A device and method for filling and blocking tunnels with advanced geological prediction of blastholes

Abstract

The invention discloses a tunnel geological prediction blasthole stemming device and method, and solves the problems in the prior art that the blasthole blasting noise is too big, too much dust is generated, the plug blasting effect is poor, and the waste of water sources is caused. The tunnel geological prediction blasthole stemming device and method have the advantages that the operation is simple, the blasting safety is high and the energy utilization ratio is high; the technical scheme lies in that the tunnel geological prediction blasthole stemming device comprises a water-filled explosive sealing water bag arranged in a blasthole and used for preventing blasting wave from dissipating heavily from the gap between the explosive and the hole wall; besides, an explosive and a detonator are arranged in the water-filled explosive sealing water bag; one end of the lead of the detonator is arranged outside the blashole; at least one water-filled plugging water bag is arranged on one side of the water-filled explosive sealing water bag in the blasthole and used for preventing the blasting wave from transmitting out of the blasthole.

Description

technical field [0001] The invention relates to tunnel engineering, in particular to a device and method for filling and blocking blastholes in advance geological prediction of tunnels. Background technique [0002] TSP (Tunnel Seismic Prediction) method, also known as tunnel seismic reflection geological prediction method, is a kind of reflection seismic wave method, based on the principle of wave propagation and reflection. Seismic waves are generated at a designated source point by exciting them with a small amount of explosives. Seismic waves propagate in rocks in the form of spherical waves. When encountering rock physical interfaces (ie, interfaces of difference in wave impedance, such as faults, broken zones, and lithological change interfaces, etc.), part of the seismic signals are reflected back, and part of the signals are transmitted into the front medium. , the reflected seismic signal will be received by a high-sensitivity geophone. The propagation time of the...

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Problems solved by technology

[0004] However, in actual operation, the water source can be used to assist blasting, but the water source cannot be called in most cases. If it is called, the construction process is more complicated. After the call is successful, some directly use the water pipe on the site to continuously fill the water, resulting in waste of water. And the water pipes are easy to be damaged after the explosion, and the site conditions often cannot meet the technical requirements; some simply use anchoring agents to block, so that the explosives are not in full contact with the hole wall, resulting in poor blasting effect, which affects the time and direction of signal return, resulting in accurate measurement reduced

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