Mine rock mass borehole multi-section type gas extraction method
The invention discloses a mine rock mass borehole multi-section type gas extraction method. The problem that in the prior art, the borehole sealing effect is poor is solved, and the advantages of being good in sealing effect and easy to operate are achieved. According to the scheme, the method compr...
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| creator | WU JILU ZHANG TAO SHI QUANDE LI JINHAI SUN KAI WEI XUNKUO GAO SHOUFENG LI ZHIWEI HAO JIBAO HUO ZHICHAO SONG WENCHENG ZHANG MIN KONG XIANGTANG LIU ZUNLI QI XIRUI DU JIANHUA YUE HAN HOU XIUZHEN ZHANG GUOYU PEI GUANGLI |
| description | The invention discloses a mine rock mass borehole multi-section type gas extraction method. The problem that in the prior art, the borehole sealing effect is poor is solved, and the advantages of being good in sealing effect and easy to operate are achieved. According to the scheme, the method comprises the steps that a mine rock mass drilling multi-section type gas extraction testing probe is adopted, wherein the testing probe comprises at least three first sealing units and a second sealing unit, wherein two first sealing units are arranged at the two ends respectively, the first sealing unit at the head end is connected with a cone head, two adjacent first sealing units between the middle first sealing unit and the first sealing unit at the head end are connected through a collecting pipe, a plurality of second holes with one-way sealing parts are formed in the side wall of the collecting pipe, the second sealing unit is arranged between the first sealing unit at the tail and the middle first sealing unit, |
| format | Patent |
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The problem that in the prior art, the borehole sealing effect is poor is solved, and the advantages of being good in sealing effect and easy to operate are achieved. 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The problem that in the prior art, the borehole sealing effect is poor is solved, and the advantages of being good in sealing effect and easy to operate are achieved. According to the scheme, the method comprises the steps that a mine rock mass drilling multi-section type gas extraction testing probe is adopted, wherein the testing probe comprises at least three first sealing units and a second sealing unit, wherein two first sealing units are arranged at the two ends respectively, the first sealing unit at the head end is connected with a cone head, two adjacent first sealing units between the middle first sealing unit and the first sealing unit at the head end are connected through a collecting pipe, a plurality of second holes with one-way sealing parts are formed in the side wall of the collecting pipe, the second sealing unit is arranged between the first sealing unit at the tail and the middle first sealing unit,</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
| recordid | cdi_epo_espacenet_CN107725101A |
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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 SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS |
| title | Mine rock mass borehole multi-section type gas extraction method |
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