高水压高应力岩石动态响应特性试验研究

doi:10.13722/j.cnki.jrme.2023.1004

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (1373 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Deep rock mass engineering is in high water pressure and high stress environment，its response characteristics are significantly influenced by the environmental conditions，which is an important basis for deep rock mass engineering blasting design and construction. In order to investigate the dynamic response characteristics of the rock under deep high water pressure environment，impact tests were carried out on red sandstone based on a self-developed high water pressure and high stress rock dynamic testing system，and 4 axial static stresses and 9 water pressure levels were set to simulate the occurrence environment of engineering rock mass. The effects of water pressure and axial static stress on the dynamic stress-strain curve and dynamic peak stress of rock were investigated by calculating dynamic stress and strain data of rock based on incident，reflected and transmitted waves. The pre-peak and post-peak energy conversion characteristics of stress-strain curves were considered comprehensively，and the water-inrush tendency index of rocks was defined by energy evolution parameters. The relationships between rock dynamic residual stress，residual strain，water inrush tendency index and wave impedance with water pressure were analyzed，the empirical models of dynamic peak stress strengthening coefficient，residual stress，residual strain，water inrush tendency index，wave impedance and water pressure，as well as dynamic peak stress and axial static stress were constructed. The influence mechanisms of high water pressure and high stress on the dynamic strength and deformation characteristics of rock were explored. The results show that the dynamic stress-strain curves of rock gradually change from type I to type II with the rise of water pressure. Under the same axial static stress，the dynamic peak stress strengthening coefficient，residual stress and wave impedance of the rock increase rapidly at first and then slowly with increasing water pressure，and the water inrush tendency index and residual strain decrease with the increase of water pressure. Under the same water pressure，the peak dynamic stress of the rock decreases as the axial static stress increases. High-pressure water has dual effects on rock dynamic strength，that is，the water wedge effect promotes crack propagation and reduces rock strength，while the Stefan effect and other viscous effects and external confining water hinder the destruction of pore structure and enhance the dynamic strength. The two effects play a game with each other and jointly affect the dynamic response characteristics of rock under deep high water pressure environment. The results of the study are favorable for blasting and excavation of engineering rock mass and stability analysis of surrounding rock under deep high water pressure environment.

Key words： rock mechanics high water pressure stress-strain curve strength and deformation energy evolution wave impedance

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	JIN Jiefang
	FANG Lixing
	WANG Yu
	XIONG Huiying
	XIAO Youfeng
	PENG Xiaowang

Cite this article:

JIN Jiefang,FANG Lixing,WANG Yu, et al. Experimental study on dynamic response characteristics of rocks under high water pressures and high stresses[J]. , 2024, 43(8): 1821-1838.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2023.1004 OR https://rockmech.whrsm.ac.cn/EN/Y2024/V43/I8/1821

