新疆S316公路沿线黄土滑坡成因机制及防治对策
发布时间：2018-11-14 16:07
【摘要】：伊犁谷地是新疆地区黄土滑坡最为发育的地区之一,对山区公路建设和运营影响较大。由于其独特的黄土沉积环境和湿润气候背景,黄土滑坡形成条件和成灾机制有别于其他地区,区域特征显著,但当前缺少针对性的研究和系统性的认识。文中选取新疆伊犁S316公路沿线发育的黄土滑坡为研究对象,基于工程地质勘探、区域地质调绘、气象资料分析等,认为公路沿线黄土滑坡是独特黄土地貌演变过程中动力地质作用的产物,具有分布广泛、类型多样和暴发频率高等特点,其变形破坏过程概况为:张裂—蠕动—滑移模式,破坏方式为后缘张裂与单一平面滑动;公路沿线黄土滑坡具有显著的斜坡地形和季节性分布规律,其形成受控于特殊气候、地层、地形、地震和人类活动等,特殊组构黄土是滑坡发生的内在物质基础,春夏季融水和暴雨的耦合是控制黄土滑坡大量发育的第一诱发要素;基于滑坡灾害规模和危害程度分类,提出公路沿线典型黄土滑坡的处置方案和治理对策。研究成果可为S316公路建设中防灾减灾提供基础信息和技术依据,对区域类似公路工程建设提供技术指导和参考。
[Abstract]:Yili Valley is one of the most developed areas of loess landslide in Xinjiang, which has great influence on highway construction and operation in mountainous area. Because of its unique loess sedimentary environment and humid climate background, the forming conditions and mechanism of loess landslide are different from other regions, and the regional characteristics are remarkable. However, there is a lack of targeted research and systematic understanding at present. In this paper, the loess landslide developed along Yili S316 highway in Xinjiang is selected as the research object, based on engineering geological exploration, regional geological mapping, meteorological data analysis, etc. It is considered that the loess landslide along the highway is the product of dynamic geological action in the course of the unique loess geomorphologic evolution. It has the characteristics of wide distribution, various types and high frequency of outbreak. The general situation of the deformation and failure process is as follows: tension-creeping slip model. The failure mode is the extension crack of the rear edge and the single plane sliding. Loess landslide along highway has obvious slope topography and seasonal distribution law, its formation is controlled by special climate, stratum, topography, earthquake and human activity. Special fabric loess is the inherent material foundation of landslide occurrence. The coupling of melting water and rainstorm in spring and summer is the first inductive factor to control the development of loess landslide. Based on the classification of landslide disaster scale and hazard degree, the disposal scheme and control measures of typical loess landslide along highway are put forward. The research results can provide basic information and technical basis for disaster prevention and mitigation in S316 highway construction, and provide technical guidance and reference for similar highway construction in the region.
【作者单位】： 新疆维吾尔自治区交通规划勘察设计研究院;
【基金】：国家自然科学基金,项目编号41602331 中国沙漠气象科学研究基金,项目编号Sqj2015015 中国博士后基金,项目编号2016M602951XB 新疆维吾尔自治区交通运输厅科技项目,项目编号2015-17
【分类号】：P642.22
[Abstract]:Yili Valley is one of the most developed areas of loess landslide in Xinjiang, which has great influence on highway construction and operation in mountainous area. Because of its unique loess sedimentary environment and humid climate background, the forming conditions and mechanism of loess landslide are different from other regions, and the regional characteristics are remarkable. However, there is a lack of targeted research and systematic understanding at present. In this paper, the loess landslide developed along Yili S316 highway in Xinjiang is selected as the research object, based on engineering geological exploration, regional geological mapping, meteorological data analysis, etc. It is considered that the loess landslide along the highway is the product of dynamic geological action in the course of the unique loess geomorphologic evolution. It has the characteristics of wide distribution, various types and high frequency of outbreak. The general situation of the deformation and failure process is as follows: tension-creeping slip model. The failure mode is the extension crack of the rear edge and the single plane sliding. Loess landslide along highway has obvious slope topography and seasonal distribution law, its formation is controlled by special climate, stratum, topography, earthquake and human activity. Special fabric loess is the inherent material foundation of landslide occurrence. The coupling of melting water and rainstorm in spring and summer is the first inductive factor to control the development of loess landslide. Based on the classification of landslide disaster scale and hazard degree, the disposal scheme and control measures of typical loess landslide along highway are put forward. The research results can provide basic information and technical basis for disaster prevention and mitigation in S316 highway construction, and provide technical guidance and reference for similar highway construction in the region.
【作者单位】： 新疆维吾尔自治区交通规划勘察设计研究院;
【基金】：国家自然科学基金,项目编号41602331 中国沙漠气象科学研究基金,项目编号Sqj2015015 中国博士后基金,项目编号2016M602951XB 新疆维吾尔自治区交通运输厅科技项目,项目编号2015-17
【分类号】：P642.22
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