Research on Mechanical Properties and Energy Evolution Laws of Sandstone with Two Non-Coplanar Fissures

ZHENG Yuanlong; XIAO Taoli; SHE Haicheng; ZHAO Yunfeng; YUAN Hao

doi:10.3724/j.gyjzG23032904

Volume 55 Issue 5

May 2025

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2025 > 55(5): 239-247

ZHENG Yuanlong, XIAO Taoli, SHE Haicheng, ZHAO Yunfeng, YUAN Hao. Research on Mechanical Properties and Energy Evolution Laws of Sandstone with Two Non-Coplanar Fissures[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(5): 239-247. doi: 10.3724/j.gyjzG23032904

Citation:

ZHENG Yuanlong, XIAO Taoli, SHE Haicheng, ZHAO Yunfeng, YUAN Hao. Research on Mechanical Properties and Energy Evolution Laws of Sandstone with Two Non-Coplanar Fissures[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(5): 239-247. doi: 10.3724/j.gyjzG23032904

Citation:

ZHENG Yuanlong, XIAO Taoli, SHE Haicheng, ZHAO Yunfeng, YUAN Hao. Research on Mechanical Properties and Energy Evolution Laws of Sandstone with Two Non-Coplanar Fissures[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(5): 239-247. doi: 10.3724/j.gyjzG23032904

PDF( 1998 KB)

Research on Mechanical Properties and Energy Evolution Laws of Sandstone with Two Non-Coplanar Fissures

doi: 10.3724/j.gyjzG23032904

1. School of Urban Construction, Yangtze University, Jingzhou 434023, China;
2. Zhuhai Construction Engineering Holding Group Co., Ltd., Zhuhai 519000, China;
3. Key Laboratory of Well Stability and Fluid & Rock Mechanics in Oil and Gas Reservoir of Shaanxi Province, Xi'an 710065, China

Received Date: 2023-03-29
Available Online: 2025-07-15

Abstract

Abstract

Taking sandstone-like samples containing two non-coplanar fissures as the research object， uniaxial compression tests and PFC^2D numerical simulations were carried out to study the mechanical properties and energy evolution laws of rock specimens under different fissure dip angles α. The results showed that as the fissure dip angle increased， the crack initiation， damage， and peak stress of the sample first decreased and then increased， while the crack fracture zone decreased. By analyzing the internal relationship between the number of microcracks and energy during the loading process of the sample， it was revealed that the failure of the sample was a gradual failure process of bearing capacity. Both the number of microcracks and the energy of the sample first decreased and then increased with the increase of fissure dip angle. The elastic energy dissipation ratio K of rock samples was introduced， which confirmed that the mutability of K could be used as one of the characteristic parameters of rock instability and failure， and the brittleness index correction coefficient of rock specimens could reflect the brittle failure characteristics and energy release characteristics of rock samples.
- two non-coplanar fissures,
- fissure dip angle,
- energy evolution,
- PFC^2D,
- elastic energy-dissipation ratio

FullText(HTML)

References(23)

References

[1]	刘泉声，魏莱，刘学伟，等. 基于Griffith强度理论的岩石裂纹起裂经验预测方法研究［J］. 岩石力学与工程学报，2017，36（7）：1561-1569.
[2]	熊自明，卢浩，王明洋，等. 我国大型岩土工程施工安全风险管理研究进展［J］. 岩土力学，2018，39（10）：3703-3716.
[3]	李欣慰，姚直书，黄献文，等. 循环加卸载下砂岩变形破坏特征与能量演化研究［J］. 岩土力学，2021，42（6）：1693-1704.
[4]	肖桃李，何祥锋，汪宗华，等. 单轴压缩下单裂隙类岩石强度变形特性分析［J］. 长江大学学报（自然科学版），2018，15（1）：64-67，8．
[5]	刘享华，张科，吴文远. 裂隙砂岩破坏过程中的能量耗散与破碎分形特征研究［J］. 重庆大学学报，2022，45（2）：41-51.
[6]	张杰，席迅，郭奇峰，等. 含预制裂隙花岗岩破坏的细观多相颗粒流模拟［J］. 华中科技大学学报（自然科学版），2021，49（4）：79-85.
[7]	JIANG N，LYU K，GAO Z，et al. Experimental study on mechanical properties of single fracture-hole red sandstone［J/OL］. Frontiers in Earth Science，2022，10［ 2023-03-29］. https：//doi.org/10.3389/feart.2022.1083689.
[8]	孙浩程，陈有亮，王苏然，等. 含尖端相交裂隙岩石的破裂特征［J］. 工业建筑，2019，49（12）：119-125，137.
[9]	YUAN H，XIAO T，SHE H，et al. Mechanical properties and failure law of composite rock containing two coplanar fractures［J/OL］. Frontiers in Earth Science，2022，10［ 2023-03-29］. https：//doi.org/10.3389/feart.2022.1007439.
[10]	潘翔. 共面断续裂隙岩石单轴压缩特征的颗粒流模拟［J］. 地下空间与工程学报，2017，13（4）：892-898.
[11]	范祥，曹平. 基于PFC^3D单轴压缩下含2条裂隙试样力学行为的数值分析［J］．中南大学学报（自然科学版），2015，46（7 ）：2635-2642．
[12]	YANG S Q，TIAN W L，HUANG Y H，et al. An experimental and numerical study on cracking behavior of brittle sandstone containing two non-coplanar fissures under uniaxial compression［J］. Rock Mechanics and Rock Engineering，2016，49（4）：1497-1515.
[13]	TIAN W L，YANG S Q，XIE L X，et al. Cracking behavior of three types granite with different grain size containing two non-coplanar fissures under uniaxial compression［J］. Archives of Civil and Mechanical Engineering，2018，18（4）：1580-1596.
[14]	CHEN M，JING H，MA X，et al. Fracture evolution characteristics of sandstone containing double fissures and a single circular hole under uniaxial compression［J］. International Journal of Mining Science and Technology，2017，27（3）：499-505.
[15]	ZHOU X P，WANG Y T，ZHANG J Z，et al. Fracturing behavior study of three-flawed specimens by uniaxial compression and 3D digital image correlation：sensitivity to brittleness［J］. Rock Mechanics and Rock Engineering，2019，52：691-718.
[16]	李国庆，马海春，钱家忠，等. 含有不同裂纹数量的岩石破裂试验和模拟［J］. 工业建筑，2021，51（9）：181-187.
[17]	王桂林，张亮，许明，等. 单轴压缩下非贯通节理岩体损伤破坏能量演化机制研究［J］. 岩土工程学报，2019，41（4）：639-647.
[18]	陈鹏宇. 岩石颗粒流模型单轴压缩的加载速率效应研究［J］. 地下空间与工程学报，2018，14（3）：635-642.
[19]	FARMERI W. Engineering properties of rocks［M］. London：Chapman and Hall，1983.
[20]	NICKSIAR M，MARTIN C D. Evaluation of methods for determining crack initiation in compression tests on low-porosity rocks［J］. Rock Mechanics and Rock Engineering，2012，45：607-617.
[21]	张萍，杨春和，汪虎，等. 页岩单轴压缩应力-应变特征及能量各向异性［J］. 岩土力学，2018，39（6）：2106-2114.
[22]	李子运，吴光，黄天柱，等. 三轴循环荷载作用下页岩能量演化规律及强度失效判据研究［J］. 岩石力学与工程学报，2018，37（3）：662-670.
[23]	陈子全，何川，吴迪，等. 深埋碳质千枚岩力学特性及其能量损伤演化机制［J］. 岩土力学，2018，39（2）：445-456.