基于Plaxis和规范的采空区稳定性分区评价  

Evaluation of stability regionalization of gob based on Plaxis and specification

作　　者：周爱红[1] 袁颖[1] 何国峰[1] 

机构地区：[1]石家庄经济学院勘查技术与工程学院,石家庄050031

出　　处：《南水北调与水利科技》2015年第4期737-741,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金资助(41301015);河北省教育厅自然科学重点项目(ZD2015073);石家庄经济学院国家自然科学基金预研基金(sjy201203)

摘　　要：以某煤矿采空区为例,利用Plaxis软件计算得到采空区稳定性分区指标的地表下沉值;其次,结合规范,计算稳定性分区指标地表倾斜值、地表水平变形值和地表曲率值,利用Surfer软件得到各指标对应的稳定性分区结果;最后,综合对比分析四个稳定性分区指标的分区结果,利用AutoCAD软件得到采空区稳定性分区综合图。对分区结果分析后发现,案例中地表下沉值和地表水平变形值对采空区稳定性分区影响较大;在自然工况下,采空区整体处于基本稳定-欠稳定状态,而在加载工况下,采空区整体处于欠稳定-不稳定状态。文中提出的方法为采空区的稳定性评价以及在采空区上进行拟建建筑物的场地选择提供了一种新思路。The surface subsidence value of stability regionalization index of a coal gob w as calculated using Plaxis. Based on the e-quations in the specification, the surface inclinat ion value, surface horizontal deformation value, and curvature value w ere calcu-lated, and the corresponding stability regionalization maps of the above four indexes were plotted using Surfer. Finally, the above stability regionalization results w ere compared and analyzed comprehensively, and the comprehensive map of stability regional-ization of the gob w as plotted using AutoCAD. The results showed that the surface subsidence value and surface horizontal de-formation value have great er influence on the stability regionalization of t he gob, and the status of entire gob is between basically stable and understable under natural w orking conditions and betw een understable and unstable under loading conditions. T he proposed approach can provide refeencefor the stability evaluation of gob and site selection of proposed building above the gob.

关 键 词：采空区 稳定性分区 PLAXIS SURFER 数值模拟 规范 

分 类 号：X45[环境科学与工程—灾害防治] P642[天文地球—工程地质学]