1概述在季节冻土区,渠道刚性衬砌如不采取必要的防冻胀措施,常发生基土冻胀破坏。主要表现为衬砌鼓胀裂缝、隆起架空、整体上抬、板块错位,严重的还会造成衬砌破碎或滑塌。渠道衬砌的冻胀破坏,导致其失去防渗减糙作用,增大渠道输水损失,降低渠道水利用系数。通过渠道衬砌冻胀破坏调查与实 1 Overview In the seasonally frozen region, if the rigid lining of the canal does not take the necessary measures to prevent frost heaving, it often occurs the frost heave of the soil. The main performance of the lining of bulging cracks, overhead overhead, the overall elevation, plate dislocation, serious will cause the lining broken or slump. The frost heaving destruction of the channel lining leads to the loss of anti-seepage and destructive effect, increases the water loss of the channel and reduces the channel water utilization coefficient. Investigation and Analysis of Damage Caused by Frost Heave through Channel