摘要
受地形起伏较大、地质条件复杂等因素的制约,部分山区段管道采取横坡敷设,该敷设方式存在安全隐患,有必要对管道横坡敷设条件下的边坡稳定性进行定量分析,制定有针对性的治理措施,确保管道施工和运行安全。基于此,研究了管道横坡敷设诱发的地质灾害特点,采用基于极限平衡理论的条分法进行定量计算,取得原始边坡、扫线边坡及管沟开挖边坡3种工况条件下的稳定系数,并对计算结果进行了分析。结果表明,原始边坡表现得最为稳定,随着扫线和管沟开挖工作的展开,边坡稳定性越来越差。提出避让、治理、防护、限制4种建议措施,并应用于陕京输气管道穿越山间沟谷地段,保障了管道在山区地质灾害条件下的安全运营。
In some mountain areas, the pipelines are laid in the pattern of slope crossing to deal with the undulating landforms and complex geological conditions. However, there are some potential safety hazards in this laying mode. Therefore, it is necessary to conduct a quantitative analysis on the slope stability of this laying mode and develop targeted measures to guarantee the safe construction and operation of pipelines. In this paper, characteristics of geological disasters induced by slope crossing pipeline laying were investigated. Then, stability coefficient under three working conditions （original slope, line cleaning slope and trench excavation slope） was quantitatively calculated by using the method of slices based on limit equilibrium theory, and the calculation results were analyzed. It is shown that the original slope is the most stable. And with the progress of line cleaning and trench digging, the slope stability gets worse and worse. And finally, four measures were proposed, including avoidance, governance, protection and restriction. This mode is actually applied to the Shaanxi-Beijing Gas Pipeline for crossing mountain valleys, and it guarantees the safe operation of pipelines in mountain areas under the conditions of geological disasters. （4 Figures, 3 Tables, 16 References）
作者
郭存杰
张来斌
梁伟
郭晓燕
GUO Cunjie ZHANG Laibin LIANG Wei GUO Xiaoyan(China University of Petroleum （Beijing PetroChina Beijing Gas Pipeline Co. Ltd.)
出处
《油气储运》
CAS
北大核心
2016年第12期1342-1346,共5页
Oil & Gas Storage and Transportation
基金
国家科技支撑计划资助项目"基于风险的油气管道事故预防关键技术研究子任务"
11BAK06B01-11-03
关键词
油气管道
横坡敷设
边坡
稳定性分析
防治措施
oil and gas pipelines, slope crossing laying, slope, stability analysis, control measures
作者简介
郭存杰，男，高级工程师，1978年生，2005年硕士毕业于中国石油大学（HL京）机械电子工程专业，现主要从事长输天然气管道地质灾害风险评价及防治措施的研究工作。地址：北京市房山区良乡金光路8号北京输气管理处，102488。电话：13910134771，Email：1051212786@qq．com
