Hole filling device and method for tunnel high-pressure gas rock breaking

Abstract

The invention discloses a hole filling device and method for tunnel high-pressure gas rock breaking, and relates to the technical field of hard rock breaking. The device comprises a filling pipe and afilling rod, wherein a through hole with two through ends is formed in the filling pipe; the outer diameter of the filling pipe is smaller than the hole diameter of a cracking hole; the length of thefilling pipe is larger than the depth of the cracking hole; a horizontal discharging groove is formed in a port of one end of the filling pipe; a filling pipe guide groove is formed in the portion, from one side close to the handheld end to the port of the handheld end of the filling pipe, of the discharging groove; a filling rod guide groove is formed in the side wall of the filling rod; the length of the filling rod is larger than that of the filling pipe; the outer diameter of the filling rod is smaller than the hole diameter of the filling pipe; and the width of the filling rod guide groove is larger than that of the filling pipe guide groove. By adopting the hole filling method for tunnel high-pressure gas rock breaking on the basis of the filling device, the technical problems thatin the implementation process of safe and efficient rock breaking through high-pressure gas in a tunnel, grouting hole blocking operation is difficult, filling is not dense, the rock breaking effect is poor due to poor filling quality, and the filling material is seriously wasted are solved.

Description

Technical field

[0001] The invention relates to the technical field of hard rock breaking rock, in particular to a hole filling device and method for tunnel high-pressure gas rock breaking. Background technique

[0002] High-pressure gas expansion rock breaking technology is a new type of environmentally friendly rock breaking technology, which belongs to the category of non-explosive blasting rock breaking. It is different from traditional explosive blasting technology. It uses physical or non-violent chemical methods to generate high-pressure gas. A high-pressure gas expansion tube is installed in the rock mass. The trigger (point) at the bottom of the expansion tube is excited by a trigger device to make the expansion tube The high-pressure gas is released instantaneously to break it by expanding the surrounding medium. High-pressure gas expansion rock breaking technology does not belong to the real blasting category, but only harmless rock breaking through the action of high...

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