Mobile Filter System for Tunnel Wall Renovation Dust Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The rehabilitation of multi-track tunnel tubes poses challenges due to dust accumulation, which hinders work and affects traffic safety and operation, especially during low-traffic periods, as existing methods fail to effectively manage dust and ensure continuous operation while adhering to environmental and safety regulations.
Innovation Solution
A mobile filter system is employed to suck in and clean dust-laden air, ensuring clean air is maintained within the tunnel, with a power unit for independent operation and acceleration fans to provide fresh air, and the system is designed to be easily movable and integrated with working machines to minimize disruption and dust deposition on tracks and contact lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If renovation work is carried out in the tunnel tube during low-traffic periods, then the tunnel wall can be cleaned, drilled, and renovated, but dust accumulates during this work which hinders the work and settles on electrical contact lines and tracks causing errors or faults
Solution Approach 1:
The harmful dust is extracted from the working area using a mobile filter system with suction devices that actively remove dust particles from the air in the tunnel tube, preventing dust accumulation on contact lines and tracks while allowing renovation work to continue
Solution Approach 2:
A mobile filter system acts as an intermediary between the renovation work and the tunnel environment, capturing dust particles before they can settle on sensitive components like electrical contact lines and tracks, thus mediating between the need for renovation and the need to maintain operational safety
2Ease of operation
If the working machines are moved out of the tunnel tube to be parked at the side, then more space is available for work, but the work area must be cleared again so that traffic is not further impeded
Solution Approach 1:
The filter system is designed to be mobile and dynamically repositionable within the tunnel tube, allowing it to follow the working machines as they move between different work areas, eliminating the need to clear the entire work area and reducing traffic disruption time
3Ease of manufacture
If the tunnel wall is cleaned and renovated with cutting tools, then the tunnel wall can be restored, but material shredded during cutting and dust accumulate which need to be collected and dedusted
Solution Approach 1:
The mobile filter system converts the harmful shredded material and dust generated by cutting tools into a manageable stream that can be captured and removed, transforming the waste problem into a controlled extraction process that maintains workability and safety
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces the impact of renovation work on traffic, ensures continuous operation, and maintains air quality by effectively filtering dust and exhaust gases, allowing for accelerated and safer tunnel rehabilitation with minimal disruption to traffic and operations.
Implementation Method 1
the suction fan (14) of which is designed to suck the dusty air produced during the renovation work as close as possible to the point of origin
Implementation Method 2
the air containing dust and exhaust gases is sucked through a filter, whereby the pollutants, in particular the dust, are deposited there
Implementation Method 3
one or more acceleration fans serving the latter are arranged in the direction of the weather in front of the working machines and the filter system. This acceleration fan sucks in the air volumes and can thus ensure that sufficient amounts of fresh air are available in the work area
Data Source
Figure 1~2
Figure 3~4
AI summary
The method involves cleaning, drilling out, reinforcing a tunnel wall during shutdown or less traffic time. The drilled out section of the tunnel wall is plastered with mortar such that a track bed in navigable tunnel sections is cleaned. A required work machine is parked infront of a place, moved from the place after completion or interruption of the works and parked in a side track. Dusty air and/or air heavily loaded with exhaust gas is sucked off from originating points (11, 12) during renovating process and is cleaned by a filter system (6) co-operating with a processing machine (4). An independent claim is also included for a system for renovating and/or expanding navigable tunnel sections.