忠—武输气管道巴东野三关石马岭危岩特征及防治方案论证

Characteristics and Control of Shimaling Unstable Rock Masses near the Gas Pipeline from Zhongxian to Wuhan in Yesanguan,Badong County,Hubei Province

近年来忠—武输气管道山区段发生了多起危岩坠落冲击管道的事件,已经严重威胁到输气管道正常运行。笔者根据恩施石马岭危岩的发育特征,对石马岭危岩体治理方案进行论证,比较了危岩清方+锚固方案和管道护盖方案,根据本段管道工程所处地形地质条件,认为危岩清方+锚固为优选方案。

Several rock failings have taken place along the Zhongxian-Wuhan gas pipeline since it was put in operation in the end of the year 2004. Falling rocks destroyed the pipeline protection cover and injured the pipeline, thus seriously imperiling the pipeline operation. The characteristics of Shimaling unstable rock masses have been described, and focuses are put on the discussion and determination of the designs for the control of the unstable rock masses. Two design schemes, unstable rock masses cutting ＋ bolting and pipeline covering, have been compared with respect to their advantages and defects. The scheme of unstable rock masses cutting ＋ bolting is believed to be more suitable for the local conditions and the aim of pipeline protection.