北京市怀柔区响水湖景区磨石口关崩塌危岩带特征及稳定性评价
|
摘要
北京市怀柔区响水湖景区长城磨石口关北侧山坡,由于修建景区道路切坡形成崩塌危岩带(体),威胁景区人员、文物及道路设施安全。区内危岩体崩塌失稳主要为滑移式和倾倒式两种破坏模式,选择危岩带中的典型危岩体进行稳定性计算分析,以及运动特征分析。经计算分析,边坡危岩带(体)在天然工况下处于稳定状态,在暴雨和地震工况下,抗剪强度降低,多处于欠稳定状态,潜在发生崩塌的可能性,可作为后期治理依据。
The slope on the north side of the Great Wall of the Xiangshui Lake Scenic spot in Huairou District of Beijing has formed collapse dangerous rock zone(body)because of the construction of the road cut slope in the scenic area,which threatens the safety of the scenic area personnel,cultural relics and road facilities.The collapse and instability modes of dangerous rock mass in this area are mainly slip type and overturning type,and the typical dangerous rock mass in dangerous rock zone is selected for stability calculation and analysis,as well as the analysis of motion characteristics.Through calculation and analysis,it is found that the dangerous rock zone(body)on the slope is in a stable state under the natural working condition,and the shear strength decreases under the heavy rain and earthquake conditions,most of which are in an unstable state and the possibility of potential collapse occurs.The above calculation results can be used as the basis for later engineering treatment.
The slope on the north side of the Great Wall of the Xiangshui Lake Scenic spot in Huairou District of Beijing has formed collapse dangerous rock zone(body)because of the construction of the road cut slope in the scenic area,which threatens the safety of the scenic area personnel,cultural relics and road facilities.The collapse and instability modes of dangerous rock mass in this area are mainly slip type and overturning type,and the typical dangerous rock mass in dangerous rock zone is selected for stability calculation and analysis,as well as the analysis of motion characteristics.Through calculation and analysis,it is found that the dangerous rock zone(body)on the slope is in a stable state under the natural working condition,and the shear strength decreases under the heavy rain and earthquake conditions,most of which are in an unstable state and the possibility of potential collapse occurs.The above calculation results can be used as the basis for later engineering treatment.
引文
[1]北京市地质工程设计研究院.旅游景区地质灾害治理工程勘查设计项目(怀柔区)响水湖景区崩塌地质灾害HR-HB-101勘查报告[R].2016.
[2]北京市规划和国土资源管理委员会.地质灾害治理工程实施技术规范(DB11T1524-2018)[S].2018.
[3]叶强,孙军.危岩形成机制及治理措施[J].公路,2002,(1):54-57.
[4]陈洪凯,唐红梅,王林峰,等.危岩崩塌演化理论及应用[M].科学出版社,2009.
[5]陈洪凯,唐红梅,王蓉.三峡库区危岩稳定性计算方法及应用[J].岩石力学与工程学报,2004,23(4):614-619.
[6]中华人民共和国国土资源部.滑坡防治工程设计与施工技术规范(DZ/T 0219-2006)[S].中国标准出版社.
[7]蔡向阳,铁永波.崩塌落石运动计算模型综述[J].地质灾害与环境保护,2016,27(3):101-104.
[8]苏胜忠.边坡工程勘察中崩塌落石运动模式及轨迹分析[J].工程地质学报,2011,19(4):577-581.
[9] CHAU K,WONG R,WU J.Coefficient of restitution and rotational motions of rockfall impacts[J].International Journal of Rock Mechanics and Mining Sciences,2002,39(1):69–77.
[10]叶四桥,陈洪凯,许江.落石运动模式与运动特征现场试验研究[J].土木建筑与环境工程,2011,33(2):18-23.
[11]章广成,向欣,唐辉明.落石碰撞恢复系数的现场试验与数值计算[J].岩石力学与工程学报,2011,30(6):1266-1273.
[12]吕庆,孙红月,翟三扣,等.边坡滚石运动的计算模型[J].自然灾害学报,2003,12(2):79-84.
[2]北京市规划和国土资源管理委员会.地质灾害治理工程实施技术规范(DB11T1524-2018)[S].2018.
[3]叶强,孙军.危岩形成机制及治理措施[J].公路,2002,(1):54-57.
[4]陈洪凯,唐红梅,王林峰,等.危岩崩塌演化理论及应用[M].科学出版社,2009.
[5]陈洪凯,唐红梅,王蓉.三峡库区危岩稳定性计算方法及应用[J].岩石力学与工程学报,2004,23(4):614-619.
[6]中华人民共和国国土资源部.滑坡防治工程设计与施工技术规范(DZ/T 0219-2006)[S].中国标准出版社.
[7]蔡向阳,铁永波.崩塌落石运动计算模型综述[J].地质灾害与环境保护,2016,27(3):101-104.
[8]苏胜忠.边坡工程勘察中崩塌落石运动模式及轨迹分析[J].工程地质学报,2011,19(4):577-581.
[9] CHAU K,WONG R,WU J.Coefficient of restitution and rotational motions of rockfall impacts[J].International Journal of Rock Mechanics and Mining Sciences,2002,39(1):69–77.
[10]叶四桥,陈洪凯,许江.落石运动模式与运动特征现场试验研究[J].土木建筑与环境工程,2011,33(2):18-23.
[11]章广成,向欣,唐辉明.落石碰撞恢复系数的现场试验与数值计算[J].岩石力学与工程学报,2011,30(6):1266-1273.
[12]吕庆,孙红月,翟三扣,等.边坡滚石运动的计算模型[J].自然灾害学报,2003,12(2):79-84.