基于三维激光扫描的高陡边坡勘查与支护设计

Exploration and Support Design of High and Steep Slope Based on 3D Laser Scanning

以广东清远银湖城复杂高陡边坡为依托,采用三维激光扫描技术,查明边坡的空间展布形态、优势结构面的空间分布特征,为边坡设计提供依据。基于三维激光扫描调查和边坡稳定性评价结果,对挖方土岩组合高边坡,上部土体采用“放坡+锚杆格构梁”,中下部岩体采用“削坡+马道挡石墙”的治理措施;对填方边坡,采用“强夯加固+扶壁式或重力式挡墙直立式支挡+坡率加筋土+坡面浆砌石格构梁防护相结合”的治理措施。生态修复效果良好,经济效益显著。

Based on the complex high and steep slopes project of the Silver Lake Cty,3D laser scanning technology is adopted to identify the spatial spreading pattern of slopes,the spatial distribution of dominant of the characteristic structural surfaces,which provides a basis for the design of slopes.Based on the investigation of 3D laser scanning and the results of slope stability evaluation,for the excavated soil-rock combination of high slopes,the upper soil body adopts"slope release+anchor lattice beams",and the middle and lower rock body adopts"slope cutting+Mado stone wall"as the management measures,and for the fill slope,it adopts"strong tamping reinforcement".For the fill slope,the management measure of"strong tamping reinforcement,vertical support of buttress type or gravity type retaining wall,reinforced soil at slope rate and slurry masonry lattice girder protection at slope face"is adopted,which has good ecological restoration effect and remarkable economic benefit.