Theoretical Study of the Evolution Characteristics of the Plastic Deformation Zone of Type I–II Composite Fractured Rock under Osmotic Pressure
Source abstract
Abstract
The coupled seepage–stress action has a significant deterioration effect on the structural face of the hydraulic tunnel enclosure, which intensifies the shear rupture tendency of the deteriorated structural face of the rock mass. The plastic deformation of a typical I–II composite fissure was taken as the research object, the characteristics of the tip plastic zone of the composite fissure seepage rock were explored, and the influence law of osmotic pressure and fissure rock parameters (fissure dip angle, Poisson’s ratio, and fissure length) on the radius of the tip plastic zone was analyzed. Based on the Drucker–Prager yield criterion and the stress intensity factor of the composite fracture, the theoretical analytical formula of the fracture plastic zone radius under the action of high and low osmotic pressure was established, and the fracture rock plastic zone radius was significantly correlated with the fracture parameters. The radius of the plastic zone of fracture under low osmotic pressure evolves in a trend of decreasing–increasing–decreasing with the increase in fracture dip angle, and the peak radius of the plastic zone appears at 45°. Poisson’s ratio and fracture length have less influence on the radius of the plastic zone. The radius of the plastic zone of fracture under high osmotic pressure grows in an incremental nonlinear curve, and the peak radius of the plastic zone appears at 90°, being positively correlated with the length of fracture. This study can provide theoretical reference for the analysis of the stability of the surrounding rock in hydraulic tunnels.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Rock Mechanics and Modeling · Geotechnical and Geomechanical Engineering · Drilling and Well Engineering
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
School of Civil Engineering, Yancheng Institute of Technology, Yancheng 224051, China
Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering, Xi’an 710055, China
Funding
Innovation Capacity Support Plan of Shaanxi Province · Yancheng Institute of Technology · Open Fund Project of Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering
References (45)
Show source-provided references
1. Investigating the scale effects in strength of fractured rock mass10.1016/j.chaos.2008.09.005 ↗
2. Failure mechanism and infrared radiation characteristic of hard siltstone induced by stratification effect
3. Numerical determination of deformability and strength of 3D fractured rock mass10.1016/j.ijrmms.2018.07.015 ↗
4. Freeze-thaw damage evolution of fractured rock mass using nuclear magnetic resonance technology10.1016/j.coldregions.2019.102951 ↗
5. Failure mechanism of rock with pre-existing surface crack under cone penetration test
6. Failure mechanism of rock masses with complex geological conditions in a large underground cavern: A case study10.1016/j.soildyn.2023.108439 ↗
7. Numerical study on the influence of joint inclination on rock breaking characteristics of rock tunnel boring machine
8. Hydraulic and solute transport coupling model for fractured rock mass with discrete fracture network using computational method
9. Evaluation of rock-mass permeability tensor and prediction of tunnel inflows by means of geostructural surveys and finite element seepage analysis10.1016/j.enggeo.2008.05.002 ↗
10. Investigating the aging damage evolution characteristics of layered hard sandstone using digital image correlation10.1016/j.conbuildmat.2022.128838 ↗
11. Investigation of the microstructure damage and mechanical properties evolution of limestone subjected to high-pressure water10.1016/j.conbuildmat.2021.125871 ↗
12. Numerical investigation on the fatigue failure characteristics of water-bearing sandstone under cyclic loading10.1007/s11629-021-6914-0 ↗
13. A hybrid artificial bee colony algorithm and support vector machine for predicting blast-induced ground vibration10.1007/s11803-022-2125-0 ↗
14. Volumetric deformation and damage evolution of Tibet interbedded skarn under multistage constant-amplitude-cyclic loading10.1016/j.ijrmms.2022.105066 ↗
