渠道渗漏水抽排作业效果分析

Drainage effects in water supply canals

针对北疆供水ZG渠因渠道渗漏导致的各类工程破坏问题,提出设置渠道纵横排水体系对运行期内沿线的渗漏水进行及时抽排。在此基础上,通过设置"膜后水位"观测管观测渗漏情况,结合集水井抽排作业数据考察该系统的有效性。观测结果表明,设置渠道纵横排体系后,运行期内一些断面仍存在渗漏现象,但相关断面的"膜后水位"较未设置排水体系前大幅度下降。通过对运行期内"膜后水"水位与抽排作业的相关性分析,论证了抽排系统的整体有效性。

In view of the various engineering damage problems caused by leakage in ZG canal,it is proposed to set up a drainage system to drain the leaking water during the operation period.On this basis,an observation tube is set up to observe the leakage situation,and the effectiveness of the system is investigated in conjunction with the data of pumping operation water-collection wells.The results show that after the installation of the vertical and horizontal drainage system for canals,there are still leakages in some sections during the operation period,but the"post-film water level"of the relevant sections is dropped significantly compared to that before the drainage system is installed.Through the correlation analysis between the water level of the"post-membrane water"and the drainage operation during the operation period,the overall effectiveness of the drainage system is demonstrated.