Intelligent Control of Ventilation, Lighting and Disaster Prevention for Highway Tunnel Group or Abut Tunnels

He, Chuan; Fang, Yong; Zeng, Yanhua; Zhang, Yuchun

doi:10.1061/41039(345)360

Cited by 4 publications

(4 citation statements)

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“…As mining depths increase, the surrounding rock exhibits soft rock characteristics and becomes prone to significant deformation, instability, and support failure, rendering the classical Protodyakonov's Equilibrium Arch Theory and the New Austrian Tunneling Method, which originally catered to small deformations in shallow and moderately stressed rock masses, unsuitable. Extensive research has been conducted by domestic and foreign researchers into the theory and methods of controlling deep soft rock roadway surrounding rock to effectively mitigate the issue [27][28][29] .He et al 30 proposed a new support theory for deep-buried roadway engineering, the excavation compensation method, which is suitable for large deformations in deep-buried roadway surrounding rock. Based on the analysis of the failure characteristics and mechanism of the two sides of the deep roadway, Kang et al 31 conducted a case study on the extreme squeezing ground conditions of coal mines at a depth of 1000 meters.…”

Section: Introductionmentioning

confidence: 99%

Active-Passive Collaborative Compensation Support Technology and Application in Deep Large Deformation Soft Rock Roadways: A case study

Hao,

lv,

Tang

et al. 2024

Preprint

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Deep large deformation soft rock roadways pose significant challenges to the safety of coal mining operations and supply due to the development of cracks, loose fragmentation, and deformation failure of surrounding rocks. To effectively control fractured soft rock roadway surrounding rocks in deep mining areas, this paper analyzed the causes of deformation and failure of surrounding rock in deep soft rock roadways using the Xin’an Coal Mine 2301 working face as the engineering background. By establishing active and passive support mechanical models, the interaction mechanism between active and passive supports was clarified, and the effectiveness of active-passive collaborative support was further validated. The research results indicate that: 1) The original single active or passive support scheme on the Xin’an Coal Mine 2301 working face cannot provide effective strong support for fractured surrounding rock, resulting in a short period of rock control. Therefore, the concept of active-passive collaborative compensation support for controlling the stability of surrounding rock in roadways was proposed. 2) Passive support provides impedance to the roadway, preventing stress attenuation around anchor points and enhancing the effect of active support, while active support strengthens the bearing capacity of the surrounding rock and improves the overall integrity, providing support. Based on the excavation compensation theory, a mechanical model of active-passive collaborative compensation support was established, and the amplification effect of active-passive collaborative support was revealed. 3) A collaborative support scheme of “bolts, W-shaped steel belts” + “anchor cables, anchor cable beams” + “I-beam sheds” was proposed and applied in the field, with average convergence values of both slopes and roof/floor 334.2 mm and 508.4 mm, respectively, and the average relative convergence rate of roof/floor and both slopes 11.9%, effectively controlling the deformation of the roadway surrounding rock. The active-passive collaborative compensation support scheme achieves positive application outcomes in deep fractured soft rock roadway mining, providing reference for the design of similar support parameters in deep fractured soft rock roadway.

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Section: Introductionmentioning

confidence: 99%

Active-Passive Collaborative Compensation Support Technology and Application in Deep Large Deformation Soft Rock Roadways: A case study

Hao,

lv,

Tang

et al. 2024

Preprint

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“…At present, no specific definition standard for tunnel groups is available [10], although relevant research has been carried out in the industry. e studies have been focused on tunnel ventilation and lighting [7], traffic safety [10], fire safety [11], lane retention length and alignment, and the lighting adaptation process [12], etc. Yang and Guo [13] defined a tunnel group as two or more tunnels whose space is shorter than 1000 m. ere remains a lack of research on the definition of tunnel groups from the perspective of the physiological characteristics of drivers.…”

Section: Introductionmentioning

confidence: 99%

Impact of Tunnel Groups on Pupil Diameter of Drivers on Mountainous Freeway in China: A Real-World Driving Study

Gao

Zhang

et al. 2021

Journal of Advanced Transportation

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A real-world driving experiment was performed in the Wen-Ma section of the G4217 Rong-Chang Freeway situated in the Sichuan Province to investigate the impact law of the pupil diameter of drivers in tunnel groups on the mountainous freeway. The eye-movement data of drivers were collected, and the percentage of pupil diameter variable (PPDV) was used as a visual characteristic index. The analysis of the overall change in the PPDV of drivers in the experimental sections demonstrated that the PPDV in tunnel groups differed significantly between the nontunnel sections and single tunnel sections. Subsequently, a related model for the PPDV of drivers and the length of the connecting zone between tunnels was established, its reliability evaluated, and the smooth mutation value obtained on the basis of the mutation theory. Thereafter, a tunnel group definition standard based on the visual effect of drivers was developed. A six-zone approach was devised for the analysis of tunnel groups, and the result revealed that the different zones in the tunnel group have different impact on PPDV of drivers. The results revealed that the different zones of tunnel group have different impact on PPDV of drivers. Furthermore, lighting transition facilities should be set in the exit section of tunnel. The PPDV of drivers was negatively correlated with the length of the connecting zone of tunnel groups, and 100 m is the recommended safety length threshold for the connecting zone of tunnel groups.

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“…Fuzzy control method to a road tunnel ventilation system was clearly presented by many scholars. The intelligent ventilation control for tunnel group or abut tunnels was discussed by Chuan He [1]. The application of fuzzy control to a road tunnel ventilation system was introduced by Ping-Ho Chen [2].…”

Section: Introductionmentioning

confidence: 99%

Intelligent Control of Ventilation System for Tunnel Group of Highway Section

Jiang

Fang

Zhou

et al. 2014

AMM

Self Cite

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With the development of tunnel technology, the number of tunnels becomes huge in some area, and adjoining tunnels turn into tunnel group in some highway sections. So, to ensure the traffic safety, the linkage ventilation control system for the tunnels of the whole highway section is necessary and essential. In this research, obtaining the live traffic information of each tunnel is the key point. This article attempts to build up an intelligent ventilation system which makes traffic flow data of every tunnel available and predictable. The system achieves information sharing and build up weight-based traffic forecasting model. In addition, the composition of fuzzy-logic ventilation control model is introduced. The research might expand the application of intelligent tunnel ventilation control system and could provide references to other linkage ventilation control system of tunnel groups.

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Intelligent Control of Ventilation, Lighting and Disaster Prevention for Highway Tunnel Group or Abut Tunnels

Cited by 4 publications

References 0 publications

Active-Passive Collaborative Compensation Support Technology and Application in Deep Large Deformation Soft Rock Roadways: A case study

Active-Passive Collaborative Compensation Support Technology and Application in Deep Large Deformation Soft Rock Roadways: A case study

Impact of Tunnel Groups on Pupil Diameter of Drivers on Mountainous Freeway in China: A Real-World Driving Study

Intelligent Control of Ventilation System for Tunnel Group of Highway Section

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