老采空区地表新建建筑物的安全设计方法  

Safety design method of new surface buildings above the old goaf

作　　者：孙世国 柏朝梅 魏帅颖 藏声涛 SUN Shiguo;BAI Chaomei;WEI Shuaiying;ZANG Shengtao(School of Civil Engineering,North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学土木工程学院,北京100144

出　　处：《陕西煤炭》2024年第6期87-91,共5页Shaanxi Coal

基　　金：中国煤炭科工集团双创资金重点项目(2022-ZD002);国家自然科学基金项目(41772335)。

摘　　要：随着全国大量地下矿山的关闭,废弃矿区土地资源开发利用已经成为城市更新改造的重要内容之一。为提高老采空区土地资源利用率,采用煤矸石作为沉陷区的回填材料,从老采空区地表新建建筑工程位置的规划、沉陷区新建建筑物地基回填设计、沉陷区新建建筑物结构设计、老采空区地表新建建筑物可行性计算4个方面研究老采空区地表新建建筑物的安全设计方法。根据地表移动变形特征,在地表选取4个典型位置进行工程建设,选择具有良好抗震性能的梁柱和框架-剪切墙作为支撑,并在此基础上按照相关标准进行改造。结果表明,在老虎台矿区老采空区上方新建建筑物不会对采空区造成二次“活化”,且在设计建筑的荷载作用下回填地基也能够保持稳定。The closure of numerous underground mines in China has caused urban renewal and transformation to prioritize the development and utilization of land resources in abandoned mining areas.In order to boost the utilization of abandoned land resources,the capacity of the coal gangue to fill the foundation is assessed.Considering the engineering plan,building structure design and feasibility calculation,a frame-shear wall structure with robust deformation resistance is feasible in the subsidence area.In light of the surface deformation characteristics,four typical locations are chosen to carry out the engineering construction.The results shows that newly built structures above the old goaf of Laohutai mining area can not cause second“vitalization”of the goaf.The gangue-filled foundation is stable under the load action of the designed buildings.

关 键 词：老采空区 残余变形 抗变形结构 结构设计 基础回填 

分 类 号：TD229[矿业工程—矿井建设]