[1] 谢和平，李存宝，高明忠，等. 深部原位岩石力学构想与初步探索[J]. 岩石力学与工程学报，2021，40(2)：217–232.(XIE Heping，LI Cunbao，GAO Mingzhong，et al. Conceptualization and preliminary research on deep in situ rock mechanics[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(2)：217–232.(in Chinese))
[2] 王朋朋，赵毅鑫，姜耀东，等. 邢东矿深部带压开采底板突水特征及控制技术[J]. 煤炭学报，2020，45(7)：2 444–2 454.(WANG Pengpeng，ZHAO Yixin，JIANG Yaodong，et al. Characteristics and control technology of water inrush from deep coal seam floor above confined aquifer in Xingdong Coal Mine[J]. Journal of China Coal Society，2020，45(7)：2 444–2 454.(in Chinese))
[3] 黄书岭，冯夏庭，周辉，等. 水压和应力耦合下脆性岩石蠕变与破坏时效机制研究[J]. 岩土力学，2010，31(11)：3 441–3 446. (HUANG Shuling，FENG Xiating，ZHOU Hui，et al. Study of aging failure mechanics and triaxial compression creep experiments with water pressure coupled stress of brittle rock[J]. Rock and Soil Mechanics，2010，31(11)：3 441–3 446.(in Chinese))
[4] 李术才，许振浩，黄鑫，等. 隧道突水突泥致灾构造分类、地质判识、孕灾模式与典型案例分析[J]. 岩石力学与工程学报，2018，37(5)：1 041–1 069.(LI Shucai，XU Zhenhao，HUANG Xin，et al. Classification，geological identification，hazard mode and typical case studies of hazard-causing structures for water and mud inrush in tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(5)：1 041–1 069.(in Chinese))
[5] 贾海梁，王婷，项伟，等. 含水率对泥质粉砂岩物理力学性质影响的规律与机制[J]. 岩石力学与工程学报，2018，37(7)：1 618–1 628.(JIA Hailiang，WANG Ting，XIANG Wei，et al. Influence of water content on the physical and mechanical behaviour of argillaceous siltstone and some microscopic explanations[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(7)：1 618–1 628.(in Chinese))
[6] 于超云，唐世斌，唐春安. 含水率对红砂岩瞬时和蠕变力学性质影响的试验研究[J]. 煤炭学报，2019，44(2)：473–481.(YU Chaoyun，TANG Shibin，TANG Chun?an. Experimental investigation on the effect of water content on the short-term and creep mechanical behaviors of red sandstone[J]. Journal of China Coal Society，2019，44(2)：473–481.(in Chinese))
[7] 王凯，蒋一峰，徐超. 不同含水率煤体单轴压缩力学特性及损伤统计模型研究[J]. 岩石力学与工程学报，2018，37(5)：1 070–   1 079.(WANG Kai，JIANG Yifeng，XU Chao. Mechanical properties and statistical damage model of coal with different moisture contents under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(5)：1 070–1 079.(in Chinese))
[8] 郭宏云，赵健，柳培玉. 深部软岩与水作用后的强度软化特性及化学分析[J]. 岩石力学与工程学报，2018，37(增1)：3 374–3 381. (GUO Hongyun，ZHAO Jian，LIU Peiyu. Experimental studies and chemical analysis of water on weakening behaviors of deep soft rock[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(Supp.1)：3 374–3 381.(in Chinese))
[9] CAI X，ZHOU Z L，DU X M. Water-induced variations in dynamic behavior and failure characteristics of sandstone subjected to simulated geo-stress[J]. International Journal of Rock Mechanics and Mining Sciences，2020，130：104339.
[10] 刘运思，何楚韶，傅鹤林，等. 冲击荷载下饱水板岩拉伸力学特性及能耗规律[J]. 岩石力学与工程学报，2020，39(11)：2 226–2 233. (LIU Yunsi，HE Chushao，FU Helin，et al. Study on tensile mechanical properties and energy consumption law of saturated slate under impact loads[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(11)：2 226–2 233.(in Chinese))
[11] ZHOU Z L，CAI X ，ZHAO Y ，et al. Strength characteristics of dry and saturated rock at different strain rates[J]. Transactions of Nonferrous Metals Society of China，2016，26(7)：1 919–1 925.
[12] WU W X，GONG F Q，QUAN J. Influence of water on rockburst of surrounding rock in deep circular tunnels under triaxial internal unloading conditions[J]. Tunnelling and Underground Space Technology incorporating Trenchless Technology Research，2023，138：105165.
[13] WANG K，FENG G R，BAI J，et al. Dynamic behaviour and failure mechanism of coal subjected to coupled water-static-dynamic loads[J]. Soil Dynamics and Earthquake Engineering，2022，153：107084.
