基于示踪试验的地下岩溶管道发育特征分析

Analysis on the Development Characteristics of Underground Karst Pipelines Based on Tracer Experiment

我国西南地区岩溶发育,岩溶管道错综复杂,给岩溶区水资源勘探及地下工程建设带来诸多难题,致使工程建设难度极大、地质灾害频发,甚至造成巨大人员及财产损失。因此,岩溶管道结构特征的探究就显得尤为重要。本文利用示踪试验,分析西南地区某岩溶发育区岩溶管道结构特征。研究表明,浓度-时间曲线波峰个数对应岩溶管道条数;根据峰的形态,可以确定管道中有无地下湖,并确定地下湖位置。研究结果可为地下水资源保护提供参考,提高地下工程安全性。

The development of karst in Southwestern China and the complexity of karst pipelines have brought many difficulties to the exploration of water resources and underground engineering construction in karst areas,resulting in great difficulty in engineering construction,frequent geological disasters,and even huge losses of personnel and property.Therefore,it is particularly important to explore the structural characteristics of karst pipelines.This paper uses tracer experiments to analyze the structural characteristics of karst pipelines in a certain karst development area in Southwestern China.Research has shown that the number of peaks in the concentration-time curve corresponds to the number of karst pipelines;according to the shape of the peaks,it can be determined whether there is a underground lake in the pipeline,and determined the location of the underground lake.The research results can provide reference for the protection of groundwater resources and improve the safety of underground engineering.