华蓥山隧道排水的生态环境问题及效应

基于两次现场咨询工作经历及收集的资料，探讨了华蓥山隧道排水造成地下水资源流失，煤系质水入侵及水文徨环失衡等生态环境问题及形成机理，以及同此带来的岩溶入泉枯竭，地下水水质恶化，地表水体污染，地表水土流失等一系列负效应，分析结果表明，隧道长期排水将形成较大规模的降位漏斗，由于该漏斗的扩展，导致在疏干带内较强烈的水文地球化学作用，进而威胁隧道衬砌的稳定性。

On Ecological Environment Problems and Effects Caused by Discharge from Huayingshan Tunnel

On the basis of author's two on the spot consultant experiences and the collected data, this paper discusses ecological environment problems, such as groundwater resources loss, poor coal measure water intrusion and hydrologic cycle unbalance, which are caused by discharge from the tunnel, and their formation mechanisms. It also discusses a series of negative effects resulted, such as karst spring water depletion, groundwater degradation, surface water pollution and soil erosion. Analysis results show that the long term discharge of the tunnel will produce large scale cone of depression, and that the expansion of the cone will lead to the happening of intense hydrogeochemical action in drainage belt, hence bringing a threat to the stability of the tunnel lining.