重庆市三峡库区三期地质灾害防治工程应急抢险紧急实施Ⅰ类项目涪陵区门闩子崩滑体分为1#和2#崩滑体。该崩滑体前缘为长江航道，涪丰省级公路从崩滑体中前部穿越，其上分布大量的工用、民用光缆及农田。崩滑体若失稳，造成的损失不言而喻。因此对该崩滑体进行深入准确的研究有十分重要的意义。 论文充分分析了门闩子崩滑体的区域地质背景、工程地质状况，系统分析了滑坡的形成机理，着重强调了水对崩滑体的特殊作用。分别采用了传统的极限平衡理论及FLAC数值模拟技术两种方法对崩滑体在不同工程情况下的稳定性分析。通过两种方法对崩滑体的评价，优选治理方案，提出了崩滑体的防治建议。 通过本次研究，得出了以下结论： 1.在现状天然工程状况下，门闩子崩滑体整体处于稳定状态。 2.崩滑体主要是中下部的稳定性较差。由于三峡库区蓄水后，在库水浸泡、动静水压力等不利因素的作用下，引起中下部失稳崩岸，继而造成上部滑体稳定性越来越差，表现为牵引模式。 3.水位上升越高，崩滑体的稳定性越差。由于防洪的需要，三峡水位每年还将在175m和145m之间进行调节，更加不利于崩滑体的稳定。 4.依据稳定性评价结果，系统地设计出一套合理的治理方案。

Menshuanzi landslides of the third-phase project of geological disasters in the Three Gorges reservoir area in Chongqing Fuling District contain 1# and 2# landslide,in front of which are the Changjiang waterway, Fu Fung Chinese provincial highway from landslides across the front, on which distribut a lot of work with distributed, Cable and civilian fields.If the landslides are unstable, the making loss is self-evident.so,the depth study to the landslides will be very significancient. The paper fully reflect thelandslides’s regional geological background, geological conditions, the formation mechanism of the landslide analysis, emphasis on the special role of water precautions against landslides. The traditional methods of limit equilibrium theory and numerical simulation FLAC are used to study the stability analysis at different work conditions. Through two methods for the evaluation , the selection of treatment will be selected,and the treatment recommendations are confirmed. Through this study, the following conclusions: 1. Under natural conditions of the status works, the Menshuanzi landslides are in the overall stability. 2.The landslides’s instability spot is at their middle and lower. Due to the Three Gorges water storage reservoir, the reservoir water immersion, such unfavorable factors as the movement of water under pressure. Instability caused lower part of collapse, and thus lead to more stability of the upper slide poor performance of traction mode. 3. The higher water level increased, the stability of landslides worse. Because of the need for flood protection, water level in the Three Gorges will be in the 175m and 145 m between each adjustment even more detrimental to the stability of the sliding mass. 4. Based on the results of the stability evaluation, I design a rational system of governance programs.