摘要
以某火山岩体围岩隧道为研究对象,分析了隧道区蓄水构造类型与隧道涌水特征,运用多种解析方法和数值模拟方法对隧道区典型断层带涌水量进行了计算,并与实测数据进行了对比,总结出各种方法的适用性。研究结果表明:火山岩体围岩隧道涌水表现为断层带控水的分段涌水特征;传统的地下水动力学法较降雨入渗法和氚同位素法更适合于用于此类隧道的隧道涌水量计算,而数值模拟法在计算隧道涌水量上有一定的优越性。此外,隧道断层带水文地质调查的程度与参数刻画的准确度对计算结果精度影响很大。
With an example of a volcanic surrounding rocks tunnel in Fujian Province,the characters of volcanic aquifer structure and tunnel water inflow have been summarized,and then various methods including the rainfall infiltration method,analytical methods and numerical method are used to calculate the water inflow along the typical fault zones in tunnels.Compared with observed data,the suitability of those methods is evaluated.The results show that,the water inflow along tunnel in a volcanic surrounding rock tunnel is characterized by the pattern of multi-segments inflow controlled by fault.Most traditional analytical methods based on hydrodynamic theory are more suitable for determination of tunnel influx than the rainfall infiltration method and the tritium isotope approach.Numerical methods show their advantages in calculation of initial tunnel inflow by characterizing the heterogeneity of fault zone and complex domain boundary.However,the accuracy of calculated tunnel inflow highly depends on the hydrogeological survey and the description of aquifer parameters.
出处
《地质科技情报》
CAS
CSCD
北大核心
2015年第6期193-199,共7页
Geological Science and Technology Information
关键词
隧道涌水量
火山岩
断层带控水
解析法
数值法
tunnel water inflow
volcanic rock
fault-controlled aquifer structure
analytical method
numerical method
