高填方机场滑坡体变形监测及稳定性分析
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摘要
对某高填方机场出现裂缝的边坡进行变形监测,分析监测数据,并结合地质勘探和数值模拟结果,表明该处边坡存在滑坡的危险;分析造成滑坡变形的主要原因是回填加载时增加的主动土压力引发老滑坡重新产生新滑动。因此提出该高填方机场边坡稳定处理措施,以削挖重新回填为主。
With the deformation inspection on a certain high fill slope and the analysis of the data,combining with the result of geological prospecting and numerical simulation,it turned out that the slope is in the danger of landslide.The result of analysis shows that the main reason of landslide deformation is that the new sliding produced by old slope,which is caused by increasing active earth pressure when backfill loading.According to the above analysis,a treatment measure on the high fill slope airport is proposed,which is mainly based on cut and backfill.
With the deformation inspection on a certain high fill slope and the analysis of the data,combining with the result of geological prospecting and numerical simulation,it turned out that the slope is in the danger of landslide.The result of analysis shows that the main reason of landslide deformation is that the new sliding produced by old slope,which is caused by increasing active earth pressure when backfill loading.According to the above analysis,a treatment measure on the high fill slope airport is proposed,which is mainly based on cut and backfill.
引文
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[2]隋海波,施斌,张丹,等.边坡工程分布式光纤监测技术研究[J]岩土力学与工程学报,2008,27(S2):3725-3731.
[3]李铁汉,骆培云.边坡变形监测及其资料的分析和应用——以新滩滑坡为例[J].中国地质灾害与防治学报,1996,7(S1):86-91.
[4]王曙光.山区高速公路滑坡安全监测及稳定性分析[D].湖南:中南大学,2011.
[5]马德建.深基坑土坡失稳的主要原因与预防[J].建筑技术,2001,32(4):248-249.
[6]陈强,韩军,艾凯.某高速公路山体边坡变形监测与分析[J].岩土力学与工程学报,2004,23(2):299-302.
[7]袁治军,易有为.高速公路红砂岩高边坡变形监测与分析[J].公路工程,2008,33(6):95-97.
[8]李力.通平高速竹菊湾高边坡变形监测及分析研究[J].公路工程,2012,37(6):42-44.
[9]Zienkiewicz O C,Humpeson C,Lewis RW.Associated and nonassociatedvisco-plasiticity in soil mechanics[J].Geotechnique,1975,25(4):671-689.
[10]姜立新.基于强度折减的有限元方法求边坡稳定安全系数[J].建筑技术,2009,40(6):535-538.
[11]赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定安全系数[J].岩土工程学报,2002,24(3):343-346.
[12]郑颖人,赵尚毅.有限元强度折减法在土坡与岩坡中的应用[J].岩石力学与工程学报,2004,23(19):3381-3388.