0m
基礎開挖至岩盤面 回填無筋混凝土140kg/cm2
挑流81m
後池寬530m 62 Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 62 5. Measures to Secure Reservoir Volume for Sustainability Plan 按一下以編輯母片標題樣式View of Amuping Tunnel
Outlet
Dahan River
Tunnel
After Bay
Intake Shihmen Reservoir
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 63 5. Measures to Secure Reservoir Volume for Sustainability Amuping按一下以編輯母片標題樣式 Facility Design Concept
Dredge material upstream from section 20 Sediments deposited in this region is coarser Designed to remove 640,000 m3 of deposits of per year Estimated that roughly half of the deposits can be used as concrete aggregates. Sorting facility will be used to segregate them from fines Fine materials shall be temporarily stored in a 200,000 m3 detention basin. The material shall be flushed to the river by excess reservoir water prior to and during typhoon
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 64 5. Measures to Secure Reservoir Volume Intake & Cross-Section of for Sustainability Amuping按一下以編輯母片標題樣式 Tunnel
36.0m 80m 80m 80m 30m 40.5m
Slurry pipe A
A Q= 600 cms
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 65 5. Measures to Secure Reservoir Volume for Sustainability Profile按一下以編輯母片標題樣式 of Amuping Tunnel Total Length=4,530m
10% 2.863% EL.236.0m
EL.156m
湳仔溝H=47.44m 8m(W)×9m(H) 2.863%
隧道段≒3,565m
8m(W)×10m(H) 2.863%8m(W) ×9m(H) EL.115m 0.367%
尾水渠道及沖淤池707m Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 66 5. Measures to Secure Reservoir Volume for Sustainability Outlet按一下以編輯母片標題樣式 of Amuping Tunnel
Sorting Facility Silt Detension Basin
600m
9~11m
62m 67 Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 67 5. Measures to Secure Reservoir Volume Schematic of Amuping for Sustainability Sediment按一下以編輯母片標題樣式 Removal System Sorting Facility Reservoir Intake Tunnel Detention Basin River
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 68 5. Measures to Secure Reservoir Volume for Sustainability Maintaining按一下以編輯母片標題樣式 Reservoir Volume
Unit: 103m3
Average Annual Sediment Outflow Average Annual Power Plant Dredged Silt Sediment Sluice way Dawanping Dredging u/s PRO Sluice Through Dedging at Inflow after Power Silt Sluice from Sum way Amuping Dam Plant Tunnel Reservoir Tunnel modification 150 1,020 710 640 500 400 3,420 (4%) (30%) (21%) (19%) (15%) (12%) 3,420 55% 19% 26% 100%
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 69 5. Measures to Secure Reservoir Volume Sufficient Outflow Capacity for Sustainability for PMF按一下以編輯母片標題樣式
Outflow Capacity (cms) PMF Yr. Penstock Silt Tunnel Dawanping Silt Amuping (cms) Spillway Total Sluice way Spillway Sluice way Tunnel 1959 (original 10,900 11,400 － － － － 11,400 Planning) 1963 (After 11,750 11,400 － 2@1,200 － － 13,800 Typhoon Gloria) 2014 (3rd Dam 14,500 11,400 300 2@1,200 1,600* 600* 16,300 Safety Analysis) *Construction under planning
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 70 按一下以編輯母片標題樣式
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 71 6. Concluding Remarks Concept按一下以編輯母片標題樣式 of Sustainability
The World Commission on Environment and Development ，WCED - Our Common Future,1987
” Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their needs. ”
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 7272 What We Have Learned and 6. Concluding Remarks Our Willingness按一下以編輯母片標題樣式 to Share
Reservoir sedimentation is a key issue on water resources management in Taiwan Traditional design of small bottom outlet with large overflow spillway will cause large sediment accumulation and make a reservoir unsustainable. The design approach should be modified In addition to Shihmen Reservoir, Taiwan is also doing renovation of other reservoirs in southern region Renovation experiences learned from these reservoirs can also be implemented to existing reservoirs in other countries ADB is invited to visit Taiwan to gain a deeper understanding of the renovation works
Taiwan water challenge, ADB Presentation, June 2017- Renovation of Shihmen Reservoir for Sustainability 2017/06 73