摘要
危岩崩塌是一种常见的山区地质灾害,由于失稳机制极其复杂且难以预测,给灾害防治造成了极大困难。为了对桂林翻山危岩进行防护治理,基于离散元模拟法(3DEC)分析了桂林翻山Ⅱ区内危岩的发育特征和破坏情况,选取滑移式危岩和坠落式危岩为目标岩体,对目标岩体在重力和降雨作用下的破坏过程进行模拟并对模拟结果进行分析,结果表明:对岩块体积小的危岩采用静态爆破的方法进行清理,对于体积较大的危岩选用锚杆支护的方法进行加固。
Dangerous rock collapse is a common geological disaster in mountainous areas.As the destabilization mechanism is extremely complex and difficult to predict,it is very difficult to prevent and control disasters.In order to protect and control the dangerous rocks overturned in Guilin,based on the discrete element simulation method(3DEC),the development characteristics and damage conditions of dangerous rocks in area II of overturned mountain in Guilin were analyzed.Slip-type dangerous rocks and falling-type dangerous rocks were selected as target rocks to simulate the failure process of target rocks under gravity and rainfall and to analyze the simulation results.The results show that static blasting is used to clean dangerous rock with small volume and bolt support is used to reinforce dangerous rock with large volume.
作者
刘宝臣
王良玉
曾榕
张研
吴康丽
LIU Bao-chen;WANG Liang-yu;ZENG Rong;ZHANG Yan;WU Kang-li(Guangxi Key Laboratory of New Energy and Building Energy Saving, Guilin 541004, China;College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, China)
出处
《科学技术与工程》
北大核心
2022年第6期2409-2418,共10页
Science Technology and Engineering
基金
国家自然科学基金(52068016)
广西自然科学基金(2020GXNSFAA297118)。
关键词
危岩
离散元
稳定性评价
治理防护
dangerous rock
discrete element
stability evaluation
treatment and protection
