库水升降对漩口滑坡稳定性的影响规律
发布时间：2018-12-19 18:32
【摘要】：库水位升降是加剧库区滑坡危险性的主要因素。以西南地区紫坪铺水电站漩口滑坡为例,借助Geo-Studio数值模拟软件,分析了库水位变化对滑坡渗流场及稳定性的影响规律,结合监测数据验证了受库水位影响滑坡稳定性的发展趋势。结果表明:通过滑体颗粒级配曲线和修正的Kovács模型所确定的饱和-非饱和渗流参数,能够很好地模拟滑坡渗流场变化。在库水位上升阶段,稳定性系数峰值随着库水位上升速率的增大而增大。库水位下降时,稳定性系数先减小到最低值后逐渐增大,最低值时间与库水位最低点的时间一致。库水位下降速率越快,滑坡稳定性系数越差。库水位升降主要对滑坡前缘稳定性造成影响。
[Abstract]:The rise and fall of reservoir water level is the main factor to aggravate the landslide risk in the reservoir area. Taking the Waikou landslide of Zipingpu Hydropower Station in southwest China as an example, with the help of Geo-Studio numerical simulation software, the influence of reservoir water level change on the seepage field and stability of landslide is analyzed. Combined with monitoring data, the development trend of landslide stability affected by reservoir water level is verified. The results show that the saturated-unsaturated seepage parameters determined by the sliding particle gradation curve and the modified Kov 谩 cs model can well simulate the variation of landslide seepage field. At the stage of water level rise, the peak value of stability coefficient increases with the increase of water level rising rate. When the reservoir water level drops, the stability coefficient decreases to the lowest value first and then increases gradually, and the lowest value time is the same as the time of the reservoir water level lowest point. The faster the water level drops, the worse the landslide stability coefficient is. The rise and fall of reservoir water level mainly affect the stability of the front edge of landslide.
【作者单位】： 中交第二公路勘察设计研究院有限公司;中国地质科学院地质力学研究所;
【基金】：国家自然科学基金项目(41672359) 中国地质调查局工作项目(DD20179282,DD20160272) 院所长基金项目(DZLXJK201611)
【分类号】：TV223;TV738
[Abstract]:The rise and fall of reservoir water level is the main factor to aggravate the landslide risk in the reservoir area. Taking the Waikou landslide of Zipingpu Hydropower Station in southwest China as an example, with the help of Geo-Studio numerical simulation software, the influence of reservoir water level change on the seepage field and stability of landslide is analyzed. Combined with monitoring data, the development trend of landslide stability affected by reservoir water level is verified. The results show that the saturated-unsaturated seepage parameters determined by the sliding particle gradation curve and the modified Kov 谩 cs model can well simulate the variation of landslide seepage field. At the stage of water level rise, the peak value of stability coefficient increases with the increase of water level rising rate. When the reservoir water level drops, the stability coefficient decreases to the lowest value first and then increases gradually, and the lowest value time is the same as the time of the reservoir water level lowest point. The faster the water level drops, the worse the landslide stability coefficient is. The rise and fall of reservoir water level mainly affect the stability of the front edge of landslide.
【作者单位】： 中交第二公路勘察设计研究院有限公司;中国地质科学院地质力学研究所;
【基金】：国家自然科学基金项目(41672359) 中国地质调查局工作项目(DD20179282,DD20160272) 院所长基金项目(DZLXJK201611)
【分类号】：TV223;TV738
【相似文献】
相关期刊论文 前10条
1 陈远中;仲济刚;;东深供水改造工程石头岭滑坡稳定性与加固方案的研究[J];中国农村水利水电;2012年07期
2 唐满金;;降雨与库水位叠加作用下的库岸滑坡稳定性研究[J];中国水运(理论版);2007年10期
3 肖盛燮;祝辉;陈洪凯;唐红梅;李明;石晋旭;;三峡水库区康家嘴滑坡稳定性研究[J];中国地质灾害与防治学报;2006年03期
4 何启标;黄河李家峡水电站坝前Ⅱ号滑坡稳定性研究[J];西北水电;1992年04期
5 张良喜;贾逸;任光明;;碧口水电站库区淤积对右岸河口滑坡稳定性的影响[J];水电能源科学;2012年12期
6 邓永煌;易武;赵新建;;不同库水位升降速率作用下浮托减重型滑坡稳定性分析[J];科学技术与工程;2013年32期
7 张少琴;向玲;王力;;降雨作用下不同库水位升降速率对某滑坡稳定性的影响[J];浙江水利科技;2014年02期
8 王德咏;李科;;库水位上升对千将坪滑坡的影响研究[J];灾害与防治工程;2007年02期
9 刘广宁;黄波林;陈小婷;王世昌;;降雨和库水位升降对岩质岸坡的影响[J];长江流域资源与环境;2013年03期
10 驹田^円，
本文编号：2387294
本文链接：https://www.wllwen.com/kejilunwen/shuiwenshuili/2387294.html
