宿迁市韩山堆填土滑坡稳定性分析与治理设计  

Stability analysis and control design of Hanshan landfill landslide in Suqian city

作　　者：咸玉建 郭炳跃 梁聪 戴俊成 张璟 XIAN Yujian;GUO Bingyue;LIANG Cong;DAI Juncheng;ZHANG Jing(Geological Exploration Technology Institute of Jiangsu Province,Nanjing 210049,China)

机构地区：[1]江苏省地质勘查技术院,南京210049

出　　处：《江西理工大学学报》2020年第1期1-7,共7页Journal of Jiangxi University of Science and Technology

基　　金：国家自然科学基金资助项目(41262011);江苏省省地勘基金项目(苏财建[2018]96号)。

摘　　要：宿迁韩山北侧堆填土滑坡自出现滑坡迹象以来,滑坡险情不断加大,严重威胁滑坡区新建建筑物及过往行人安全。文中在对韩山北侧滑坡详细勘查及灾害调查的基础上,对其灾害特征与致灾机理进行了综合分析,并运用Geo-Slope软件对该滑坡体天然、暴雨、地震3种工况下的滑坡稳定性进行了定量分析。结果表明:在暴雨和地震工况下滑坡体处于不稳定状态,滑带位于堆填土与下卧片岩层基覆界面处,与滑坡详细勘查情况一致。同时,采用传递系数法计算出3种工况边坡的剩余下滑力,得到滑坡推力设计值。最后,通过理正岩土软件计算出拟设抗滑桩桩身内力及分布,并提出以抗滑桩板墙为主要支护手段的综合治理方案。该研究可为韩山地区同类型滑坡地质灾害防治提供参考。With the signs of the landfill landslide in the north side of Hanshan in Suqian city,the possibility for landslide has been increasing,which poses a serious threat to the safety of new buildings and pedestrians in the surrounding areas.Based on the detailed exploration and disaster investigation of the landslide,this paper makes a comprehensive analysis of its disaster characteristics and disaster mechanism,and evaluates the stability of the landslide in three working conditions by using the Geo-Slope software.The results show that the landslide turns into an unstable state under the working conditions of rainstorm and earthquake,and the sliding zone is mainly located at the interface between the landfill and the underlying sheet rock stratum,which is consistent with the detailed investigation of landslide disaster.Meanwhile,the residual sliding force of the slope under three working conditions is calculated by using the transfer coefficient method,and the design value of landslide thrust is obtained.What′s more,the internal force and distribution of the proposed anti-slide pile body is obtained by combining with the Lizheng geotechnical software,and the comprehensive treatment scheme with the anti-slide pile plate wall as the main supporting means is put forward.The research provides scientific reference for the prevention of the same type of landslide geological disaster in Hanshan area.

关 键 词：堆填土滑坡 成灾机理 稳定性分析 抗滑桩内力计算 治理设计 

分 类 号：X45[环境科学与工程—灾害防治] P642.22[天文地球—工程地质学]