15. Determination of stiffness of circumferential yielding lining considering the shotcrete hardening property10.1007/s00603-022-03122-0 ↗
16. Analytical computation of support characteristic curve for circumferential yielding lining in tunnel design10.1016/j.jrmge.2021.06.016 ↗
17. Method for evaluating the equivalent thermal conductivity of a freezing rock mass containing systematic fractures10.1007/s00603-022-03038-9 ↗
18. Testing study on effects of chemical action of aqueous solution on crack propagation in rock
19. Rheological test and creep damage model of viscoelastic-plastic strain separation of rock
20. Analysis of saturated-unsaturated seepage in fissured expansive soil
21. Study on rock damage and acoustic emission based on ultrasonic velocity test of rock specimen under uniaxial compression
22. Mechanical properties and statistical damage model of coal with different moisture contents under uniaxial compression
23. Effect of water on mechanical behavior and acoustic emission response of sandstone during loading process: Phenomenon and mechanism10.1016/j.enggeo.2021.106386 ↗
24. Study on strength characteristics of interlayer rocks based on thermal–mechanical coupling10.1007/s10706-023-02491-9 ↗
25. Ultrasonic tests on schist with saturated fractures under uniaxial compression
26. Mechanical properties of limestone from Maixi tunnel under hydro-mechanical coupling10.1007/s12517-020-05373-z ↗
27. Investigation on strain characteristics and fatigue constitutive model of limestone under osmotic pressure and cyclic disturbance coupling10.1007/s12205-022-1416-3 ↗
28. Diffusion-hydraulic properties of grouting geological rough fractures with power-law slurry
29. Investigation of hydro-mechanical behaviour of excavation induced damage zone of callovo-oxfordian Claystone: Numerical Modeling and In-situ Experiment10.1007/s00603-022-02938-0 ↗
30. Influence of freeze–thaw cycles on mechanical properties of pervious concrete: From experimental studies to discrete element simulations10.1016/j.conbuildmat.2023.133988 ↗
31. FDEM numerical modeling of failure mechanisms of anisotropic rock masses around deep tunnels10.1016/j.compgeo.2021.104535 ↗
32. The excavation of a circular tunnel in a bedded argillaceous rock (Opalinus Clay): Short-term rock mass response and FDEM numerical analysis10.1016/j.tust.2014.09.014 ↗
33. Comparative study of scale effect in concrete fracturing via lattice discrete particle and finite discrete element models10.1016/j.engfailanal.2022.106062 ↗
34. Progressive highly stressed volume for size effect analysis10.1016/j.conbuildmat.2023.132600 ↗
35. Cheng, Y., Song, Z.P., Wu, F.H., Zhu, X.P., and Yuan, W. (2024). Investigating the mechanical deterioration effect of hard sandstone induced by layer structure under uniaxial compression. Buildings, 14.10.3390/buildings14010051 ↗
36. Weak current induced by coal deformation and fracture and its response to mine seismicity in a deep underground coal mine10.1016/j.enggeo.2023.107018 ↗
37. Influence of lithology and bedding orientation on failure behavior of “D” shaped tunnel10.1016/j.tafmec.2023.104219 ↗
38. Tunnelling performance prediction of cantilever boring machine in sedimentary hard-rock tunnel using deep belief network10.1007/s11629-023-7931-y ↗
39. Study on the time—Dependent interaction between surrounding rock and yielding supports in deep soft rock tunnels
40. Effect of compressible layer on time-dependent behaviour of soft-rock large deformation tunnels revealed by mathematical analytical method10.1016/j.apm.2023.10.021 ↗
41. The stress intensity factor of a finite-width plate with a mode-ⅰ center crack subjected to uniform stress on the crack surface near the crack tip
42. Fracture experiments on ordered multi-crack body in rock-like materials under uniaxial compression and numerical simulation of wing cracks
43. An experimental and numerical study of fracture coalescence in pre-cracked specimens under uniaxial compression10.1016/j.ijsolstr.2010.12.001 ↗
44. Fracture failure mechanism of rock with closed crack and judging criterion of seepage pressure under biaxial compression
45. Fracture test and analysis of horizontal fissure rock-like specimens influenced by apertures