Dynamic mechanical characteristics and failure mode of serpentine under a three-dimensional high static load and frequent dynamic disturbance
Autoři:
Chun Wang aff001; Lu-ping Cheng aff001; Cheng Wang aff001; Zhu-qiang Xiong aff001; Shi-ming Wei aff001
Působiště autorů:
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo Henan, China
aff001; State and Local Joint Engineering Laboratory for Gas Drainage & Ground Control of Deep Mines, Henan Polytechnic University, Jiaozuo, Henan, China
aff002; School of Resources and Safety Engineering, Central South University, Changsha, Hunan, China
aff003; The Collaborative Innovation Center of Coal Safety Production of Henan, Jiaozuo, Henan, China
aff004
Vyšlo v časopise:
PLoS ONE 14(9)
Kategorie:
Research Article
doi:
https://doi.org/10.1371/journal.pone.0222684
Souhrn
The improved split Hopkinson pressure bar (SHPB) was used to study the dynamic mechanical properties and failure characteristics of surrounding rock in deep rock mass engineering that is under high stress and affected by blasting excavation and other dynamic disturbances. In a three-dimensional high static load and frequent dynamic disturbance test, the preload high axial pressure and confining pressure are used to simulate the high crustal stress of deep rock, and the effect of small disturbances on the rock is simulated by the low impact load. The results show that there are two types of dynamic stress-strain curves of deep rock: an elastic-plastic curve and plastic-elastic-plastic curve. The curves consists of five parts: the compaction stage, micro-crack steady development stage, micro-crack unstable propagation stage, fatigue damage stage, and fatigue failure stage. Reductive phenomena of constringent strain after dynamic peak stress appear because of the different degrees of rock damage. Moreover, these phenomena include two conditions, namely, whether rebound occurs or not. The impact resistance of rock is strongest when the ratio of the confining pressure to axial pressure is optimal, and the dynamic average strength of rock and accumulative impact times decrease with the increase of the preloaded axial compression and increase with the increase of the preloaded confining pressure. Both the dynamic deformation modulus and dynamic peak stress decrease with the increase of the accumulative impact time, while the maximum strain and the dynamic peak strain increase. The corresponding rebound strain as a whole first increases and then decreases with the increasing impact times. For deep rock, tensile failure and single-bevel plane shear failure are the main failure modes, and pull-compression mixed friction failure is the auxiliary failure mode. Additionally, the lumpiness of broken rock decreases with the increase of the preloaded axial compression and increases with the increase of the preloaded confining pressure.
Klíčová slova:
Compression – Deformation – Engineering and technology – High pressure – Mechanical properties – Mechanical stress – Statics – Engineers
Zdroje
1. Zhang Y. T., Ding X. L., Huang S. L., Qin Y., Li P., Li Y. J., “Field measurement and numerical simulation of excavation damaged zone in a 2000m-deep cavern,” Geomech. Eng., vol. 16, no. 4, pp. 399–413, Nov. 2018.
2. He M. C., Xie H. P., Peng S. P., Jiang Y. D., “Study on Rock Mechanics in Deep Mining Engineering,” Chin. J. Roc. Mech. Eng., vol. 24, no. 16, pp. 2083–2813, Aug. 2005.
3. Ahmed M. F., Waqas U., Arshad M., Rogers J. D., “Effect of heat treatment on dynamic properties of selected rock types taken from the Salt Range in Pakistan,” Arab. J. Geosci., vol. 11, no. 22, pp. 1–13, Nov. 2018.
4. Qian Q. H., “Challenges faced by underground projects construction safety and countermeasures,” Chin. J. Roc. Mech. Eng., vol. 31, no. 10, pp. 1945–1956, Nov. 2012.
5. Ali K., Sainsbury B. A., “Review of published rockburst events and their contributing factors,” Eng. Geol., vol. 246, pp. 361–373, Nov. 2018.
6. Sunita M., Tanusree C., Vasant M., Josh L., Brady B., “High Strain-Rate Characterization of Deccan Trap Rocks Using SHPB Device,” J. Mater. Civ. Eng., vol. 30, no. 5, pp. 1–9, May. 2018.
