摘要
倾倒变形体作为一种不良地质体存在,由于其所引发的地质灾害问题时有发生,其影响在工程建设中越来越明显。在雅砻江上游某水电站坝轴线右岸上游,由于担心后期蓄水后倾倒变形岩体发生次生地质灾害危及大坝及库周人员、设施的安全,需要查清该倾倒变形体的规模以便采取处理方法,通过地震折射层析技术探测工作对倾倒变形岩体的埋藏深度做了具体的探测工作,同时结合该区域地质资料分析倾倒变形岩体的形成机制,对地震折射层析成像资料进行了综合分析,查明了测区边坡变形岩体的埋藏深度及分布情况,为工程设计提供了依据。
The dump deformation rock mass, as a kind of defective geological mass, can cause geological disasters occasionally, and its influence on engineering construction is more obvious. On the right bank of a hydropower station dam axis in Yalong River upstream, for fear that the dump deformation rock mass may lead to secondary geological hazards when impounded with water and to endanger the safety of the dam, the workers and the infrastructure nearby, it is necessary to investigate the scale of the dump deformation rock mass so as to provide the treatment approach. The burial depth of the dump deformation rock mass is obtained by using seismic rgfraction tomography, while the formation mechanism is obtained by the regional geological data analysis of the dump formation. Through the comprehensive analysis on the seismic tomography imaging data, the burial depth and the distribution of the rock deformation slope in the surveyed area are obtained, which provide the reliable basis for the engineering design.
出处
《工程勘察》
2014年第4期95-98,共4页
Geotechnical Investigation & Surveying
关键词
倾倒变形体
地震折射
层析成像
形成机制
埋藏深度
dump deformation rock mass
seismic refraction
tomography
formation mechanism
burial depth
