复杂采空区注浆效果检测综合物探方法研究
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摘要
为解决复杂采空区由于层位多、结构复杂、分布区域广,采用单一的物探方法不能满足注浆效果检测需要的问题,通过室内和现场试验得到浆液结石体的物性特征,并利用电测深法、电磁波CT和地震波CT三种物探方法,对注浆处理前后的铁路路基采空区进行了检测,结合钻探资料对注浆充填情况进行了综合评价。结果表明:注浆前后,浆液充填区与未充填空洞、围岩的物性都有较大的差异;电测深法整体检测效果较好,电磁波CT和地震波CT对细部检测较为精确;检测结果总体上和钻探结果一致,说明使用综合物探方法能够得到更准确的检测结果。
In the large multilayer goaf areas,as for the complex structure and large scale,using a single geophysical prospecting method is hard to meet the needs of the grouting quality detection.In order to get the physical properties of grout sclerosis body,the laboratory and the field tests are carried out,and the comprehensive geophysical methods are used to estimate the grouting quality in the railway subgrade,which include the vertical electrical sounding(VES),electromagnetic wave CT and seismic wave CT.The comprehensive estimation is presented combined with the drilling results.The estimation results indicate that in the grouting goaf areas,there are great differences between the grout sclerosis body,the unfilled empty layer and the surrounding rock;The VES method for the overall detection,the electromagnetic CT and seismic wave CT methods for local key detection are reasonable;It's consistent between the detection results and the drilling results,so the comprehensive geophysical methods indicate the more precise results.
In the large multilayer goaf areas,as for the complex structure and large scale,using a single geophysical prospecting method is hard to meet the needs of the grouting quality detection.In order to get the physical properties of grout sclerosis body,the laboratory and the field tests are carried out,and the comprehensive geophysical methods are used to estimate the grouting quality in the railway subgrade,which include the vertical electrical sounding(VES),electromagnetic wave CT and seismic wave CT.The comprehensive estimation is presented combined with the drilling results.The estimation results indicate that in the grouting goaf areas,there are great differences between the grout sclerosis body,the unfilled empty layer and the surrounding rock;The VES method for the overall detection,the electromagnetic CT and seismic wave CT methods for local key detection are reasonable;It's consistent between the detection results and the drilling results,so the comprehensive geophysical methods indicate the more precise results.
引文
[1]American Society for Testing and Materials.Standard Guide forSelecting Surface Geophysical Methods(ASTM D6429-99)[S].West Conshohocken,Pennsylvania,1999:2～9.
[2]British Standards.British Standard Code of Practice for SiteInvestigations(BS5930)[M].British Standards Institution,1999:98～100.
[3]张志沛等.煤矿采空区注浆工程质量检测的试验研究[J].岩土工程学报,2005,27(5):604～606.
[4]童立元,刘松玉,邱钰等.高速公路下伏采空区问题国内外研究现状及进展[J].岩石力学与工程学报,2004,23(7):1198～1202.
[5]卞海洋,杜广印,童立元.高速公路下伏多层富水采空区综合物探勘察技术研究[J].公路,2007,(8):159～162.
[6]张波,王万顺等.高速公路下伏采空区治理工程质量检测方法研究[J].中国煤田地质,2004,16(5):53～57.
[7]吴圣林,丁陈建.综合检测法在采空区注浆效果检测中的应用[J].岩石力学与工程学报,2005,24(1):5271～5273.
[8]李成香,王建军,唐诗群,魏锋玲,陈文德,孟锋.应用综合物探方法探测隐伏岩溶漏斗[J].工程勘察,2008,(3):53～56.
[9]吴有信.综合物探方法在煤矿采空区及其含水性勘察中的应用[J].工程勘察,2005,(4):69～73.
[10]吴以仁.钻孔电磁波法[M].北京:地质出版社,1981.
[2]British Standards.British Standard Code of Practice for SiteInvestigations(BS5930)[M].British Standards Institution,1999:98～100.
[3]张志沛等.煤矿采空区注浆工程质量检测的试验研究[J].岩土工程学报,2005,27(5):604～606.
[4]童立元,刘松玉,邱钰等.高速公路下伏采空区问题国内外研究现状及进展[J].岩石力学与工程学报,2004,23(7):1198～1202.
[5]卞海洋,杜广印,童立元.高速公路下伏多层富水采空区综合物探勘察技术研究[J].公路,2007,(8):159～162.
[6]张波,王万顺等.高速公路下伏采空区治理工程质量检测方法研究[J].中国煤田地质,2004,16(5):53～57.
[7]吴圣林,丁陈建.综合检测法在采空区注浆效果检测中的应用[J].岩石力学与工程学报,2005,24(1):5271～5273.
[8]李成香,王建军,唐诗群,魏锋玲,陈文德,孟锋.应用综合物探方法探测隐伏岩溶漏斗[J].工程勘察,2008,(3):53～56.
[9]吴有信.综合物探方法在煤矿采空区及其含水性勘察中的应用[J].工程勘察,2005,(4):69～73.
[10]吴以仁.钻孔电磁波法[M].北京:地质出版社,1981.
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