Momentum balance seal

Abstract

The invention discloses a momentum balance sealing device which comprises a reinforcing steel bar, inner top trays, outer top trays, silica gel sealing sleeves, non-woven fabric bags, nuts and steel pins, wherein the openings of the two cup-shaped silica gel sealing sleeves are formed in opposite directions, the non-woven fabric bags are arranged in the cup-shaped silica gel sealing sleeves of which the two openings are formed in opposite directions, the two inner top trays are arranged inside the cylindrical non-woven fabric bags respectively and positioned at the cup bottoms of the cup-shaped silica gel sealing sleeves respectively, the two outer top trays are respectively arranged on the outer walls of the cup bottoms of the two silica gel sealing sleeves, the reinforcing steel bar penetrates through the centers of the two outer top trays, the two ends of the reinforcing steel bar are fixed on the outer walls of the outer top trays through the nuts, through holes are formed in the reinforcing steel bar and at the tops of the nuts, and the steel pins are arranged in the through holes. According to the momentum balance sealing device, the capacity usage ratio of a disintegrating agent is high, expansion pressure on hole walls are high, the reaction time of the disintegrating agent is short, the disintegrating latency time is effectively reduced, and the static blasting efficiency is improved.

Description

technical field

[0001] The invention belongs to the field of blasting excavation, in particular to a momentum balance sealing device, which is used for large-diameter static blasting with a blast hole diameter greater than 50 mm. Background technique

[0002] In mining and urban construction, the traditional blasting method is often restricted, especially in some blasting sensitive areas. Various blasting hazards such as seismic waves and noise caused by explosive blasting will have a great impact on the surrounding environment. The static crushing technology based on the principle of expansion force generated by the reaction of static crushing agent and water can better solve the problem of rock breaking in blasting sensitive areas.

[0003] In 1968, Hideo Tanaka of Japan’s Technological Research Institute first studied the static breaking agent. He mixed quicklime and water to make a slurry, filled it into the drill hole, and generated Ca(OH) through CaO hydration. 2 , re...

Examples

Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] combine figure 1 , a momentum balance sealing device, including a steel bar 1, an inner top plate 2, an outer top plate 3, a silicone sealing sleeve 4, a non-woven bag 5, a rubber gasket 6, a nut 7 and a steel pin 8; two cup-shaped The cup openings of the silicone sealing sleeve 4 are placed facing each other, the cylindrical non-woven fabric bag 5 is set in two cup-shaped silicone sealing sleeves 4 placed opposite to each other, and the two inner top plates 2 are respectively set in the cylindrical non-woven fabric bag 5 , and are respectively located at the cup bottom of the cup-shaped silicone sealing sleeve 4, and the two outer top plates 3 are respectively arranged on the outer walls of the cup bottom of the two silicone sealing sleeves 4, the steel bar 1 runs through the center of the two outer top plates 3, and the two ends of the steel bar 1 pa...

technical field

[0001] The invention belongs to the field of blasting excavation, in particular to a momentum balance sealing device, which is used for large-diameter static blasting with a blast hole diameter greater than 50 mm. Background technique

[0002] In mining and urban construction, the traditional blasting method is often restricted, especially in some blasting sensitive areas. Various blasting hazards such as seismic waves and noise caused by explosive blasting will have a great impact on the surrounding environment. The static crushing technology based on the principle of expansion force generated by the reaction of static crushing agent and water can better solve the problem of rock breaking in blasting sensitive areas.

[0003] In 1968, Hideo Tanaka of Japan’s Technological Research Institute first studied the static breaking agent. He mixed quicklime and water to make a slurry, filled it into the drill hole, and generated Ca(OH) through CaO hydration. 2 , re...

Examples

Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] combine figure 1 , a momentum balance sealing device, including a steel bar 1, an inner top plate 2, an outer top plate 3, a silicone sealing sleeve 4, a non-woven bag 5, a rubber gasket 6, a nut 7 and a steel pin 8; two cup-shaped The cup openings of the silicone sealing sleeve 4 are placed facing each other, the cylindrical non-woven fabric bag 5 is set in two cup-shaped silicone sealing sleeves 4 placed opposite to each other, and the two inner top plates 2 are respectively set in the cylindrical non-woven fabric bag 5 , and are respectively located at the cup bottom of the cup-shaped silicone sealing sleeve 4, and the two outer top plates 3 are respectively arranged on the outer walls of the cup bottom of the two silicone sealing sleeves 4, the steel bar 1 runs through the center of the two outer top plates 3, and the two ends of the steel bar 1 pa...

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