ANNEXURE I Site Location map of M/s. Stone Plus quarry lease A-1

Transcription

1 ANNEXURE I Site Location map of M/s. quarry lease A-1

2 Quarry Lease boundary map of M/s. A-2

3 a. Introduction M/s. proposes to conduct semi mechanized open cast method quarrying for Colour granite extraction in an area of 6.53 ha in Survey No. 31, Veerabadrapeta Village, Chidikada Mandal, Visakhapatnam District, Andhra Pradesh. The Director of Mines and Geology, Hyderabad vide Notice No /R1.2/2012 dated decided in principle to grant quarry lease for a period of 20 years subject to submission of Approved Mining plan. Mining plan approved by the Deputy Director of Mines and Geology, Government of Andhra Pradesh vide Letter no. 2851/MP-VSP/2015 dated It is proposes to conduct semi mechanized open cast method quarrying for Colour granite production of 8500 m 3 /annum from the lease area. Capital proposed for the quarrying is Rs. 57 Lakhs. b. Quarry Lease Area Location M/s. proposes to conduct semi mechanized open cast quarrying for Colour granite production of 8500 m 3 /Annum. The quarry lease area of 6.53 ha is located at Survey No. 31, Veerabadrapeta Village, Chidikada Mandal, Visakhapatnam District, Andhra Pradesh. The quarry lease area falls in the Survey of India topo sheet no. 65 K/13 of Latitude 17 56'57.20"N and Longitude 82 50'35.32"E with an elevation of 123 m. The nearest Village Gadabavidi is located at a distance of 2.7 Km from the QL area in E direction. Nearest habitation is Goppuru located at a distance of 1.0 km in SE direction. Nearest Railway station is Anakapalli at a distance of 33 km in SE direction. Nearest Town is Anakapalli located at a distance of 31.7 km in SE direction. Kumdampeta to Konam road passing at a distance of 2.1 Km from the QL area in East direction. Virabadhrapuram to Goppuru road passing at a distance of 1.0 Km from the QL area in SE direction. Madugula Reserved forest is at a distance of 50 m in N direction. Sankaram RF is at a distance of 5.5 km in NW direction. Olab RF is at a distance of 6.8km in NE direction. Valabu RF is at a distance of 3.0 km in NE direction. Chidikada RF is at a distance of 5.1 km in E direction. Seasonal nala Bodderu is flowing at a distance of 1.3 km in SE direction. There is no State/national boundary, national park, wildlife/bird sanctuary and critically polluted areas within 10km radius from the quarry lease area. Details of the quarry lease area are presented in table A-1. Latitude 17 56'53.02"N 17 56'53.77"N 17 56'56.22"N 17 56'57.59"N Longitude 82 50'30.16"E 82 50'30.62"E 82 50'27.67"E 82 50'30.19"E A-3

4 17 56'59.53"N 17 57'05.76"N 17 56'52.69"N 17 56'50.96"N 82 50'33.90"E 82 50'40.78"E 82 50'36.64"E 82 50'33.72"E Table A-1 Details of the Lease area State & District Mandal Village Sy. No./ Area in Ownership of Plot No. hectares occupancy Andhra Pradesh & Visakhapatnam Chidikada Veerabadrapeta Govt Land c. Exploration 1) Already carried out: In this area the applicant has undertaken following prospecting work: 1. Preliminary study of the visual examination of granite texture, design and pattern. 2. In this area the colour granite are exposed to surface with high elevation. The rock is stretching to a length of 300 m and an average width of 210 m only. The adjacent Quarry Lease holders are excavating the blocks and are marketing. The area is a proven area and the subject area is an extrapolated of the same hill ranges. However, the applicant has to carry out detailed prospecting operations to study the economic viability of the dimensional blocks. 3. The applicant, to study the feasibility of the applied area, has collected 2 no s of sample and examined for their structural details, fabric, texture and mineral grains distribution and polish surface. The percentage of recovery is arrived to be about 25%. However the percentage of recovery is anticipated to be increased with respect to the depth and the technology to be used. 2) Future Programme of exploration: Since, the deposit is exposed of big boulders and the preliminary collections of samples and study of the rock proved to be of marketable grade, and also the presence of existing quarry adjacent to the subject area. No further exploration of the deposit is envisaged. The applicant wishes to carry out excavations and conduct regular quarrying operations in systematic manner. d. Geological Reserves The reserves are computed basing on the available sub-surface lithology of the subject area and also excavations made in the existing quarries adjacent to the subject area by other lease holders. It reveals that the sheet rock is encountered from right from surface and it extended further A-4

