隐蔽层面产状的综合勘察方法研究  

Study of integrated survey method for concealed layer occurrence

作　　者：魏宇[1] WEI Yu(Guangxi Water&Power Design Institute Co.,Ltd.,Nanning 530023,China)

机构地区：[1]广西水利电力勘测设计研究院有限责任公司,南宁530023

出　　处：《广西水利水电》2024年第3期21-26,共6页Guangxi Water Resources & Hydropower Engineering

摘　　要：为研究隐蔽层面产状的综合勘察方法,本文以洋溪水利枢纽坝址为例,针对该坝址南沱组层理不发育,劈理、节理发育及风化复杂等难点,采用工程地质测绘、钻探、钻孔电视、平硐及竖井等相结合的方法,在查清所有结构面和区域构造的基础上,通过对标志层进行三维建模并面概化,以及根据结构面的发育情况、延伸长度及区域构造产状对比进行层面与节理的辨别,最终查明了洋溪水利枢纽坝址南沱组地层产状为N12~19°E,SE∠32~45°。In order to study the integrated survey method of concealed layer occurrence,taking the dam site of Yangxi Hydraulic Complex as example,in view of the difficulties of Nantuo Formation at the dam site such as unde-veloped bedding,developed cleavage and joint,complex weathering,integrated survey method was adopted consist-ing of engineering geological mapping,drilling,borehole television,adit and shaft.On the basis of identifying all structural planes and regional structures,3D modeling and surface generalization of the marker layer were conduct-ed.According to the development and extending length of structural planes,the occurrence comparison of regional structures,layers and joints were identified,and the occurrence of Nantuo Formation at the dam site of Yangxi Hy-draulic Complex were identified to be N12~19°E,SE∠32~45°.

关 键 词：隐蔽层面产状 综合勘察方法 南沱组 洋溪水利枢纽坝址 

分 类 号：P642[天文地球—工程地质学]