| 巷道埋深对大断面巷道围岩变形及应力分布规律影响 |
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| 引用本文： | 张波. 巷道埋深对大断面巷道围岩变形及应力分布规律影响[J]. 中州煤炭, 2020, 0(3): 144-147. DOI: 10.19389/j.cnki.1003-0506.2020.03.032 |
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| 作者姓名： | 张波 |
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| 作者单位： | （山西晋城无烟煤矿业集团有限责任公司 寺河煤矿，山西 晋城 048205） |
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| 摘 要： | 针对断面大巷道难以支护、巷道变形严重等特点,采用三轴压缩试验和巴西劈裂试验对巷道围岩力学参数进行测试,利用数值模拟分析了大断面巷道围岩变形及应力分布规律。研究得出,随着巷道埋深的增加,巷道垂直位移越来越大、垂直应力集中系数逐渐减小、垂直应力逐渐向深部延伸、巷道底板泥岩出现软岩的性质,巷道围岩破坏深度和破坏面积也逐渐增加。
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| 关 键 词： | 埋深 大断面 围岩变形 应力分布 应力集中系数 |
Influences of roadway depth on deformation and stress distribution of surrounding rock in large section roadway |
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| Zhang Bo. Influences of roadway depth on deformation and stress distribution of surrounding rock in large section roadway[J]. Zhongzhou Coal, 2020, 0(3): 144-147. DOI: 10.19389/j.cnki.1003-0506.2020.03.032 |
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| Authors: | Zhang Bo |
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| Affiliation: | （Sihe Coal Mine，Shanxi Jincheng Anthracite Coal Mining Group Co.，Ltd.，Jincheng 048205，China） |
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| Abstract: | According to characteristics of large cross-section roadway,such as difficult supporting and serious deformation,the mechanical parameters of roadway surrounding rock were tested by triaxial compression test and Brazilian split test,and the deformation and stress distribution law of large cross-section roadway surrounding rock were analyzed by numerical simulation.The results showed that with the increase of buried depth of roadway,the vertical displacement of roadway was larger and larger,the vertical stress concentration coefficient was gradually reduced,the vertical stress was gradually extended to the depth,the soft rock appeared in the mudstone of roadway floor,and failure depth and area of surrounding rock of roadway were also gradually increased. |
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| Keywords: | buried depth large section surrounding rock deformation stress distribution stress concentration coefficient |
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