摘要
输水渠道是目前普遍推广的节水灌溉措施,其在一定程度上提高了灌溉效率。因此,对冬季输水渠道的冻胀破坏形式、原因及防治措施进行研究具有重要价值。常见的输水渠道破坏形式有隆起架空、错位及滑塌、鼓胀及裂缝等。冬季输水渠道冻胀破坏基本发生在边坡板的中1/3范围内,冻胀量较大,边坡板中部易形成台阶。在分析其冻胀破坏机理的基础上,从次全断面换填、边坡保温绝热、新型渠道结构三个方面提出防治措施,以为同类工程提供借鉴。
Water transmission channel is a widely promoted water-saving irrigation measure at present, wirrigation efficiency to a certain extent. Therefore, it is of great value to study the frost expansion failure forms, causes and control measures of water transmission channels in winter. Common water transmission channel destruction forms include uplifting, dislocation, slump, bulge, fracture, etc. In winter, the frost expansion failure basically occurs in the middle 1/3scope of the slope plate. The frost expansion is larger, and steps can be formed easily in the middle of the slope plate. The frost expansion failure mechanism is analyzed. On the basis, prevention measures are proposed from three aspects of subtotal cross-section filling, slope insulation and novel channel structure.
出处
《水利建设与管理》
2017年第10期86-89,共4页
Water Conservancy Construction and Management
关键词
冬季输水
混凝土渠道
非全断面冻结
防冻胀破坏
water transmission in winter
concrete channel
non-total section freezing
frost expansion failure prev
