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Submerged tunnel ventilation shaft and submerged tunnel ventilation system

A technology for underwater tunnels and ventilation shafts, which is applied in mine/tunnel ventilation, shaft equipment, shaft lining, etc., and can solve problems such as large impact on the ecological environment

Pending Publication Date: 2020-05-05
CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an underwater tunnel ventilation shaft and an underwater tunnel ventilation system to solve the problem that the underwater tunnel ventilation shaft has a great impact on the ecological environment

Method used

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  • Submerged tunnel ventilation shaft and submerged tunnel ventilation system
  • Submerged tunnel ventilation shaft and submerged tunnel ventilation system
  • Submerged tunnel ventilation shaft and submerged tunnel ventilation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1, the first roller and / or the second roller and one of the longitudinal cables 51 are a sprocket and chain cooperation structure. That is to say, a sprocket structure can be arranged on the first roller and the second roller arranged side by side, and likewise, a chain structure is also arranged on the two longitudinal cables 51, thereby synchronously driving the first roller and the second roller to rotate through the power unit, To further drive the two longitudinal cables 51 to rotate simultaneously, a sprocket structure can also be provided only on the first roller, and correspondingly, a chain structure is provided on one longitudinal cable 51 to perform unilateral driving. In order to ensure the synchronism of the suspended ladder, it is preferable to provide a technical solution of a sprocket structure on both the first roller and the second roller.

Embodiment 2

[0056] Embodiment 2, the suspended ladder with automatic safety belt unlocking function also includes a pinch wheel (not shown in the figure), the first roller and the second roller are both pulleys, the longitudinal cable is a belt, and the pinch wheel is used to connect with the first The roller and / or the second roller cooperate to grip the longitudinal cable. This embodiment is similar to the solution of the first embodiment, except that the transmission form is changed, and those skilled in the art only need to make a suitable choice according to the actual application environment.

[0057] In this embodiment, the side of the block 70 facing the outer side of the upper part of the hook body 81 is a slope or an arc structure. Thereby, it is beneficial for the smooth friction between the hook body 81 and the stopper 70, and also makes the rotation of the hook body 81 more stable. Specifically, the top of the hook body 81 is a cam-shaped structure 812 , and the bottom of th...

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PUM

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Abstract

The invention relates to the field of submerged tunnels and provides a submerged tunnel ventilation shaft and a submerged tunnel ventilation system. The submerged tunnel ventilation shaft comprises afloating platform, a shaft body and a plurality of first anchor cables. The shaft body is of a flexible bendable structure. The bottom of the shaft body communicates with an air duct of a submerged tunnel. The top of the shaft body extends out of the water surface and is connected with the floating platform. One ends of the first anchor cables are connected with the water bottom, the other ends ofthe first anchor cables are connected with the floating platform, and the multiple first anchor cables are distributed on the floating platform in the circumferential direction. The shaft body arrangement mode has less impact on the marine environment, the construction cost, operational cost, implementing difficulty, construction risks and operational risks are lowered, and the situation that artificial island construction damages the water ecological environment is avoided.

Description

technical field [0001] The invention relates to the technical field of underwater tunnels, in particular to an underwater tunnel ventilation shaft and an underwater tunnel ventilation system. Background technique [0002] Municipal projects such as subsea tunnels and cross-river subway tunnels are currently very important transportation buildings. Due to the closed environment of tunnels, the thermal effect of vehicle exhaust, harmful gases, and fire smoke directly affect the safety of drivers and passengers. Therefore, tunnel ventilation is a safety issue that must be solved in tunnel construction. Although there are many related studies at present, the ventilation of underwater tunnels is basically to set the vents on both ends of the bank. The longer the length of the ventilation pipe, the greater the loss of ventilation energy consumption, so the ventilation efficiency will increase with the length of the tunnel. However, it is difficult to effectively complete ventilat...

Claims

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Application Information

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IPC IPC(8): E21F1/00E21F11/00E21D5/11B66F17/00B66F13/00B66F11/00
CPCB66F11/00B66F13/005B66F17/00E21D5/11E21F1/003E21F11/00
Inventor 刘胜
Owner CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP