煤炭工程 ›› 2014, Vol. 46 ›› Issue (4): 71-73.doi: 10.11799/ce201404025
• 研究探讨 • 上一篇 下一篇
田坤云
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摘要：
作为最有效的区域防突措施，某矿进行了保护层开采的实践，通过对煤层瓦斯压力、瓦斯含量、透气性系数的变化，考察了上保护层开采后对被保护层的保护效果，保护层开采前后各考察指标变化表明保护效果良好。针对在上保护层开采过程中底板煤岩体裂隙分布研究较少的情况，通过数值试验模拟，得到上保护层开采后底板裂隙带分布，分为底板变形破坏带和底板塑性变形带，同时划分了“上三带”各带高度。
关键词: 保护层, 保护效果, 数值模拟, 裂隙分布
Abstract:
Regional outburst prevention measures as the most effective, a mine protective layer mining practice, investigated the protective effect of the protective layer on the protected layer after mining coal seam gas pressure, gas content, permeability coefficient changes to protectlayer mining before and after the changes in the indexes show that the protective effect. Less backplane coal rock fracture distribution studies on the protective layer mining process, through numerical experiments simulation on the protection layer mining backplane fissures with distribution, divided into the floor deformation and failure with plastic deformation and bottom plate with the same time divided "upper three bands" each band height.
Key words: protevtive layer, protection effect, numerical simulation, fracture banded distribution.
田坤云. 上保护层开采的保护效果及裂隙带分析[J]. 煤炭工程, 2014, 46(4): 71-73.
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