coal mine goaf 煤田采空区
abandoned mine goaf 老采空区
mine old goaf 老采空区
goaf of mine 煤矿采空区
goaf of coal mine 煤矿采空区
The result of this is referable to seismic safety in coal mine goaf.
该研究结果为煤田采空区的地震安全工作提供有益的参考。
The foundation stability and residual deformation must be evaluated before building life or service facilities above old mine goaf.
在老采空区上方建设生活或服务设施时，必须对老采空区上方地基稳定性和残余变形情况进行评价和预测。
Deformation of ground surface above old mine goaf is a complex nonlinear process, which has complex, sudden, and long-term features.
老采空区上方地表变形是一个具有复杂性、突然性和长期性等显著特点的非线性过程。
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