沁水矿区综放开采地表动态沉陷实测规律研究

Study on measurement law of surface dynamic subsidence in fully mechanized caving mining in Qinshui Mining area

沁水县是山西省重要的煤炭生产区域之一,地处丘陵山区,综放开采容易造成严重的地表沉陷。为了掌握该区域综放开采地表沉陷动态规律,以晟泰青洼煤业有限公司2103综放工作面为研究区域,建立走向和倾向观测线各1条。采集18期地表移动数据,通过分析获得了该研究区域地表下沉值、下沉速度、超前影响角、最大下沉速度滞后角、最大下沉速度预计系数等地表沉陷动态参数。最后总结了山区煤矿综放开采的地表沉陷特征与防治建议。研究成果可为该区域的矿区生态治理与三下安全开采提供技术支持。

Qinshui County is one of the important coal production areas in Shanxi Province.It is located in hilly and mountainous areas,and fully mechanized caving mining can easily cause serious surface subsidence.In order to master the dynamic law of surface subsidence in fully mechanized caving mining in this area,taking the 2103 fully mechanized caving face of Shengtai Qingwa Coal Industry Co.,LTD as the study area,a strike line and a tendency observation line were established.The data of 18 periods of surface movement were collected,and the dynamic parameters of surface subsidence in the study area,such as surface subsidence value,subsidence velocity,leading influence Angle,maximum subsidence velocity lag Angle,and maximum subsidence velocity prediction coefficient,were obtained through analysis.Finally,the surface subsidence characteristics and prevention suggestions of fully mechanized caving mining in mountain coal mines are summarized.The research results can provide technical support for the ecological governance and safe mining of the mining area.