The water level of the mine bottom aquifer of Yanmazhuang Coal Mine has always stayed at a high level, seriously threatening the safety production of the mine and affecting the economic development of the mine. By implementing "ladder-type reinforcement and deep river closure grouting technique", "deep and shallow hole alternate reinforcement technique" and "deep heavy curtain grouting reinforcement technique" and other techniques, the production conditions have been improved, which lays a foundation for the construction of high production high efficiency mine, thus the coal resources threatened by water disasters can be explored rationally and the resources recovery rate can be increased.%演马庄矿矿井底板含水层水位居高不下，严重威胁着矿井的安全生产，制约着矿井经济效益的提高。技术人员通过实施“梯进加固，深部截流注浆技术”、“深浅孔交替加固技术”以及“深部帷幕注浆加固技术”等水害治理技术，改善了生产条件，为建设高产高效矿井奠定了基础，使受水害威胁严重的煤炭资源得到合理开采，提高了资源回收率。
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