物探与化探
物探與化探
물탐여화탐
GEOPHYSICAL AND GEOCHEMICAL EXPLORATION
2014年
3期
610-615
,共6页
跨孔地震CT%综合物探方法%岩溶%地面塌陷%地面沉降%城市地质灾害
跨孔地震CT%綜閤物探方法%巖溶%地麵塌陷%地麵沉降%城市地質災害
과공지진CT%종합물탐방법%암용%지면탑함%지면침강%성시지질재해
cross-hole seismic CT techniques%integrated geophysical technique%karst%ground collapse%ground subsidence%city geo-logical disaster
综合运用跨孔地震CT、探地雷达、高密度电阻率法、浅层地震反射波、土壤氡浓度和波速测试6种物探方法,对广州市白云区金沙洲岩溶地面塌陷、地面沉降地质灾害进行探测,查明了该区的溶洞、土洞及构造破碎带的分布。介绍了各种方法技术,对综合物探成果进行总结,结合实例说明综合物探方法在该区的应用取得了显著效果,为地质灾害防治提供了基础地质资料。在广花盆地岩溶发育区,首次应用跨孔地震CT探测建筑物地下岩溶分布,为评价受岩溶地质灾害影响的建筑物安全提供依据。
綜閤運用跨孔地震CT、探地雷達、高密度電阻率法、淺層地震反射波、土壤氡濃度和波速測試6種物探方法,對廣州市白雲區金沙洲巖溶地麵塌陷、地麵沉降地質災害進行探測,查明瞭該區的溶洞、土洞及構造破碎帶的分佈。介紹瞭各種方法技術,對綜閤物探成果進行總結,結閤實例說明綜閤物探方法在該區的應用取得瞭顯著效果,為地質災害防治提供瞭基礎地質資料。在廣花盆地巖溶髮育區,首次應用跨孔地震CT探測建築物地下巖溶分佈,為評價受巖溶地質災害影響的建築物安全提供依據。
종합운용과공지진CT、탐지뢰체、고밀도전조솔법、천층지진반사파、토양동농도화파속측시6충물탐방법,대엄주시백운구금사주암용지면탑함、지면침강지질재해진행탐측,사명료해구적용동、토동급구조파쇄대적분포。개소료각충방법기술,대종합물탐성과진행총결,결합실례설명종합물탐방법재해구적응용취득료현저효과,위지질재해방치제공료기출지질자료。재엄화분지암용발육구,수차응용과공지진CT탐측건축물지하암용분포,위평개수암용지질재해영향적건축물안전제공의거。
With the comprehensive use of cross-hole seismic CT technique, ground penetration radar, high density resistivity method, shallow seismic reflection wave method, soil radon concentration and bore wave velocity test method, the authors detected geological hazards of karst ground collapse and ground subsidence in Jinshazhou area, Baiyun district of Guangzhou city. The distribution of karst caves, soil caves and tectonic fracture zones was detected. The authors utilized all kinds of methods and techniques and summarized the results of integrated geophysical techniques. With practical examples, it is proved that integrated geophysical techniques are efficient in the investigation of karst ground collapse and ground subsidence geological hazards, and can provide important basic data for geological disaster prevention. The first cross-hole seismic CT was applied to detecting the distribution of structures of underground karst in Guang-hua basin, thus providing a basis for the safety of structures which are affected by karst geological hazards.