防渗墙深槽接头管法技术应用

Diaphragm wall in deep groove joint pipe technology application method

墙段连接技术是土石坝防渗墙施工中的一项关键技术，墙段连接可选用接头管法、钻凿法、双反弧桩柱法等。接头施工质量的好坏直接影响防渗墙的防渗效果和整个土石坝坝体的安全，而接头管法连接采用弧线连接方式，整体性及抗渗性好，成为目前土石坝防渗墙及地下连续墙施工中普遍应用的接头处理新技术。通过窄口水库大坝防渗墙采用接头管法施工中所遇到的问题进行分析探讨，提出了施工过程中需要注意的问题及其解决对策。

Wall section connection technology is a key technology in the construction of cutoff wall in the earth, wall section connection can choose joint tube method, drilling method, double inverse arc pipe column method etc. Joint construction quality directly affect theanti-seepage effect of cutoff wall and the whole earth rock dam safety, and the joint tube method connected by arcs connecting mode, the overall resistance and impermeability, become the joint of the universal application of earth rock dam seepage proof wall andunderground continuous wall construction in the processing of new technology. Are analyzed and discussed in this paper through the dam anti-seepage wall narrow reservoir using joint pipe encountered construction method in the problem, put forward the need to pay attention to in the process of construction problems and countermeasures.