坠落式危岩对输油管道的影响评价  

Evaluation on the impact of fall unstable rocks on products pipeline

作　　者：谭超[1] 潘国耀[1] 刘宗祥[1] 王林 

机构地区：[1]四川省地质工程勘察院,四川成都610072 [2]中油管道西安输油气分公司,陕西西安710018

出　　处：《油气储运》2011年第11期805-807,815,共4页Oil & Gas Storage and Transportation

摘　　要：危岩是兰成渝输油管道沿线分布最广的地质灾害之一,以坠落式、滑塌式类型为主,其中坠落式危岩对输油管道的安全威胁极大。选取兰成渝输油管道K0510+700典型的坠落式危岩体为例,从危岩的基本特征、破坏机制、影响因素等方面进行定性分析;运用能量守恒原理定量计算危岩坠落时的最大陷入深度、最大冲击力。分析表明:该类危岩对管道的破坏与坠落危岩体体积、坠落高度、触地面积密切相关。危岩块体越大,坠落高度越高,触地面积越小,危岩体坠落陷入土体深度越大,对输油管道的冲击力越大。提出了危岩体风险消减措施,可供同类危岩的防治借鉴。As one of the most universally-distributed geological disasters in Lanzhou-Chengdu-Chongqing Products Pipeline,unstable rocks can be classified mainly as two types in view of unstable modes,that is,fall unstable rock and slided unstable rock,among which the former will more likely to bring very significant danger to the products pipeline.Taking the typical unstable rock located at the K0510+700 Lanzhou-Chengdu-Chongqing Products Pipelines as an example,qualitative analysis is made in terms of the basic characteristics,damage mechanisms and influence factors of unstable rocks,and the principle of the energy conservation is used to quantitatively calculate the maximum in-depth and impact force when the unstable rock falls.Calculation indicates that the damage from the fall unstable rock on the products pipeline is closely related with its size,the height of fall and contact area to the ground.The bigger the rock is,the higher the fall will be whilst the smaller the contact area to the ground will be accordingly;thus the depth of rock falling into the soil will be bigger,and this brings heavier impact to the products pipeline.This paper proposes relevant measures to eliminate the impact of unstable rocks,which may be referred in preventing against those rocks.

关 键 词：输油管道 坠落式危岩体 最大冲击力 评价 

分 类 号：TE832[石油与天然气工程—油气储运工程]