摘要
顺层岩质滑坡已对人类造成难以量计的灾害及损失,滑坡的防治方案研究对减少此类灾害发生意义重大。为了对顺层岩质滑坡的防治方案进行研究,以重庆市石柱县龙井滑坡为研究对象,通过方案对比的方法得出了更适合该滑坡的防治方案,并利用数值模拟对此方案进行了治理效果评价。结果表明,“两级抗滑支挡+地表排水+地裂缝封闭”更适用于龙井滑坡,根据治理效果模拟,滑坡最大水平位移减少58.9%,最大竖向位移减少58.1%,最大剪切应变增量减少52.9%。两级抗滑支挡能改善顺层岩质滑坡应力分布,提供抗滑力,减少塑性区范围以及减缓下滑趋势。
Since countless casualties and property losses have been caused by the bedding rock landslide hazards,the control scheme against this kind of landslide is of great significance.For the purpose of studying the control scheme of bedding rock landslide,the Longjing landslide in Chongqing was taken as an example.After a more suitable control scheme was selected through the method of comparative analysis,the effect of the treatment of this scheme was evaluated by numerical simulation.The result shows that the treatment combining two-stage anti-sliding retaining,surface drainage and ground fracture sealing is more suitable for Longjing landslide.According to the effect evaluation,the maximum horizontal displacement of landslide can be reduced by 58.9%,the maximum vertical displacement by 58.1%,and the maximum shear strain increment by 52.9%.It indicates that the two-stage anti-slip retaining can improve the stress distribution of bedding rock landslide,provide anti-slip force and reduce the range of plastic zone greatly,which is advantageous to prevent the sliding trend of the landslide.
作者
林轩
张枝华
黄波林
王平
郭健
LIN Xuan;ZHANG Zhi-hua;HUANG Bo-lin;WANG Ping;GUO Jian;无(Hubei Key Laboratory of Disaster Prevention and Mitigation,China Three Gorges University,Yichang 443002,China;College of Civil Engineering&Architecture,China Three Gorges University,Yichang 443002,China;Chongqing 208 Geoenvironmental Research Institute Co.,Ltd.,Chongqing 400700,China)
出处
《科学技术与工程》
北大核心
2023年第18期7935-7944,共10页
Science Technology and Engineering
基金
国家自然科学基金(42077234)
三峡工程重庆库区消落区岩体劣化灾变特征与早期防控研究(KJ-2021047)
重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX1650)。
关键词
顺层岩质滑坡
防治方案
治理效果评价
数值模拟
bedding rock landslide
prevention scheme
evaluation of treatment effect
numerical simulation
