微动物探方法探测采空区

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英文篇名：Gob Area Detection through Microtremor Surveying 中文刊名：中国煤炭地质 英文刊名：Coal Geology of China 作者：马丽 ; 金溪 ; 贺正东 英文作者：Ma Li1 ; 2 ; Jin Xi1 and He Zhengdong1(1.Geophysical Prospecting and Surveying Team ; Shaanxi Bureau of Coal Geological Exploration ; Xian ; Shaanxi 710005 ; 2.Key Laboratory of Coal Resources Exploration and Comprehensive Utilization ; Ministry of Land and Resources ; Xian ; Shaanxi 710054) 中文关键词：天然震源 ; S波速度 ; 频散曲线 ; 瑞利波 ; 采空区 英文关键词：earthquake source ; S wave velocity ; dispersion curve ; Rayleigh wave ; gob area 出版日期：2013-05-25 机构：陕西省煤田地质局物探测量队;国土资源部煤炭勘查与综合利用重点实验室; 年：2013 期：05 出版单位：中国煤炭地质

摘要

采空区探测通常采用瞬变电磁法与地震勘探方法,前者采用人工电场,后者采用人工震源,但二者施工难度大,数据采集也困难。微动探测是从台阵微动记录的垂直分量中提取瑞利波相速度频散曲线,再通过对频散曲线的反演估算地下介质S波速度,利用其低速异常解释采空区。以铜川东坡煤矿某区的探测为例,在煤层埋深50m左右、微动探测深度100m的情况下,即解释的采空区与地面电法解释的结果高度一致。
The transient electroma gnetic prospecting and seismic prospecting are used in gob area detection generally,the former using artificial electric field while the later using artificial seismic source,thus have difficulties in operation and data acquisition.The microtremor surveying is pickup Rayleigh phase velocity dispersion curves from vertical component of microtremor array records,then through dispersion curve inversion to estimate ground media S wave velocity and using its low velocity anomaly to interpret gob area.Taking a gob area detection in a district in the Dongpo coalmine,Tongchuan as an example,under the conditions of coal buried depth about 50m,microtremor surveying depth 100m,the result is highly consistent with the result from surface electric method interpreted.

引文

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    [3]冯少孔.微动勘探技术及其在土木工程中的应用[J].岩土力学与工程学报,2003,22(6):1029-1036.