05.EMP Manjunath
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Grey Granite Quarry Project report PROJECT REPORT & ENVIRONMENTAL MANAGEMENT PLAN 1.0 INTRODUCTION Sri Manjunath Mahantappa Shettar, S/o. Mahantappa Shettar, #1725/A, Ilkal- 587125,Hungunda Taluk, Bagalkot Dist., has applied for a Grey Granite quarry over an extent of 2 Acres 04 Guntas (2.10 Acres) of patta land in Survey No.347/1 of Kuknur Village, Yelburga Taluk, Koppal District Karnataka. 2.0 LOCATION &ACCESSIBILITY: The grey granite quarrying area over an extent of 2 Acres 04 Guntas (2.10 Acres) of patta land is located in Survey No.347/1 of Kuknur Village, Yelburga Taluk, Koppal District, Karnataka state. The said quarry area is located at about 28 km from Koppal District headquarters. The state highway connecting Koppal to Yelburga via Kuknur connect to the lease area. The nearest village is Kuknur is located at 1.0 km from the lease. The lease area is away from the main road connecting to Itagi to Kuknur village. The nearest south central railway station is at Bhanapur which is at a distance of 14 Kms. The national highway connecting Koppal to Gadag is at a distance of 14.5kms towards SSE of the lease area. The grey granite quarry is well connected from Itagi to Kuknur town by tar road. SALIENT FEATURES OF THE STUDY AREA Details of The Area: District & State Koppal, Karnataka Taluka Yelburga Village Kuknur Khasra No. / Plot No./ Block Survey No.347/1 Mine Lease Area 2 Acres 04 Guntas (2.10 Acres) Type of the Area Patta land Survey of India Toposheet No 48 M/15 Latitude N 15 028’49.6” to N 15 028’51.8” Longitude E 76 059’06.7” to E 76 059’11.6” 3.0 GEOLOGY & EXPLORATION 3.1 TOPOGRAPHY : [ This Grey Granite quarry lease is a plain area. The area is extensively worked earlier. There are working pits are situated within the lease area. The highest elevation in this area is 584mRL and the lowest elevation is 576.8mRL.The slopes are trending towards North side. A surface plan is prepared in 1: 1000 scale showing the existing features like quarry workings, Roads etc., are shown and enclosed vide plate No.3 . M/s. GLOBAL Environment & Mining Services ..1 Grey Granite Quarry Project report Regional Geology : Large parts of Karnataka are covered by granites and gneisses of different ages. Some are banded migmatites, and some others, mainly tonalitic and trondhjematic plutons. The geology of this area corresponds to the regional geology of Dharwar group. The granites are of the batholic nature. The regional stratigraphic sequence in the region is given in the Table No 3.1. Table 3.1 : Regional Geology ClospetGranites DharwarSupergroup Phyllites, slate, Greywackes, slate and tuffsEpideorite flows, pillow lavas, Ferrgineous and manganese phyllites Massive Bands of Iron formations. Peninsular Gneisses (1) Local Geology : The Applied area consists of Ornamental grey Granite. This litho unit is part of the Archaean Gneissic Complex. The general strike direction of the grey Granite formation is NW-SE with a vertical dip. The general sequence of the rock formations obtained in the area during the field visit is as given in Table 3.2. The major part of the lease area is covered by the soil on grey granite, which are the part of clospet granites. The granite is well exposed up to 5mts in the working pits. The Eastern part of the lease area is well exposed for granite. The Granite is exposed on surface here & there within as well as all around the lease area. The grey Granite in the lease area is hard and massive. The grain size is fine to medium. The soil cover is having the thickness of 0.0 to 0.5 m on granite. A Geological plan showing the granite exposures are enclosed vides Plate No. 4. The geological cross section in lease area is given in the Table No 3.2.The granite are exposed in the lease area as well as in the nearby quarries upto the depth of 30m. The granite are batholitic in nature and having great geological depth. Table 3.2: Local Geology Type of lithology Approximate depth Soil 0.0-0.5m Clospet Granite 50m (minimum) M/s. GLOBAL Environment & Mining Services ..2 Grey Granite Quarry Project report GEOLOGICAL RESERVES The geological reserves are estimated and given below. Category Granite Blocks UNFC code in m3 Geological Resources 57,484 332 Total 57,484 332 Mineable reserves of Granite Category Quantity in m3 Mineable Reserves 30,014 The resources / reserves in this area are estimated by cross sectional method. The mineralized area on cross section is measured and multiplied by the sectional influence to calculate the volume. The volume is multiplied by the Bulk density 2.6T/m3 to estimate the tonnage. The mineral reserves of granites are estimated out of indicated resources after deleting the rock blocked in the 7.5m safety barrier. 