中俄原油管线高纬度多年冻土分布特征

发布时间：2018-03-02 12:26

本文选题：中俄原油管线　切入点：高纬度多年冻土　出处：《黑龙江大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着国家经济和社会发展,我国新能源安全战略的进一步实施,中俄原油管道工程沿线途经我国东北高纬度多年冻土地区,多年冻土的融沉和冻胀等一系列工程地质问题成为制约该工程的重要方面,本文依托中俄原油管道工程,从分利用在多年冻土场建立的观测资料及气象水文资料,结合中俄原油管道工程运行,系统研究高纬度冻土区冻土的工程地质特性及其在不同条件下的变形特征,根据中俄原油管线高纬度多年冻土的基本概念和基本特征,以及多年冻土的现状和成因,深入分析中俄原油管线高纬度多年冻土的保护对策及综合评价,不仅可以为国家重大工程规划设计及冻土灾害防治提供详细的工程地质资料和决策依据,而且在冻土工程地质研究方面具有重要的理论意义。探讨多年冻土的分布、纬度和海拔的关系,研究区的自然条件(气候,植被和自然景观)从南到北,明显的纬度地带性；研究区冻土的分布及发育状况差与微地貌特征关系密切,通常是冻土在低洼的部位比高凸部位发育程度高厚度大,这与我国西部高山和高原地区多年冻土截然不同。通过地质和室内试验,分析了野外调查表明,野外地质调查和室内试验,提出中俄原油管道工程沿线多年冻土分布特点。
[Abstract]:With the development of national economy and society and the further implementation of China's new energy security strategy, the Sino-Russian crude oil pipeline project passes through the permafrost region of high latitude in northeast China. A series of engineering geological problems, such as thawing and frost heaving of permafrost, have become an important factor restricting the project. Based on the Sino-Russian crude oil pipeline project, this paper makes use of the observation data and meteorological and hydrological data established in permafrost field separately. Combined with the engineering operation of Sino-Russian crude oil pipeline, the engineering geological characteristics and deformation characteristics of permafrost in high latitude permafrost regions are systematically studied. According to the basic concepts and characteristics of permafrost in high latitudes of Sino-Russian crude oil pipelines, As well as the present situation and cause of formation of permafrost, the protection countermeasures and comprehensive evaluation of permafrost in high latitude of Sino-Russian crude oil pipeline are deeply analyzed. It can not only provide detailed engineering geological data and decision basis for planning and design of national major projects and prevention and control of permafrost disasters, but also have important theoretical significance in the research of frozen soil engineering geology. The distribution of permafrost is discussed. The relationship between latitude and altitude, the natural conditions (climate, vegetation and natural landscape) of the study area from south to north, the obvious latitude zonation, the distribution and development of permafrost in the study area are closely related to the characteristics of microgeomorphology, Generally, the frozen soil is more developed in low-lying areas than in high-convex regions, which is quite different from permafrost in the high mountains and plateau regions of western China. Through geological and laboratory tests, the field investigation shows that the permafrost is different from the high-altitude permafrost in the western part of China. The distribution characteristics of permafrost along Sino-Russian crude oil pipeline project are put forward by field geological investigation and laboratory test.
【学位授予单位】：黑龙江大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TE973;TU445

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