Deep-hole smooth tunnel blasting system and construction method for tunnel

Abstract

The invention relates to a deep-hole smooth tunnel blasting system. The deep-hole smooth tunnel blasting system comprises a multi-shaft drilling mechanism and a deep-hole smooth blasting mechanism; the drilling mechanism comprises a drill rod arranged on an adjusting bracket, the drill rod is driven by a horizontal driving mechanism to move horizontally and implement hole digging operation, and a spatial position, located on the adjusting bracket, of the drill rod can be adjusted; the deep-hole smooth blasting mechanism comprises a plurality of explosive material charging tube standard joints arranged in a blasting hole; tube openings of the explosive material charging tube standard joints are sequentially connected to form a blasting tube, and trays are arranged on the connecting parts of adjacent explosive material charging tube standard joints for supporting explosive materials; a base is arranged at one end of the blasting tube, and a top cover is arranged at the other end of the blasting tube; and a through hole is formed in the tray surface of the tray for penetrating of a detonating cord, the detonating cord sequentially and upwardly penetrates through the through hole in the tray from the base and leads out from a through hole formed in the top cove of the blasting tube, and cracks are further arranged on the tray. The deep-hole smooth tunnel blasting system can improve the drilling efficiency, and weaken the influence of complex geological environment of a coal mine on explosive material charging at the same time, and premature overflowing of explosion gas is prevented.

Description

technical field [0001] The invention relates to the technical field of blasting, in particular to a blasting system for a deep-hole smooth tunnel and a construction method for the tunnel. Background technique [0002] At present, due to the high strength of rock in our country, the construction efficiency of roadheaders is low, the cost of equipment is high, and the mechanical wear is large. In particular, it is greatly affected by the construction environment and has poor adaptability. Drilling and blasting has good adaptability to geological conditions, low construction cost, relatively mature technology, and is currently widely used. Drilling rigs and portable rock drills are mostly used as drilling tools. The cost of drilling rigs is more expensive because it cannot be used due to the limitation of the size of the excavation section. Also affected by the excavation section, it is not convenient for multiple portable rock drills to work at the same time. , A rock drillin...

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Problems solved by technology

[0009] The object of the present invention is to provide a blasting system for a deep-hole smooth tunnel and a construction method for the tunnel, to provide a method of maximally enhancing the water-proof and waterproof ability of the surrounding rock of the excavated rock mass, and at the same time solve the problem of joint and fissure rock mass reinforcement. At the same time, it can improve drilling efficiency, improve the effective utilization rate of explosives, weaken the impact of complex geological environment on charges, prevent blasting gas from overflowing prematurely, improve safety and crushing effects, and control blasting vibration hazards at the same time, reducing construction and development costs. dig cost

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