Recognition and prevention of rockfall vulnerable area in open-pit mines based on slope stability analysis

IF 2.5 3区 工程技术 Q2 ENGINEERING, CIVIL
Chun Zhu, M. He, T. Zhigang, Qingxiang Meng, Xiaohu Zhang
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引用次数: 5

Abstract

Because of a wide distribution range, sudden occurrence, and high frequency of rockfall disasters on the slope of open-pit mines, it is difficult to effectively control the rockfall disasters in open-pit mines. The slope stabilities of slopes of 13 typical sections in the Changshanhao open-pit mine were calculated using 3DEC software, and the vulnerable area of each slope section was determined. These areas were analyzed as high-incidence areas of rockfalls. Combined with the field geological conditions, the slopes of the W6 and W8 sections where rockfall disasters easily occur were selected to study the motion characteristics of rockfalls, including the trajectory, landing distribution, bouncing height, and total kinetic energy using Rocfall software. According to different distribution characteristics of high-incidence areas of rockfall disasters on a slope, the gravel cushion and protective net methods are proposed to control rockfall disasters. The effectiveness and reasonableness of prevention methods were validated using numerical simulation, proving a good basis for scientific prevention and control of rockfall disasters in open-pit mines.
基于边坡稳定性分析的露天矿岩崩易损区识别与防治
露天矿边坡岩崩灾害分布范围广、突发性强、发生频率高,难以有效控制露天矿边坡岩崩灾害。利用3DEC软件对长山好露天矿13个典型断面边坡进行了稳定性计算,确定了各断面边坡的脆弱区。这些地区被分析为岩崩高发区。结合现场地质条件,选取易发生岩崩灾害的W6、W8断面边坡,利用Rocfall软件研究岩崩运动特征,包括岩崩运动轨迹、落点分布、弹跳高度、总动能等。根据边坡岩崩灾害高发区的不同分布特点,提出了砾石垫层和防护网法防治岩崩灾害。通过数值模拟验证了防治方法的有效性和合理性,为科学防治露天矿岩崩灾害提供了良好的依据。
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来源期刊
Geomechanics and Engineering
Geomechanics and Engineering ENGINEERING, CIVIL-ENGINEERING, GEOLOGICAL
CiteScore
5.20
自引率
25.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: The Geomechanics and Engineering aims at opening an easy access to the valuable source of information and providing an excellent publication channel for the global community of researchers in the geomechanics and its applications. Typical subjects covered by the journal include: - Analytical, computational, and experimental multiscale and interaction mechanics- Computational and Theoretical Geomechnics- Foundations- Tunneling- Earth Structures- Site Characterization- Soil-Structure Interactions
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