摘要
漠大管道途经我国纬度最高、极端温度达-52.3℃的高寒地带,是我国第1条完全意义上穿越永冻土区域的大口径长输原油管道,所经过的漠河-加格达奇大杨树段共计440km的管道穿越大兴安岭多年冻土区域,包括连续冻土、不连续冻土和岛状冻土。管道沿线地势北高南低,北部地形起伏较大,沿线为大兴安岭低山、丘陵及河谷地貌,南部为松嫩平原,地形平坦开阔,地理环境复杂,极易发生冻胀融沉、崩塌、热融滑坡、水毁冲蚀(坍岸)等地质灾害。分析了漠大管道穿越冻土区域所面临的热融滑坡、冻胀、融沉以及弯曲、翘曲等特有的地质灾害风险,提出了灾害管理和风险应对措施的建议。
Mohe-Daqing Oil Pipeline,with the highest latitude in China,is the first complete pipeline of China in distance and diameter constructed in permafrost regions,where the lowest temperature in winter is at-52.3 ℃.There are about 440 km-long pipeline(Mohe-Dayangshu section of Jiagedaqi)traversing over the Greater Higgnan Mountains' permafrost regions,which are consisted of the continuous permafrost and discontinuous permafrost including segregated frozen ground.The terrain which the pipeline is located at is higher in the North and lower in the South;great ups and downs are in the Northern area;the mountains,hills and river-valley landforms spread over the pipeline.The Southern area,the Songnen Plain,is flat and open with complicated geographic environment,and the geological disasters such as frost thawing,avalanche,melting landslide,water damage erosion(bank collapse)and so on are easy to happen.All the above risks possible in Mohe-Daqing Oil Pipeline are discussed in the paper.Hazard management and risk mitigation measures are presented.
出处
《油气储运》
CAS
北大核心
2011年第8期621-623,592,共3页
Oil & Gas Storage and Transportation
