SU991068A1 - Method of evaluating gas-dynamic state of face-adjoining part of coal bed - Google Patents
Method of evaluating gas-dynamic state of face-adjoining part of coal bed Download PDFInfo
- Publication number
- SU991068A1 SU991068A1 SU813284380A SU3284380A SU991068A1 SU 991068 A1 SU991068 A1 SU 991068A1 SU 813284380 A SU813284380 A SU 813284380A SU 3284380 A SU3284380 A SU 3284380A SU 991068 A1 SU991068 A1 SU 991068A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- gas
- dynamic state
- borehole
- sealing
- amount
- Prior art date
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Description
Изобретение относитс к горной промышленности , а именно к безопасному в& дению работ на пластах, подверженных га зодинамическим 5голением, и может быть использовано дл контрол эффективиости противовыбросных меропри тий в очистны и подготовительных забо х. Известен способ оценки газодинамичес кого состошш прнзабойной части угольно го пласта, включающий бурение шпуров, определение начальной скорости газовы- делени и степени пласта 1 . Недостатком способа вл етс отсутст вие возможности опенки состо ни пласта объективно опенить газодинамическое соо то5шие в услови х, когда происходит интенсивное разрушение угольного массива и увеличиваетс скорость газоотдачи в процессе бурени шпуров, в результате чего наблюдаютс выбросы при весьма низких замеренных величинах начальной скорости газовыделени . Наиболее близким к изобретению по технической сущности и получаемому р зультату свл етс способ определени безопасных зон призабойной части выбросоопасного угольного пласта при ведении горных работ, включающий поинтервальнов бурение шпура, герметизацию шпура гндрозатвором , измерение начальной скорооти газовыделени , установление безопаоной зоны разгрузки на рассто нии от груды забо в глубину массива, на котором рост или посто нство скорости газовыдвлени смен ютс ее падением Г 2 Т . Недостатком этого способа вл етс то, что при внедрении в пригруженную зону происходит интенсивное разрушение стенок шпура, увеличение диаметра шпура и более интенсивна газоотдача угольного массива, в результате чего замерить гегзовыделение из шпура в установленное врем (до 3 мин) не удаетс совсем, шш замеренное газовыделение не соответст вует фактическому, что снижает достове1 ность и надежность способй. Целью изобретени 5гол етс повышение : надежности опенки газодинамического сооThe invention relates to the mining industry, namely to the safe & works on seams subject to gas-dynamic 5g, and can be used to control the effectiveness of anti-blowout measures in clean and preparatory holes. There is a method for estimating the gas-dynamic flow of the bottom section of the coal seam, which includes drilling holes, determining the initial gas release rate and the degree of formation 1. The disadvantage of this method is the lack of possibility of formation formation to objectively impart gas dynamic conditions in conditions when intensive destruction of the coal massif occurs and gas recovery rate increases during the drilling of boreholes, as a result of which emissions are observed at very low measured values of the initial outgassing rate. The closest to the invention to the technical essence and the resultant result is the method of determining safe zones of the bottomhole part of an outburst coal seam during mining operations, including interval drilling of the hole, sealing of the hole with an antidust block, measuring the initial gas release rate, establishing a safe discharge zone at a distance from the pile the bottom of the massif, at which the growth or constant velocity of gas emission is replaced by its fall G 2 T. The disadvantage of this method is that when it is inserted into the loaded zone, there is an intensive destruction of the walls of the hole, an increase in the diameter of the hole and more intensive gas recovery of the coal mass, resulting in measuring the release from the hole at the set time (up to 3 minutes) does not work at all, the measured value gas emission does not correspond to the actual, which reduces the reliability and reliability of methods. The aim of the invention is to increase: the reliability of the gas-dynamic gas sensor
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813284380A SU991068A1 (en) | 1981-04-27 | 1981-04-27 | Method of evaluating gas-dynamic state of face-adjoining part of coal bed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813284380A SU991068A1 (en) | 1981-04-27 | 1981-04-27 | Method of evaluating gas-dynamic state of face-adjoining part of coal bed |
Publications (1)
Publication Number | Publication Date |
---|---|
SU991068A1 true SU991068A1 (en) | 1983-01-23 |
Family
ID=20956527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU813284380A SU991068A1 (en) | 1981-04-27 | 1981-04-27 | Method of evaluating gas-dynamic state of face-adjoining part of coal bed |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU991068A1 (en) |
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1981
- 1981-04-27 SU SU813284380A patent/SU991068A1/en active
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