| 深部岩巷穿越“煤-石灰岩”岩层钻爆技术研究 |
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| 引用本文： | 李达昌,杨双锁,孙龙华,苏鑫.深部岩巷穿越“煤-石灰岩”岩层钻爆技术研究[J].金属矿山,2014,43(1):9-12. |
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| 作者姓名： | 李达昌 杨双锁 孙龙华 苏鑫 |
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| 作者单位： | 太原理工大学矿业工程学院，山西 太原 030024 |
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| 基金项目： | 国家自然科学基金项目（编号：51274145）。 |
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| 摘 要： | 结合阳煤五矿皮带运输巷的实际情况,针对遇到的"煤-石灰岩"组合断面巷道,提出新的爆破方案。通过对掏槽形式的数值模拟,分析其爆炸能量的传递,提出了双楔形掏槽;以光面爆破为基础,对巷道不同层位的周边眼及辅助眼进行优化;现场观测方面,采用了爆破振动测试技术和现场直观测量。最终确定了"双楔形掏槽+合理调整周边眼及辅助眼"的爆破方案,炮眼利用率可达90%左右,有效地提高了进尺,保证了岩巷高速高效掘进。
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| 关 键 词： | 组合岩层 数值模拟 双楔形掏槽 光面爆破 |
Research of Drilling and Blasting Technology for Deep Rock Roadway Across “Coal-limestone” Stratum |
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| Li Dachang,Yang Shuangsuo,Sun Longhua,Su Xin.Research of Drilling and Blasting Technology for Deep Rock Roadway Across “Coal-limestone” Stratum[J].Metal Mine,2014,43(1):9-12. |
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| Authors: | Li Dachang Yang Shuangsuo Sun Longhua Su Xin |
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| Affiliation: | College of Mining Technology，Taiyuan University of Technology，Taiyuan 030024,China; |
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| Abstract: | Combined with the actual situation of belt conveyer roadway in Yangmei No.five coal mine，a new blasting scheme is proposed for “coal-limestone” composite stratum.Through numerical simulation on the undercutting mode，the blasting energy's transmit is analyzed，and the “double-wedge” cut is put forward.Based on the smooth blasting，periphery hole and satellite hole for different rock stratum in gateway are optimized.At scene observation，the paper adopts blasting vibration testing technique and on-site intuitive measurement.The blasting scheme with the double-wedge cut and the reasonably adjusting periphery hole and satellite hole is determined as final proposal with the shot hole rate of up to about 90%.This scheme effectively improves the footage and ensures the high-speed and efficient drifting of rock roadway. |
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| Keywords: | Composite stratum Numerical simulation Double-wedge cut Smooth blasting |
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