| 李川,张明.深井上下山煤柱区巷道围岩响应特征数值模拟及其灾害控制[J].矿产勘查,2018,9(11):2246-2249 |
| 深井上下山煤柱区巷道围岩响应特征数值模拟及其灾害控制 |
| Numerical simulation and disaster control of the response features of roadway surrounding rocks in uphill and downhill protection coal pillar area of deep mine |
| 投稿时间：2018-05-14 |
| DOI： |
| 中文关键词: 深井 上下山煤柱区 数值模拟 冲击矿压 矿震 |
| 英文关键词: deep mine,uphill and downhill protection coal pillar area,numerical simulation,rock-burst,mine tremor |
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| 中文摘要: |
| 深井上下山煤柱区巷道围岩应力高度集中,矿压显现剧烈,是煤矿动力灾害多发区。文章通过FLAC2D数值模拟及微震监测等对深井上下山煤柱区巷道围岩响应特征进行研究。结果表明:随着7、9煤层两侧工作面的开采,上下山巷道围岩应力、位移、塑性区分布等响应特征均不断增加,且上升趋势越明显,越易发生冲击破坏；针对不同的开采阶段及矿压显现,提出针对性的煤柱区动力灾害控制措施。研究成果为深井煤岩动力灾害防治提供借鉴和指导。 |
| 英文摘要: |
| Uphill and downhill protection coal pillar area is the multiple zones of coal mine dynamic disasters,where high stress of roadway surrounding rock concentrates seriously and rock burst behaviors violently. The paper explored response features of roadway surrounding rocks in uphill and downhill protection coal pillar area by FLAC2D numerical simulation software and microseismic monitoring system. The results indicated that the response features of roadway surrounding rocks including stress and displacement and plastic area in uphill and downhill roadway all continuously increase asmining of seven and nine coal seams, and the upward trend is more and more obvious so that the occurrence of rock-burst is easier. The targeted control measures of rock-burst are proposed based on different ming states and strata behaviors. The study conclusions provide reference and guidance for preventing coal or rock dynamical disasters in deep mine. |
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