摘要
由于地裂缝的形成原因多样,宽度小,展布特征特殊,采用探地雷达进行地裂缝探测,一般很难达到良好的探测效果。通过探地雷达在地下采空、活动断裂、地下水超采等3种不同原因产生的地裂缝上进行探测并取得较好波形图像的实例,介绍了从天线配置、测线布置到资料处理、图像解释等工作流程,总结了不同成因类型地裂缝的探地雷达波形特征。通过实地探孔、探槽验证,说明探地雷达法探测结果准确,探测结果准确反映了地裂缝深部的发育状况和发现新的地裂缝,对分析地裂缝的成因和机理提供了科学依据。
As ground fissures are characterized by varied geneses, small width and special distribution, the utilization of Ground Pene- trating Radar （GPR） for ground fissure exploration can hardly attain ideal exploration result. Exemplified by relatively good waveform images obtained in GPR exploration of ground fissures of three different geneses （ underground mining-out, active faults and groundwa- ter over-exploitation）, this paper describes the working procedure from antenna arrangement, survey line deployment to data proeessing and image interpretation, and sums up GPR waveform characteristics of ground fissures of different genetic types. Drilling and trench verification shows that the exploration results of GPR are accurate. The GPR exploration can accurately reflect the development situation of ground fissures in depth and detect new ground fissures, thus providing scientific basis for analyzing the genesis and mechanism of the ground fissure.
出处
《物探与化探》
CAS
CSCD
2012年第4期651-654,共4页
Geophysical and Geochemical Exploration
关键词
地裂缝
探地雷达
波形特征
活动断裂
ground fissure
Ground Penetrating Radar （GPR）
waveform characteristics
active fault
