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2011 Issue 02

Exploration of Gas Geological Abnormal Based on Gas Drainage Borehole


Key Words:

coal and gas outburst;gas drainage;hidden fault;production geology exploration;gas geology;
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Based on the importance of the explored geological abnormal to the seam gas balance drainage and extraction and to the coal and gas outburst danger elimination, with certain cases, the paper pointed out the necessity and feasibility of the gas drainage borehole applied to the production geological exploration.The pap er provided that the application of the single rod drilling cutting quantity, rock cutting properties, gas parameter variation law and other gas geological information from t he gas drainage borehole could on timely find the abnormal and conduct the gas geological prediction method.The paper stated the seam roof and floor controlled bore holes with a layout from sparse to dense, even arrangement and priority construction, the well construction records, the gas drainage borehole design and construction principle.The analysis showed that the comprehensive application of the gas drainage borehole to conduct the detail exploration of the gas geological abnormal could b e a feasible gas disaster prevention and control technology in China.
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June 15th,2022

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