不同降水条件下岩溶隧道涌水量预测及风险评价  

Prediction and risk assessment of karst tunnel water inflow under different precipitation conditions

作　　者：付登文 FU Deng-wen(Coal Geology Prospecting Institute of Yunnan Province Kunming 650218,Yunnan,China)

机构地区：[1]云南省煤炭地质勘查院,云南昆明650218

出　　处：《地下水》2024年第5期37-41,共5页Ground water

摘　　要：以滇东北高原深切峡谷区斜坡地带某岩溶隧道为例,利用岩溶水文地质调绘、注水试验、断层特性、煤层及老窑分布等资料,分析深切峡谷区斜坡地带岩溶发育特征,划分6个岩溶水动力分带,划分突水风险段为A级(K35+800~K37+970、K39+530~K40+740),该段为隧道施工和安全运营的高风险段;三种方法预测极端干旱、枯水期、丰水期、累年各月日最大降水量条件下隧道涌水量,不同条件下涌水量差异大(最小6578 m^(3)/d,最大58093 m^(3)/d);隧道穿越断层K39+830处涌水量为10723 m^(3)/d。多方法多角度分析岩溶隧道涌水量的方法可作为同类岩溶隧道精细勘察、动态设计、安全施工、保障隧道结构及安全运营提供参考,做到一次整治不留后患的处理原则。Taking a karst tunnel in the slope area of the deep canyon area of the northeast Yunnan Plateau as an example,Using karst hydro-geological survey,water injection test,fault characteristics,distribution of coal seam and old kiln,Analyzing the characteristics of karst development in the slope zone of the deep canyon area,Divide 6 karst hydrodynamic zones,The risk segment of water penetration as Grade A(K35+800~K37+970,K39+530~K40+740),This section is a high-risk section for tunnel construction and safe operation;Three methods predict the tunnel inflow under extreme drought,dry season,wet season and the maximum daily precipitation of each month,Different water inflow under different conditions(minimum 6578 m^(3)/d,Max.58093 m^(3)/d);The water inflow of the tunnel crossing fault K39+830 is 10723 m^(3)/d.The method of multi-method analysis of karst tunnel inflow can be used as a reference for fine investigation,dynamic design,safe construction,guarantee tunnel structure and safe operation,so as to achieve the treatment principle of one renovation without any future problems.

关 键 词：岩溶隧道 季节变动带 涌水量 涌突水 

分 类 号：P641.41[天文地球—地质矿产勘探] P641.134[天文地球—地质学]