实施疏水降压工程安全开采受底板奥灰水威胁的煤炭资源

SAFE COAL MINING UNDER THE THREAT OF ORDOVICIAN LIMESTONE WATER BY DEWATERING DEPRESSION

开滦矿务局赵各庄矿开采不断延深，受底板奥灰水威胁严重。为解放煤炭资源和充分利用地下水资源，该矿实施了流水降压工程，实现了疏供结合，获得巨大的经济效益和社会效益。本文概括总结了第一阶段的工作和效果。

In the Zhaogezhuang Mine of Kailuan Coal Mining Administration, the coal mining becomesdeeper and deeper, and under the serious threal of Ordovician system's limestone water. In order to releasethe coal resources and fully utilize the ground water resources, the Mine performed a dewatering depressionengineering, realized combinafion of dewatering and water supply and achieved obvious economic and socialbenefits. This paper summarises the work and effectiveness of first stage.