山区采动地表裂缝预测方法研究  

Prediction of surface fissure in high relief areas induced by underground coal mining

作　　者：韩奎峰[1,2] 康建荣[2] 王正帅[2] 吴侃[1] 

机构地区：[1]中国矿业大学国土环境与灾害监测国家测绘局重点实验室,江苏徐州221116 [2]江苏师范大学测绘学院,江苏徐州221116

出　　处：《采矿与安全工程学报》2014年第6期896-900,共5页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51074139);国土环境与灾害监测国家测绘局重点实验室开放基金项目(LEDM2011B10);江苏省高校优势学科建设工程项目

摘　　要：为客观预测山区采动地表裂缝的位置和宽度,在分析地表裂缝产生机理的基础上,以主断面上等坡度的坡段为研究对象,并以山区地表下沉、水平移动预计值为主要参数,按照矢量分解与合成法则求取坡段变形预计值,将岩土力学中的临界变形值作为地表起裂判据,进而确定采动裂缝出现的坡段及单位长度内地表裂缝宽度,最后分析了所提方法的适用性。选择山西古交嘉乐泉煤矿1208~1210对拉工作面为例进行实例分析,结果表明：坡段变形预测值和变形分布规律与实际符合较好,出现裂缝的坡段与现场勘查结果基本一致,从而验证了该方法的可行性与有效性。To objectively predict the location and width of surface fissures in high relief coal mining subsidence areas, according to the generation mechanism of surface fissures, a slope segment deformation has been predicted based on the vectors＇ decomposition and synthesis principles using the equal gradient slope segment in the main section as research object and the subsidence and horizontal movement prediction values as main parameters. Taking the critical deformation value in rock and soil mechanics as the criterion of the beginning of surface fissures, this model is used to determine the location of the slope segment of the surface fissures and the width of surface fissures per unit length induced by mining. The feasibility and effectiveness of the method are tested by a case study of the 1208~1210 double face subsidence area of Jialequan Coal Mine in Shanxi Province, which shows a good fitness between the observed results and the predicted values and distribution pattern of slope segment deformation and location of surface fissures.

关 键 词：地表裂缝 预测模型 山区开采沉陷 变形预计 煤矿塌陷区 

分 类 号：TD327[矿业工程—矿井建设]