渠道衬砌防渗及抗冻技术在灌区的应用

Application of Channel Lining Seepage Control and Frost Resistance Technology in Irrigation Areas

防渗及抗冻是宝鸡峡灌区输水渠道修建维护和更新改造要解决的基本问题,土质渠道渗漏严重且易冻消垮塌,混凝土衬砌渠道防渗较好但常因受冻而鼓胀破损,严重影响正常有效使用,并存在安全隐患。笔者在实践中调查分析灌区输水渠道冻胀破坏和老化渗漏等情况及原因,提出了灌区渠道防渗及抗冻的一些技术措施,以供参考。

Seepage control and frost resistance is the main problem should be solved in the maintance and renovation of channels in Baojixia irrigation area. Soil channel is prone to leak and freeze to collapse, whereas the seepage prevention of concrete lining of canal is better but often likely to be freezed and bulged, which seriously affects the normal use with security risks. The au- thor investigated the frost heaving damage of channels in irrigation area and leakage of aging and analysed their causes, a num- ber of technical measures about the seepage control and frost resistance are proposed.