摘要
额敏县乌什水水库引水渠位于新疆北部,地基基础属季节性冻土。冬冻夏融,呈季节性变化。冬季输水受渠道渗漏影响,沿渠道两侧形成上层滞水的季节含水层。每年冬季降温期间,渠道砼板在冻结层冻胀力和渠水表层冻结冰的冰撑力综合作用下遭受冻胀破坏,严重威胁季节性冻土区渠道输水安全。通过对水工建筑物冻害调查、研究、观测,提出如下综合防治方案:选择防渗措施,减少渠道渗漏;夯实渠道基础,置换下垫土石;采取保温措施,抵御冻胀破坏;改变设计结构,提高抗冻害能力。
Wushishui water canal is located in the north of Xinjiang. The ground-foundatlon belongs to frozen earth. During the winter,soil freezing put pressure on the canal and breaking the canal. Prevention and cure measures are suggested for resisting frost-freezing destroy： lessening canal seepage ; strengthening the foundation of the canal, displacement the base earth, heat preservation, modifying the design of structure.
出处
《地质灾害与环境保护》
2005年第4期405-409,共5页
Journal of Geological Hazards and Environment Preservation