7. Gong F. Q., Si X. F., Li X. B., Wang S. Y., “Dynamic triaxial compression tests on sandstone at high strain rates and low confining pressures with split Hopkinson pressure bar,” Int. J. Rock mench. Min., vol. 113, pp. 211–219, Jan. 2019.
8. Akx M., Tanusree C., Rao K. S., “Strain rate effect on the mechanical behavior of basalt: Observations from static and dynamic tests,” Thin. Wall. Struct., vol. 126, pp.127–137, May. 2018.
9. Wong L. N. Y., H Li Z., Kang H. M., Teh C. I., “Dynamic Loading of Carrara Marble in a Heated State,” Rock Mech. Rock Eng., vol. 50, no. 6, pp. 1487–1505, Jun. 2017.
10. Zhang R. R, Jing L. W, Ma Q. Y., “Experimental Study on Thermal Damage and Energy Evolution of Sandstone after High Temperature Treatment,” Shock Vib., vol. 19, no. 8, pp. 1–9, Jun. 2018.
11. Fan L. F., Wu Z. J., Wan Z., Gao J. W., “Experimental investigation of thermal effects on dynamic behavior of granite. Applied Thermal Engineering,” Appl. Therm. Eng., vol. 125, pp. 94–103, Oct. 2017.
12. Wang P., Xu J. Y., Liu S. H., Wang H. Y., “Dynamic mechanical properties and deterioration of red-sandstone subjected to repeated thermal shocks,” Eng. Geol., vol. 212, pp. 44–52, Sep. 2016.
13. Wang P., Yin T. B., Li X. B., Zhang S. S., Bai L., “Dynamic Properties of Thermally Treated Granite Subjected to Cyclic Impact Loading,” Rock Mech Rock Eng., vol. 52, no. 4, pp. 991–1010, Oct. 2019.
14. Yin T. B., Bai L., Li X., Li X. B., Zhang S. S., “Effect of thermal treatment on the mode I fracture toughness of granite under dynamic and static coupling load,” Eng Frac Mech., vol. 199, pp. 143–158, Aug. 2018.
15. Yin T. B., Zhang S. S., Li X. B., Bai L., “A numerical estimate method of dynamic fracture initiation toughness of rock under high temperature,” Engineering Fracture Mechanics, vol. 204, pp. 87–102, Dec. 2018.
16. Gong F. Q., Li X. B., Liu X. L., Zhao J., “Experimental study of dynamic characteristics of sandstone under one-dimensional coupled static and dynamic loads s,” Chin. J. Roc. Mech. Eng., vol. 29, no. 10, pp. 2076–2085, Oct. 2010.
17. Zhu W. C., Bai Y., Li X. B., Niu L. L., “Numerical simulation on rock failure under combined static and dynamic loading during SHPB tests,” Int. J. Impact. Eng., vol. 49, pp. 142–157, Nov. 2012.
18. Liu S. H., Qin Z. h., Jin J. F., “Experimental study of dynamic failure characteristics of coal-rock compound under one-dimensional static and dynamic loads,” Chin. J. Roc. Mech. Eng., vol. 33, no. 10, pp. 2064–2075, Oct. 2014.
19. Bauer S. J., Song B., Brett S. B., “Dynamic compressive strength of rock salts,” Int. J. Rock Mech. Min., vol. 11, pp. 112–120, Jan. 2019.
20. Ye Z. Y., Li X. B., Zhou Z. L., Yin T. B., Liu L. X., “Static-dynamic coupling strength and deformation characteristics of rock under triaxial compression,” Roc. Soi. Mech., vol. 30, no. 7, pp. 1981–1986, Jul. 2009.
21. Zhou Z. H., Zhang Y. Q., Yang A. G., Wang C., “Experimental study on mechanical characteristics of dolomite under three-dimensional coupled static-dynamic loading,” J. Chin. Co. Soc., vol. 40, no. 5, pp. 1030–1036, May. 2015.
22. Li X. B., Tao M., Wu C. Q., Du K., Wu Q. H., “Spalling strength of rock under different static pre-confining pressures,” Int. J. Impact. Eng., vol. 99, pp. 69–74, Jan. 2017.
