摘要
煤矿采空区探测在铁路工程的建设中具有重要意义,常规物探手段受限于抗干扰能力弱、纵向分辨率低等问题,对深埋煤层采空区的探测效果都不太理想,因而急需寻求一种有效的新型物探手段。为此,本次研究在对以往采空区探测经验进行研究和总结的基础上,针对川东地区深埋煤层采空区,首先采用地震频率谐振技术进行了探测;然后对探测成果进行分析和解释,分析研究了采空区的地球物理和空间展布特征;最后进一步对成果的深度进行标度和物性验证。钻孔结果显示,物探和钻探结果对应均较好。表明,本次研究将地震波频率谐振勘探技术应用于深埋煤层采空区的探测取得了良好的效果,对铁路隧道范围内深埋煤层采空区的探测有很重要的借鉴和指导意义。
The detection of coal gob area plays an important role in the construction of railway engineering.However,since conventional geophysical exploration methods are limited by weak anti-interference ability and low longitudinal resolution,the detection effect of the goaf with deep-buried coal seam is not ideal.Therefore,it is urgent to seek a new and effective means of geophysical exploration.To this end,based on the research and summary of the previous goaf detection experience,this study first uses the seismic frequency resonance technology to detect the goaf of deep coal seam in eastern Sichuan.Then,the exploration results are analyzed and interpreted,and the geophysical and spatial distribution characteristics of goaf are analyzed and studied.Finally,the depth scale and physical properties of the results are further verified.The drilling results show that the geophysical and drilling results correspond well.It shows that the application of seismic wave frequency resonance exploration technology to the detection of goaf in deep coal seam has achieved good results,which is of great reference and guiding significance for the detection of goaf in deep coal seams within railway tunnels.
作者
朱聪聪
李海
Zhu Congcong;Li Hai(China Railway Engineering Consulting Group Co.,Ltd.,Beijing 100055,China)
出处
《工程地球物理学报》
2021年第5期774-779,共6页
Chinese Journal of Engineering Geophysics
关键词
深埋
煤层采空区
地震频率谐振技术
deep-buried
mine goaf
seismic frequency resonance technology
