摘要
探究15号煤层覆岩导水裂隙带发育情况,是山西某煤矿开采过程中防治水工作的重点。以15112工作面为研究对象,通过在相邻工作面回风顺槽布设钻窝,设计导水裂隙带高度观测孔和对比孔,通过井下仰斜钻孔导高观测仪进行实测,确定了15112工作面15号煤层覆岩导水裂隙带高度。根据实测数据与理论预测高度数据对比,找出开采厚度与导水裂隙带高度的关系,确定了山西某煤矿导水裂隙带的发育高度为42.28 m。该实测方法可有效测定含水层下采煤裂隙带高度,研究成果可以为矿井防治水工程实践提供指导。
Exploring the development of water flowing fracture zone in overlying strata of 15#coal seam is the key of water prevention work in a coal mine of Shanxi Province.Taking No.15112 working face as the research object,through arranging the observation hole and contrast hole of the water flowing fracture zone in the drilling field of the return airway of the adjacent working faces,and through the measurement by observation instrument,the height of the water flowing fracture zone in the 15#coal seam of No.15112 working face is determined.Based on the comparison and research of the measured data and the theoretical prediction data,the relationship between the mining thickness of coal seam and the height of the water flowing fracture zone is found out,and the development height of the water flowing fracture zone in a coal mine in Shanxi Province is determined to be 42.28 m.This method can effectively measure the height of coal mining fracture zone under the aquifer,and the research results can provide guidance for the practice of mine water control engineering.
作者
杨聘卿
YANG Pin-qing(Chongqing Research Institute of China Coal Technology and Engineering Group,Chongqing 400039,China)
出处
《陕西煤炭》
2020年第4期118-122,共5页
Shaanxi Coal
基金
中煤科工集团重庆研究院自立创新引导项目:基于新型水源识别系统的水化学特征参数时空分布规律研究(2019YBXM22)。
关键词
综采工作面
导水裂隙带
现场实测
仰斜钻孔测漏法
fully mechanized mining face
water flowing fracture zone
field measurement
oblique drilling leak detection method
