盐亭县崩塌稳定性分析与防治
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摘要
对盐亭县危岩带进行现场地质调查,在此基础上对四处典型危岩体特征进行分析,采用赤平投影法、稳定性计算、坠落轨迹及冲击能计算对危岩体的稳定性进行评估。结果表明:(1)四处危岩体在天然和暴雨工况下均处于不稳定或欠稳定状态;(2)W1、W2、W3三处危岩体的水平崩落距离和末动能较大,对附近居民和公共设施安全造成威胁,有必要采取防治措施;(3)根据现场调查和计算分析,对4处危岩体采取针对性整治措施。
Based on the field geological survey of yanting dangerous rock belt, the characteristics of four typical dangerous rock masses were analyzed, and the stability of dangerous rock masses was evaluated by the methods of plane projection, stability calculation, falling trajectory and impact energy analysis. The results show that:(1) the four dangerous rock masses are in an unstable or under stable state under natural and rainstorm conditions;(2) the horizontal caving distance and final kinetic energy of the three dangerous rock masses W1, W2 and W3 are large, which pose a threat to the safety of nearby residents and public facilities, so it is necessary to take preventive measures;(3) according to field investigation and calculation and analysis, targeted remedial measures should be taken for four dangerous rock masses.
Based on the field geological survey of yanting dangerous rock belt, the characteristics of four typical dangerous rock masses were analyzed, and the stability of dangerous rock masses was evaluated by the methods of plane projection, stability calculation, falling trajectory and impact energy analysis. The results show that:(1) the four dangerous rock masses are in an unstable or under stable state under natural and rainstorm conditions;(2) the horizontal caving distance and final kinetic energy of the three dangerous rock masses W1, W2 and W3 are large, which pose a threat to the safety of nearby residents and public facilities, so it is necessary to take preventive measures;(3) according to field investigation and calculation and analysis, targeted remedial measures should be taken for four dangerous rock masses.
引文
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[3] 何潇,赵鹏,杜春兰,等.基于PFC2D数值模拟座滑危岩破坏过程研究[J].自然灾害学报,2016,25(06):167-173.
[4] 薛新华,樊旭,郭志元,等.地震荷载作用下倾倒式危岩体动力失稳机理研究[J].沈阳建筑大学学报(自然科学版),2017,33(02):259-265.
[5] 张一,卞玉梅,郭佳,等.开源谢家沟崩塌稳定性与防治[J].地质灾害与环境保护,2014,25(01):28-30.
[6] 田野.某山区锣锅山危岩体成因、破坏模式及稳定性分析[J].资源环境与工程,2016,30(04):662-627.
[7] 李强,余会明,侯谦儒.新疆阿勒泰骆驼峰崩塌稳定性计算[J].西部探矿工程,2011,23(01):115-117+120.