Mechanical expansion type hole sealing pressure measuring apparatus and pressure measuring method
The invention relates to a gas hole sealing pressure measuring apparatus applied to coal seams and surrounding rocks, and specifically relates to a mechanical expansion type hole sealing pressure measuring apparatus and a pressure measuring method suitable for inclinedly and downwardly drilling hole...
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| creator | ZHOU FENGZENG ZHENG XIAOMIN GUO DA WU JIANGUO GUAN LIANHE ZHANG JIAYONG WANG KAI ZHENG QINGXUE CUI XIAO ZHANG XINSHUANG |
| description | The invention relates to a gas hole sealing pressure measuring apparatus applied to coal seams and surrounding rocks, and specifically relates to a mechanical expansion type hole sealing pressure measuring apparatus and a pressure measuring method suitable for inclinedly and downwardly drilling holes. The mechanical expansion type hole sealing pressure measuring apparatus comprises a piezometer pipe, a grouting pipe and a grouting pump, and also comprises a core pipe, an expansion pipe and a sleeving pipe, the expansion pipe is a part of the sleeving pipe, and the front of the sleeving pipe is provided with a sleeving pipe nut; the core pipe is sleeved with the sleeving pipe, and the front of the core pipe is provided with a core pipe screw; the piezometer pipe penetrates the core pipe and is positioned by a rubber plug; the grouting pipe stretches into the core pipe; the core pipe and the sleeving pipe are respectively provided with flower holes; and an outer end of the sleeving pipe is sleeved with a fixed |
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| language | chi ; eng |
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| subjects | EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS |
| title | Mechanical expansion type hole sealing pressure measuring apparatus and pressure measuring method |
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