基于数值模拟技术的帷幕止水方案研究

Study on Curtain Water Stop Scheme Based on Numerical Simulation Technology

矿坑涌水量预测是矿山水文地质工作的重要环节,对矿山防治水及防排水系统建设具有重要意义。盘龙铅锌矿矿区东侧黔江水位抬升后,大岭矿段生产安全将受到水害威胁,目前存在单建东侧止水帷幕与同建东、西两侧止水帷幕2种防治水方案。在充分研究盘龙铅锌矿区水文地质条件的基础上,采用GMS软件建立了比较接近实际的三维地下水渗流模型,分别模拟预测2种帷幕止水方案下矿坑涌水量及地下水流场的演变情况,模型计算结果可作为帷幕方案设计及投资决策的依据。

The prediction of mine water inflow is an important part of mine hydrogeological work,and it is of great significance to mine water prevention and drainage system construction.After the Qianjiang River water level on the east side of the Panlong lead-zinc mine rises,the production safety of the Daling mining section will be threatened by water hazards.At present,there are two schems of building the water stop curtain on the east side separately and building the water-stop curtain on the east and west sides at the same fime.Based on the full study of hydrogeological conditions in Panlong lead-zinc mine area,a three dimensional groundwater seepage model is established by GMS software,which is close to the actual situa⁃tion.The evolution of mine water inflow and groundwater flow field under two kinds of curtain sealing schemes are simulated and predicted respectively.The calculation results of the model can be used as the basis for curtain scheme design and investment decision.