甘肃西和县西山H1-2滑坡防治工程勘查研究

发布时间：2018-06-12 03:10

本文选题：滑坡 + 勘查　；参考：《长安大学》2017年硕士论文

【摘要】：滑坡是一种常见的地质灾害,近年来随着人类工程活动的加剧和气候条件的恶化,每年均有人民生命丧生于滑坡,且造成的经济损失数以亿计,滑坡严重威胁着国家财产和人民生命安全。随着国家提出构建和谐社会,提倡“以人为本”号召,我国逐年加大了对地质灾害的研究、治理。滑坡勘查工作作为防治工程的前期工作显得尤为重要,合理有效的勘查工作,直接影响防治工程的决策。本次研究区范围主要为西山滑坡H1-2区域,根据野外勘查,该区灾害体主要威胁西和县的城区漾水河左岸区域及西山坡体的住户,威胁人口及财产巨大,威胁范围内有南关村、中山村长住居民约178户,加之县城城区住户和大量的流动人口,共计威胁人口约3000人,另外有农田山地15多亩、县城大量的社会公共资源,威胁资产至少为5亿元。采用综合勘查手段与方法,查明研究区地质环境条件;查明H1-2滑坡的基本特征(形态、边界、范围、规模、物质结构、变形破坏特征等)及危害对象;分析其稳定性影响因素、形成机制及破坏模式等;评价稳定性状况,分析H1-2滑坡的发展趋势;为防治工程设计提供可靠的地质依据。勘查结果表明H1-2滑坡:在自重工况下处于基本稳定—稳定状态;在不利工况下处于欠稳定—不稳定状态;X1不稳定斜坡段在自重工况下处于欠稳定状态,在暴雨、地震不利工况下处于欠稳定—不稳定状态;综合评价分析认为,本次西山滑坡勘查段H1-2滑坡稳定性差,X1不稳定斜坡处于稳定性较差—稳定性差。考虑H1-2滑坡的地质结构特点和稳定性现状,建议采取抗滑桩支挡+地表排水+防护栏工程进行综合防治措施。
[Abstract]:Landslide is a common geological disaster. In recent years, with the aggravation of human engineering activities and the deterioration of climatic conditions, people die in landslides every year, and the economic losses caused by landslides are in the hundreds of millions. Landslide is a serious threat to national property and the safety of people's lives. With the proposal of building a harmonious society and the call of "people-oriented", China has increased the research and management of geological disasters year by year. As a preliminary work of prevention and control engineering, landslide exploration work is particularly important. Reasonable and effective exploration work directly affects the decision-making of prevention and control engineering. The scope of this study area is mainly Xishan landslide H1-2 area. According to field survey, the disaster bodies in this area mainly threaten the residents on the left bank of Yangshuihe River and the western hillside body in Xihe County, and threaten the population and property. Within the threat range, there is Nanguan Village. The head of Zhongshan village lives in about 178households, in addition to the residents of the county and city and a large number of floating population, a total of 3000 people are threatened. In addition, there are more than 15 acres of farmland and mountainous areas, and a large number of social and public resources in the county, threatening assets of at least 500 million yuan. By means and methods of comprehensive exploration, the geological environment conditions of the study area, the basic characteristics (shape, boundary, scope, scale, material structure, deformation and failure characteristics, etc.) of the H1-2 landslide and its harmful objects are found out, and the influencing factors of its stability are analyzed. The formation mechanism and failure mode of H1-2 landslide are evaluated, the development trend of H1-2 landslide is analyzed, and the reliable geological basis is provided for the design of prevention and control engineering. The survey results show that the H1-2 landslide is basically stable and stable under deadweight condition, and under unsteady and unstable condition under unfavorable condition. The comprehensive evaluation analysis shows that the stability of H1-2 landslide in the exploration section of Xishan landslide is poor and the stability of X1 unstable slope is poor. Considering the characteristics of geological structure and stability of the H1-2 landslide, it is suggested that comprehensive prevention measures should be taken for the anti-slide pile supporting the surface drainage fence project.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P642.22

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