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[1]胡斌,方庆红,李京,等.露采高边坡模型初始地应力场快速生成方法研究*[J].中国安全生产科学技术,2021,17(5):12-18.[doi:10.11731/j.issn.1673-193x.2021.05.002]
　HU Bin,FANG Qinghong,LI Jing,et al.Study on rapid generation method of initial ground stress field in model of high slope with open-pit mining[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(5):12-18.[doi:10.11731/j.issn.1673-193x.2021.05.002]
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露采高边坡模型初始地应力场快速生成方法研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年5期
页码:
12-18
栏目:
学术论著
出版日期:
2021-05-31

文章信息/Info

Title:
Study on rapid generation method of initial ground stress field in model of high slope with open-pit mining
文章编号:
1673-193X(2021)-05-0012-07
作者:
胡斌; 方庆红; 李京; 祝鑫; 杨为
（1.武汉科技大学 资源与环境工程学院，湖北 武汉 430081；
2.冶金矿产资源高效利用与造块湖北省重点实验室，湖北 武汉 430081）
Author(s):
HU Bin;  FANG Qinghong;  LI Jing;  ZHU Xin;  YANG Wei
(1.School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan Hubei 430081,China;
2.Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan Hubei 430081,China)
关键词:
露采高边坡; 初始地应力场; 快速生成; 子模型法; 等效应力梯度边界面力法
Keywords:
high slope with open-pit mining;  initial ground stress field;  rapid generation;  sub-model method;  equivalent stress gradient boundary surface force method
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2021.05.002
文献标志码:
A
摘要:
为防止露釆高边坡建模中初始地应力场畸变，采用子模型法和等效应力梯度边界面力法，用等效应力梯度边界面力替代简化部分水平构造应力，施加侧边界条件。以黄山石灰石矿山高边坡为工程实例，建立取至负地形的高边坡整体计算模型和简化子模型，计算对比整体大模型与简化子模型初始地应力场模拟结果。结果表明：整体大模型与简化子模型水平方向和竖直方向应力误差较小，证明此数值模型简化法可行；以工程边界作为简化子模型侧边界，节点和单元简化率约52%，可快速模拟初始地应力场，提高计算效率。研究结果为高边坡整体大模型初始地应力快速生成提供新思路。
Abstract:
In order to prevent the distortion of initial ground stress field in the modeling and calculation of high slope with open-pit mining,the boundary of model should be taken to the negative topography,which caused the problems that the model volume (area) is too large,the node units are too many,and the calculation efficiency is low.A simplification method of numerical model by using the sub-model method and the equivalent stress gradient boundary surface force method was proposed,and the equivalent stress gradient boundary surface force was used to replace the horizontal tectonic stress in the simplified part,then the lateral boundary conditions were applied.Taking the high slope of Huangshan limestone mine as an example,the overall calculation model and simplified sub-model of high slope with negative topography were established,and the simulation results of initial ground stress field by the overall large model and the simplified sub-model were calculated and compared.The results showed that the stress errors in the horizontal direction and vertical direction between the overall large model and the simplified sub-model was small,which proved that the simplification method of numerical model was feasible.Taking the engineering boundary as the lateral boundary of the simplified sub-model,the simplification rate of nodes and units was nearly 52%.It can quickly simulate the initial ground stress field,improve the calculation efficiency,and provide a new idea for the rapid generation of the initial ground stress in the overall large model of high slope.

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相似文献/References:

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　LI Qiyue,HUANG Wulin,WU Zhengyu,et al.Theoretical study and numerical simulation on rock failure process in cutting by parallel hole under different ground stress conditions[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(5):57.[doi:10.11731/j.issn.1673-193x.2016.11.010]

备注/Memo

备注/Memo:
收稿日期： 2020-08-22
* 基金项目： 国家自然科学基金项目（U1802243，41672317）；湖北省技术创新专项（2017ACA184）
作者简介： 胡斌，博士，教授，主要研究方向为边坡稳定性论证与动态调控。
更新日期/Last Update: 2021-06-03