The paper presents some information about gas and coal outbursts threat in Polish coal mines.It shows the methodology for threat identification and monitoring for gas and coal outbursts in the Polish coal mines.One of...The paper presents some information about gas and coal outbursts threat in Polish coal mines.It shows the methodology for threat identification and monitoring for gas and coal outbursts in the Polish coal mines.One of the main methods of assessing threats in the mining industry in Poland and China is desorbometric method.The paper presents some results of estimation of uncertainties of the desorption rate Δp,determined in situ,by use of liquid manometric desorbometer gauge.It was observed that,if there are coal subgrains in desorbometer contaminator,the results of desorption rate may be even up to 60% higher than results obtained for the normative sample.Possibly method of the uncertainty reduction are presented in the paper as well.展开更多
Most outbursts of gas and coal occur along geological structural zones during mining. Recent research revealed that most outbursts occurred on the downthrow sides of faults, and the key reason is that the outburst coa...Most outbursts of gas and coal occur along geological structural zones during mining. Recent research revealed that most outbursts occurred on the downthrow sides of faults, and the key reason is that the outburst coal,often known as tectonic coal or soft coal, mainly exists on the downthrow wall of faults-hanging of normal faults or footwall of reverse faults. This paper will mainly discuss the outburst prone on different sides of faults and its causes.展开更多
基金supported by a Grant from the Ministry of Science and Higher Education of Poland(NR09-0038-06,Poland)
文摘The paper presents some information about gas and coal outbursts threat in Polish coal mines.It shows the methodology for threat identification and monitoring for gas and coal outbursts in the Polish coal mines.One of the main methods of assessing threats in the mining industry in Poland and China is desorbometric method.The paper presents some results of estimation of uncertainties of the desorption rate Δp,determined in situ,by use of liquid manometric desorbometer gauge.It was observed that,if there are coal subgrains in desorbometer contaminator,the results of desorption rate may be even up to 60% higher than results obtained for the normative sample.Possibly method of the uncertainty reduction are presented in the paper as well.
文摘Most outbursts of gas and coal occur along geological structural zones during mining. Recent research revealed that most outbursts occurred on the downthrow sides of faults, and the key reason is that the outburst coal,often known as tectonic coal or soft coal, mainly exists on the downthrow wall of faults-hanging of normal faults or footwall of reverse faults. This paper will mainly discuss the outburst prone on different sides of faults and its causes.
