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| 松散表土薄基岩浅埋煤层矿压显现规律数值分析 | |
| 引用本文： | 田建胜,王建利,王水利,方新秋,高海亮.松散表土薄基岩浅埋煤层矿压显现规律数值分析[J].煤炭科学技术,2011,39(10):22-25,28. |
| 作者姓名： | 田建胜 王建利 王水利 方新秋 高海亮 |
| 作者单位： | 1. 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州,221008 2. 陕西汇森煤业开发有限责任公司,陕西西安,710000 3. 中国矿业大学矿业工程学院,江苏徐州,221008 |
| 摘 要： | 为了分析松散表土薄基岩浅埋煤层首采工作面上覆岩层的运动规律,尤其是顶板初次来压和周期来压步距,运用UDEC软件对神木汇森凉水井煤矿首采面上覆岩层矿压显现规律进行了数值模拟,在此基础上进行了现场实测。结果表明,首采面初次来压步距的计算值为40.0 m,实测值32.8 m;周期来压步距的计算值为20 m,实测周期来压步距为16.5～22.0 m,平均为19.5 m;强制放顶距为20 m时能减小初次来压强度;强制放顶能有效地削弱和减小顶板初次来压的强度和规模,保证强制放顶效果的关键是提高强制放顶爆破作业的质量。 |
| 关 键 词： | 浅埋煤层 放顶距 初次来压步距 周期来压步距 数值模拟 |
Analysis on Numerical Simulation of Mine Strata Behavior Law in Shallow Depth Seam with Bulk Overbarden Soil and Thin Bedrock Overburden |
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| TIAN Jian-sheng,WANG Jian-li,WANG Shui-li,FANG Xin-qiu,GAO Hai-liang.Analysis on Numerical Simulation of Mine Strata Behavior Law in Shallow Depth Seam with Bulk Overbarden Soil and Thin Bedrock Overburden[J].Coal Science and Technology,2011,39(10):22-25,28. | |
| Authors: | TIAN Jian-sheng WANG Jian-li WANG Shui-li FANG Xin-qiu GAO Hai-liang |
| Affiliation: | TIAN Jian-sheng1,WANG Jian-li2,WANG Shui-li2,FANG Xin-qiu3,GAO Hai-liang1 |
| Abstract: | In order to analyze the movement law of the strata above the first coal mining face in the seam with a shallow depth of bulk overburden soil and thin base bedrock,especially to analyze the roof initial pressurized and periodical pressurized distance to the UDEC software was applied to numerically simulate the pressure behavior law of the roof strata above the first coal mining face in Shenmu Huisen Liangshuijing Mine.Based on the circumstance,a site measurement was conducted.The results showed that the calc... |
| Keywords: | shallow seam roof caving distance roof initial pressurized distance roof periodical pressurized distance numerical simulation |
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