临时竖向钢支撑在危岩治理工程中的应用  

Application of temporary vertical steel bracing in dangerous rock mass treatment engineering

作　　者：刘伍 樊金桂 郝龙 刘延鹏 徐林山 金珊珊 LIU Wu;FAN Jingui;HAO Long;LIU Yanpeng;XU Linshan;JIN Shanshan(Beijing Institute of Mineral Geology,Beijing 101500,China;Beijing 101 Geological Co.,LTD.Beijing 101500,China)

机构地区：[1]北京市矿产地质研究所,北京101500 [2]北京市一零一地质有限公司,北京101500

出　　处：《城市地质》2025年第1期134-142,共9页Urban Geology

摘　　要：石景山危岩体(WYT6)崩塌破坏模式整体上属于滑移式,经稳定性计算分析,该危岩体在暴雨及地震工况下,均处于不稳定状态。该危岩体下端完全处于“悬挑落空状态”,悬挑进深达3 m,上下悬空达9.4 m,且悬挑区的岩石节理裂隙极为发育、岩块松动、偶有掉块落石。在对危岩体治理施工过程中,必须采取有效的“施工安全措施”,既保证施工工程安全、更须确保施工人员的生命安全。该危岩体的治理方案是采用浆砌石对“悬挑落空区”进行嵌补,同时提前对“悬挑落空区”采用“临时竖向钢支撑”进行保护。经实施及竣工后,对其进行保护及治理效果评价。评价结果表明,危岩体及其下方的浆砌石砌体整体稳定、治理效果较好。The collapse failure mode of Shijingshan dangerous rock(WYT6)studied in this paper belongs to the sliding mode as a whole.After stability calculation and analysis,the dangerous rock mass is in an unstable state under the conditions of rainstorm and earthquake.At the same time,what is more dangerous is that the lower end of the dangerous rock mass is completely in an"overhang failure state"with Cantilever depths of 3m,and up and down hanging to 9.4 m.In the overhanging area,the rock joints and cracks are very developed,the rock blocks are loose,and occasionally the rocks fall.Obviously,in the treatment and construction of the dangerous rock mass,effective"construction safety measures"must be taken,not only to ensure the safety of the construction project,but also to ensure the life safety of the construction personnel.The concrete treatment plan of the dangerous rock mass is to use slurry masonry to insert into the"overhanging area".At the same time,"temporary vertical steel support"is adopted to protect the"overhang failure area"as a pre-treatment.After completion of the treatment project,the effect of protection and treatment is evaluated.For the"dangerous rock mass in the state of overhanging failure",the use of"temporary vertical steel support"protection measures prove to be effective,and has a reference value for similar treatment projects.

关 键 词：悬挑落空状态危岩体 浆砌石砌筑嵌补 施工安全措施 临时竖向钢支撑 

分 类 号：TU7[建筑科学—建筑技术科学]