![[object Object],[object Object],[object Object],[object Object],Venkat](https://image.slidesharecdn.com/phdiyear01-100429232834-phpapp02/85/geotech-studies-for-longwall-1-320.jpg)
![[object Object],From the extensive literature survey very important points related to the present topic were collected and few of them are presented in the next slides.](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Geo-Tech Studies for Longwall
- 30. Panel no.3A Panel no.8 P L A N
- 31. GDK.10A INCLINE Borehole Section showing 1 seam
- 32. GDK.10A INCLINE PANEL WISE PRODUCTION SN Panel No. Panel/Face length Coal Extraction (T) Avg. monthly prod (T) 1 1 980/150 764148 63679 2 2 990/150 756663 68787 3 3 1024/150 761927 69266 4 10 850/140 551577 55158 5 10A 555/158 434416 39492 6 11 900/110 358791 25812 7 7 955/1118 532620 33171 8 12 720/93.5 361126 51589 9 8 515/115 + 496/135 619384 51615
- 33. GDK.10A INCLINE YEAR WISE LONGWALL PRODUCTION
- 35. Longwall Equipment Specification 1 SHEARER Make Anderson Type AM – 500 DERDS chainless power track haulage with twin traction drive Weight 45T Length 12M Power 2X375 KW(500HP) Capacity 800TPH@ 3M/Min & 1600 TPH @ 6M/Min Haulage speed 0- 9 M/Min. 2 ARMOURED FLEXIBLE CONVEYOR Make Anderson Type Chain 26 MM twin inboard Power 2 X 150 KW Capacity 1000TPH Speed 1.08 M/ Sec.
- 36. Longwall Equipment Specification 3 BEAM STAGE LOADER Make Anderson Type Chain 26 MM, Twin inboard Power 150 KW Capacity 1200TPH Speed 1.15 M/ Sec. 4 LUMP BREAKER Make Becorit Power 90KW Capacity 1200TPH 5 POWER PACK Make Hauhinco Capacity Pump supplying 150 LPM(33GPM) at 300 bar Tank capacity 2x 2000 Ltrs. Coupled together Power 125 KW.( 94 HP)
- 37. Longwall Equipment Specification 6 POWERED ROOF SUPPORTS Make Meco/LW International Weight 20. 5 T Capacity 4 Leg X 800T Supply Pr. & Yield Pr. 300bar & 400 bar respectively Support height range 2.2 M to 3.3 M 7 BELT CONVEYORS MAKE Meco Huwood Capacity 1200TPH Width 1200MM Power 2 X 150 KW Huwood Chieftan type
- 38. GIST of ALL PANELS Description P. NO1 P. NO.2 P. NO.3 P. NO.10 P NO.10A P. NO.11 P. NO.7 P. NO.12 P. NO.8 P. Length (m) 980 990 1024 850 555 900 955 720 990 Face Length(m) 154.2 154.2 156.2 144 164.4 115.7 125.8 98.9 120.7 / 141 Ht.of extr. (m) 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 No.of chocks 101 101 101 94 111 78 80 66 77/90 Min. Depth (m) 154 184 215 184 166 223 247 263 268 Max. Depth (m) 203 234 272 260 228 285 297 300 322 M. fall span(m) 77.7 63.4 64.4 70.7 72.65 Avg. retreat for local fall (m) 17.94 13.8 15.92 14.9 12.9 15.26 19.1 18.4/14.4 Local fall varying (m) 10.15-26.10 6.8-26.6 7.5-24 7.4-22.5 6.6-18.8 8.6-23.4 10.7-29.5 10-25.8 / 8.5-23.7 Avg Ch Bleeding 54 48 27 25 12 10 6 4.6 / 5 Weighting zone C25-86 C21-79 C29-79 C20-71 C30-82 C22-53 C21-40 C27-53/ C39-59 Dt. of Starting 19-Oct-94 02-Jan-96 26-May-97 02-Aug-98 16-Aug-99 22-Jun-01 19-Dec-02 11-Sep-04 25-Sep-05 Dt of completion 12-Sep-95 08-Nov-96 05-Apr-98 20-Apr-99 19-Jul-00 31-Jul-02 30-Mar-04 25-May-05 10-Oct-06 Date of meshing 28-Aug-95 23-Oct-96 20-Mar-98 09-Apr-99 25-Apr-00 20-Jul-02 13-Mar-04 15-May-05 23-Sep-06 days worked 269 220 275 220 253 295 404 194 305 Avg. Retreat (m/day) 3.64 4.50 3.72 3.86 2.19 3.05 2.36 3.71 3.25 Coal extr. (T) 764148 756663 761927 551577 434416 358791 532620 361126 619384 Max. Subsi. (m) 1.59 1.5 1.2 1.19 1.98 0.6 1.3 Nil Nil Static Test % Drop downs 8.0 7.6 18.5 26.2 66.0 70.3 48.6 56.6 48.9 % Drop to Zero 0.0 0.6 2.1 4.5 26.0 35.2 13.6 8.3 5.6
- 40. GDK.10A INCLINE BREAKDOWN ANALYSIS
- 42. Face length Vs Main Fall distance
- 43. Face length Vs Periodic Fall distance
- 45. Face length Vs Weighting zone
- 47. Supports Health condition STATIC TEST RESULTS
- 49. The work of literature survey and collection of data from other longwalls of SCCL will be continued in the next Six months.
- 50. Thank you all...