| 宜兴煤矿安全经济护巷煤柱宽度的研究确定 |
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| 引用本文： | 袁和勇,何启林,袁和旭. 宜兴煤矿安全经济护巷煤柱宽度的研究确定[J]. 中国安全生产科学技术, 2013, 9(9): 54-58 |
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| 作者姓名： | 袁和勇 何启林 袁和旭 |
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| 作者单位： | 1. 安徽理工大学能源与安全学院,安徽淮南232001;安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001
2. 安徽省交通勘察设计院有限公司,安徽合肥,230000 |
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| 摘 要： | 为节省资源,留最窄护巷煤柱,在借用FLAC3D模拟软件掌握不同护巷煤柱宽度下巷道围岩应力应变后,结合模拟的结果和实验室试验新材料GRT-201加固后的煤岩体强度指标,最终确定煤柱留设宽度为2m,较正常煤柱宽度留设减小了20多米.现场操作后巷道的变形率控制在5％以内,大大降低留设煤柱宽度的同时保证了工作面的正常接替和安全回采.
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| 关 键 词： | 小煤柱护巷 护巷煤柱宽度 FLAC3D 固瑞特GRT-201 |
Determination on safe and economic midth of chain pillar in Yixing coal mine |
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| YUAN He-yong , HE Qi-lin , YUAN He-xu. Determination on safe and economic midth of chain pillar in Yixing coal mine[J]. Journal of Safety Science and Technology, 2013, 9(9): 54-58 |
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| Authors: | YUAN He-yong HE Qi-lin YUAN He-xu |
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| Affiliation: | 3 (1. School of Energy and Safety, Anhui University of Science and Technology, Huainan Anhui 232001, China; 2. Key Laboratory of Safe and Effective Coal Mining of Education Ministry Jointly Funded by Anhui Province and Education Ministry of China,Huainan Anhui 232001, China;3. Anhui Province Traffic Survey and Design Institute co. , LTD, Hefei Anhui 230000, China) |
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| Abstract: | In order to save resources and keep the minimum width of chain pillar, FLAC3Dsimulation software was applied to master the stress and strain of roadway surrounding rock under different width of chain pillar. Combining with the results of simulation and laboratory test on the rock mass strength index after reinforcement, by new materi- al of GRT - 201 the coal pillar width was finally determined to be 2 m, which reduced more than 20 meters com- pared with the normal width of coal pillar design. The roadway deformation rate after on-site operation was con- trolled to be less than 5% , which greatly reduces the coal piller midth, at the same time ensures the normal re- placement and safety mining of the working face. |
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| Keywords: | small coal pillar roadway protection width of chain pillars FLAC3D GRT-201 |
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