不同岩石强度对岩–充–岩组合体单轴受压承载特征影响研究

doi:10.3724/1000-6915.jrme.2024.0759

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (2661 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为研究顶、底板岩石强度对岩石与充填体形成的组合体力学性能的影响，开展顶、底板岩石强度相同及不同条件下岩石–充填体–岩石(岩–充–岩)组合体的单轴压缩试验，分析组合体的破坏形态、应力–应变特征、弹性模量、强度及声发射特性等规律。研究结果表明：在充填体强度低于顶、底板岩石强度条件下，岩–充–岩组合体的破坏主要由充填体失稳导致，当顶、底板岩石强度较低时，顶板岩石与充填体整体发生劈裂破坏，底板岩石未发生破坏，顶板岩石强度增大后充填体发生明显剪切破坏，两端岩石完整性均较好。当顶、底板岩石强度相同时，随着岩石强度增大，组合体的弹性模量及抗压强度均不断增大；当顶、底板岩石强度不同时，组合体的弹性模量及抗压强度在顶板强度不变时随着底板强度增大呈现先增大后减小的趋势，而底板强度不变条件下二者随着顶板强度增大呈增长趋势。岩–充–岩组合体在加载过程中声发射响应明显，随着岩石强度的增大，组合体在峰值应力附近的声发射峰值计数随岩石强度增大而不断增长，试件的累计振铃计数曲线呈现出快速增长–平稳增长–快速增长的趋势。构建不同顶、底板条件下组合体的能量运移失稳模型，揭示组合体在加载过程中的能量积聚与分布规律。研究结果可为结构充填开采条件下顶、底板岩石与充填体的协同承载力学特征的探究提供理论参考。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	史昀辑1
	郭育霞1
	冯国瑞1
	白晨阳1
	张桂墉1
	冉洪宇2
	万颖1
	孙中光3

关键词 ：岩石力学, 充填开采, 岩石强度, 破坏形态, 应力&ndash, 应变曲线, 声发射

Abstract：In order to study the impact of roof and floor rock mass strength on the overall mechanical properties of rock and backfill body，the uniaxial compression tests were conducted on the rock-backfill body-rock combination under conditions of both uniform and different strengths of the roof and floor. The study focused on the failure modes，stress-strain curves，uniaxial compression strengths，and acoustic emission characteristics of different combinations under uniaxial compression conditions. The results show that when the strength of the backfill body is lower than that of the roof and floor rocks，the failure of the combination is primarily caused by the instability of the backfill body. When the strengths of the roof and floor rock are low，splitting damage occurs in both the roof rock and the backfill body. As the strength of roof and floor rocks increases，the backfill body exhibits obvious shear damage while the ends of the rock remain relatively intact. When the strength of the roof and floor rock are identical，the elastic modulus and peak strength of the combination tend to increase with the increase of rock strength. Conversely，when the strengths of the roof and floor rocks are different，the elastic modulus and peak strength of the combination initially increase and then decrease as the strength of the floor rock increases under the condition that the strength of roof rock remains constant. In contrast，when the floor rock strength is held constant，both of them show an increasing trend with the increase of the roof rock strength. The rock- backfill body-rock combination exhibits an obvious acoustic emission response during the loading process，with the acoustic emission ringing count of the combination at the peak strength continuously increases with the increase of rock strength. The cumulative ringing count curve of the specimens presents a trend of rapid growth-stable growth-rapid growth. The energy migration instability model of the combination under different roof and floor conditions is developed，which reveals the energy accumulation and distribution law of the combination during the loading process. These findings provide theoretical insights for understanding the collaborative bearing mechanical characteristics of the roof and floor rocks and backfill body under the condition of constructional backfill mining.

