摘要
峡口隧道是一条位于岩溶山区的深埋特长型隧道,遭遇了历时近两年来源不明的复杂涌水过程。为查明隧道的涌水来源和充水途径,通过解读隧道区的水文地质条件,分析对比不同涌水点的水化学及氢氧同位素组成差异,查明了隧道右洞北侧涌水主要来源于二叠—三叠系岩溶含水层,其他均来自于侏罗系裂隙含水层,二叠系灰岩与泥盆系石英砂岩接触部位发育的岩溶裂隙带为主要的充水途径。
The Xiaokou Tunnel is a deep and long tunnel located in a karst mountain area. The tunnel has undergone anonymous water inrush of complex processes for nearly two years. This paper examines the hydrogeological conditions of the Xiaokou tunnel based on data from field investigations. The water inrush sources and channels are identified by comparing the difference in hydrochemistry and hydrogen-oxygen isotopes of the water. The water inrush at the north of the tunnel to the right comes from the karst aquifer of the Permian-Triassic strata, while the other comes from the fissured aquifer of the Jurassic strata. The karstfractured zone developed between the Permian and Devonian strata forms the main filling channel of the water inrush. The results obtained from this study may provide technical guidance for the construction and operational maintenance of the Xiaokou tunnel. It is also helpful in solving analogous-engineering hydrogeological problems.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2015年第1期7-13,共7页
Hydrogeology & Engineering Geology
基金
中国地质调查局项目(12120113103800)
关键词
峡口隧道
水化学
氢氧同位素
涌水来源
Xiakou Tunnel
hydrochemistry
hydrogen-oxygen isotope
water inrush sources
