摘要
本文根据岩体力学与采场覆岩移动原理,探讨了煤层原始瓦斯压力、采场开采技术参数、覆岩岩性、煤层倾角等对上邻近层残存瓦斯压力的影响。指出了采场覆岩法向裂缝宽度是影响上邻近层残存瓦斯压力的关键因素,推导出了能够反映上述影响的上邻近层残存瓦斯压力计算公式。经过实际应用证明比已有的其它公式理论性强、精度高。据此还可以计算上邻近层瓦斯涌出量、可抽放瓦斯量及考察解放层的解放效果等。
On the basis of rock mechanics and principle of the movement of overlying strata in longwall face, this paper discusses the influences of the original gas pressure, mining technical parameters, dip angle of coal seams and the features of overlying seams on the residual gas in overlying adjacent seams. It shows that the width of normal fractures of overlying strata is the key factor influencing the residual gas pressure. Relevant formulas for calculating the residual gas pressure in overlying adjacent seams have been derived. It is proved that the formulas are more accurate than that now available in practice and they can be used for calculating the gas emission and gas drainage from the overlying adjacent seams, and checking the effect of the 'release seam'.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
1993年第3期100-107,共8页
Journal of China University of Mining & Technology
关键词
残存瓦斯压力
瓦斯涌出
煤矿开采
adjacent seams, normal fracture, residual gas pressure, gas emission
