S340杜埠街~大港河段公路改建工程地质灾害危险性评估

Geological disaster hazard assessment of S340 Dubu street to Dagang river section highway reconstruction project

S340杜埠街~大港河段公路改建工程全线位于潜山市龙潭乡境内,处于潜山县崩塌、滑坡、泥石流高易发区(A2)内。为充分保障S340杜埠街~大港河段公路改建工程施工人机有效避免或减少工程建设中或工程建设后可能受到的地质灾害的侵害,并防止地质灾害的进一步加剧,在沿线及影响区范围内开展了地质灾害危险性评估工作。综合前人资料及本次地质灾害调查成果查明了评估区地质环境条件复杂程度及可能发生的地质灾害类型。基于以上,对地质灾害的稳定性、危险性及对工程危害程度进行现状评估,得到区内地质灾害为弱发育;从工程建设中可能引发及工程建设后可能遭受地质灾害角度,对基坑崩塌、沟谷泥石流等地质灾害及挖方切坡、自然斜坡等引发的地质灾害进行预测评估,得到区内地质灾害危害程度小、危险性小。根据现状评估和预测评估的结果,按地质灾害组合类型的不同和危险性级别的差异将评估区划分为崩塌、滑坡、泥石流地质灾害危险性小区(Ⅰ),进而得到区内建设场地适宜性为适宜。本次地质灾害危险性评估工作具备较强的系统性,地质成果及方法依据明确,为S340杜埠街~大港河段公路改建工程建设提供了可靠的地质资料,对评估区内可能发生的地质灾害的综合防治具有重要意义。

The S340 Dubu Street to Dagang River section highway reconstruction project is located in the Qianshan City Longtan Township,in the Qianshan County collapse,landslide,mudslide high susceptibility area(A2)within.In order to fully protect the S340 dubu street~daganghe section of highway reconstruction project construction man-machine to effectively avoid or reduce the construction or engineering construction may be subject to geological hazards,and prevent further aggravation of geological hazards,along the route and the impact area within the geological hazard assessment work.The comprehensive previous information and the results of this geological hazard survey identified the complexity of the geological environment conditions and the types of geological hazards that may occur in the assessment area.Based on the above,the assessment of the stability and danger of geological hazards and the degree of hazard to the project,the geological hazards in the area are weakly developed;from the perspective of the geological hazards that may be triggered during the construction and may be suffered after the construction,the prediction and assessment of the geological hazards caused by the foundation pit collapse,gully mudslide and other geological hazards caused by the excavation slope cutting and natural slope,the degree of hazard of geological hazards in the area is small and The danger is small.According to the results of the current situation assessment and prediction assessment,the assessment area is divided into landslide,landslide and mudslide geological hazard zones(Ⅰ)according to the different types of geological hazard combinations and the difference of hazard levels,and then the suitability of the construction site in the area is suitable.The geological hazard assessment work has a strong systematic nature,and the geological results and methods are based on a clear basis,which provides reliable geological information for the construction of the S340 Dubu Street to Dagang River section highway reconstruction project,and is of great significance for the comprehensive prevention and control of geological hazards that may occur in the assessment area.