Mechanical rock-breaking drilling process of vertical shaft heading machine in broken stratum

Abstract

The invention discloses a mechanical rock-breaking drilling process of a vertical shaft heading machine in a broken stratum. The mechanical rock-breaking drilling process of the vertical shaft heading machine in the broken stratum comprises the following steps: step A, preparation work: connecting a raise-drilling rod with the vertical shaft heading machine; step B, starting of drilling: pushing a gear reduction box to move downwards by a telescopic oil cylinder, then enabling a drill bit to move downwards, and enabling a quarter shield to synchronously move downwards along with a sliding ring on the gear reduction box to temporarily support a well side; step C, circulating drilling: matching the raise-drilling rod with a shoe plate, and circulating the step B; step D, supporting the well side by workers on a hanging scaffold; and step E, completion of drilling: completing drilling by circulating the steps B-D. According to the invention, the vertical shaft heading machine is lifted by using the raise-drilling rod, so that the vertical stress of the shoe plate is canceled, and the shoe plate only bears the reaction torque driven by the rotation of the drill bit, so that the supporting force of the shoe plate on a broken well wall is reduced to the minimum, and the reaction torque can also be provided in the broken stratum.

Description

technical field [0001] The invention relates to the technical field of drilling technology. Specifically, it is a mechanical rock-breaking drilling process for shaft boring machines in broken strata. Background technique [0002] In the prior art, the existing rock formation mine construction projects mostly adopt the common method of sinking construction, which requires a large number of workers to go down to the narrow and small excavation face hundreds of meters deep, and use drilling rigs to drill blast holes, pack explosives, and work. Face blasting, lifting the rocks broken by blasting to the ground through buckets, draining the working face, and then performing support and other operations. The level of mechanization is low, the labor input is high, the working environment is difficult, the safety conditions are poor, accidents occur frequently, and the blasting disturbs the surrounding rock greatly, the stress of the original rock changes greatly, and the support is...

AI Technical Summary

Problems solved by technology

When the roadheader is drilling into the wellbore, the tangential load formed by the working reaction torque of the roadheader also needs to be borne by the supporting mechanism, which will cause great pressure on the inner wall of the wellbore, which is easy to cause damage to the inner wall of the wellbore; and in the shaft When the roadheader is correcting the deviation, the connection between the hoisting device and the shaft roadheader is prone to bending or even twisting, which poses a safety hazard, and there is no better drilling process for the shaft roadheader in the prior art

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