Abstract
In karst regions, leakage issues have consistently been pivotal to the success or failure of dam and reservoir construction projects. The spatial complexity and dynamic evolutionary nature of karst development determine the intricacy of karst leakage problems. This paper analyzes the leakage characteristics of the Lanxi Reservoir, beginning with an introduction to the engineering geological and hydrogeological conditions of the study area. Through comprehensive investigation of groundwater dynamics and physicochemical properties, the patterns and pathways of karst leakage are synthesized, leading to the conclusion that the primary leakage channels in the study area consist of solution fissures and underground river conduits, with the main leakage pathways situated within the contact zone between C3mp2 and C3mp1. By analyzing and evaluating typical karst reservoir leakage projects, this study provides experiential guidance for similar engineering undertakings.
Full Text
Analysis of Leakage Characteristics of Lanxi Reservoir in Guizhou Province
Tang Songxuan, Pei Xiongwei, Han Xiao, Ye Jianlong, He Rui
PowerChina Guiyang Engineering Corporation Limited, Guiyang 550081, China
Abstract
In karst regions, leakage issues have always been critical to the success or failure of dam and reservoir construction projects. The spatial complexity and dynamic evolution of karst development determine the intricate nature of karst leakage problems. This paper analyzes the leakage characteristics of Lanxi Reservoir in Guizhou Province. It first introduces the engineering geological and hydrogeological conditions of the study area, then comprehensively investigates the forms and pathways of karst leakage through integrated analysis of groundwater dynamics and physicochemical characteristics. The study concludes that the primary leakage channels are solution fissures and underground river conduits, with the main pathways located at the contact zone between C3mp2 and C3mp1. Through this analysis of a typical karst reservoir leakage project, the findings provide valuable reference for similar engineering endeavors.
Keywords: karst area; leakage; groundwater temperature; groundwater electrical conductivity; drilling water level