Singh, K. B. and Singh, T.N. (1998) Ground Movements Over Longwall Workings in the Kamptee Coalfield, India. Engineering Geology, 50 (1-2). pp. 125-139. ISSN 0013-7952

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Subsidence investigations were conducted over three superimposed longwall panels in the Kamptee coalfield of Central India. The extracted contiguous seams were lying below a water bearing unconfined aquifer. Filling of voids with sand hydraulically was practised to avoid a sudden inrush of water into the under-ground workings through ground-movement induced cracks. The non-effective width of extraction varied between 0.55 and 0.61 times the thickness of intact rockmass in the overburden. The maximum subsidence, slope, compressive and tensile strains were 9% of extraction thickness, 6.1, 6.6 and 5.3 mm m-1, respectively. The angle of draw was influenced by the presence of a fault and composition of superincumbent strata. The ground movements lowered water table by 6.5 m in the unconfined aquifer due to the mining.

Item Type: Article
Uncontrolled Keywords: Ground movements; Longwall mining; Overburden composition; Residual subsidence; Unconfined aquifer
Subjects: Mine Subsidence
Depositing User: Dr. Satyendra Kumar Singh
Date Deposited: 14 Jan 2012 06:09
Last Modified: 14 Jan 2012 06:09

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