大埋深小规模裂隙型渗漏探测技术  

Exploration technology of deep buried small-scale fissure type leakage

作　　者：曾晓波[1] ZENG Xiao-bo(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32-34,共3页Guangxi Water Resources & Hydropower Engineering

摘　　要：在土石坝水库除险加固过程中,经常遇到小规模裂隙型渗漏。这类小规模裂隙往往具有大埋深,大部分发育在坝底及坝底和坝肩交接位置,坝肩位置布线容易受限,有时还存在坝肩渗漏。单一物探方法往往难以满足这种探测条件。综合运用高密度电法、自然电场法、K剖面法在广西上思县某水库渗漏探测,结果表明:高密度电法、自然电场法和K剖面法三者互补,可以组成有效识别土石坝大埋深小规模渗漏探测体系,为消除土石坝水库除加固过程大坝不安全因素提供重要的技术支撑。Small-scale fissure type leakage is frequently seen for a reservoir reinforcement project with earth-rock dam.These types of small-scale fissures often buried deeply,and mostly developed at dam bottom or the intersec-tion position between dam bottom and dam abutment.Wiring at abutment is prone to be limited,and there exists abutment leakage sometimes.A single geophysical exploration method often fails to meet these detection conditions.During the leakage exploration for a reservoir in Shangsi County of Guangxi,three detection methods were compre-hensively applied including high-density electric method,natural electric field method and K-profile method.The results demonstrate the three methods complement each other,constitute a detection system able to effectively iden-tify the deep buried small-scale leakage in earth-rock dam,and provide important technical support for eliminating the dam unsafe factors in the reinforcement process of earth-rock dam reservoir.

关 键 词：裂隙型渗漏 K剖面法 坝肩渗漏 

分 类 号：P631[天文地球—地质矿产勘探]