基于GIS及耦合协调原理的长输管道山洪泥石流风险性评价

	基于GIS及耦合协调原理的长输管道山洪泥石流风险性评价
其他题名	Risk assessment on mountain torrents and debris flows along long-distance pipelines based on the GIS and coupling-coordination principle
	熊俊楠 1; 孙明远 2; 孙铭 3
	2019
发表期刊	天然气工业
ISSN	1000-0976
卷号	39 期号:3 页码:116-124
摘要	Debris flows and mountain torrents are the main geologic disasters affecting the safe operation of long-distance oil and gas pipelines in mountainous areas. It is of great significance to carry out risk assessment on the disasters of debris flows and mountain torrents along long-distance oil and gas pipelines to prevent and alleviate the losses. In this paper, the Guangyuan section of the Lanzhou- Chengdu-Chongqing long-distance oil and gas pipeline was taken as the research object. Based on the coupling-coordination principle, an overall risk evaluation system was divided into two subsystems, i.e., a pipe subsystem and a natural environment subsystem. The pipe subsystem includes 5 indicators: depth, included angle (included angle between pipe and slope unit), wall thickness, defect density and position (distance between pipe and slope unit). The natural environment subsystem includes 9 indicators: slope direction, slope, elevation, normalized differential vegetation index (NDVI), annual average precipitation, height difference, topographic section curvature, distance between pipe and fault, and geological lithology. Then, the weight of each indicator was determined by means of entropy weight method. Finally, the coupling-coordination model for the system was established by using the GIS technology, and the risk level of the long-distance pipeline in this area was defined. And the following research results were obtained. First, the coupling coordination degree is better accordant with the risk degree. Second, the risk degree and coupling coordination degree of the pipeline in the southern part of the study area are higher, which indicates that the natural environment, geological structure and climate change in this area tend to induce natural disasters easily, e.g. mountain torrents and debris flows. Third, the weight of the defect density of pipe subsystem and that of the NDVI index of natural environment subsystem are the highest, so it is recommended to strengthen monitoring pipe damage and vegetation change in the Guangyuan pipeline section. In conclusion, this evaluation method can reflect the actual field situations rapidly and accurately and it is better applicable in pipeline risk evaluation.
其他摘要	山洪泥石流是影响山区长输油气管道安全运营的主要地质灾害,开展长输油气管道山洪泥石流灾害风险评价有助于预防和减轻其所造成的损失。为此,以兰成渝长输油气管道广元段为例,基于耦合协调原理,将风险评价总系统分解为管体和自然环境2个子系统,前者包括埋深、夹角(管体与斜坡单元夹角)、壁厚、缺陷密度、位置(管体距斜坡单元距离)共5个指标,后者则包括坡向、坡度、高程、植被覆盖指数、年平均降水量、高差、地形剖面曲率、距断层距离、地质岩性等9个指标,利用熵权法确定了不同指标的权重,进而结合GIS技术构建系统耦合协调模型,确定了该区长输管道的风险等级。研究结果表明:①耦合协调度与风险度具有较好的一致性;②研究区南部区域管道的风险度和耦合度均偏高,该区的自然环境、地质构造和气候变化更易诱发山洪泥石流自然灾害;③管体子系统中的缺陷密度、自然环境子系统中的归一化植被指数(NDVI)分别占最大权重,广元段管道应加强管体损坏与植被变化监测。结论认为,该评价方法能迅速而准确地反映现场实际情况,可以较好地应用于管道风险评价。
关键词	长输管道山洪泥石流风险评价耦合协调模型 GIS 熵权法风险等级兰成渝长输油气管道 Long-distance pipeline Mountain torrent Debris flow Risk assessment Coupling-coordination model GIS Entropy weight method Risk level Lanzhou-Chengdu-Chongqing long-distance oil and gas pipeline
收录类别	CSCD
语种	中文
WOS关键词	Energy & Fuels
WOS研究方向	Science & Technology
WOS类目	ENERGY FUELS
CSCD记录号	CSCD:6461612
引用统计	被引频次：5[CSCD] [CSCD记录]
文献类型	期刊论文
专题	任务一_子任务一循证社会科学证据集成任务一
作者单位	1.西南石油大学土木工程与建筑学院 2.西南石油大学土木工程与建筑学院 3.四川省第一测绘工程院
推荐引用方式 GB/T 7714	熊俊楠,孙明远,孙铭. 基于GIS及耦合协调原理的长输管道山洪泥石流风险性评价[J]. 天然气工业,2019,39(3):116-124.
APA	熊俊楠,孙明远,&孙铭.(2019).基于GIS及耦合协调原理的长输管道山洪泥石流风险性评价.天然气工业,39(3),116-124.
MLA	熊俊楠,et al."基于GIS及耦合协调原理的长输管道山洪泥石流风险性评价".天然气工业 39.3(2019):116-124.