Hydraulic conductivity changes and influencing factors in longwall overburden determined by slug tests in gob gas ventholes

International Journal of Rock Mechanics and Mining Sciences

Volumn 46, Issue 7, 2009, Pages 1162-1174

  Ozgen Karacan C ^a   Goodman, Gerrit ^a  

^a NATIONAL INSTITUTE FOR OCCUPATIONAL SAFETY AND HEALTH   (United States)

Author keywords

Gob gas ventholes; Hydraulic conductivity; Longwall mining; Methane control; Slug tests

Indexed keywords

BOREHOLES; COAL; COAL BED METHANE; COAL DEPOSITS; FRACTURE; GASES; LOCATION; METHANE; MINE ROOF CONTROL; NATURAL GAS WELLS; ROOFS; SEPARATION; WATER LEVELS;

ADVANCE RATES; BEDDING PLANES; CONDUCTIVITY CHANGES; GOB GAS VENTHOLE; LOG ANALYSIS; LONGWALL FACES; LONGWALLS; METHANE CONTROLS; PLANE SEPARATION; SLUG TEST;

HYDRAULIC CONDUCTIVITY;

BEDDING PLANE; BOREHOLE; COAL MINING; CORE LOGGING; HYDRAULIC CONDUCTIVITY; LONGWALL MINING; METHANE; OVERBURDEN; SLUG TEST; WATER LEVEL;

APPALACHIAN BASIN; NORTH AMERICA;

EID: 69349092218     PISSN: 13651609     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ijrmms.2009.02.005     Document Type: Article

References (31)

1. Mucho TP, Diamond WP, Garcia F, Byars JD, Cario SL. Implications of recent NIOSH tracer gas studies on bleeder and gob gas ventilation design. In: Proceedings of society of mining engineers annual meeting, Salt Lake City, 2000.
2. Singh MM, Kendorski FS. Strata disturbance prediction for mining beneath surface waters and waste impoundments. In: Proceedings of 1st international conference on ground control in mining, Morgantown, WV, 1981.
3. Kendorski FS. Effect of high-extraction coal mining on surface and ground waters. In: Proceedings of 12th international conference on ground control in mining, Morgantown, WV, 1993.
4. Hasenfus GJ, Johnson KL, Su DWH. A hydrogeomechanical study of overburden aquifer response to longwall mining. In: Proceedings of 7th international conference on ground control in mining, Morgantown, WV, 1988.
5. Palchik V. Formation of fractured zones in overburden due to longwall mining. Environ Geol 44 (2003) 28-38
6. Li S, Lin H, Cheng X, Wang X. Studies on distribution pattern of and methane migration mechanism in the mining-induced fracture zones in overburden strata. In: Proceedings of 24th international conference on ground control in mining, Morgantown, WV, 2005.
7. Cui X., Wang J., and Liu Y. Prediction of progressive surface subsidence above longwall coal mining using a time function. Int J Rock Mech Min Sci 38 (2001) 1057-1063
8. Luo Y. An integrated computer model for predicting surface subsidence due to underground coal mining (CISPM). PhD dissertation, Department of Mining Engineering, West Virginia University, Morgantown, WV; 1989.
9. Preusse A. Effect of face advance rates on the characteristics of subsidence processes associated with US and Germany longwall mining. In: Proceedings of 20th international conference on ground control in mining, Morgantown, WV, 2001.
10. Matetic RJ, Liu J, Elsworth D. Modeling the effects of longwall mining on the ground water system. Report Invest 9561, US Bureau of Mines, Pittsburgh; 1995.
11. Fawcett R.J., Hibberd S., and Singh R.N. An appraisal of mathematical models to predict water inflows into underground coal workings. Mine Water Environ 3 (1984) 33-54
12. Liu J., and Elsworth D. Three-dimensional effects of hydraulic conductivity enhancement and desaturation around mine panels. Int J Rock Mech Min Sci 34 (1997) 1139-1152
13. Gale W. Application of computer modeling in the understanding of caving and induced hydraulic conductivity about longwall panels. In: Proceedings on coal 2005, 6th Australasian Coal Operator's conference, Brisbane, 2005.
14. Whittles D.N., Lowndes I.S., Kingman S.W., Yates C., and Jobling S. Influence of geotechnical factors on gas flow experienced in a UK longwall coal mine panel. Int J Rock Mech Min Sci 43 (2006) 369-387
15. Whittles D.N., Lowndes I.S., Kingman S.W., Yates C., and Jobling S. The stability of methane capture boreholes around a longwall coal panel. Int J Coal Geol 71 (2007) 313-328
16. Karacan CO., Esterhuizen G.S., Schatzel S.J., and Diamond W.P. Reservoir simulation-based modeling for characterizing longwall methane emissions and gob gas venthole production. Int J Coal Geol 71 (2006) 225-245
17. Tonder G.J., and Vermeulen P.D. The applicability of slug tests in fractured rock formations. Water South Africa 31 (2005) 157-160
18. Lafhaj Z., and Shahrour I. Use of water borehole tests for the determination of the permeability of anisotrophic soils. Comp Geotech 34 (2007) 57-59
19. Hawkins J.W., and Aljoe W.W. Pseudokarst groundwater hydrologic characteristics of a mine spoil aquifer. Mine Water Environ 11 (1992) 37-52
20. Maher T.P., and Donovan J.J. Double-flow behavior observed in well tests of an extremely heterogeneous mine-spoil aquifer. Eng Geol 48 (1997) 83-99
21. Edmunds WE, Skema VW, Flint NK. Pennsylvanian. Part II: stratigraphy and sedimentary tectonics. In: Geology of Pennsylvania; 1996.
22. Ferguson H.F. Valley stress relief in the Allegheny Plateau. AAPG Bulletin 4 (1967) 63-68
23. Wyrick GG, Borchers JW. Hydrologic effects of stress relief fracturing in an Appalachian valley. US Geological Survey, Water Supply Paper 2177, Washington; 1981.
24. Stoner J, Williams DR, Buckwalter TF, Felbinger JK, Pattison KL. Water resources and the effects of coal mining, Greene County, Pennsylvania. Water Resource Report 63, Pennsylvania; 1987.
25. Palchik V. Localization of mining-induced horizontal fractures along rock layer interfaces in overburden: field measurements and prediction. Env Geol 48 (2005) 68-80
26. Faust C.R., and Mercer J.W. Evaluation of slug tests in wells containing a finite-thickness skin. Water Resour Res 20 (1984) 504-506
27. Narasimhan T.N., and Zhu M. Transient flow of water to a well in an unconfined aquifer: applicability of some conceptual models. Water Resour Res 29 (1993) 179-191
28. Moreno L., and Tsang C. Flow channeling in strongly heterogeneous porous media: a numerical study. Water Resour Res 30 (1994) 1421-1430
29. Cooper H.H., Bredehoeft J.D., and Papadopulos I.S. Response of a finite-diameter well to an instantaneous charge of water. Water Resour Res 3 (1967) 263-269
30. Bauwer H., and Rice R.C. A slug test for determining hydraulic conductivity of unconfined aquifers with completely or partially penetrating wells. Water Resour Res 12 (1976) 423-428
31. Dawson K.J., and Istok J.D. Aquifer testing: design and analysis of pumping and slug tests (1991), Lewis Pub, Chelsea, Mich