[14] 金解放，孙俊涛，杨洪灏. 高水压对红砂岩动态强度和变形特性影响的试验研究[J]. 岩石力学与工程学报，2023，42(10)：2 372–    2 384.(JIN Jiefang，SUN Juntao，YANG Honghao. Experimental investigation of the influence of high water pressure on dynamic strength and deformation characteristics of red sandstone[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(10)：2 372–2 384.(in Chinese))
[15] 姜耀东，潘一山，姜福兴，等. 我国煤炭开采中的冲击地压机制和防治[J]. 煤炭学报，2014，39(2)：205–213.(JIANG Yaodong，PAN Yishan，JIANG Fuxing，et al. State of the art review on mechanism and prevention of coal bumps in China[J]. Journal of China Coal Society，2014，39(2)：205–213.(in Chinese))
[16] HOU P Y，CAI M. A modified Hoek-Brown model for determining plastic?strain?dependent post?peak strength of brittle rock[J]. Rock Mechanics and Rock Engineering，2023，56(3)：2 375–2 393.
[17] 李震，史文豪，高鑫，等. 基于煤岩冲击与大变形特征的统一脆延性指标研究[J]. 煤炭科学技术，2022，50(10)：19–27.(LI Zhen，SHI Wenhao，GAO Xin，et al. Study on unified brittle-ductility index based on burst tendency and large deformation of coal-rock[J]. Coal Science and Technology，2022，50(10)：19–27.(in Chinese))
[18] ZHOU Y X，XIA K W，LI X B，et al. Suggested methods for determining the dynamic strength parameters and mode-I fracture toughness of rock materials[J]. International Journal of Rock Mechanics and Mining Sciences，2012，49：105–112.
[19] 唐浩，李天斌，陈国庆，等. 水力作用下砂岩三轴卸荷试验及破裂特性研究[J]. 岩土工程学报，2015，37(3)：519–525.(TANG Hao，LI Tianbin，CHEN Guoqing，et al. Triaxial unloading tests on rupture characteristics of sandstone under hydro-mechanical coupling conditions[J]. Chinese Journal of Geotechnical Engineering，2015，37(3)：519–525.(in Chinese))
[20] 蔡美峰. 岩石力学与工程[M]. 2版. 北京：科学出版社，2013：100–101.(CAI Meifeng. Rock mechanics and engineering[M]. 2nd ed. Beijing：Science Press，2013：100–101.(in Chinese))
[21] 王文，李化敏，顾合龙. 三维动静组合加载含水煤样强度特征试验研究[J]. 岩石力学与工程学报，2017，36(10)：2 406–2 414. (WANG Wen，LI Huamin，GU Helong. Experimental study of strength characteristics of water-saturated coal specimens under 3D coupled static-dynamic loadings[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(10)：2 406–2 414.(in Chinese))
[22] 金解放，杨益，廖占象，等. 动荷载与地应力对岩石响应特性的影响试验研究[J]. 岩石力学与工程学报，2021，40(10)：1 990–    2 002.(JIN Jiefang，YANG Yi，LIAO Zhanxiang，et al. Effect of dynamic loads and geo-stresses on response characteristics of rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(10)：1 990–2 022.(in Chinese))
[23] 谢和平，鞠杨，黎立云. 基于能量耗散与释放原理的岩石强度与整体破坏准则[J]. 岩石力学与工程学报，2005，24(17)：3 003–    3 010.(XIE Heping，JU Yang，LI Liyun. Criteria for strength and structural failure of rocks based on energy dissipation and energy release principles[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(17)：3 003–3 010.(in Chinese))
[24] TARASOV B，POTVIN Y. Universal criteria for rock brittleness estimation under triaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences，2013，59：57–69.
[25] 窦林名，何江，巩思园，等. 采空区突水动力灾害的微震监测案例研究[J]. 中国矿业大学学报，2012，41(1)：20–25.(DOU Linming，HE Jiang，GONG Siyuan，et al. A case study of micro-seismic monitoring：goaf water-inrush dynamic hazards[J]. Journal of China University of Mining and Technology，2012，41(1)：20–25.(in Chinese))
[26] 金解放，李夕兵，殷志强，等. 循环冲击下波阻抗定义岩石损伤变量的研究[J]. 岩土力学，2011，32(5)：1 385–1 393.(JIN Jiefang，LI Xibing，YIN Zhiqiang，et al. A method for defining rock damage variable by wave impedance under cyclic impact loadings[J]. Rock and Soil Mechanics，2011，32(5)：1 385–1 393.(in Chinese))
[27] 王刚，李胜鹏，刘义鑫，等. 真三轴下注水条件对煤体超声波传播特性影响规律的研究[J]. 岩石力学与工程学报，2022，41(11)：2 225–2 239.(WANG Gang，LI Shengpeng，LIU Yixin，et al. Analysis of water injection volume of coal and study of ultrasonic propagation characteristics under true triaxial stress[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(11)：2 225–2 239.(in Chinese))
[28] 杨仁树，李炜煜，杨国梁，等. 炸药类型对富铁矿爆破效果影响的试验研究[J]. 爆炸与冲击，2020，40(6)：96–107.(YANG Renshu，LI Weiyu，YANG Guoliang，et al. Experimental study on the blasting effects of rich-iron ore with different explosives[J]. Explosion and Shock Waves，2020，40(6)：96–107.(in Chinese))