Experimental Study on a Granular Material-Filled Lining in a High Ground-Stress Soft-Rock Tunnel
Source abstract
Abstract
For high ground-stress soft-rock tunnels surrounding rock with large deformation, rapid deformation rate, a long creep time, and a high likelihood of to causing initial and secondary lining damage, the yielding and relief-pressure support technology of a lining filled with a granular material is proposed. A layer of granular material is placed at the reserved deformation layer of the tunnel to provide the surrounding rock with a certain amount of deformation space. Confined compression tests were undertaken to study the laws of compressive strain, load reduction law, and horizontal force variation of different granular materials under different rock stresses. The research showed that the compressibility and load reduction performance of 8 mm soil was optimal. Its maximum compressive strain reached 47.6%, and the total load reduction rate reached 71%. The yielding- and relief-pressure effects of the granular sand-filled lining support were analyzed from the angles of deflection, pressure, and energy. The results show that the highest reduction rate of deflection was 36.7%, and the greatest load reduction rate of pressure was 78%. The grainy filling material can remove part of the load imposed by the surrounding rock on the support structure of the secondary lining through yielding pressure and relief pressure, which dramatically reduces the damage to the secondary lining from the surrounding rock. The research results have specific reference significance for designing and constructing tunnel support structures.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Geotechnical Engineering and Analysis · Geotechnical Engineering and Underground Structures · Rock Mechanics and Modeling
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Civil Engineering & Architecture, China Three Gorges University, Yichang 443002, China
Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang 443002, China
Funding
National Natural Science Foundation of China · Key Projects of National Natural Science Foundation of China
References (48)
Show source-provided references
1. High-prestressed robust support system and its application in deep roadway
2. Research on deformation control technology of soft rock tunnel in strong earthquake zone based on support parameter optimization
3. The support mechanism of deep soft rock roadway reinforced by shotcrete and bolt injection and its application
4. Comprehensive monitoring and measurement analysis of the F4 fault section of Wushaoling Tunnel
5. Construction control technology of soft rock with high in-situ stress and large deformation in the maoyushan tunnel
6. Characteristics and mechanism analysis of large deformation of Muzhailing tunnel
7. Develop and apply of an energy-limited support structure with limited resistance to adapt to large tunnel deformation
8. Principles of Compression-type Deformation and Extensibility Support for the tunnel in soft surrounding Rock with high ground Stress
9. Model test study on supporting structure type of segment-based lining combined with ceramsite compressible layer
10. Interaction model between supporting structure and surrounding rock of segment lining and ceramsite compressible layer
11. Yang, F. (2007). Research on Deformation and Failure Character and Yielding Support Mechanism in High Stress Soft Rock Roadway. [Ph.D. Thesis, China University of Mining and Technology].
12. Progressive failure process of secondary lining of a tunnel under creep effect of surrounding rock10.1016/j.tust.2019.04.024 ↗
13. Transversely isotropic creep behavior of phyllite and its influence on the long-term safety of the secondary lining of tunnels10.1016/j.enggeo.2020.105834 ↗
14. Study on the damage evolution in secondary tunnel lining under the combined actions of corrosion degradation of preliminary support and creep deformation of surrounding rock10.1016/j.trgeo.2020.100501 ↗
15. Overcoming squeezing in the Yacambú-Quibor tunnel, Venezuela10.1007/s00603-009-0175-5 ↗
16. Dealing with squeezing conditions in Alpine tunnels10.1007/BF01032651 ↗
17. Anagnostou, G., and Cantieni, L. (2007, January 9–13). Design and analysis of yielding support in squeezing ground. Proceedings of the 11th ISRM International Congress of Rock Mechanics, Lisbon, Portugal.
18. Discussion on applying yielding support technology for large deformation of soft-rock Tunnel10.1061/JHTRCQ.0000459 ↗
19. Schubert, W. (July, January 29). Design of ductile tunnel linings. Proceedings of the 42nd US Rock Mechanics Symposium (USRMS), San Francisco, CA, USA.
20. Further development of yielding elements and connecting elements for shotcrete10.1002/geot.201800038 ↗
21. Sun, J. (1996). Theory and Practice of Underground Engineering Design, Shanghai Science and Technology Press.
22. Varden, R., Lachenicht, R., and Player, J. (2008, January 14–16). Development and Implementation of the Garford Dynamic Bolt at the Kanowna Belle Mine. Proceedings of the Tenth AusIMM Underground Operators’ Conference 2008—“Boom and Beyond” Proceedings, Launceston, TAS, Australian.
23. Mechanical characteristics and engineering application of rock bolts with constant resistance and large deformation
24. Experimental study on applying compression bolt to support large deformation tunnel
25. Experimental study on bearing characteristics of U-shaped steel closed definable steel frame
26. Performance of a new yielding rock bolt under pull and shear loading conditions10.1007/s00603-019-01779-8 ↗
27. Zhang, C., Lv, H., Liu, X., Zhou, H., Gao, Y., and Yan, D. (2020). Study the working mechanism of a new type of constant resistance pressure relief device in a tunnel. Rock Soil Mech., 1–9.
28. Study the Influence of foamed concrete Reserved deformation layer the on long-term stability of Deep buried soft Rock Tunnel
29. Analysis of the behavior of a yield-control support system in squeezing rock10.1016/j.tust.2010.08.001 ↗
30. Research on cushion compression support design considering the strength aging weakening of soft rock
31. A solution for squeezing deformation control in tunnels using foamed concrete: A review10.1016/j.conbuildmat.2020.119539 ↗
32. Study on floor heave failure mechanism and supporting technology of large deformation roadway in soft rock
33. Numerical simulation of the effect of tunnel design parameters on the surrounding rock stability
34. Numerical simulation of the influence of tunnel lining on the surrounding rock displacement field in weakly cohesive soils
35. Numerical simulation study on the stability of surrounding rock and optimate design of supporting structure for shield tunnel10.1155/2020/8835305 ↗
36. Numerical simulation of deformation and failure mechanism of excavation damaged zone under different tunnel lining conditions
37. Experimental investigation on the application of cushion layer for deformation control between secondary lining and surrounding rock in underground engineering
38. Application of nonlinear compressive stress-strain relationship for compacted loess in foundation settlement calculation
39. Measurement and Analysis of the static friction Coefficient at the interface between Particulate matter and Solids
40. Application of M. M. Promojiyfakonov theory to solution of distance between anti-slide piles
41. Chang, B. (1998). Proceedings of the Landslides (Volume Thirteen), China Railway Press.
42. Calculation of soil arch effect between piles and analysis of pile spacing in clayey soil
43. Research the ring pressure support mechanism of large deformation in soft rock tunnels
44. Effects of loading rate on strength and deformation characteristics of gypsum mixed sand10.1051/e3sconf/20199205008 ↗
45. Experimental study on hardening characteristics and loading rate dependent mechanical behaviour of gypsum mixed sand10.1016/j.conbuildmat.2020.119992 ↗
46. Experimental study on the mechanical behaviour of bounded geomaterials under creep and cyclic loading considering effects of instantaneous strain rates10.1016/j.enggeo.2020.105774 ↗
47. Evaluation of time-dependent behavior of soils10.1061/(ASCE)1532-3641(2004)4:3(137) ↗
48. Rate-dependent behaviour of undisturbed gravelly soil10.1016/j.sandf.2016.04.018 ↗