4.0 M I N I N G It is a new lease area and in these five years of the quarrying plan period it is proposed to work in most of the lease area except 7.5m safety barrier and area left for waste dump and allied activities. The granted lease area is extensively worked earlier and there are few working pits, dumps and roads. The area is well exposed by granite upto the depth of 5 – 6mts. It is proposed to produce maximum 5,281 m3 granite from this quarrying in the III-year of plan period. An open cast, other than fully mechanized quarry method, will be adopted to operate the area. The quarry is planned out in such a way by talking advantage of the geological structures especially the major sets of joints. The height of the bench shall be maintained to 6mt with the width of 6mt. The bench slope shall be maintained to 45 0. Initially drilling by pneumatic jack hammers (hole diameter is 33mm) shall be done at appropriate intervals (20-30 cms) to the desired depth. Smooth blasting is effected by using gun powder. The loose joints can be split by feather and wedges. If the joints are tight, as we go deep, the methodology will change accordingly. When the surface of a certain bench is too uneven because of exposed horizontal joints, wire saw is used to make the side cuts of the primary block. The back cut and drilling 33mm holes with the line drill does the horizontal bottom cut of the primary block and smoothly blasted with gunpowder. Then the blocks extracted to the desired size by drilling and splitting by using feather and wedges. On a fully developed flat bench and where recovery by jet burner is expected to be low, wire saw machine will be used for horizontal and vertical cutting of primary block. Further M/s. GLOBAL Environment & Mining Services ..3 Grey Granite Quarry Project report pouring the crack agent powder with water through the drill holes can split the secondary blocks. Then the final dressing will be done by drilling & feather and wedges. The waste generated from working benches shall be loaded to dumpers by excavators and front end loaders and hauled to the dumping yard. A production and development plan for the first five years of plan period is enclosed vide Plate No.6A – 6E and the movement of the benches is shown on the production and development plan enclosed vide Plate No. 7. The granite shall be either transported directly to the consumer or shall be stacked at the area earmarked for mineral storage. The waste shall be transported to the area earmarked for waste dumping. The finished product shall be sold mainly for polished slabs consume either in countries or even can be exported. 4.1.1 DEVELOPMENT: During the plan period it is expected 35,508 m3 waste may be generated, which shall be stored at 0.38 Acre earmarked area inside the lease. 4.1.2 PRODUCTION: The proposed quantities of production expected year wise are given below. Production scheme for 5 years (m3) Proposed Plan Production in period m3 I 5,281 II 3,710 III 2,999 IV 3,122 V 4,008 Total 19,120 4.1.3 ANTICIPATED LIFE OF THE MINE: The total reserves in this quarry area are 30,014 m3. It is proposed to produce 19,120 m3 during these five years of the plan period. The balance granite shall be produced in the subsequent plan period. These reserves are calculated based on present exposures and existing pits. However, the reserves may increase after detailed exploration. Hence the life of the quarry shall be 20 years. DRILLING: The drilling shall be done by deploying the tractor compressor drilling unit. M/s. GLOBAL Environment & Mining Services ..4 Grey Granite Quarry Project report 4.1.4 BLASTING: There shall not be any blasting in this area, whereas cracking agents and wire saw shall be use for production of granite blocks. Precautions to be observed during drilling and blasting: Drilling precautions : Drilling with dust extractors. Use of sharp drill bits, delivery of compressed air at optimal pressure and proper maintenance of compressor and drilling machine. Provision of ear plugs/ear muffs to drillers. Blasting precautions : There shall not be any blasting taken up in this area. 4.1.6 LIST OF MINING EQUIPMENTS: The list of the mining machineries required for mining is given in the table shown below: Sl Equipment / No of Normal handling Make Motive No. Machinery Units capacity Power Pneumatic Jack 1 2 100 Atlas Capco Diesel Hammer Drill 2 Excavator 2 200 m3/hour Volvo Diesel 3 Crane 1 20 m3 Cosmo Diesel 4 Tipper 2 10 m3 Tata Diesel 5 Tipper with tanker 1 8000 lit Tata Diesel 6 Loader 1 3.5 m3 Tata Diesel 6 Jeep 1 1+4 seat Mahindra Diesel 4.1.7 CONCEPTUAL MINING At the conceptual stage of the mining there shall be a single pit of 1.42 acres.