318国道通麦镇段某滑坡稳定性分析
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摘要
针对318国道通麦镇段某滑坡问题,结合滑坡区的实际情况和地质条件,对滑坡进行了定性、定量评价,结果表明:滑坡区在正常工况下整体(第一级滑体)处于基本稳定状态,局部(第二级滑体)处于欠稳定状态;在非正常工况Ⅰ或地震作用下整体(第一级滑体)将处于欠稳定状态,局部(第二级滑体)处于滑移状态。建议:①在公路外侧下设置预应力锚索抗滑桩;②在滑坡前缘剪出口部位修筑防冲刷片石砼挡墙;③在坡体上植树造林或种植草甸植物等营造防护林措施。
Landslide had ever occurred at the Tongmaizhen section of No.318 National Highway.Combined with the actual situation and geological conditions of the landslide area,qualitative and quantitative appraisal was con ducted for the landslide.The results of appraisal demonstrate that the landslide area is in basically stable state on the whole(1st-grade slide mass),and in under-stable state locally(2nd-grade slide mass)under normal operating condition,in under-stable state on the whole(1st-grade slide mass) and in sliding state locally(2nd-grade slide mass) under abnormal operating condition I or earthquake.The following measures are suggested: 1.Construct pre-stressed anchorage anti-slide piles at the external side of highway;2.Construct anti-scouring rubble concrete retaining wall at the position of landslide frontal edge crossing exit;3.Plant trees or grass on the slope.
Landslide had ever occurred at the Tongmaizhen section of No.318 National Highway.Combined with the actual situation and geological conditions of the landslide area,qualitative and quantitative appraisal was con ducted for the landslide.The results of appraisal demonstrate that the landslide area is in basically stable state on the whole(1st-grade slide mass),and in under-stable state locally(2nd-grade slide mass)under normal operating condition,in under-stable state on the whole(1st-grade slide mass) and in sliding state locally(2nd-grade slide mass) under abnormal operating condition I or earthquake.The following measures are suggested: 1.Construct pre-stressed anchorage anti-slide piles at the external side of highway;2.Construct anti-scouring rubble concrete retaining wall at the position of landslide frontal edge crossing exit;3.Plant trees or grass on the slope.
引文
[1]JTJ004-89,公路工程抗震设计规[S].
[2]JTJ064-98,公路工程地质勘察规范[S].
[3]李世海,刘天苹,刘晓宇.论滑坡稳定性分析方法[J].岩石力学与工程学报,2009,28(S2):3309-3324.
[2]JTJ064-98,公路工程地质勘察规范[S].
[3]李世海,刘天苹,刘晓宇.论滑坡稳定性分析方法[J].岩石力学与工程学报,2009,28(S2):3309-3324.
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