5 depths. However, thickness available upto 110 m level is taken for computation of proved deposit and 10m each below the proved as probable and possible deposit. The proved deposit is considered as "Reserves" and the probable & possible deposit is considered as "Resources". The reserves available in the lease are complied as stated below table A-2 Category Section Influence Distance in m (A) Table A-2 Reserves Estimation Section Volume in Area in m² m³ (AxB) (B) 25% in m³ (AxB) 0.25 Rock 75% in m³ (AxB)0.75 Proved A-A B-B C-C Sub - Total Probable A-A B-B C-C Sub - Total Possible A-A B-B C-C Sub - Total Probable & Possible Grand total Total Reserves of Colour 25 % recovery = m 3 The reserves are blocked by the 7.5 barrier zone (5462m 2 x 36m (average thickness) x 25% recovery factor) From pit slopes, the reserves blocked are 2% of the reserves blocked in buffer zone = m 3 = 983 m 3 Total Non-mineable reserves (49158m m 3 ) = m 3 Mineable Reserves Total reserves assessed - Non-mineable reserves ( m m 3 ) = m 3 A-5

6 e. Mineable reserves and life of the mine Initially, the total quantity of mineable reserves is considered as (economic) marketable reserves. In this way a total mineable reserves of m 3 are available in this QL area. The average production is proposed to obtain 8500 m 3 per year. At this rate of production, the expected life of the mine is calculated as below. Life of the quarry: Mineable reserves/annual production = /8500 = years or say 51 years. f. Quarrying Method The mining operations are carried out by open cast semi mechanization method by developing multiple benches of 6 m height. The removal of side burden consisting of soil, weathered rocks and fractured rocks is the general practice of the opening of the quarry. The side burden of soil will be removed with the help of excavators. The weathered material further loosened using blasting by utilizing gun powder as explosive. The loosed soil and weathered granite will be loaded in tippers and lifted to dump yard. Separation of Large Primary Blocks from Mother Rock by Pre-Splitting The primary cuts i.e. the lateral and horizontal cuts by diamond wire saw cuts through slaughter holes (A 50 m wire saw run gets around 600 sqm. Cut) and if situation permits by use of detonating cords a close spaced blast is performed (To leverage natural Joint). 10 m in length and 8 m in width and 6 m height Sizes are produced. The wire for Granite is made of the steel wire, sintered beds with plastics injected on the steel wire and between diamond beds in order to safeguard the steel wire from the abrasive components of granite (i.e Quartz, Feldspar, etc). The stationary diamond wire machines were born for three main purposes: Squaring and dressing of irregularly shaped blocks, preparing them for final processing in slabs and tiles. Making thickness of stone of certain width in order to utilize the best gangsaws and blocks cutter having maximum productions and profit from the processing machines. Perform automatic cuts of block into slabs of different thickness. The block can so be programmed to have a certain number of slabs each of prescribed thickness. A-6

7 Sub Division of Large Primary Block Into Secondary Block i. Once the primary blocks are dislodged from sheet rock depending up on the dislodged material secondary blocks are cut, fractures, block lines and penetrative cracks are carefully trimmed and removed by this way. ii. The commercial blocks will be trimmed so as that the sites form right angles to each other iii. The size of blocks could be formed from the ROM of this property will be in the following dimensional ranges. Gang saw sizes Cutter sizes Length : 190 to 380 cm 90 to 180 cm Width : 140 to 200 cm 60 to 90 cm Height : 120 to 170 cm 40 to 70 cm Production of commercial blocks To give a regular shape, the removed blocks are dressed with cutting and polishing face, and the other direction perpendicular to it. For this purpose also Jack Hammer drills and feather wedges are widely used. Below sizes were produced in the ratio of 1:3 and also depending upon the recovery. g. List of Machinery S. No. Type of Machinery Unit 1 Excavator 370 & Tippers 2 3 Jack Hammer Drills 6 4 Air Compressors 2 5 Water Pump 1 6 Tam rock 1 7 Wire-saw cutting machines 2 8 Slaughter 1 h. Year wise Development and production for five years 1 st Year: The First year quarrying operations will be commenced from the northern end of the Q.L applied area by cutting a bench face of 5-6 m height and advancing towards southern side from 132m R.L in the Q. L and reducing the floor level to 124 R.L. The floor level shall be kept intact and as when the mining operation advances towards southern side the bench height decreases. It is A-7

