深部高应力软岩动压巷道加固技术研究

›› 2009, Vol. 30 ›› Issue (6): 1693-1698.

深部高应力软岩动压巷道加固技术研究

方新秋^{1, 2}，何杰^{1, 2}，何加省^{1, 2}

1. 中国矿业大学矿业工程学院，徐州 221008；2. 煤炭资源与安全开采国家重点实验室，徐州 221008

收稿日期:2008-05-29 出版日期:2009-06-10 发布日期:2011-03-09
作者简介:方新秋，男，1974年生，博士后，副教授，从事采矿工程方面的科研与教学工作。
基金资助:
国家自然科学基金资助项目（No. 50504014）。

Research on reinforced technology for deep soft rock and dynamic pressurized roadway under high stress

FANG Xin-qiu ^{1, 2}，HE Jie ^{1, 2}，HE Jia-sheng ^{1, 2}

1. School of Mines, China University of Mining and Technology, Xuzhou 221008, China; 2. State Key Laboratory of Coal Resources and Safe Mining, Xuzhou 221008, China

Received:2008-05-29 Online:2009-06-10 Published:2011-03-09

摘要/Abstract

摘要：

为解决深部软岩高应力动压巷道维护的技术难题，针对孔庄矿-620软岩大巷处高应力区、受上方7335水采工作面、8331综采工作面采动以及断层影响的特征，分析其破坏状况和因素，模拟研究了采动影响前后大巷变形规律，掌握大巷应力状态变化规律及影响区域，提出大巷加固思想，优化加固方案，确定了合理加固参数。研究成果表明，采用锚网索喷+锚注联合支护技术，利用新型专利注浆锚杆，对大巷周围2 m范围注浆，能够有效控制大巷变形。进行井下工业性试验，通过注浆前后围岩力学性质对比、实摄及矿压观测手段检测，结果表明-620大巷变形破坏得到了有效的控制。

关键词: 高应力, 软岩, 动压, 锚注

Abstract:

The support for deep soft rock and dynamic pressurized roadway is a major technical challenge. The -620 soft rock roadway in Kongzhuang Mine which is located in the high stress areas is a typical example, and it is affected by No. 7335 hydraulic mining face above, No. 8331 mining face, and the fault as well; the damaged condition and the factors that cause the damage are analyzed. The main roadway deformation rules affected by mining are simulated, the change and the influence area of stress state of main roadway are obtained. The thought of reinforcing main roadway is proposed; the reinforcement is optimized; and the reasonable parameters of reinforcement are determined. The research results indicate that the main roadway deformation can be effectively controlled by adopting the bolt-mesh-anchor-concrete and bolt-grouting combined support technology, which grouts main roadway within a radius of 2 m with a new patent grouting anchor. Through the comparison of the mechanical properties of surrounding rock before and after grouting, live shooting and strata control observation, the underground industrial test shows that the -620 main roadway has been effectively controlled.

Key words: high stress, soft rock, dynamic pressure, bolt-grouting

中图分类号:

TD 353

方新秋，何杰，何加省. 深部高应力软岩动压巷道加固技术研究[J]. , 2009, 30(6): 1693-1698.

FANG Xin-qiu，HE Jie，HE Jia-sheng. Research on reinforced technology for deep soft rock and dynamic pressurized roadway under high stress[J]. , 2009, 30(6): 1693-1698.

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