| 摘要:（摘要内容经过系统自动伪原创处理以避免复制，下载原文正常，内容请直接查看目录。） 多年冻土的工程地质特征及其相干的工程地质成绩是以后油气管道工程扶植中所面对的全球性工程困难。本文以正在计划的中俄原油管道工程为例，从我国高纬度多年冻土区管道工程扶植能够碰到的工程地质成绩动身，在总结中国高纬度地域多年冻土的重要特点和散布纪律的基本上，联合研究区铁道、公路等线状工程扶植理论，论述了与多年冻土有关的工程地质成绩及其构成机理；对多年冻土的工程地质特征停止了体系测试和统计剖析；联合中俄原油管道计划，对管道沿线多年冻土的工程地质前提停止了综合评价，俄语论文范文，具有主要的实际和现实意义。剖析研究注解，研究区内多年冻土的空间散布与纬度、海拔、微地貌和地热交流前提等身分有亲密的关系。整体上，俄语论文题目，多年冻土呈不持续散布，自北向南由年夜片岛状多年冻土区逐步过渡为零碎岛状多年冻土区。因为全球气象变暖，多年冻土的退步趋向比拟显著，从研究区多年冻土的退步表示来看，北部多年冻土退步重要表示为质变进程，而南部量变进程表示凸起。野外埠质查询拜访注解，中俄原油管道工程沿线路过的河漫滩、阶地邻近，多年冻土类型以多冰—富冰—饱冰冻土为主，在池沼地段散布有含土冰层。本文依据年夜量试验数据，体系论述了研究区多年冻土的工程地质特征，包含根本物理目标、热物理目标、力学性质和熔化紧缩性质，在此基本上统计剖析了冻土的强度与负温度、岩性、含水量和外力感化时光等身分之间的相干性。冻土与管道间互相感化的模仿成果注解，夏季埋地管道会形成泥土温度下降，轻易构成对管道的上抬力；夏日埋地管道易招致冻土熔化；冻土的冻胀和融沉均能使管道发生曲折变形。经由过程对冻土与基本间的互相感化进程剖析以为，建(构)筑物的恒载不克不及战胜冻胀力是发生基本冻胀变形损坏的主导身分，冻土熔化时紧缩系数增年夜是正融本地货生融沉的基本缘由。在工程理论中，重视多年冻土区工程经历和测试数据的积聚是非常需要的。本文取得的中俄原油管道工程沿线多年冻土工程特征的基本数据及统计剖析结果，对于往后高纬度多年冻土区冻土工程地质前提的综合评价和冻土工程地质成绩的处理具有较高的适用性和推行价值。 Abstract: The engineering geological characteristics of the frozen soil and the relevant engineering geological achievements are the global engineering difficulties in the construction of oil and gas pipeline engineering. In this paper, the engineering geological achievements of the construction of pipeline engineering in high latitude permafrost regions in China are summarized, and the engineering geological achievements and its mechanism are summarized. The engineering geological characteristics of permafrost regions are studied. The engineering geological characteristics of permafrost regions are analyzed. The integrated evaluation of the engineering geological conditions of the pipeline along the Sino Russian crude oil pipeline is of great practical significance. Analysis of the space in the research area of permafrost, the space distribution and latitude, elevation, micro topography and the exchange of heat and other factors have a close relationship. On the whole, the permafrost is not continuous spread, and from north to south by the island of the eve of the permafrost region gradually transition to the system of fragmented Island permafrost regions. Because the global climate warming, permafrost degeneration tendency compared significantly, from the degeneration of the permafrost in the research area of said point of view, the permafrost in the northern part of regress important said a qualitative change in the process, and southern quantitative process expression is highlighted. Field Bu quality inquires the visit comment, passing along the China Russia crude oil pipeline project in the floodplain and terrace nearby, permafrost types to ice rich ice - ice saturated permafrost dominated and lots in the ponds spread including soil ice. In this paper according to a large number of test data system, discusses the engineering geological characteristics of permafrost in research area, contains the fundamental physics of the target, thermal physics goals, mechanical properties and melting tightening properties, on the basis of statistical analysis the strength of frozen soil and negative temperature, lithology, water content and outside force action time copious between coherence. Frost and the pipeline between the mutual action of the simulating result annotations. In summer the buried pipeline will be the formation of soil temperature decreased, easy to form the pipeline lifting force; summer buried pipeline easily lead to melting permafrost; the frost heave and thaw settlement can make the pipe winding deformation occurs. Through process of frozen soil and basic interaction process analysis thinks, built (structure) constructed from the dead load cannot not overcome frost heaving force is basic frost heave damage to the dominant element and melting permafrost contraction coefficient of enlargement is thawing local goods health melt sinking the basic reason. In the engineering theory, it is necessary to pay attention to the accumulation of engineering experience and test data in permafrost regions. In this paper, the basic data and statistical analysis results of the characteristics of the Sino Russian crude oil pipeline project along the years, the comprehensive evaluation of the geological conditions of the permafrost regions and the treatment of frozen soil engineering geological results have a high applicability and the implementation value. 目录: |
