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滨海地区公路地质灾害防治研究

The Study on Highway Geological Hazards Prevention of Coastal Areas

【作者】 李文良

【导师】 焦双健;

【作者基本信息】 中国海洋大学 , 管理科学与工程, 2010, 硕士

【摘要】 滨海地区不仅是我国经济较发达的地区,同时也是我国地质环境较为脆弱及各类地质灾害较为发育的一个地带。随着我国滨海地区公路建设的高速发展,公路地质灾害时常威胁着人民的生命财产安全和公路交通的正常运营。本文依托河北省交通厅项目“滨海公路交通灾害初探”课题的研究,对滨海地区主要的公路地质灾害防灾管理做了系统的研究。(1)论文归纳了公路沿线地质灾害的特点:空间分布差异大、灾害成因复杂、成灾率高、影响面广、工程引发灾害多;针对公路地质灾害问题,收集了大量的资料,确定了滨海地区主要的地质灾害类型:包括地面沉降、海岸侵蚀、砂土液化、滑坡(806处)、泥石流(65处)及崩塌(276处),分析滨海地区公路地质灾害的孕灾环境,地形地貌、岩土类型、气候条件、水系分布、地震、植被覆盖及人类活动等。(2)分析了滨海地区地质灾害的发育、分布特征及主要影响因素,其中,地面沉降主要出现在华北平原和大河三角洲地区,发生的时间长、范围广,在时序上与地下水的开采时间基本对应;海岸侵蚀存在明显的南北差异;滑坡以中小型、土质滑坡为主;泥石流以中小型、山坡性泥石流为主;崩塌以工程崩塌、中小型、土质崩塌为主。(3)以河北省滨海地区为例,对河北省滨海地区的地面沉降、海岸侵蚀灾害及典型性地质灾害进行了分析,包括典型性地质灾害的空间分布特征和主要特点,并进行了危险等级划分,针对不同危险等级地区提出了公路防灾措施及灾害应急规划的建议。公路地质灾害防灾管理研究是一项十分复杂的工作,目前尚处于探索发展阶段。愿同行们在现有基础上,以与时俱进的精神继续探索创新,使滨海地区公路地质灾害管理研究取得更加丰硕的成果,使公路地质灾害减灾更有成效。

【Abstract】 Coastal areas are not only economically developed region in China, but also the area, which have more fragile geological environment and all kinds of geological hazards. As the rapid development of highway construction in China coastal area, Coastal Highway geological hazards often threaten people’s lives and property and the normal operation of highway traffic. The thesis relies on the study of "Hazards of Coastal Highway" of Hebei Province Communications Department’s project, making a systematic study on highway geological hazards.The main contents including:The first step is to collect a great deal of information for highway geological hazards and identifies the main types of geological hazards, including:land subsidence, coastal erosion, soil liquefaction, landslides (eight hundred and six) debris flow (sixty-five) and collapse (two hundred and seventy-six) and analyze the hazards inducing environment for the highway geological hazards, such as topography conditions, soil type, climate, water distribution, earthquake, vegetation cover and human activities etc.What we need to do next is to summary the features of development, distribution and main factors of geological disasters in coastal areas. Subsidence occurred mainly in the North China Plain and the river delta region. Some areas have joined together. Happened a long time and have a wide range, in the timing, basically corresponds to the exploitation of groundwater. Coastal erosion exists obviously difference between north and south, sandy coasts are more serious, such as Liaoning, Hebei, Shandong and Jiangsu provinces. Liquefied sand layer is mainly distributed in China’s coastal plain. Most landslides are small, soil landslide, most of the debris flows are small, slope debris flow, most of the collapses are the project collapsed, small, soil collapse.Finally, the paper presents the planning principles for coastal areas’road and impact factors of highway road planning. According to historical disasters of coastal areas and geography of Hebei Province, the paper divides the risk classification of geological hazards. Finally, this paper proposes coastal highway planning and contingency planning for different geological disasters.As the large-scale development of economic construction in China coastal areas, the highway geological hazards and the damage will likely continue to increase, however, the study of highway geological disaster is a very complex task, and now still at the exploratory stage. This article as an exploration of this work, the research ideas and methods provides a platform for future work, Hope that the colleagues, on the present basis, continue to explore by innovative spirit of the times, so that the coastal areas of highway geological hazard access even more fruitful, and highway geologic hazard mitigations are more effective.

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