某排土场堆积体边坡稳定性评价及处理措施研究
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摘要
该文通过对现场地质调查和勘察,分析了某排土场堆积体边坡的现状特征,采用极限平衡法和数值分析法对三种不同工况下边坡稳定性进行评价,分析了边坡的破坏机理。通过计算分析得出,边坡主要滑动部位为上层欠固结的杂填土,滑移模式为浅层滑动。三种工况中暴雨工况对边坡的安全稳定影响最为明显,表层杂填土出现大量张拉破坏并产生较大位移,严重影响了边坡的安全稳定性。为降低边坡失稳的可能性,采取削坡减载、回填压脚等工程措施进行加固,并对加固后边坡进行稳定性评价。通过计算可知,加固措施明显改善了边坡的稳定性,边坡在三种工况中都处于稳定状态。
Based on the field geological survey and investigation,the present characteristics of the accumulated slope in a junkyard are analyzed. The stability of the slope under three different working conditions is evaluated by limit equilibrium method and numerical analysis method,and the failure mechanism of the slope is analyzed. Through calculation and analysis,it shows that the main sliding position of the slope is the underconsolidated miscellaneous fill in the upper layer,and the sliding mode is the shallow sliding. The rainstorm has the most obvious influence on the safety and stability of the slope in the three working conditions. The surface miscellaneous fill has a lot of tension damage and large displacement,which seriously affects the safety and stability of the slope. In order to reduce the possibility of slope instability,the engineering measures such as cutting slope and reducing load,backfilling foot are adopted to reinforce the slope,and the stability of the slope after reinforcement is evaluated. Through the calculation,it shows that the reinforcement measures improve the stability of the slope obviously,and the slope are all in a stable state in the three working conditions.
Based on the field geological survey and investigation,the present characteristics of the accumulated slope in a junkyard are analyzed. The stability of the slope under three different working conditions is evaluated by limit equilibrium method and numerical analysis method,and the failure mechanism of the slope is analyzed. Through calculation and analysis,it shows that the main sliding position of the slope is the underconsolidated miscellaneous fill in the upper layer,and the sliding mode is the shallow sliding. The rainstorm has the most obvious influence on the safety and stability of the slope in the three working conditions. The surface miscellaneous fill has a lot of tension damage and large displacement,which seriously affects the safety and stability of the slope. In order to reduce the possibility of slope instability,the engineering measures such as cutting slope and reducing load,backfilling foot are adopted to reinforce the slope,and the stability of the slope after reinforcement is evaluated. Through the calculation,it shows that the reinforcement measures improve the stability of the slope obviously,and the slope are all in a stable state in the three working conditions.
引文
[1]贾倩.复合式排土场的边坡设计与稳定性研究:[学位论文].石家庄:石家庄铁道大学,2017
[2]陈昌富,朱剑锋.基于Morgenstern-Price法边坡三维稳定性分析.岩石力学与工程学报,2010,29(07):1473~1480
[3]朱大勇,丁秀丽,邓建辉.基于力平衡的三维边坡安全系数显式解及工程应用.岩土力学,2008(08):2011~2015,2042
[4]朱大勇,钱七虎.三维边坡严格与准严格极限平衡解答及工程应用.岩石力学与工程学报,2007,(08):1513~1528
[5]姜海涛.基于FLAC~(3D)的排土场边坡稳定性分析.煤矿安全,2017,48(10):216~219
[6]费聿鹏,白润才,殷彤.基于FLAC~(3D)的黄土基底排土场稳定分析.微计算机信息,2011,27(01):262~263,259
[7]金福喜,钱毅,袁权威.某城市排土场边坡三维稳定性分析.水资源与水工程学报,2017,28(02):222~226
[8]张春锋,曹方智.内蒙古某露天煤矿内排土场边坡稳定性研究.露天采矿技术,2017,32(10):30~32,39
[2]陈昌富,朱剑锋.基于Morgenstern-Price法边坡三维稳定性分析.岩石力学与工程学报,2010,29(07):1473~1480
[3]朱大勇,丁秀丽,邓建辉.基于力平衡的三维边坡安全系数显式解及工程应用.岩土力学,2008(08):2011~2015,2042
[4]朱大勇,钱七虎.三维边坡严格与准严格极限平衡解答及工程应用.岩石力学与工程学报,2007,(08):1513~1528
[5]姜海涛.基于FLAC~(3D)的排土场边坡稳定性分析.煤矿安全,2017,48(10):216~219
[6]费聿鹏,白润才,殷彤.基于FLAC~(3D)的黄土基底排土场稳定分析.微计算机信息,2011,27(01):262~263,259
[7]金福喜,钱毅,袁权威.某城市排土场边坡三维稳定性分析.水资源与水工程学报,2017,28(02):222~226
[8]张春锋,曹方智.内蒙古某露天煤矿内排土场边坡稳定性研究.露天采矿技术,2017,32(10):30~32,39