發(fā)布時(shí)間：2018-04-18 08:19

  本文選題：中俄東線 + 島狀多年凍土　； 參考：《油氣儲運(yùn)》2017年12期

【摘要】：多年凍土產(chǎn)生的凍脹和融沉可能導(dǎo)致管道變形破壞,探明中俄東線天然氣管道島狀多年凍土的現(xiàn)狀和退化原因非常必要。采用工程地質(zhì)鉆探、地溫測試及高密度電法的綜合勘察方法,對管道沿線16處疑似島狀多年凍土區(qū)進(jìn)行勘察驗(yàn)證;通過搜集管道沿線氣候和森林覆蓋率等資料,分析近年來研究區(qū)域內(nèi)各要素變化趨勢,推測其對凍土環(huán)境的影響。研究表明:由于全球氣候轉(zhuǎn)暖及人為活動(dòng)頻繁等諸多因素,導(dǎo)致東北地區(qū)氣溫升高、森林覆蓋率減少、濕地消失,凍土環(huán)境失去了原有的熱平衡,造成管道沿線島狀多年凍土區(qū)顯著退化;與此同時(shí),20世紀(jì)70年代劃定的東北地區(qū)多年凍土南界呈現(xiàn)明顯北移的趨勢。
[Abstract]:The frost heaving and thawing caused by permafrost may lead to pipeline deformation and destruction. It is necessary to find out the present situation and degradation reasons of the island permafrost along the East Russia natural gas pipeline.In this paper, 16 suspected island permafrost areas along the pipeline are surveyed and verified by engineering geological drilling, ground temperature test and high density electrical method, and the data of climate and forest coverage along the pipeline are collected.This paper analyzes the variation trend of various elements in the study area in recent years, and infer its influence on the frozen soil environment.The results show that due to many factors, such as global warming and frequent human activities, the temperature in Northeast China has increased, forest coverage has decreased, wetlands have disappeared, and the permafrost environment has lost its original heat balance.At the same time, the southern boundary of permafrost in Northeast China is obviously moving northward in the 1970s.
【作者單位】： 中國石油管道局工程有限公司設(shè)計(jì)分公司;
【基金】：中國石油管道局工程有限公司科研課題“中俄原油管道二線多年凍土區(qū)管道設(shè)計(jì)應(yīng)用技術(shù)研究”,GK14-13-A
【分類號】：P642.14

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本文編號：1767544