Technique and experiment of active direct gas pressure measurement in coal roadway
| العنوان: | Technique and experiment of active direct gas pressure measurement in coal roadway |
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| المؤلفون: | Shang-quan Ma, Li-ming Qi, Xue-xi Chen |
| المصدر: | Journal of Coal Science and Engineering (China). 15:210-214 |
| بيانات النشر: | Springer Science and Business Media LLC, 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | Engineering, Petroleum engineering, business.industry, Fissure, Process (computing), Borehole, Coal mining, Energy Engineering and Power Technology, Drilling, Geotechnical Engineering and Engineering Geology, medicine.anatomical_structure, Gas pressure, Active measurement, medicine, Coal, business |
| الوصف: | An active measurement method and its principle was introduced considering the low success rate, special difficulty, and long measurement time of the direct gas pressure measurement currently used in coal roadways. The technology of drilling, borehole sealing depth, borehole sealing length, sealing control of the measuring process, compensatory computation of gas loss quantity and other key techniques were discussed. Finally, based on the latest instrument the authors developed, a series of experiments of direct gas pressure measurement in the coal roadways of the Jincheng and Tongchuan mine district, were carried out. The experimental results show that active gas pressure measurement technique has advantages as follows: (1) the application scope of direct gas pressure measurement technique is wide and it does not have the restriction of coal hardness, coal seam fissure and other conditions; (2) the measured results are credible, which can be tested by the same gas pressure value acquired from a different borehole in the same place; (3) the measurement process is convenient and quick, it takes about 2 to 3 days to acquire the gas pressure value in a coal seam. |
| تدمد: | 1866-6566 1006-9097 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::89e030d200279a0c2e6c31176b3b6dbfTest https://doi.org/10.1007/s12404-009-0219-1Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........89e030d200279a0c2e6c31176b3b6dbf |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18666566 10069097 |
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