河下采煤“两带”微震监测应用研究  

Research on the Application of Microseismic Monitoring in the"Two Zones"of Coal Mining under the River

作　　者：王杰 WANG Jie(China Coal Technology and Industry Xi'an Research Institute(Group)Co.,Ltd.,Xi'an 710077,China)

机构地区：[1]中煤科工西安研究院(集团)有限公司,西安710077

出　　处：《价值工程》2024年第20期84-87,共4页Value Engineering

基　　金：煤矿井下视电阻率联合监测技术装备及示范(2020XAYDC02-04)。

摘　　要：为确定河下煤矿工作面回采后上覆岩层“两带”发育高度范围,采用微震监测技术对工作面回采前后上覆岩“两带”发育过程与高度进行了定性与定量预测,并在此基础上对传统验公式进行修正。结果表明:微震监测方法可以实现顶板“两带”发育高度的有效探测,监测得到的杨村煤矿325工作面顶板最大垮落带与裂缝带高度分别为38.5m与90.01m,满足《三下采煤规范》要求,可以实现河下安全开采。In order to determine the height range of the development of the"two zones"of the overlying strata after the mining of the Hexia coal mine,microseismic monitoring technology was used to qualitatively and quantitatively predict the development process and height of the"two zones"of the overlying strata before and after the mining of the working face.Based on this,the traditional empirical formula was modified.The results show that the microseismic monitoring method can effectively detect the development height of the"two zones"of the roof.The maximum collapse zone and crack zone heights of the 325 working face roof in Yangcun Coal Mine obtained from monitoring are 38.5m and 90.01m,respectively,which meet the requirements of the"Three Down Coal Mining Specification"and can achieve safe mining under the river.

关 键 词：河下采煤 “两带”高度 拟合公式 

分 类 号：TD325[矿业工程—矿井建设]