基于极限平衡法的边坡管道安全度研究

Study on Safety Degree of Slope Pipeline Based on Limit Equilibrium Method

结合岩土力学极限平衡法的基本理论与管道屈服强度,提出边坡管道安全度评价方法。通过计算边坡结构面位置、最大土压力和管道最大承压能力,得出边坡管道安全度P,依据P值大小判断边坡安全性。采用上述方法对坂澜大道双阀室东边坡和Z145号桩边坡展开评价分析,认为应该优先治理坂澜大道双阀室东边坡。

Combined with the basic principle of rock and soil mechanics limit equilibrium method andpipeline yield strength, the slope pipeline safety degree evaluation method is put forward. The safety degree P of slope pipeline is obtained by calculating the slope structural surface position, maximum earth pressure and the load-bearing capacity of the pipeline. The safety of the slope is estimated according to the value P. The slope at the east side of double valve room atBanlan Avenue and the slope at the stake No. Z145 are evaluated and analyzed by the above-mentioned method. It is concluded that the slope at the east side of double valve room at Banlan Avenue should be pref- erentially governed.