湿陷性黄土区某长输管道黄土陷穴灾害研究
首发时间:2008-11-17
摘要:通过对某油气管道(兰州至渭源段)沿线黄土陷穴的研究,本文较系统的分析了该线黄土陷穴发育规律及管沟黄土陷穴的成灾原因、致灾过程和机理,认为该线黄土陷穴发育具有一定的规律性;其成灾的本质原因为填土土体强度低,此外气候水文条件和微地形地貌也是主要因素;并初步将陷穴致灾过程划分成五个阶段及定性地分析其在三类微地貌单元的三种致灾机理,为长输管道沿线黄土陷穴灾害的防治提供依据。
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The Study on the Loess-sinkhole Disaster along a Long-distance Pipeline in the Collapsible Loess Area
Abstract:Through the research on the Loess-sinkhole along oil-gas pipeline(from Lanzhou to Weiyuan),a more systematic analysis on the law of the loess-sinkhole and the reasons for the disaster, disaster-causing mechanism and process of Loess-sinkhole along the ditch in this paper, it is thought that Loess-sinkhole development along the line has a certain regularity; the nature of the reasons for the disaster is the low intensity of the fill soil, in addition , climate and hydrological conditions and micro-topography is also a major factor; the sinkhole hazard is initially divided into five stage ,and qualitative analysis on the three disaster-causing mechanism is made on the three micro-topography units, which provide the basis for the prevention and treatment for the Loess sinkhole disaster along long-distance pipeline.
Keywords: long-distance pipelin Loess-sinkhole development of the law soil strength
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No.2574731948212269****
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