| 巷道支护力作用及影响因素分析 |
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| 引用本文： | 王同旭,麻洪蕊. 巷道支护力作用及影响因素分析[J]. 山东科技大学学报(自然科学版), 2009, 28(4): 40-42 |
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| 作者姓名： | 王同旭 麻洪蕊 |
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| 作者单位： | 山东科技大学,矿山灾害预防控制教育部重点实验室,山东,青岛,266510 |
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| 基金项目： | 山东省"泰山学者"建设工程专项经费，国家"十一五"科技支撑计划 |
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| 摘 要： | 采用库伦-莫尔理论，对巷道圃岩出现塑性区前后支护力与圆岩应力之间的关系，以及不同塑性区力学参数下支护力与巷道围岩塑性区半径之间的关系进行了研究。结果表明，由于巷道实际支护力与原岩应力比值只有1／10～1／100，对不出现塑性区和破裂区的完整岩体巷道，支护力的作用是很小的，可以忽略不计。而当围岩中出现了塑性区和破裂区之后，支护力的作用才开始显现。提高支护力可直接减小圃岩破裂区（塑性区）范围，但提高支护力的主要作用是提高弹塑性区围岩压应力，达到提高破裂区（塑性区）岩体宏观强度的目的，从而减小塑性区和破裂区的范围。影响支护力作用效果的主要因素是塑性区力学参数。
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| 关 键 词： | 支护力 巷道 围岩应力 塑性区半径 |
The Effect of Roadway Supporting Forces and Analysis of Its Influence Factors |
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| WANG Tong-xu,MA Hong-rui. The Effect of Roadway Supporting Forces and Analysis of Its Influence Factors[J]. Journal of Shandong Univ of Sci and Technol: Nat Sci, 2009, 28(4): 40-42 |
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| Authors: | WANG Tong-xu MA Hong-rui |
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| Affiliation: | Key Laboratory of Mining Disaster Prevention and Control;Ministry of Education;SUST;Qingdao;Shandong 266510;China |
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| Abstract: | With the Mohr-Coulomb criterion,the relationship between the roadway supporting force and the stress of surrounding rock,and the relationship between the roadway supporting force and the radius of plastic zone with different rock mechanical parameters were analyzed before and after the emergence of the plastic zone in surrounding rock.The studies show that when the surrounding rock has not been damaged,the effect of supporting force is slight,even can be neglected because the actual supporting force is only... |
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| Keywords: | supporting force roadway stress of surrounding rock radius of plastic zone |
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