贵州省德江县大兴社区危岩体稳定性评价与治理设计
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摘要
论文以贵州省德江县大兴社区崩塌为例开展了居民区危岩体稳定性分析及治理设计研究。通过结合现场调研及室内分析,揭示了该危岩体变形破坏的机制为:该危岩体在重力或较大下滑力作用时,岩体因重心作用下滑移产生崩塌。通过计算得出该危岩体在天然工况与暴雨工况下处于欠稳定状态,在地震工况和暴雨加地震工况下处于不稳定状态,并通过数值模拟方法对计算结果进行验证。最后,文章针对该危岩体文章提出了针对性的治理措施:清除破碎危岩体、暂时封闭道路、锚索注浆与主动防护网相结合的加固方法、修建截水沟并建议将其纳入群测群防体系中。
Taking the collapse of Daxing community in Dejiang County of Guizhou Province as an example, the stability analysis and control design of dangerous rock mass in residential areas are studied. Based on field investigation and laboratory analysis, this paper reveals that the deformation and failure mechanism of the dangerous rock mass is that the rock mass collapses due to the slip of gravity or large sliding force. It is concluded that the dangerous rock mass is in an unstable state under natural and rainstorm conditions, and is in an unstable state under earthquake and rainstorm plus earthquake conditions. Finally, this paper puts forward the corresponding measures for the dangerous rock mass:clearing the broken rock mass, temporarily closing the road, anchor grouting and active protective mesh combined with the reinforcement method, the construction of water cut ditch and the proposal to incorporate it into the group observation and mass prevention system.
Taking the collapse of Daxing community in Dejiang County of Guizhou Province as an example, the stability analysis and control design of dangerous rock mass in residential areas are studied. Based on field investigation and laboratory analysis, this paper reveals that the deformation and failure mechanism of the dangerous rock mass is that the rock mass collapses due to the slip of gravity or large sliding force. It is concluded that the dangerous rock mass is in an unstable state under natural and rainstorm conditions, and is in an unstable state under earthquake and rainstorm plus earthquake conditions. Finally, this paper puts forward the corresponding measures for the dangerous rock mass:clearing the broken rock mass, temporarily closing the road, anchor grouting and active protective mesh combined with the reinforcement method, the construction of water cut ditch and the proposal to incorporate it into the group observation and mass prevention system.
引文
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[2]徐伟,冯文凯,郭少文,等.彝良县大石盘组崩塌机理及防治对策[J].安全与环境工程,2018,7(4):33-40
[3]杨智翔,裴向军,袁进科,等.高陡边坡危岩体孤石的稳定性分析[J].路基工程,2017,2(1):25-29
[4]王波,郭洪,朱术云,等.四川省巴中地区某危岩体特征及稳定性分析[J].地质灾害与环境保护,2016,12(4):56-58
[5]郑光,许强,巨袁臻,等.2017年8月28日贵州纳雍县张家湾镇普洒村崩塌特征与成因机理研究[J].工程地质学报,2018,2(1):223-240
[6]陈芬芬,王亚民.青松岭镇花市村崩塌地质灾害特征及稳定性分析[J].西部资源,2018,7(4):99-100