受顶底板双向承压水威胁煤层开采技术研究

8601面为查庄煤矿深部8层煤首采工作面，直接顶为四灰含水层，下距徐灰含水层32．8m，由于四灰、徐灰含水层岩溶裂隙发育，含水丰富，该煤层开采受顶底板双向承压水威胁，为此对该煤层安全开采进行了技术研究，通过综合手段探查条件，制定了针对性的防治水措施，实现安全开采。该面为肥城矿区开采标高最深，受承压水威胁最严重的工作面，它的成功开采，开创了肥城矿区8层煤大采深、高水压开采的先河，为同类条件下其它煤层开采奠定了较好的基础。

The study of coal mining technology with the coal seam roof and floor by two-way threat of confined water

8601 Surface Mine Cha 8 layers deep coal mining face first,direct gray top four aquifer,under the ash from the aquifer Xu 32. 8 re,as a result of the four gray,gray Xu fracture karst aquifer,aquifers rich the coal seam roof and floor by two-way threat of confined water,for the safety of the coal mining technology research carried out by means of an integrated exploration conditions, has developed specific measures to control water, the realization of safe mining. The surface elevation for most of mining Feicheng by confined water face the most serious threat to its successful exploitation of the mining area created a Feicheng 8 deep layer of coal mining, high-pressure extraction of the first of its kind, under conditions similar to other coal mining has laid a good foundation.