| 深井跨采巷道围岩应力分布及变形规律模拟研究 |
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| 引用本文： | 汤雪唯,张向阳.深井跨采巷道围岩应力分布及变形规律模拟研究[J].煤炭技术,2010,29(3). |
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| 作者姓名： | 汤雪唯 张向阳 |
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| 作者单位： | 1. 安徽理工大学,能源与安全学院,安徽,淮南,232001
2. 安徽理工大学,能源与安全学院,安徽,淮南,232001;煤矿安全高效开采省部共建教育部重点实验室,安徽,淮南,232001 |
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| 基金项目： | 中国矿业大学煤炭资源与安全开采国家重点实验室开放基金资助项目(08KF03) |
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| 摘 要： | 基于煤矿跨采过程中存在的工作面矿压显现加剧、巷道围岩难于控制等现实问题,结合具体工程条件,应用FLAC数值模拟软件对上方工作面开采过程中的巷道围岩应力分布特点及围岩变形移动规律进行了模拟研究,得出了工作面前方移动支承压力在底板的传播引起底板岩层处于应力升高区,位于该区内的底板巷道,随着工作面的推进,巷道依次处于原岩应力区、应力升高区、卸压区和卸压稳定区,且在工作面距离跨采巷道前后50 m范围内,应力集中程度较强。在跨采期间,巷道的主要变形发生在工作面跨巷道的时间段,2帮应力集中程度强于顶底板,并引起巷道一定程度的变形。
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| 关 键 词： | 跨采巷道 围岩应力 变形规律 数值模拟 |
Simulation Study of Stress Distribution and Deformation of Surrounding Rock During Overhead-mining |
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| T, Xue-wei,ZHANG Xiang-yang.Simulation Study of Stress Distribution and Deformation of Surrounding Rock During Overhead-mining[J].Coal Technology,2010,29(3). |
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| Authors: | T Xue-wei ZHANG Xiang-yang |
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| Affiliation: | 1.School of Energy and Safety/a>;Anhui University of Science and Technology/a>;Huainan 232001/a>;China/a>;2.The Key Lab of Safe and High-efficiency Mining of Ministry of Education/a>;China |
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| Abstract: | Based on the coal mining practical problems such as mining pressure behavior picking up,difficult to control roadway surrounding rock.Combining with the specific project conditions,using the FLAC numerical simulation software simulates the stress distribution and the deformation characteristics of surrounding rock.It is shown that the spread mobile supporting pressure in the floor causes the roadway to locate the high stress area in the rock floor.With the working face advancing,roadway followed by the dist... |
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| Keywords: | crossover heading surrounding rock stress deformation law numerical simulation |
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