麦积山国际中心老滑坡成灾机理及防治对策分析  

Analysis of the mechanism of disaster formation and prevention and control measures of the old landslide in Maiji mountain international center

作　　者：李文文 杨志鹏[1] LI Wen-wen;YANG Zhi-peng(Gansu forestry vocational and technical college,Tianshui,Gansu 741020)

机构地区：[1]甘肃林业职业技术学院,甘肃天水741020

出　　处：《地下水》2023年第6期151-154,共4页Ground water

基　　金：2021年甘肃省高等学校创新基金:“陇东地区浅沟侵蚀突变成灾及综合整治措施研究分析”(2021B-417);2023年甘肃省高等学校创新基金:“黄土水敏性对陇东南地区地质灾害易发性影响研究”(2023A-244)。

摘　　要：通过对天水麦积山国际露营中心斜坡的野外调查,结合岩土工程勘查技术手段,探讨了国际中心滑坡的成灾机理;利用传递系数法定量分析坡脚人工边坡在不同工况条件下的稳定性。结果表明:天水麦积山国际中心老滑坡由地震作用诱发,属地震-降雨耦合型滑坡;坡脚不稳定斜坡在天然状态下相对稳定,在降雨以及地震+降雨工况下,处于欠稳定-不稳定状态。建议采用“锚索框架+坡脚挡土墙+外围排水渠”对坡脚不稳定斜坡斜坡进行整治。研究成果可为天水麦积区地震滑坡的变形机理及防灾减灾提供实践依据。Through the field investigation of the slope of Tianshui Maiji mountain international camping center,combined with the technical means of geotechnical investigation,the mechanism of the landslide of the international center was explored;the stability of the artificial slope at the foot of the slope under different working conditions was quantitatively analyzed by using the transfer coefficient method.The results show that the old landslide of Tianshui Maiji mountain international center is induced by seismic action and is a coupled seismic-rainfall landslide.The unstable slope at the foot of the slope is relatively stable in the natural state,and is in the unstable-unstable state under the rainfall and earthquake+rainfall conditions.It is recommended to use“anchor frame+retaining wall at the foot of the slope+peripheral drainage”to remediate the unstable slope at the foot of the slope.The research results can provide practical basis for the deformation mechanism and disaster prevention and mitigation of earthquake landslides in Tianshui Maiji district.

关 键 词：地震滑坡 稳定性分析 治理措施 

分 类 号：P642.22[天文地球—工程地质学]