长大隧洞工程建设中地下水处理的实践及思考

以引汉济渭工程秦岭输水隧洞(越岭段81.779 km)为例,围绕该隧洞建设过程中的地下水问题,介绍其总体富水情况以及地下水预测方法。通过对秦岭各支洞抽排水措施的综合研究,给出了抽排水方案的设计步骤,结合不同涌水的处理提出了突涌水的处理思路,并介绍了目前国内先进的突涌水预测手段及应用效果。根据秦岭隧洞抽排设备的配置思路以及洞外环保处理情况,指出了目前地下水处理过程中存在的问题并提出相应的解决方法。通过引汉济渭工程建设过程中地下水处理情况的介绍、探讨和分析,对长大隧洞处理类似地下水问题提供一定的借鉴。

Practice and thinking on groundwater treatment in construction of long large-sized tunnel

By taking Qinling Water Conveyance Tunnel （the length of the mountain-crossing section is 81.779 km） of Hanjiang River to Weihe River Water Transfer Project as the study case， the general water richment of the tunnel and its groundwater prediction method are described herein for the problem of groundwater from the construction of the tunnel. Through the comprehensive study made on the water-pumping and draining measures for all the construction adits of Qinling Tunnel， the design steps of the water-pumping and draining scheme are given out and the idea for the treatment of the sudden water burst is proposed in combination with the treatments on various kinds of water bursts， while the advance sudden water burst prediction method at present in China and its application effect are introduced as well. In accordance with the consideration of the water-pumping and draining equipment for the construction of the tunnel and the treatment on the environment outside of the tunnel， the problems during the groundwater treatment process at present are pointed out and the relevant solving methods are put forward as well. Through the introduction， discussion and analysis made on the groundwater treatment during the construction of Hanjiang River to Weihe River Water Transfer Project， a certain reference is intended to be provided for the treatment of the similar groundwater problem from the construction of long large-sized tunnel.