墨竹工卡县中学后山滑坡体稳定性分析研究
|
摘要
该滑坡体位于墨竹工卡县中学后山,318国道正上方。其松散堆积物土方量巨大,有关部门多次进行抗滑防治处理,但均未彻底根治,整个滑坡体仍欠稳定,对中学师生的生命财产安全及公路的安全营运造成极大的威胁。本文通过野外实地勘察,室内岩心试验,采用瑞典条分法计算滑坡的稳定性,并运用FLAC3D数值模拟各种工况下的滑坡体的稳定情况。结果表明:该滑坡体在正常情况下处于稳定状态,在五级以上地震或暴雨下,该滑坡体将失稳下滑。
The landslide is located in the hills behind Maizhokunggar County middle school,318 national road, directly above. There is large loose deposits on it,although the department concerned has taken anti- sliding measures many times,it is still not thoroughly eradicated and the whole of landslide still slow down,It has brought significant threats and hazards to teachers and students' lives and property and Safe operation of the highway. This paper calculates the stability with Sweden slice method by field surveys、core test and use FLAC3 D software to simulate the stability of the landslide on different conditions. It turned out that the landslide is stable in natural state and the landslide will fall under earthquakes of Ms≥5 or heavy rain.
The landslide is located in the hills behind Maizhokunggar County middle school,318 national road, directly above. There is large loose deposits on it,although the department concerned has taken anti- sliding measures many times,it is still not thoroughly eradicated and the whole of landslide still slow down,It has brought significant threats and hazards to teachers and students' lives and property and Safe operation of the highway. This paper calculates the stability with Sweden slice method by field surveys、core test and use FLAC3 D software to simulate the stability of the landslide on different conditions. It turned out that the landslide is stable in natural state and the landslide will fall under earthquakes of Ms≥5 or heavy rain.
引文
[1]喻振兴,郑安柱.区域地质调查报告(拉萨幅)[R].拉萨:西藏自治区地质局,1979.
[2]郑颖人.边坡与滑坡工程治理[M].北京:人民交通出版社,2007.
[3]黄润秋.20世纪以来中国的大型滑坡及其发生机制[J].岩石力学与工程学报,2007,27(3):433-454.
[4]彭文斌.FLAC3D实用教程[M].北京:机械工程出版社,2007.
[5]贺汇文,龙建辉,苏生瑞,章健.某高速公路滑坡的数值模拟及后缘坡体稳定性分析[J].地球科学与环境学报,2008.
[2]郑颖人.边坡与滑坡工程治理[M].北京:人民交通出版社,2007.
[3]黄润秋.20世纪以来中国的大型滑坡及其发生机制[J].岩石力学与工程学报,2007,27(3):433-454.
[4]彭文斌.FLAC3D实用教程[M].北京:机械工程出版社,2007.
[5]贺汇文,龙建辉,苏生瑞,章健.某高速公路滑坡的数值模拟及后缘坡体稳定性分析[J].地球科学与环境学报,2008.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心