Mobile platform device for accelerating cooling of high-temperature section of tunnel

Abstract

The invention discloses a mobile platform device for accelerating cooling of a high-temperature section of a tunnel. The mobile platform device comprises a drilling and blasting trolley main body, andthe drilling and blasting trolley main body comprises a first construction platform and a second construction platform; at least one fan inside the tunnel is connected with the drilling and blastingtrolley main body, and at least one fan inside the tunnel is located above the second construction platform; and the air discharging direction of at least one fan inside the tunnel is opposite to thedirection of an outlet of the tunnel. According to the mobile platform device for accelerating the cooling of the high-temperature section of the tunnel, the construction cost is low, and resources can be utilized effectively; the equipment mobile performance in the process of the tunnel construction is good, and the cooling mobile platform cannot be affected by causes including blasting and the like; the smoke dust eliminating time in the tunnel is shortened due to the continuous ventilation of the cooling mobile platform device; the temperature in the tunnel can be lowered effectively, and meanwhile, the ventilation in the tunnel can be accelerated; and the device aims at creating a good environment for the construction in the tunnel and ensuring the safe construction.

Description

technical field [0001] The invention relates to the technical field of tunnel cooling equipment, in particular to a mobile platform device for accelerating the cooling of the high temperature section of the tunnel, which has a simple structure, is detachable, movable, easy to operate, and can effectively accelerate the air flow in the tunnel. Background technique [0002] During the construction of the water diversion tunnel project, due to the geothermal section, high temperature will appear downstream of the main tunnel. As the temperature will gradually increase with the excavation depth, the high temperature problem will become more and more prominent, and it will become one of the key technical problems affecting the smooth progress of the project. one. The impact of high geothermal heat on excavation and quality includes (1) the impact of high geothermal heat on tunnel excavation ① Through other engineering practices, it has been found that when the temperature of the ...

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Problems solved by technology

The impact of high geothermal heat on excavation and quality includes (1) the impact of high geothermal heat on tunnel excavation ① Through other engineering practices, it has been found that when the temperature of the rock mass exceeds 55 °C, the use of ordinary ammonium nitrate explosives will cause expansion, and the nonel will expand. Non-recoverable deformation will occur, and there will be dumb or explosive failure, causing great safety hazards and seriously affecting the excavation progress; ②Hazard of high-temperature hot water splashing: In high-temperature zones, there are often underground hot springs. Once a large flow of high-temperature occurs Hot water will cause great harm to human body and machinery

(2) The impact of high geothermal heat on construction quality ① Due to the increase in ambient temperature, the main body of the operation (that is, the construction personnel) will be affected, making it impossible for them to do their best in the construction work. and the direction deviation is large; ②Measuring instruments sometimes cannot work normally, such as: infrared measuring instruments cannot normally penetrate the water mist generated by geothermal heat; because the concrete is a thin-walled structure, the temperature of the rock wall is too high, and the water in the shotcrete will evaporate Falling, hardening before its initial setting, causing delamination and block loss

In the current technology, in order to speed up the ventilation of the tunnel, fans are usually installed outside the tunnel. However, as the tunnel enters the geothermal section, the ground temperature continues to rise, and the original fans installed outside the tunnel are far from meeting the conditions for normal production on site.

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