Limestone curtain closure plugging lateral recharge in middle third mine of New Taoyang Coal Mine
Abstract：The 7,8,9,102 coal seam of middle third mine are threaten by high pressure water of 4 -limestone, Xu -limestone and Ordovician limestone in new Taoyang coal mine of Feicheng in Shandong province. The threaten of 4 - limestone aquifer should be solved before mining. The boundary conditions of 4 - limestone aquifer of middle third mine is that three side is resis- tivity water layer and one side is influent layer. The thinner 4 - limestone aquifer and relatively closed hydrology geology unit pro- vide natural conditions for curtain closure. After doing curtain closure of F39, F40 in south water boundary, plugging lateral re- charge successfully, and it has obvious effect on curtain, and liberating 400 million tons coal resource.
Keywords：4 - limestonecurtain closurepluglateral recharge
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 6-9 )