曹家源, 马凤山, 郭捷, 卢蓉, 刘国伟. 2017: 露天开挖条件下顺倾断层倾倒变形特征. 工程地质学报, 25(s1): 248-252. DOI: 10.13544/j.cnki.jeg.2017.s1.040
    引用本文: 曹家源, 马凤山, 郭捷, 卢蓉, 刘国伟. 2017: 露天开挖条件下顺倾断层倾倒变形特征. 工程地质学报, 25(s1): 248-252. DOI: 10.13544/j.cnki.jeg.2017.s1.040
    CAO Jiayuan, MA Fengshan, GUO Jie, LU Rong, LIU Guowei. 2017: CHARACTERISTICS AND MECHANISM STUDY OF CONSEQUMENT FAULT TOPPLING UNDER THE OPEN-PIT MINING CONDITION. JOURNAL OF ENGINEERING GEOLOGY, 25(s1): 248-252. DOI: 10.13544/j.cnki.jeg.2017.s1.040
    Citation: CAO Jiayuan, MA Fengshan, GUO Jie, LU Rong, LIU Guowei. 2017: CHARACTERISTICS AND MECHANISM STUDY OF CONSEQUMENT FAULT TOPPLING UNDER THE OPEN-PIT MINING CONDITION. JOURNAL OF ENGINEERING GEOLOGY, 25(s1): 248-252. DOI: 10.13544/j.cnki.jeg.2017.s1.040

    露天开挖条件下顺倾断层倾倒变形特征

    CHARACTERISTICS AND MECHANISM STUDY OF CONSEQUMENT FAULT TOPPLING UNDER THE OPEN-PIT MINING CONDITION

    • 摘要: 岩质边坡倾倒变形大都具有反倾结构,反向边坡其典型的结构特征为岩层层面与边坡面走向一致但倾向相反,如果同时存在一组或多组顺坡向的节理将岩层切割成离散的块体,则容易发生与以往不同的倾倒破坏。本文借助于软材料小模型,结合了龙首矿区工程地质条件,对自重体积力作用下露天开挖引起这种复杂的倾倒变形现象作了一项实验研究。结果表明,断层的存在,破坏了岩体的连续性,也使岩体的柔度大大提高,大大降低了岩体的变形模量。这种大幅度的变形使得位于压缩区的顺倾断层受到很大的侧向力,当侧向力大于与断层岩体自重在侧向力方向上的体力分量时,就会发生大角度反转倾倒变形。

       

      Abstract: The toppling of the rock slope most have anti dip layered structure, the typical structural feature of the reversal incline slope is that the rock layer and the slope surface are coincident with the strike and but they have opposite dip. It's more likely to happen with different toppling failure if there are one or more sets of joints whose strike is the same as the slope cut the rock into discrete blocks. This paper combined the engineering geological condition of Longshou Mine and used the soft material small model to study the toppling caused by the open-pit mining at its body force condition of self-weight. The results show that the existence of fault destroyed the continuity of the rock mass, increased flexibility of rock mass and significantly reduces the deformation modulus of rock mass. The consequent fault located in the compression zone gets a lot of lateral force owing to the large deformation, and when the lateral force is greater than the physical component of the fault rock mass self-weight in the direction of the lateral force, it will toppling with wide-angle and reversal.

       

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