基于微动探测法的某采空区物探工作分析

Analysis of Geophysical Prospecting Work in a Goaf Based on Microdynamic Detection Method

某矿区地表发现沉降缝,沉降范围和沉降量不断扩大,为了对地面沉降裂缝进行治理,采用微动探测法对地下空区进行预测。通过布置8条勘探线、53个物理点的微动勘察结果,测得区内Vs剖面图。结合地质剖面图对Vs图进行解译,通过反演法判断地裂缝的位置。研究表明,微动探测法在采空区地面研究中适用性较高,得出结果与钻探揭露结果基本一致。

A subsidence crack was found on the surface of a mining area,and the subsidence range and subsidence volume were expanding.In order to control the ground subsidence crack,the microdynamic detection method was used to predict the underground space.By arranging the microtremor survey results of 8 exploration lines and 53 physical points,the Vs profile diagram in the area is measured.The Vs profile dia⁃gram is interpreted in combination with the geological profile,and the location of the ground fissure is de⁃termined by the inversion method.The research shows that the microdynamic detection method has high ap⁃plicability in the ground research of goaf,and the result is basically consistent with the drilling results.