American Society of Civil Engineers


Risk Analysis of Oil Pipeline under Collapse and Rockfall at Different Heights of Rock Slope


by Qinglu Deng, (Faculty of Engineering, China University of Geosciences (Wuhan), P.R.China. E-mail: dengqinglu@263.net), Xiaowen Shi, (Faculty of Engineering, China University of Geosciences (Wuhan), P.R.China. E-mail: shixiaowenv@163.com), and Dapeng Zhu, (School of Civil Engineering and Architecture, Southwest Petroleum University, P.R.China. E-mail: zdpcug@126.com)
Section: Hazard Assessments, pp. 469-476, (doi:  http://dx.doi.org/10.1061/41202(423)53)

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Document type: Conference Proceeding Paper
Part of: ICPTT 2011: Sustainable Solutions For Water, Sewer, Gas, And Oil Pipelines
Abstract: Rockfall is one of serious geological disasters that make effect on Lanzhou-Chengdu-Chongqing oil pipeline safety. Taking rock slope at K0526 +300 section of Lanzhou-Chengdu- Chongqing oil pipeline for example, the failure modes of rock slope are generalized through the analysis of the geological structure. According to the joint fracture density and also combining with the 5.12 earthquake collapse features, the possible block size of dangerous rock might fall in the future is judged. Based on kinematics theory, the motion state of rock falling under the different height is analyzed. RocFall software is used to analyze kinetic energy, velocity and falling path, and the location of the falling rock and its changing rule at different heights along the entire slope profile. It provides a scientific evidence for designers to determine the location of the pipeline protection and conservation measures according to kinetic energy and the falling path of rock block.


ASCE Subject Headings:
Risk management
Oil pipelines
Failures
Slopes
China