23. Wang W., Wang Hg, Li D. Y., Li H. M., Liu Z. M., “Strength and Failure Characteristics of Natural and Water-Saturated Coal Specimens under Static and Dynamic Loads,” Shock. Vib., pp. 1–15, Jan. 2018.
24. Liu Y., Liu C. B., “Effect of axial static stress on mechanical properties of post-peak cracked sandstone under impact loading,” J. Chin. Co. Soc., vol. 43, no. 5, pp. 1281–1288, May. 2018.
25. Zhou Z. L., Zhao Y., Jiang Y. H., Zou Y., Cai X., Li D. Y., “Dynamic behavior of rock during its post failure stage in SHPB tests,” Trans. Nonferrous Met. Soc., vol. 27, no. 1, pp. 184–196, Jan. 2017.
26. Xing H. Z., Zhang Q. B., Ruan D., Dehkhoda S., Lu G. X., Zhao J., “Full-field measurement and fracture characterisations of rocks under dynamic loads using high-speed three-dimensional digital image correlation,” Int. J. Impact. Eng., vol. 113, pp. 61–72, Mar. 2018.
27. Zhang Q. B., Zhao J., “Determination of mechanical properties and full-field strain measurements of rock material under dynamic loads,” Int. J. Rock mench. Min., vol. 60, pp. 423–439, Jun. 2013.
28. Xie G., Yin Z.Q., Wang L., Hu Z., Zhu C., “Effects of gas pressure on the failure characteristics of coal,” Rock Mech Rock Eng.,”vol. 50, no. 7, pp. 1711–1723, Jul. 2017.
29. Yin Z.Q., Zhuo Z., Ma H. F., Hu Z. X., Tang M. Y., “Experimental Study on the Static and Dynamic Mechanical Properties of Coal under Different Gas Pressures,” J. Eng Sci Tech Re., vol. 11, no. 4, pp. 61–68, Apr.2018.
30. Yang Z. G., Yu R. C., Guo R., Wang L. H., “Research of mining based on microseismic monitoring technology in high-stress area,” Chin. J. Roc. Mech. Eng., vol. 28, no. 2, pp. 3632–3638, Sep. 2009.
31. Wu A. X., Wang Y. M., Hu G. B., “Air Shock Wave Induced by Roof Falling in a Large Scale in Ultra-Huge Mined-Area,” J. Chin. Univ. Min Tech., vol. 36, no. 4, pp. 473–477, Jul. 2007.
32. Liu X. M., Zhao J. J., Wang Y. M., Peng P. A., “Automatic Picking of Microseismic Events P-wave Arrivals Based on Improved Method of STA/LTA,” J. North. Univ. Nat. Sci., vol. 38, no. 5, pp. 740–745, May. 2017.
33. Yang Z. G., Yu R. C., Guo R., Yang C. X., Wang L. H., “Application of microseismic monitoring to deep mines,” Chin. J. Roc. Mech. Eng., vol. 27, no. 5, pp. 1066–1073, May. 2008.
34. Li X. B., Zhou Z. L., Lok T. S., Liang H., Yin T. B., “Innovative testing technique of rock subjected to coupled static and dynamic loads,” Int. J. Rock mench. Min., vol. 45, no. 5, pp. 739–748, Jul. 2008.
35. Li X. B., Zhou Z. L., Wang W. H., “Construction of ideal striker for SHPB device based on FEM and neural network,” Chin. J. Roc. Mech. Eng., vol. 24, no. 5, pp. 4215–4218, Dec. 2005.
36. Li X. B., Zhou Z. L., Zhao Y. S., “Approach to minish scattering of results for split Hopkinson pressure bar test,” J. Cent. South Univ. Tech., vol. 14, no. 3, pp. 404–407, Jun. 2007.
37. Li X. B., Lok T. S., Zhao J., “Oscillation elimination in the Hopkinson bar apparatus and resultant complete dynamic stress-strain curves for rocks,” Int. J. Rock mench. Min., vol. 37, no. 7, pp. 1055–1060, Mar. 2000.
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