复杂老采空区上方工程建设的适宜性评价  

Suitability evaluation of engineering construction above complex old goaf

作　　者：李学良 孙光[1] 田迎斌 Li Xueliang;Sun Guang;Tian Yingbin(China Coal Science & Technology Ecological Environment Technology Co.Ltd., Beijing 100013, China;China Coal Research Institute, Beijing 100013, China;Tangshan Research Institute, China Coal Technology & Engineering Group Corp, Tangshan 063012, China)

机构地区：[1]中煤科工生态环境科技有限公司,北京100013 [2]煤炭科学研究总院,北京100013 [3]中煤科工集团唐山研究院有限公司,河北唐山063012

出　　处：《黑龙江科技大学学报》2022年第2期155-159,共5页Journal of Heilongjiang University of Science And Technology

基　　金：北京市科技计划课题项目(Z181100005118012);中煤科工创新创业资金专项重点资助项目(2018-2-ZD007)。

摘　　要：为评价复杂老采空区上方工程建设的适宜性,以山东省济宁市某复杂地质采矿条件下采空区上方拟建高层建筑物、大体型建筑物为例,结合现有地质采矿资料,从终采时间、顶板最大破坏高度、建筑荷载影响深度、采空区特征、活化影响因素、残余沉降等多个角度对老采空区场地可建性进行综合评判。研究结果表明:评价区内建(构)筑物将遭受Ⅰ~Ⅱ级的地表残余变形影响,但采空区不存在“活化”可能;在条带开采区域建筑高度不超过20 m、长壁综采区域建筑高度不超过50 m的前提下进行开发建设时,适当采取相应抗变形措施即可保证安全使用。This paper aims to evaluate the suitability of engineering construction above the complex old goaf.The study involves taking the proposed high-rise buildings and large-scale buildings as an example above the goaf under complex geological mining conditions in Jining City,Shandong Province,proposing a comprehensive evaluation of the constructability in old goaf site by consulting the existing geological mining data including the final mining time,the maximum failure height of roof,the influence/influenced depth of building load,the characteristics of goaf,the influencing factors of activation and the residual deformation from multiple angles.The results show that the effects exist from gradeⅠ-Ⅱsurface residual deformation on the buildings(structures)in the evaluation area,but no possibility of"activation"in the goaf;and the safety can be ensured by taking appropriate anti deformation measures to construct buildings given the following conditions:the building height in the strip mining area no more than 20 m and the building height in the longwall fully mechanized mining area within 50 m.

关 键 词：采空区 活化 附加应力 地基稳定性 分区 

分 类 号：TD325[矿业工程—矿井建设]