Simulation of Sidewall Failure in Coal Mine Roadways Using an Extended Continuous Joint Model

被引：0
|
作者：
Hao X.-J. [1 ,2 ,3 ]
Zhao Y.-X. [3 ]
Li Y.-L. [3 ]
Guo Y.-D. [3 ]
Ren B. [4 ]
机构：
[1] State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing
[2] Research Centre of Coal Resources Safe Mining and Clean Utilization, Liaoning Technical University, Liaoning
[3] College of Resources and Safety Engineering, China University of Mining and Technology, Beijing
[4] State Coal Mining National Engineering Technology Research Institute, Anhui
来源：
Journal of Failure Analysis and Prevention | 2018年 / 18卷 / 1期
基金：
中国国家自然科学基金;
关键词：
Coal mine; Joint spacing; Jointed coal tunnel; Tunnel stability; Ubiquitous joint model;
D O I：
10.1007/s11668-017-0371-7
中图分类号：
学科分类号：
摘要：
Coal is well developed with beddings, and the beddings play an important role in the stability of tunnel stability of coal mine. This study focused on jointed rock mass with two sets of joint and proposed an extended ubiquitous model and associated numerical implementation accounting for joint spacing to represent geometric features of coal. The failure criteria of two sets of joint proposed in this paper not only accounted for joint spacing, but also contained the ubiquitous joint model. This extended theory was validated against the discontinuous deformation analysis method, the plane of weakness theory and experimental results for jointed coal with different joint fabric. The model is also used to analyze tunnel stability of roadways in coal mine with different joint spacing. The ubiquitous joint model could simulate jointed coal with small joint spacing, but for that with larger joint spacing, the ubiquitous joint model is not applicable and the joint model containing joint spacing proposed by this paper should be used. A series of comparisons demonstrated that the proposed model was capable of considering the influence of joint spacing on jointed coal tunnel with two sets of joint. © 2017, ASM International.
引用
收藏
页码：41 / 49
页数：8
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