土坝由于长期受到复杂的自然环境条件的影响和各种内外力的作用,堤身内不可避免地会产生这样那样的隐患,使得在运行中特别是高水位情况下,坝体出现裂隙、渗漏甚至管涌、塌陷等现象,如果不能及时发现问题,及早地进行维护加固,隐患必将逐渐发展,危及堤坝的安全。为了避免这些隐患对大坝造成危害,通常对大坝采取一些加固除险措施,如粘土灌浆处理、水泥土截渗墙处理等等。截渗体施工质量的好坏直接影响大坝的安全,但作为隐蔽工程,以前一直 Because of the long-term influence of complex natural environment and various internal and external forces, the dam will inevitably produce such hidden dangers, so that in operation, especially in the case of high water level, cracks and seepage occur in the dam body Even the phenomena of piping and collapse can lead to the gradual development of hidden dangers if the problems can not be detected and maintained and strengthened as early as possible, endangering the safety of dikes. In order to avoid these hidden dangers to the dam, it is usual to take some measures to reinforce the dam, such as clay grouting, cement earth cut-off wall and so on. The quality of construction of the cutoff body directly affects the safety of the dam, but as a hidden project, it has been