摘要
在煤炭采空区调查和治理活动中,物探方法能快速高效地查明其位置、范围和边界等,为综合治理提供基础依据。本文分析论述了土壤氡气测量法和瞬变电磁法对煤炭采空区的响应特征,并以山东省钢城区某工程场地煤炭采空区为研究对象,选用土壤氡气测量法和瞬变电磁法对采空区空间赋存状态开展了勘查工作并进行了钻探验证。实践结果表明,土壤氡气测量法可以在平面上比较清晰地反映煤炭采空区的边界,瞬变电磁法在纵向上对煤炭采空区分辨率较高,两种方法配合运用可以较准确地圈定煤炭采空区的分布范围及埋藏深度。
In the investigation and treatment of coal mined-out area,geophysical methods can quickly and efficiently find out its location,scope and boundary,so as to provide basic basis for comprehensive treatment.The response characteristics of coal mined-out area to soil radon measurement and time domain electromagnetic exploration is analyzed and discussed in this paper.A case study of a coal mined-out area in construction site in Gangcheng District,Shandong Province was carried out.Soil radon measurement method and transient electromagnetic method are employed to explore the spatial occurrence state of goaf,and the exploration results are verified by drilling.The study results show that soil radon measurement method can clearly reflect the boundary of coal mined-out area on the plan,and transient electromagnetic method has high resolution in the longitudinal direction in coal mined-out area.The combined application of the two methods can accurately delineate the distribution range and burial depth of coal mined-out area.
作者
李兆令
郭文建
王石
Li Zhaoling;Guo Wenjian;Wang Shi(No.5 Exploration Institute of Geology and Mineral Resources,Taian 271000,China)
出处
《工程勘察》
2022年第5期73-78,共6页
Geotechnical Investigation & Surveying
关键词
氡气
瞬变电磁
煤炭采空区
地球物理探测
radon
time domain electromagnetic
coal mined-out area
geophycial exploration
