土坝发生滑坡是因坝坡部分土体的抗滑力与滑动力作用失衡。当滑动力超过了抗滑力,使坝体的一部分脱离原来的位置坍落滑出,而产生滑坡,严重的可能引起垮坝失事,因此必须予以极大的重视。1.滑坡产生的原因(1)施工质量太差是引起土坝滑坡的主要原因,如没有控制铺工厚度、碾压遍数和填土的含水量等,以致使填土的干容重没有达到设计标准;雨季施工、土料含水量过大;碾压后形成橡皮土,又未加处理;冬 Earth dam landslide is due to the part of the slope slope soil slip force and sliding force imbalance. When the sliding force exceeds the anti-skid force, a part of the dam slips out of the original position and slides out, resulting in landslides. This may lead to collapse accidents in serious cases. Therefore, great attention must be paid to this. 1. Causes of landslide (1) Poor construction quality is the main reason causing landslide of earth dam. If the thickness of paving works, the number of rolling compaction and the water content of earth filling are not controlled, etc., the dry weight of fill does not reach Design standards; rainy season construction, soil moisture content is too large; formed after the compaction of rubber soil, without treatment; winter