黑麋峰森林公园景区崩塌地质灾害形成机制与治理研究

Study on Formation Mechanism and Control of Geological Disaster of Collapse in Heimifeng Forest Park

黑麋峰森林公园景区南部由于强降雨作用,发生了一处岩块崩落,通过对崩塌的区域环境和地质条件调查,结合崩塌工程地质特征及变形发育特征现状,分析了不同工况下危岩体稳定性及破坏模式。研究结果表明,特殊的地质环境条件是形成岩体崩塌坠落不稳定的地质基础,风化、根劈及降雨作用对岩体崩塌坠落起到促进作用,人类工程活动是岩体崩塌坠落的不稳定主要外在影响因素。在综合分析已有研究成果的基础上,对崩塌地质灾害分区分类提出了防治思路,拟采取的防治措施包括:危岩体静态爆破分解清除;前缘坡面削坡、分级放坡、设置挡墙;坡体前缘设置主动防护网;坡间设置消能槽或落石平台;后缘修建截排水沟等措施的设置,能达到有效的防治目的。

A rock caving occurred in the south of Heimifeng Forest Park due to heavy rainfall.Based on the investigation of the regional environment and geological conditions of the collapse,combined with the geological characteristics of the collapse engineering and deformation characteristics,the stability and failure mode of the dangerous rock mass under different working conditions were analyzed.The results show that the special geological environment conditions are the geological basis for the instability of rock mass collapse,weathering,root splitting and rainfall play a role in promoting the fall of rock mass,and human engineering activities are the main external factors affecting the instability of rock mass collapse.Based on the comprehensive analysis of the existing research results,this paper puts forward the prevention and control ideas for the zoning classification of the collapse geological disasters.The proposed prevention and control measures include:static blasting decomposition and removal of dangerous rock mass;Cutting slope,grading slope,setting retaining wall;The front edge of slope body is provided with active protective net;Energy dissipation trough or rock fall platform is set between slopes;The measures such as cutting drainage ditch at the back edge can achieve effective prevention and control.