Hydraulic rock breaking process capable of continuously splitting rock at multiple points in drill hole

Abstract

The invention discloses a hydraulic rock breaking process capable of continuously splitting rock at multiple points in a drill hole. The hydraulic rock breaking process comprises the following steps of (A) drilling; (B) connecting an oil way; (C) enabling a splitting gun to enter a hole; (D) splitting a hole opening; (E) putting the splitting gun; (G) judging whether the hole bottom is split or not; and (H) enabling the splitting gun to exit from the hole, and switching to the next drill hole. According to the hydraulic rock breaking process, the splitting gun based on a multi-stage series hydraulic oil cylinder is completely inserted into the drill hole, and a splitting front support is extruded to expand transversely so as to apply splitting force to the inner wall of the drill hole at the hole opening; when the tensile stress caused by the splitting force in the rock exceeds the tensile strength of the rock, the rock at the hole opening is split to generate cracks; and the splitting gun can overcome the defect that an existing splitting gun cannot extend into the drill hole, continuous multi-point splitting can be achieved in the drill hole, and the splitting depth is increased, so that the splitting rock breaking efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of construction techniques for non-explosive crushing of rocks by adopting a hydraulic splitting method, and in particular relates to a hydraulic rock breaking technology capable of continuous multi-point splitting in a drill hole. Background technique [0002] At present, the general technology of adopting hydraulic splitting gun to break rock is: (1) adopting drilling rig to drill a plurality of boreholes with appropriate spacing on the surface of the excavated rock, the borehole diameter is slightly larger than the maximum size of splitting head cross section, The depth generally does not exceed 50cm; (2) insert the splitting head of the splitting gun (the splitting head includes a middle wedge and two half-moon splitting blocks) into the inside of the drill hole, and use the oil pipe to connect the oil pump to the splitting gun; ( 4) Start the oil pump, turn on the oil circuit switch, and the piston of t...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art, and to provide a rock hydraulic rock breaking process capable of continuous multi-point splitting in the borehole. The splitting gun of the hydraulic cylinder realizes the purpose of continuous multi-point splitting in the axial direction in a borehole, thereby overcoming the inefficiency of rock breaking caused by the inability of the existing hydraulic splitting gun to be fully inserted into the borehole

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