织毕铁路法启巨型岩堆稳定性分析

Analysis of Stability of Faqi Huge Rock Pile along Zhijin-Bijie Railway

研究目的:岩堆在西南山区分布广泛,山区铁路选择线路位置时不可避免穿越岩堆。分析评价岩堆的发展阶段、稳定性及其对工程的影响,对合理选择线路位置和工程措施有决定性作用。本文结合工程实际,对织毕铁路法启巨型岩堆稳定性及其对工程的影响进行了评价,提出减少扰动岩堆的应对措施。研究结论:(1)大多数巨型岩堆形成年代久远,已获得自身的稳定或平衡,岩堆处于稳定状态;(2)评价岩堆对合理选择线路位置和工程措施有决定性作用;(3)岩堆处于稳定状态,线路以可靠工程从岩堆适当部位通过;(4)当岩堆仍处于稳定状态时,不应对岩堆整体加固;(5)本文提出对岩堆深入调查研究,利于节省工程投资,对合理选择线路位有一定参考意义。

Research purposes： Rock pile is widely distributed in the mountain area in the southwest in China, and the mountain railway has to cross the rock pile area. The analysis and evaluation of the development stage and the stability of the rock pile and their influences on the engineering are crucial to the railway alignment and choice of the engineering measures. In this paper, compared with the actual works, the evaluation is made on the stability of the Faqi huge rock pile along the Zhijin -Bijie Railway and its influence on the engineering, and the corresponding measures are presented for reducing the disturbance to the rock pile. Research conclusions： （ 1 ） Most of the huge rock piles have been formed for a long time and they are in steady state because they have obtained their stability or equilibrium. （2） The evaluation of the rock pile is crucial to the reasonable railway alignment and the reasonable selection of the engineering measures. （3） If the rock pile is in steady state, the railway ean cross the rock pile area in appropriate position by taking the reliable engineering measures. （4） When the rock pile is still in stable state, it is unnecessary to do the overall reinforcement to the rock pile. （5）The deep study on the rock pile presented in this paper is good for saving the engineering investment and has a certain reference significance to railway alignment.