摘要
淮南矿区深部矿井不同瓦斯地质单元在掘进过程中出现明显动力现象预兆,为了有效预测及防治深部矿井复杂地质条件下煤巷掘进过程中煤与瓦斯突出事故,采用了实验室分析和现场试验相结合的多种研究手段,获得了试验区不同地质条件下的敏感指标临界值,正常地质条件:S0=7kg/m,K10=0.7 mL/(g.min1/2);异常地质条件:S0=6 kg/m,K10=0.5 mL/(g.min1/2)。结果表明,确定的指标及其临界值合理有效,使得试验区月掘进速度由62 m提高到124 m,指导试验区安全掘进3 000 m。
The different gas geological element in the deep mine of Huainan Mining Area had a foretaste of an obvious dynamic phenomenon in the seam gateway heading.In order to effectively predict and control the coal and gas outburst accident occurred in the seam gateway heading under the complicated geological conditions in the deep mine,several study means in combined with the lab analysis and the site test were applied.The sensitive index and its critical value under the different geological conditions in the test...
出处
《煤炭科学技术》
CAS
北大核心
2009年第3期26-29,33,共5页
Coal Science and Technology
基金
国家重点基础研究发展计划(973计划)资助项目(2005CB221503)
关键词
深井
敏感指标
复杂地质条件
deep mine
sensitive index
complicated geological conditions
