广州地铁某采空区稳定性及工程建设适宜性浅析

Analysis on the Stability and Construction Suitability of a Goaf in Guangzhou Metro

广州地铁某工程区分布有采空区,为查明采空区的分布情况,通过收集区域地质环境条件资料、现场调查走访、综合物探、钻探验证等方法,对拟建工程区及周围场地的采空区进行勘察,相互验证,共同确定采空区的范围和深度,并对采空区对工程场地稳定性进行及工程建设适宜性分析评价。工程区采空区稳定性差,工程建设适宜性差,但拟建场地通过采取相应的防治措施,处理后的场地基本适宜地铁工程建设,可为类似工程建设提供借鉴。

Goaf is distributed in a project area of Guangzhou metro.To find out the distribution of mined-out area,in this paper,through the regional geological environment information collection,field survey and comprehensive geophysical prospecting,drilling verification methods,the proposed project and the surrounding area of the mined-out area for prospecting,mutual authentication,common to determine the scope and depth of goaf,and analysis and the stability of mined-out area of engineering site construction suitability evaluation.The stability of the goaf in the engineering area is poor,and the suitability of engineering construction is poor.However,the site to be constructed is basically suitable for subway construction after taking corresponding prevention and control measures.It can be used as a guide or reference for subway construction in urban goaf.