疏水降压开采技术可行性研究

Study on feasibility of drainage and decreasing pressure method of coal mining

受永城矿区复杂水文地质条件的影响,长期以来,在防治水技术手段方面,区内各矿形成了以底板注浆改造为主要防治太灰水的技术经验,并得到广泛的应用和推广。但随着矿井开采范围的不断延伸,永城本部矿井水文地质条件已发生较大变化,目前各矿局部区域均出现太原组上段灰岩富水性弱,水压衰减性较强的特点,此次针对城郊煤矿二水平区域水文地质条件开展专项系统研究,提出了疏水降压与底板加固相结合的水害防治技术,制订研究方向,对目前底板加固技术进行优化并经济分析,确保矿井防治水工作科学、安全、经济开展。

Influenced by complicated hydrogeology conditions of Yongcheng mining area,it has accumulated rich treatment methods of limestone water in Taiyuan formation by floor grouting,which have been widely applied.With the extension of mining area,the hydrogeology conditions of Yongcheng mining area have changed.Currently,the main feature is the decreasing of water abundance and pressure of limestone water in Taiyuan formation. This paper made a research on the hydrogeology conditions of Second Level of Chengjiao Coal Mine.It proposed a feasibility connection of drainage and decreasing pressure method,and optimized floor reinforcement.It also made an economic analysis to make sure that water control can be implemented scientifically,safely and economically.