横向滑坡对管道的影响试验

doi:10.7623/syxb201104026

石油学报 ›› 2011, Vol. 32 ›› Issue (4): 728-732.DOI: 10.7623/syxb201104026

• 石油工程 • 上一篇

横向滑坡对管道的影响试验

林冬 1 雷宇 1 许可方 1 黄润秋 2 朱勇 1 罗敏 1 陶宏伟 1

1中国石油西南油气田公司四川成都 610213； 2成都理工大学地质灾害防治与地质环境保护国家重点实验室四川成都 610059

收稿日期:2010-10-21 修回日期:2011-03-10 出版日期:2011-07-25 发布日期:2011-09-22
通讯作者: 林冬
作者简介:林冬，男，1977年11月生，2007年获四川大学工学博士学位，现为中国石油西南油气田公司高级工程师，主要从事输气管道安全及完整性科研工作。
基金资助:
中国石油西南油气田公司博士后科研项目（20080307-11）“地质滑坡对输气管道的力学影响研究”资助。

An experiment on the effect of a transverse landslide on pipelines

LIN Dong 1 LEI Yu 1 XU Kefang 1 HUANG Runqiu 2 ZHU Yong 1 LUO Min 1 TAO Hongwei 1

Received:2010-10-21 Revised:2011-03-10 Online:2011-07-25 Published:2011-09-22

摘要/Abstract

摘要：

滑坡灾害在油气管道沿线时有发生，严重危及管道的完整性。目前滑坡对管道影响的实验研究以小比例模型实验居多，实验方法本身存在着管道相似材料制作困难和模型畸变等问题。采用人工堆积的方法构建了埋设219 mm口径管道的全尺寸土质滑坡模型，进行了滑坡对管道力学影响试验。采用前缘开挖及后缘注水的方式诱发坡体滑动，利用测斜仪和应变计监测滑坡体的变形以及管道的变形和应力。结果表明，边坡前缘临空条件和地下水条件是影响管道滑坡稳定性的关键因素。管道在下滑力的作用下出现了明显的变形，主要的破坏方式为梁式弯曲，应力最大点位于滑坡宽度中心和滑坡左右边界处。

关键词: 横向滑坡, 油气管道, 模型试验, 应力, 变形

Abstract:

Landslide is a geological hazard that commonly occurs along oil-gas delivery pipelines. At present, most experimental researches on the landslide risk to pipelines remain in a small-scale model experiment that has some problems in experimental methods, such as a difficulty in making a similar material to the real pipeline, distortion of models etc.. To solve these problems, an experiment on the effect of a transverse landslide on pipelines was conducted by means of building a full-scale soil landslide model that buries a pipeline with 219mm diameter. A landslide was induced by front edge excavation and posterior edge water injection. The deformation of sliding mass and pipelines and the stress of pipelines were monitored by an inclinometer and a strain gauge, respectively, during the test. The results showed that free-face conditions of side-slope front edges and underground water were the key factors to affect pipeline landslide stability. The major deformation of pipelines bended to downward sliding force and the main failure mode was subject to girder-like bending. The maximum stress was located in the center of landslide width and bilateral boundaries of landslide.

Key words: transverse landslide, oil-gas pipeline, model experiment, stress, deformation

林冬雷宇许可方黄润秋朱勇罗敏陶宏伟. 横向滑坡对管道的影响试验[J]. 石油学报, 2011, 32(4): 728-732.

LIN Dong LEI Yu XU Kefang HUANG Runqiu ZHU Yong LUO Min TAO Hongwei. An experiment on the effect of a transverse landslide on pipelines[J]. Editorial office of ACTA PETROLEI SINICA, 2011, 32(4): 728-732.

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横向滑坡对管道的影响试验

An experiment on the effect of a transverse landslide on pipelines

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