南龙铁路危岩危石破坏特征及加固技术研究

Research on Damage Characteristics and Reinforcement Technology of Dangerous Rockfall in Nanlong Railway

危岩落石作为一种山区典型性地质灾害,具有调查难度大、危害程度高、影响范围广、加固处理费用高的特征特点,同时其受控因素多、偶发易发,山区工程建设过程中多有发生。以南龙铁路为例,针对危岩落石大范围出露情况,开展模拟仿真,提出分区分段开展危岩落石加固处理,明确同一区域危岩落石可能存在不同风险类型,根据危险程度及出露条件确定危石处理原则,进一步开展加固处理研究,同时提出危岩落石加固处理过程中应同步开展岩堆稳定性、泥石流风险评估,确保工程安全可靠。

As a typical geological disaster in mountainous area,dangerous rockfall is characterized by high difficulty of investigation,high degree of hazard,wide influence range and high cost of reinforcement and treatment.At the same time,it is subject to many controlled factors and is prone to occur sporadically.Disasters often occur in the construction process of mountainous engineering.Taking Nanlong Railway as an example,this paper carries out simulation on large-scale exposure of dangerous rockfall.It is proposed to reinforce dangerous rockfall in zones and sections,and it is clarified that different risk types may exist in dangerous rockfall in the same area.According to the degree of danger and exposure conditions,the treatment principle of dangerous rocks is determined,and reinforcement treatment research is further carried out.At the same time,it is proposed that the stability of rockpile and risk assessment of debris flow should be carried out simultaneously during the reinforcement treatment of dangerous rocks and rockfalls to ensure the safety and reliability of the project.