Supercritical fluid drilling and blasting integrated double-arm drill jumbo and control method thereof

Abstract

The invention relates to a supercritical fluid drilling and blasting integrated double-arm drill jumbo and a control method thereof, and belongs to the field of tunnel and underground space drilling crack construction. The supercritical fluid drilling and blasting integrated double-arm drill jumbo comprising a pre-splitting arm, a drill arm, a supercritical fluid generation chamber and an operation chamber, and the pre-splitting arm comprises a positioning device, an arc sliding base, a fixing plate, a fixing buckle, a long rod, a connecting block, an electric telescopic rod, a water injection opening and a pressure transmission opening; the supercritical fluid generation chamber comprises a constant pressure valve, an excitation circuit and a mixed-phase fluid injection port. A computer controls the positioning device to perform positioning according to information collected after drilling of the drill arm, after positioning is completed, the fixing buckle on the arc sliding base is controlled to be opened, the electric telescopic rod is started, the long rod is jacked into a proper position in a hole, then oil is injected into a hydraulic expansion capsule through an oil pump, after hole opening blocking is completed, water is injected into the water injection opening till a gap space is filled, the mixed-phase fluid injection port is opened, mixed-phase fluid is injected, the mixed-phase fluid injection port is closed, the excitation circuit is started, and after the pressure rises to a set value, the constant pressure valve is automatically opened, and the rock mass is fractured.

Description

technical field [0001] The invention relates to a supercritical fluid drilling and blasting integrated dual-arm rock drilling jumbo and a control method thereof, which belong to the field of tunnel and underground space drilling and cracking construction. Background technique [0002] In the excavation of tunnels and underground spaces, the drilling and cracking method is a long-lasting method. With the increasing labor costs and the increasing requirements for the construction site environment and personnel health, the trend of mechanization is becoming more and more obvious. . At present, our country has realized mechanization in the basic operations of drilling and cracking. For a single hole, the most common method is to manually control the rock drilling rig or the multi-arm drilling rig for drilling, and the manual loading, filling and blasting are basically used. charge, filling and explosive blasting. On the one hand, purely manual control of the trolley has low ef...

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Problems solved by technology

[0004] Aiming at the above-mentioned defects of the prior art, the present invention provides a supercritical fluid drilling and blasting integrated dual-arm rock drilling jumbo and its control method, which are used to solve the problems of low mechanization, insufficient construction efficiency and construction quality, and environmental problems caused by traditional combination methods. Serious pollution and poor security

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