坦桑尼亚某海湾管道工程海岸滑坡与防治
发布时间：2018-07-28 17:36
【摘要】：海岸滑坡和侵蚀的存在严重影响着管道工程的稳定性,根据多种地球物理勘察手段的识别,查明坦桑尼亚某海湾管道路由区有海岸滑坡、海岸侵蚀、砂土液化和软土震陷等不良地质作用。结合地形、地层、海洋水动力条件等因素,对滑动机理进行综合分析;在分别考虑潮位和不考虑潮位作用下,采用极限平衡理论结合数值模拟分析进行稳定性评价。研究得出:海岸滑坡是第三层淤泥质粉质黏土层液化所导致的,是滑坡向海岸后退式(牵引)滑动的结果。基于滑动原因给出管道改线和防治措施,对海岸滑坡的定性评价有很好的补充,为海岸滑坡的整治提供了科学依据。
[Abstract]:The existence of coastal landslides and erosion seriously affected the stability of pipeline engineering. Based on the identification of various geophysical survey methods, it was found that there were coastal landslides and coastal erosion in a certain Gulf pipeline routing area in Tanzania. Sand liquefaction and soft soil seismic subsidence and other adverse geological processes. Combined with topography, stratum and marine hydrodynamic conditions, the sliding mechanism is comprehensively analyzed, and the limit equilibrium theory combined with numerical simulation analysis is used to evaluate the stability under the consideration of tidal level and without considering tidal level, respectively. The results show that the landslide is caused by the liquefaction of the third layer of silty clay, and is the result of the landslide sliding back to the coast. Based on the sliding reason, the pipeline line modification and prevention measures are given, which is a good supplement to the qualitative evaluation of coastal landslide and provides a scientific basis for the regulation of coastal landslide.
【作者单位】： 中国科学院山地灾害与地表过程重点实验室;中国科学院水利部成都山地灾害与环境研究所;中国科学院大学;中国石油集团工程设计有限责任公司西南分公司;
【基金】：中国科学院山地灾害与地表过程重点实验室、国家重点基础研究发展计划(973计划)(2013CB733205)资助
【分类号】：P75;P642.22
，
本文编号：2151082
[Abstract]:The existence of coastal landslides and erosion seriously affected the stability of pipeline engineering. Based on the identification of various geophysical survey methods, it was found that there were coastal landslides and coastal erosion in a certain Gulf pipeline routing area in Tanzania. Sand liquefaction and soft soil seismic subsidence and other adverse geological processes. Combined with topography, stratum and marine hydrodynamic conditions, the sliding mechanism is comprehensively analyzed, and the limit equilibrium theory combined with numerical simulation analysis is used to evaluate the stability under the consideration of tidal level and without considering tidal level, respectively. The results show that the landslide is caused by the liquefaction of the third layer of silty clay, and is the result of the landslide sliding back to the coast. Based on the sliding reason, the pipeline line modification and prevention measures are given, which is a good supplement to the qualitative evaluation of coastal landslide and provides a scientific basis for the regulation of coastal landslide.
【作者单位】： 中国科学院山地灾害与地表过程重点实验室;中国科学院水利部成都山地灾害与环境研究所;中国科学院大学;中国石油集团工程设计有限责任公司西南分公司;
【基金】：中国科学院山地灾害与地表过程重点实验室、国家重点基础研究发展计划(973计划)(2013CB733205)资助
【分类号】：P75;P642.22
，
本文编号：2151082
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