摘要
矿井水文地质类型划分是煤矿防治水工作的基础、依据,正确的分析矿井水文地质条件,确定水文地质类型,采取有效的防治水措施,是保证矿井安全生产的关键。以榆树田煤矿为例,对矿井主要充水含水层及补给条件、矿井及周边老空水分布状况、矿井涌水量、突水量、开采受水害影响程度及防治水工作的难易程度等进行了分析评价,并确定了未来3年开采下_5煤层的矿井水文地质类型,为矿井下一步的防治水工作提供技术依据。
In order to ensure safe and efficient production of first mining face of Yushutian Coal Mine, according to the relevant geological data and combined with theoretical analysis, the authors studied the overburden movement law of the first mining.Result showsed that,The main roof rock in the goaf is layered collapse, and the first top rock beam falls down with the caving of the direct roof. The initial pressure distance of the roof of the working face is about 69.3 m, and the cyclic weighting distance is about 35 m.
出处
《煤炭科技》
2017年第4期23-25,共3页
Coal Science & Technology Magazine
关键词
覆岩
运动规律
薄板理论
来压步距
overburden
movemendaw
theory of thin plates
weighting distance
