Discussion on Highway Tunnel Monthitoring Measurement Control Standards

Tan, Long Jin; Zhou, Hong Qing; Chen, Kai-Sheng

doi:10.4028/www.scientific.net/amm.580-583.1127

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the safety control index database system adapted to different geotechnical, hydrogeological, and environmental conditions in different cities and different construction methods has become a top priority. erefore, the research on the safety control index of underground engineering monitoring will be the key research direction [24].…”

Section: Layout Of Monitoring Points and Safety Control Standardsmentioning

confidence: 99%

Automatic Monitoring System in Underground Engineering Construction: Review and Prospect

Wang

Qiu

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

Automatic monitoring system is one of the main means to ensure the safety of underground engineering construction. This paper summarizes the current international research and application status of the underground engineering monitoring system from three aspects of data acquisition, data transmission, and data processing and emphatically introduces the mainstream new technology of the monitoring system. Furthermore, this paper puts forward specific and implementable technical routes based on the current intelligent technology and the challenges faced by future monitoring, which can provide direction and reference for future research, including high-precision real-time acquisition and safe and reliable transmission of monitoring data, multisource data fusion, and the visual intelligent early warning platform.

show abstract

Section: Layout Of Monitoring Points and Safety Control Standardsmentioning

confidence: 99%

Automatic Monitoring System in Underground Engineering Construction: Review and Prospect

Wang

Qiu

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…For instance, in the case of the Alberg Tunnel in Austria, the allowable net displacement was specified as 10% of the tunnel radius or the length of the anchor, preferably not exceeding 30 cm. Tan et al [9] suggested that the maximum allowable displacement varied with burial depth and was approximately 1/1000 of the burial depth. Skempton and MacDonald [10] suggested limits on structural deformations based on studies of permissible structural deformations.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Critical Thresholds for Surrounding Rock Stability in TBM Tunnels Utilizing Limit State Analysis

Guo,

Yu,

Shi

et al. 2024

Buildings

View full text Add to dashboard Cite

The safety and stability of tunnel construction are paramount concerns in tunnel engineering. Traditionally, the assessment of tunnel stability involves evaluating whether tunnel displacement and deformation velocities exceed acceptable thresholds, using specifications and analogical reasoning. However, standardized cautionary indicators often lack adaptability and can result in unnecessary reinforcement and increase economic costs. This study presents a method for determining limit displacement and deformation velocities based on tunnel deformation limit states. Based on the finite difference method, which considers the quality of surrounding rock mass and tunnel geometric configuration, a parametric analysis of these velocities is presented. The vault settlement, relative spandrel displacement, relative hance displacement, and deformation velocity are investigated to establish the thresholds for displacement and deformation velocities. Furthermore, a sensitivity analysis using a multivariate adaptive spline regression model is performed to measure the parameter effects on the early allowance values. Finally, a response surface method is developed to estimate the indicators in order to provide criteria for assessing and warning about surrounding rock stability. The obtained results show that the proposed limit state analysis method is effective for providing a standardized criterion for tunnel excavation, and the sensitivity analysis indicates tunnel depth as the most influential factor on tunnel reliability.

show abstract

Tunnel construction in shallow soft rock using the pipe shed support

Bao,

Wei

2024

Sci Rep

View full text Add to dashboard Cite

In order to clarify the impact mechanism of shallow buried soft rock tunnel excavation on the upper existing highway, as well as the mechanism of pipe shed reinforcement, a combination of theoretical analysis and on-site monitoring was used to conduct in-depth research on the Diantou Tunnel Crossing the existing highway project of Dayong Expressway. The impact of shallow buried soft rock tunnel crossing construction on the existing highway and safety control issues were studied, a new deformation control index, namely deformation difference rate, was introduced. The results show that the main lateral area of influence of rock deformation is within a distance of one diameter, and the overall area of influence is within a distance of twice the diameter. From the perspective of axial tunnel deformation, the deformation of surrounding rock tends to be stable when the excavation face passes through the monitoring section about twice the tunnel diameter. Effectively controlling rock deformation depends on the total amount of settlement deformation, the change rate of deformation, and the difference rate of deformation. For V-class shallow buried tunnel surrounding rock, in order to prevent cracks on the surface, the cumulative deformation of the surrounding rock needs to be less than 50 mm, the change rate needs to be less than 3 mm/day, and the difference rate needs to be less than 5 mm/m. Finally, the proposed control standard for surface subsidence is given for similar engineering reference.

show abstract

Discussion on Highway Tunnel Monthitoring Measurement Control Standards

Cited by 3 publications

References 0 publications

Automatic Monitoring System in Underground Engineering Construction: Review and Prospect

Automatic Monitoring System in Underground Engineering Construction: Review and Prospect

Evaluation of Critical Thresholds for Surrounding Rock Stability in TBM Tunnels Utilizing Limit State Analysis

Tunnel construction in shallow soft rock using the pipe shed support

Contact Info

Product

Resources

About