8 proposed to excavate an area of 5200 m 2 with an average thickness of 4 m. With 25% recovery a volume of 5200 m 3 saleable granite and waste of m 3 of rock mass will be removed. 2 nd year: The Second year quarrying operations will be continued from the northern end by continuing with floor level of 126m R.L and advances further southern and E-W side keeping the floor R.L 126 m intact throughout. It is proposed to cover an area of 6182 m 2 with an average thickness of 5.5 m. A volume of 8500 m 3 of salable granite is produced and a volume of m 3 of rock mass has to be handled as waste at 25% recovery. 3 rd year: The third year quarrying operations will be commenced from the northern side of the Q.L area by opening multiple benches of 6m height and shall be continued going further depths towards south of the Q.L area. During the year, the quarry operations shall be between 124m R.L. to 112m R.L with two benches simultaneously advancing, keeping the floor level as 112m. An area of 2834 m 2 shall be destructed to achieve a volume of 8500 m 3 of saleable granite with an average thickness of 12 m in multiple benches. A volume of m 3 of waste rock mass will be generated and dumped at the waste dump area. 4 th year: The fourth year quarrying operations shall be continued from the northern side of previous year working and two benches of 6m height each shall be simultaneously advanced towards south of the Q.L area. During the year, the quarry operations shall be between 124 m R.L. to 112m R.L with two benches simultaneously advancing, keeping the floor level as 112 m. An area of 2834 m 2 shall be destructed to achieve a volume of 8500 m 3 of saleable granite with an average thickness of 12 m in multiple benches. A volume of m 3 of waste rock mass will be generated and dumped at the waste dump area. 5 th year: The fifth year quarrying operations shall be continued further from the northern side of previous year working and two benches of 6m height each shall be simultaneously advanced towards south of the Q.L area. During the year, the quarry operations shall be between 124m R.L. to 112m R.L with two benches simultaneously advancing, keeping the floor level as 112 m. An area of 2834 m 2 shall be destructed to achieve a volume of 8500 m 3 of saleable granite with an average thickness of 12m in multiple benches. A volume of m 3 of waste rock mass will be generated and dumped at the waste dump area. From the five year quarrying operations a volume of m 3 rock mass will be excavated out of which m 3 dimensional granite will be recovered. A total waste of m 3 has to be A-8

9 handled including the additional waste in the form of overburden soil. Year wise production and waste generation details are presented in table A-3 S. No Year Area in m 2 Table A-3 Year wise Granite Production and Waste generation Average Volume Volume of granite thickness in m 3 25 % in m in m 3 Volume of intercalated 75 % in m 3 1 I II III IV V Total Average i. Employment Table A-4 Employment Potential S. No Description Quantity 1 Manager/ Supervisor 1 2 Mines Supervisor 1 3 Skilled Workers 10 4 Unskilled Workers 10 5 Machine Operators 2 6 Watch Man 1 Total 25 A-9

10 ANNEXURE - II Drilling and Blasting Drilling and blasting plays vital role in determining the size and shape of rough blocks. Drilling Pattern is important in developing a working face and also preparing the rough blocks suitable for their use in appropriate processing units. There are no important places in and around the area, blasting will be carried with precautionary measures. 1. Drilling Parameters i. Drill holes diameter: 74/Pmm ii. Depth and inclination of the blast holes: 3 meter in case of separation primary blocks depending on the block size. Then the drill-hole will be vertical. iii. Burden and Spacing: 1.5m X 3 m iv. Stemming and charging of the blast hole: The blast hole will be charged with 100 grams of explosives and filled with clan pills subsequently; the shot hole will be stemmed using brass stemming rods. v. Explosive type: (1) Slurry based explosives or Gun Powder. Broad Blasting parameter Drill-Hole patterns for primary and secondary smooth blasting. Uniform single line equidistant holes (line drilling) will be deployed for separation of blocks from mother rock. In the case of sheet rock the primary drilling will be in the form of equidistant vertical holes to take out blocks of Gang Saw. A-10

11 ANNEXURE - III Water Requirement Water requirement for the project is mainly for Domestic source, maintaining the green belt and also for sprinkling on the haulage roads to mitigate dust emissions. The water shall be drawn from nearby villages. The water requirement of the project is presented in Table A-5. Table A-5 Water Requirement S. No Water Usage Quantity KLD 1 Wet drilling operation (On production 100 Ltr/1 m 3 ) Water sprinkling on haul 1Ltr/Sq.Mt (500 m 2 )+1/4 th for waste dump Ltr/Head (25 No s) Green 0.2 KL for 0.06 ha 2 times a day 0.4 Total 5.8 Site Services It is proposed to provide the site services like mine office and other statutory constructions like rest shelter, first aid, work shed and drinking water as required at the quarry lease area. Drinking water will be supplied to the workers from the bore well opened in the adjacent agricultural field or from nearby village. A-11

12 Solid Wastes Generation and Management Plan ANNEXURE IV During five years operations a total rock mass m 3 will be excavated and m 3 of granite blocks will be recoverable from this rock mass and remaining material of about m 3 will go as waste. Solid waste generated year wise for first five years plan as below Table A-6. Table A-6 Solid waste generated year wise S. No. Year Total waste generated m 3 1 I Year II Year III Year IV Year V Year Total waste generated for five years Dump Area During plan period about m 3 of granite waste will be produced this will be dumped over an area of 7500 m 2 in Northern direction within lease area. By the end of lease period total waste produced will be dumped in an area of ha to a height of 30 m. Step dumping will be resorted. This material can be utilized to fill the pits after quarry operations are over. When the dumps reach their optimum height suitable greenery will be grown on these dumps to stabilize them. A-12