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METHOD FOR ESTIMATION OF OUTBURST HAZARD OF FACE PART OF ROCK MASS IN MECHANIZED COAL GETTING

机译:机械采煤工作面壁突出危险性估算方法

摘要

FIELD: mining. SUBSTANCE: subject to measurement is gas volume liberated into working for the ten last minutes of combine operation, and volume of gas liberated for the first ten minutes after completion of operation, and parameter H of outburst hazard is determined. Outburst hazard is estimated by comparison with critical value 0.8. When Hn exceeds 0.8, the state of rock mass is considered safe, and when Hn≅ 0,8 is equal to, or exceeds 0.8, it is considered outburst-prone. EFFECT: higher efficiency. 2 cl, 1 tbl
机译:领域:采矿。实质:在联合运行的最后十分钟释放出的气体量要进行测量,并在完成操作后的前十分钟释放出的气体量,并确定突出危险参数H。通过与临界值0.8进行比较来估计爆发危险。当H n 超过0.8时,岩体状态被认为是安全的;而当H n ≅0,8等于或超过0.8时,则认为岩体突出-容易效果:更高的效率。 2厘升,1汤匙

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