采动覆岩动态运移对地表沉陷的影响  

Impact of dynamic movement process of mining-induced overburden on surface subsidence

作　　者：李佳臻 杨志涛 刘刚 傅永帅 张峰 Li Jiazhen;Yang Zhitao;Liu Gang;Fu Yongshuai;Zhang Feng(School of Mining Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China;Post-Doctoral Research Center,Baotailong New Materials Co.Ltd.,Beijing 100000,China;Department of Mining Engineering,Shanxi Institute of Technology,Yangquan 045000,China)

机构地区：[1]黑龙江科技大学矿业工程学院,哈尔滨150022 [2]宝泰隆新材料股份有限公司博士后科研工作站,北京100000 [3]山西工程技术学院矿业工程系,山西阳泉045000

出　　处：《黑龙江科技大学学报》2025年第1期26-31,共6页Journal of Heilongjiang University of Science And Technology

基　　金：黑龙江省省属高等学校基本科研业务费项目(2023-KYYWF-0513);黑龙江科技大学引进高层次人才科研启动基金项目(HKD202304)。

摘　　要：为研究采动覆岩动态运移对地表沉陷的影响,采用数值模拟方法着重分析了采动主关键层和地表下沉过程中的下沉拐点及最大下沉点的变化规律。结果表明:采动主关键层弯曲下沉条件下,覆岩下沉拐点连线为指向采空区的内凹曲线形态,覆岩和地表最大下沉值缓慢增大;采动主关键层破断下沉条件下,覆岩下沉拐点连线变为指向采空区的指数曲线形态,覆岩和地表最大下沉值快速变化;主关键层动态运移结构决定了地表下沉形态,主关键层破断块体不充分回转导致地表沉陷“偏态”效应。This paper describes an investigation into the impact of dynamic movement process of mining-induced overburden on surface subsidence by using numerical simulation method to analyze the changes law behind the subsidence inflection point and maximum subsidence point in the process of mining-induced primary key stratum and surface subsidence.The results show that under the condition of the mining-induced primary key stratum curving and subsiding,the connected line of the overburden inflection points is concave curve morphology directing to goaf with slow increase of the maximum subsidence value of the overburden and surface;under the condition of the mining-induced primary key stratum fracturing subsidence,the connected line of the overburden and surface subsidence inflection point is an exponential morphology directing to goaf with a quick change of the maximum subsidence value of the overburden and surface.The movement structure of the primary key stratum determines the surface′s subsidence morphology,and the insufficient rotation of the primary key stratum′s fractured rock leads to the"skewness"effect of surface subsidence.

关 键 词：采动覆岩 动态运移 地表沉陷 动态影响 

分 类 号：TD322[矿业工程—矿井建设]