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A platform for research: civil engineering, architecture and urbanism
Study on the Influence of Landslide Thrusts from Different Directions on Pipelines
Landslide is one of the most familiar geological hazards that happen in mountainous areas, the deformation of which can be of great threat to the safety of buried gas pipelines. In accordance with the characteristics of landslide development along the Zhongxian-Wuhan pipelines, the spacial relationship between landslide and pipelines was summed up. On the basis of engineering geology, elastic mechanics and structural mechanics, the internal force and strength of the pipelines under the action of landslide deformation were analyzed in theoretical calculation. Safety evaluation problems regarding the influence on pipelines due to landslide under thrust from different directions are discussed. The research shows that:(1) under a landslide lateral sliding force, opposite sides and the central part of the pipelines are much more easily damaged, especially at both ends; and (2) under the role of landslide longitudinal friction, the upper side (tensile) and the lower side (compressed) of the pipelines are easily damaged, especially in the lower part of the pipelines. Through the research of engineering practices, a conclusion was reached that a smaller sliding force (i.e., q = 4.5N/m) or slighter whole-round deformation of landslide (i.e., uk = 5mm) is able to lead the stress of gas transmission pipelines to an unsafe condition.
Study on the Influence of Landslide Thrusts from Different Directions on Pipelines
Landslide is one of the most familiar geological hazards that happen in mountainous areas, the deformation of which can be of great threat to the safety of buried gas pipelines. In accordance with the characteristics of landslide development along the Zhongxian-Wuhan pipelines, the spacial relationship between landslide and pipelines was summed up. On the basis of engineering geology, elastic mechanics and structural mechanics, the internal force and strength of the pipelines under the action of landslide deformation were analyzed in theoretical calculation. Safety evaluation problems regarding the influence on pipelines due to landslide under thrust from different directions are discussed. The research shows that:(1) under a landslide lateral sliding force, opposite sides and the central part of the pipelines are much more easily damaged, especially at both ends; and (2) under the role of landslide longitudinal friction, the upper side (tensile) and the lower side (compressed) of the pipelines are easily damaged, especially in the lower part of the pipelines. Through the research of engineering practices, a conclusion was reached that a smaller sliding force (i.e., q = 4.5N/m) or slighter whole-round deformation of landslide (i.e., uk = 5mm) is able to lead the stress of gas transmission pipelines to an unsafe condition.
Study on the Influence of Landslide Thrusts from Different Directions on Pipelines
Li, Huazhang (author) / Yang, Junxia (author) / Deng, Qinglu (author) / Bao, Yong (author)
International Conference on Pipelines and Trenchless Technology 2014 ; 2014 ; Xiamen, China
ICPTT 2014 ; 683-697
2014-12-01
Conference paper
Electronic Resource
English
Study of pipelines subjected to landslide conditions
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