矿柱流变对采空区顶板稳定性的影响  

Influence of rheology of pillar on roof of stability of mined-out area

作　　者：巨未来 王文杰[1,2] JU Weilai;WANG Wenjie(College of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan 430081,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]冶金矿产资源高效利用与造块湖北省重点实验室,湖北武汉430081

出　　处：《中国矿业》2020年第4期104-107,115,共5页China Mining Magazine

基　　金：湖北省自然科学基金资助项目资助(编号:2014CFB814)。

摘　　要：为研究岩石流变特性对采空区长期稳定的影响,基于Reissner厚板和流变力学理论构建了矿柱-顶板流变力学模型,并推导出顶板沉降位移关于流变时间的关系式;依据不同边界条件将顶板破坏过程划分为固支、固支-简支、简支和内部破坏四个阶段。研究结果表明:所建立的流变力学模型可用于对采空区稳定时间的预测,并为采空区及时处理提供参考。In order to study the influence of rheological properties of rock mass on long-term stability of minted-out area,a rheological mechanics model of pillar-roof is constructed based on Reissner thick plate and rheological mechanics theory,and the equation of subsidence displacement of roof with respect to rheological time is derived.The roof failure process is divided into four stages:clamped-clamped,clamped-pinned,pinned-pinned and internal damage stage based on the different boundary conditions.The results show that the rheological mechanics model can be applied to predict the stabilization time of mined-out area and provide reference for timely processing.

关 键 词：Reissner厚板 岩石流变 采空区 塌陷 

分 类 号：TU45[建筑科学—岩土工程]