1概述引还入陡渠道位于丰润县北部丘陵区，是引滦入唐输水工程的重要组成部分，担负着唐山市工农业用水的任务。工程在最初运用的几年内，渠道内淤积石块泥砂等约5000，最大淤积深度1.5m。由于渠内存有积水，致使渠底部浆砌石遭到严重的冻融破坏，块石松动甚至脱落。渠边坡多 1 Introduction Caves into steep channels are located in the northern hilly area of ​​Fengrun County, is an important part of the water diversion project from the Luan River to Tang Dynasty, responsible for the task of industrial and agricultural water in Tangshan City. In the first few years of project application, silt and sediment in the channel are about 5000 and the maximum siltation depth is 1.5m. Due to the presence of stagnant water in the canal, the masonry at the bottom of the canal was severely frozen and thaw damaged, and the rock loosened and even fell off. Drainage slope and more