Technology for rapidly constructing air shaft under chill condition and process for sinking vertical shaft pit shaft
A conditional, cold technology, applied in wellbore lining, wellbore/well components, well sinking, etc., can solve problems such as ventilation and gas problems that cannot be fundamentally solved
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[0004] The embodiment that the present invention solves its technical problem to take is:
[0005] 1. There are 28 freezing holes, 3 construction temperature measuring holes and 1 hydrological observation hole, and a total of 32 drilling holes with a depth of 115m and a total construction volume of 3540m. Two DZJ500-1000 drilling rigs are used for construction, and the JDT-5 gyro inclinometer is used for orientation, and the eccentric deflector is used for deflection.
[0006] The freezing station is mainly equipped with 3 YSLG20F Freon screw refrigeration units, two of which are running and one is in standby. 2 10SH-9 brine pumps, one running and one standby, 2 12SH-9A cooling water circulation pumps, one running and one standby, 2 NBL-250 cooling towers and other equipment, used for the flow of brine in the main pipe Electromagnetic flowmeter monitoring, single-hole brine flow is measured by a special measurement circuit, and a temperature measuring port is reserved at the ...
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