A Study on the Heat Transfer of Surrounding Rock-Supporting Structures in High-Geothermal Tunnels
Source abstract
Abstract
The temperature distribution is one of the most vital parameters which should be fully considered in high geothermal tunnel design. For the purpose of studying the impact of temperature disturbance caused by construction on temperature distribution of surrounding rock and lining structure in a high geothermal tunnel, a new finite difference model for temperature prediction was proposed. Based on the abundant field test results, forecast analysis for the research of a high geothermal tunnel in this paper is made. The results indicate that the temperature of the surrounding rock near the tunnel sidewall decreases obviously in the first 14 days while that of the surrounding rock far away is stable after tunnel excavation, and the rock temperature showed three ways of change: undulate type (<2 m), decline type (2–5 m) and stable type (>5 m). There is a linear relationship between the initial rock temperature and the released heat of the surrounding rock. The radius of the heat-adjusting layer and the initial rock temperature presents a quadratic function relation. The lining concrete actually cures under the variable high-temperature environment and the real curing temperature decreases with time and becomes stable seven days later. The results would contribute to providing support for high geothermal tunnel research and design.
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Research context
OpenAlex topics: Geothermal Energy Systems and Applications · Rock Mechanics and Modeling · Geotechnical Engineering and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
Funding
National Natural Science Foundation of China
References (42)
Show source-provided references
1. The geothermal potential of Swiss Alpine tunnels10.1016/S0375-6505(03)00061-0 ↗
2. Experimental study on shear mechanical properties and thermal damage model of shotcrete-rock interfaces under variable high temperatures
3. A study on strength characteristics of concrete under variable temperature curing conditions in ultra-high geothermal tunnels10.1016/j.conbuildmat.2019.116989 ↗
4. The use of lightweight aggregate saturated with PCM as a temperature stabilizing material for road surfaces10.1016/j.applthermaleng.2015.02.036 ↗
5. Effect of high temperature on mechanical and acoustic emission properties of calcareous-aggregate concrete10.1016/j.applthermaleng.2016.06.107 ↗
6. Temperature variation in concrete samples due to cement hydration10.1016/j.applthermaleng.2016.05.048 ↗
7. Measurement and evaluation of indoor thermal environment in a naturally ventilated industrial building with high temperature heat sources10.1016/j.buildenv.2015.11.014 ↗
8. Thermal environment and construction workers’ productivity: Some evidence from Thailand10.1016/S0360-1323(02)00067-7 ↗
9. Effects of work in a hot environment on repeated performances of multiple types of simple mental tasks10.1016/j.ergon.2009.07.002 ↗
10. Field test of thermal environment and thermal adaptation of workers in high geothermal tunnel10.1016/j.buildenv.2019.106174 ↗
11. The coupling effect of ventilation and groundwater flow on the thermal performance of tunnel lining GHEs10.1016/j.applthermaleng.2016.10.120 ↗
12. A convection–conduction model for analysis of the freeze–thaw conditions in the surrounding rock wall of a tunnel in permafrost regions10.1007/BF02878846 ↗
13. Nonlinear analysis for the three-dimensional temperature fields in cold region tunnels
14. Three-Dimensional Nonlinear Analysis for the Coupled Problem of the Heat Transfer of the Surrounding Rock and the Heat Convection between the Air and the Surrounding Rock in Cold-Region Tunnel10.1016/j.tust.2004.12.004 ↗
15. Tunnel temperature fields analysis under the couple effect of convection-conduction in cold regions10.1016/j.applthermaleng.2017.03.143 ↗
16. Temperature field analysis of a cold-region railway tunnel considering mechanical and train-induced ventilation effects10.1016/j.applthermaleng.2016.01.070 ↗
17. Smoke spread characteristics inside a tunnel with natural ventilation under a strong environmental wind10.1016/j.tust.2018.08.004 ↗
18. Characteristics of gas phase-controlled flame spread over liquid fuels10.1016/j.applthermaleng.2017.05.111 ↗
19. Determination of smoke layer interface height of medium scale tunnel fire scenarios10.1016/j.tust.2016.02.009 ↗
20. Full-scale tunnel fire experimental study of fire-induced smoke temperature profiles with methanol-gasoline blends10.1016/j.applthermaleng.2017.01.099 ↗
21. Theoretical and experimental study on longitudinal smoke temperature distribution in tunnel fires10.1016/j.ijthermalsci.2015.12.006 ↗
22. A Study on Temperature Distribution of Surrounding Rock and Mechanical Characteristics of Lining of Monglian Tunnel under High Geothermal
23. Modelling of rock temperatures for deep Alpine tunnel projects10.1007/BF01019936 ↗
24. Zhou, X.H. (2012). Study on the Influence of Ventilation on Frost Resistance and Reasonable Range of Resistance for Tunnel in Cold Region. [Master’s Thesis, Southwest Jiaotong University].
25. Zhang, Z.R. (1989). Heat Transfer, High Educational Press.
26. A boundary residual method with heat polynomials for solving unsteady heat conduction problems10.1016/0016-0032(83)90096-0 ↗
27. An analytic approach to the unsteady heat conduction processes in one-dimensional composite media10.1016/S0017-9310(01)00226-5 ↗
28. An analytical study of unsteady heat transfer in the rock surrounding a deep airway10.1016/j.ijmst.2011.12.003 ↗
29. Unsteady One-Dimensional Heat Conduction with a Nonlinear Boundary Condition10.1115/1.3687130 ↗
30. Local fractional variational iteration algorithm iii for the diffusion model associated with non-differentiable heat transfer10.2298/TSCI16S3781M ↗
31. Liu, J., Jiang, Y., and Jin, Y.A. (2010, January 13–14). Dynamic Model of Heat Transfer through Underground Building Envelope. Proceedings of the International Conference on Intelligent System Design & Engineering Application, Changsha, China.10.1109/ISDEA.2010.23 ↗
32. Optimal cooling intervention for construction workers in a hot and humid environment10.1016/j.buildenv.2017.03.032 ↗
33. Optimizing work-rest schedule for construction rebar workers in hot and humid environment10.1016/j.buildenv.2012.12.012 ↗
34. Application of a linear elastic model to the study of crack stability in concrete dams10.18273/revuin.v18n1-2019018 ↗
35. Cracking and Crack Control in Circular Concrete Bridge Members Reinforced with Fiber-Reinforced Polymer Bars10.1061/(ASCE)BE.1943-5592.0001335 ↗
36. Residual compressive and flexural strength of a recycled aggregate concrete following elevated temperatures10.1002/suco.201200037 ↗
37. Shear strength characteristics of shotcrete-rock interface for a tunnel driven in high rock temperature environment10.1007/s40948-016-0039-x ↗
38. Study on support structure system classification of railway tunnel with high rock temperature
39. The effects of solid barriers and blocks on the propagation of smoke within longitudinally ventilated tunnels10.1016/j.buildenv.2019.106207 ↗
40. Numerical study on overall smoke control using naturally ventilated shafts during fires in a road tunnel10.1016/j.ijthermalsci.2019.03.016 ↗
41. Computational evaluation of cooling system under deep hot and humid coal mine in China: A thermal comfort study10.1016/j.tust.2019.05.010 ↗
42. A geothermal recycling system for cooling and heating in deep mines10.1016/j.applthermaleng.2017.01.116 ↗