深层采空区勘察工作方法探讨——以鲁西莱芜官厂村煤矿采空区为例

Study on Exploration Nethods in Deep Goaf——Setting Guanchangcun Coal Mine in Laiwu District in Western Shandong as an Example

深层煤矿采空区因开采深度大,地层条件复杂,造成勘察难度大、风险高。鲁西莱芜官厂村地区存在开采深度480~870m的深层煤矿采空区,为了查明深层采空区分布情况及存在的安全隐患,采用了采空区调查、地表变形监测、地面物探、钻探、井内物探等多种手段对采空区进行综合勘察,基本查明了深层采空区的分布、规模等地质特征。为深层采空区治理及工程建设提供可靠的技术支持,为类似工程条件下深层煤矿采空区勘察提供有效借鉴。

Due to large mining depth and complex stratigraphic conditions in the deep goaf,the survey is difficult and risky.There are deep goafs with a mining depth of 480~870m in Guanchangcun area in Laiwu city.In order to find out the distribution of deep goafs and potential safety hazards comprehensively,goaf area has been explored by using the goaf survey,surface deformation monitoring,ground geophysical prospecting,inwell geophysical prospecting,drilling and other means.Geological characteristics,such as the distribution and scale of the deep goaf have been basically identified.Various working methods will improve the survey accuracy of deep coal mine goaf.It will provide reliable technical support for deep goaf treatment and engineering construction,and provide an effective reference for the exploration of deep coal mine goaf under similar engineering conditions.