ZHOU Sheng-guo, HE Qi-lin. Gas Extraction Technology of Double Horizon High Location Drilling at Fully Mechanized Caving Face[J]. Safety in Coal Mines, 2013, 44(4): 78-80.
Citation:
ZHOU Sheng-guo, HE Qi-lin. Gas Extraction Technology of Double Horizon High Location Drilling at Fully Mechanized Caving Face[J]. Safety in Coal Mines, 2013, 44(4): 78-80.
ZHOU Sheng-guo, HE Qi-lin. Gas Extraction Technology of Double Horizon High Location Drilling at Fully Mechanized Caving Face[J]. Safety in Coal Mines, 2013, 44(4): 78-80.
Citation:
ZHOU Sheng-guo, HE Qi-lin. Gas Extraction Technology of Double Horizon High Location Drilling at Fully Mechanized Caving Face[J]. Safety in Coal Mines, 2013, 44(4): 78-80.
Gas Extraction Technology of Double Horizon High Location Drilling at Fully Mechanized Caving Face
Based on the analysis of gas source and the height of caving zone and fractured zone at No .1511 fully mechanized caving face of Zhengzhu Coal Industry, the high and low double horizon drillings for gas extraction is adopted. Finally, extraction results are examined and analyzed.
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