Slag discharging device and method for small-section long-steep-slope tunnel in plateau area

Abstract

The invention discloses a slag discharging device for a small-section long-steep-slope tunnel in a plateau area. The slag discharging device comprises a slag raking machine, a traction rope, a transportation vehicle body and a winch. A positioning mechanism is arranged on the slag raking machine. A guide wheel is arranged on the tail portion of the slag raking machine. The transportation vehicle body is positioned between the slag raking machine and the winch. A fixed wheel is arranged at a portal of the tunnel. One end of the traction rope is fixed to the transportation vehicle body, and theother end of the traction rope sequentially passes through the guide wheel and the fixed wheel and then is connected with the winch. The invention further discloses a using method of the device. By means of the device and method, the emission of tail gas of a gas power machine is reduced, and the safety of workers is ensured; no rail needs to be arranged, so that the implementation cost is low; due to the utilization of the steep slope of the tunnel ground, the transportation vehicle body automatically moves towards the tunnel portal under the action of self-gravity during slag transportation,so that the winch does not need to provide too large pulling force, and the energy consumption is relatively low; and the traction rope is used to pull the transportation vehicle body, so that the transportation vehicle body moves slowly, safety accidents caused by the rapid movement of the transportation vehicle body along the tunnel ground are avoided, and the transportation safety is ensured.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a slag discharging device and method for tunnels with small cross-sections and long steep slopes in plateau areas. Background technique [0002] At present, the tunnel excavation at home and abroad is still dominated by the drilling and blasting method. The drilling and blasting method is to complete a blasting cycle operation through technological processes such as blasthole drilling, hole cleaning, ventilation and risk removal, slag removal after blasting, and tunnel support. . The blasting cycle directly affects the total construction period of the entire tunnel, and the slag removal after blasting occupies most of the time in a single blasting cycle. For this reason, in order to speed up the speed of slag removal after blasting, shorten the blasting cycle period, and shorten the total construction period of the tunnel through the whole line, it is imminent to stu...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a slag discharge device and method for small-section, long-steep-slope tunnels in plateau areas, so as to solve the following problems: 1. The size of the tunnel section is small, and the limited space prevents conventional slag discharge machines from entering the tunnel to start work; The track laying cannot form a slag loading and transportation cycle; 2. The influence of the steep slope makes it difficult to discharge slag in the cave. The risk of slag discharge machinery and slag discharge transportation is too high, and it is easy to rush out of the cave and fall off the cliff; 3. Oxygen is thin in high altitude areas. There are too many gas-fired machinery in the narrow space of the small-section tunnel, and a large amount of exhaust gas is emitted to cause suffocation accidents

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