宜万铁路马鹿箐隧道岩溶突水来源分析  

Analysis of bursting water source of Maluqing tunnel,Yichang-Wanzhou railway

作　　者：金新锋[1] 夏日元[1] 梁彬[1] 

机构地区：[1]中国地质科学院岩溶地质研究所,桂林541004

出　　处：《水文地质工程地质》2007年第2期71-74,80,共5页Hydrogeology & Engineering Geology

基　　金：国土资源部攻关项目(20010303);中国地质调查局地质调查项目(200310400043)联合资助

摘　　要：马鹿箐隧道是宜万铁路22座长、特长隧道之一,全长7 879m,最大埋深600m。2006年1月21日发生特大突水事故,最大突水量达30×104m3/h,造成重大损失。为查明突水来源,在突水区附近约5km2范围内采集不同类型的水样21个,淤泥样2个,采用水文地球化学方法对这些水样进行水化学分析和同位素分析,还对淤泥和部分水样做了14C测年。通过对比样品分析结果,运用水文地球化学理论和同位素水文地质方法,认为突水来源为年代较老的溶洞封存水。Maluqing tunnel is one of the 22 long or extra-long tunnels of Yichang-Wanzhou railway. The total length is 7879m, and maximum overburden is 600m. In 21^st, Jan, 2006, a serious bursting water accident happened. The Maximum specific water yield is 30 × 10^4 m^3/h, causing heavy losses. In order to verify the source of bursting water, this article uses the hydrogeochemistry method . 21 water samples with different types and 2 muck samples were sampled in 5km^2 area. Complete water quality analysis and isotopic analysis were carried on to the water samples, and measured the age of muck and part of water samples by ^14 C. Through comparing the results, with hydrogeochemistry and isotopic hydrogeology theory, it conducted the result that the source of bursting water is older sealed cavern water.

关 键 词：水文地球化学 同位素 马鹿箐隧道 突水 

分 类 号：U456.3[建筑科学—桥梁与隧道工程]