Key words： rock mechanics backfill mining rock strength failure mode stress-strain curve acoustic emission

引用本文:

史昀辑1，郭育霞1，冯国瑞1，白晨阳1，张桂墉1，冉洪宇2，万颖1，孙中光3. 不同岩石强度对岩–充–岩组合体单轴受压承载特征影响研究[J]. 岩石力学与工程学报, 2025, 44(5): 1326-1339.
SHI Yunji1，GUO Yuxia1，FENG Guorui1，BAI Chenyang1，ZHANG Guiyong1，RAN Hongyu2，WAN Ying1，SUN Zhongguang3. Effect of different rock strength on the uniaxial compression bearing characteristics of rock-backfill body-rock combination. , 2025, 44(5): 1326-1339.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.3724/1000-6915.jrme.2024.0759 或 https://rockmech.whrsm.ac.cn/CN/Y2025/V44/I5/1326

[1]	冯国瑞，杜献杰，郭育霞，等. 结构充填开采基础理论与地下空间利用构想[J]. 煤炭学报，2019，44(1)：74-84.(FENG Guorui，DU Xianjie，GUO Yuxia，et al. Basic theory of constructional backfill mining and the underground space utilization concept[J]. Journal of China Coal Society，2019，44(1)：74-84.(in Chinese))
[2]	左建平，陈岩，宋洪强. 深部煤岩组合体破坏行为与非线性模型研究进展[J]. 中南大学学报：自然科学版，2021，52(8)：2 510- 2 521.(ZUO Jianping，CHEN Yan，SONG Hongqiang. Study progress of failure behaviors and nonlinear model of deep coal-rock combined body[J]. Journal of Central South University：Science and Technology，2021，52(8)：2 510-2 521.(in Chinese))
[3]	左建平，宋洪强. 煤岩组合体的能量演化规律及差能失稳模型[J].煤炭学报，2022，47(8)：3 037-3 051.(ZUO Jianping，SONG Hongqiang. Energy evolution law and different energy instability model of coal-rock combination body[J]. Journal of China Coal Society，2022，47(8)：3 037-3 051.(in Chinese))
[4]	陈岩，左建平，宋洪强，等. 煤岩组合体循环加卸载变形及裂纹演化规律研究[J]. 采矿与安全工程学报，2018，35(4)：826-833. (CHEN Yan，ZUO Jianping，SONG Hongqiang，et al. Deformation and crack evolution of coal-rock combined body under cyclic loading-unloading effects[J]. Journal of Mining and Safety Engineering，2018，35(4)：826-833.(in Chinese))
[5]	宋洪强，左建平，陈岩，等. 煤岩组合体峰后应力-应变关系模型及脆性特征[J]. 采矿与安全工程学报，2018，35(5)：1 063-1 070. (SONG Hongqiang，ZUO Jianping，CHEN Yan，et al. Post-peak stress-strain relationship model and brittle characteristics of coal-rock combined body[J]. Journal of Mining and Safety Engineering，2018，35(5)：1 063-1 070.(in Chinese))
[6]	姚文杰，刘学伟，刘滨，等. 煤-过渡层-岩组合体物理力学特征试验及数值模拟研究[J]. 岩石力学与工程学报，2024，43(1)：184-205.(YAO Wenjie，LIU Xuewei，LIU Bin，et al. Experimental and numerical simulation study on mechanical properties of coaltransition layer-rock composite structures[J]. Chinese Journal of Rock Mechanics and Engineering，2024，43(1)：184-205.(in Chinese))
[7]	樊玉峰，肖晓春，丁鑫，等. 岩煤接触面力学性质对组合煤岩力学行为影响机制[J]. 煤炭学报，2023，48(4)：1 487-1 501.(FAN Yufeng，XIAO Xiaochun，DING Xin，et al. Influence mechanism of contact surface mechanical properties on mechanical behavior of coal rock combination[J]. Journal of China Coal Society，2023，48(4)： 1 487-1 501.(in Chinese))
[8]	SONG H Q，ZUO J P，LIU H Y，et al. The strength characteristics and progressive failure mechanism of soft rock-coal combination samples with consideration given to interface effects[J]. International Journal of Rock Mechanics and Mining Sciences，2021，138：104 593.
[9]	CHAI Y J，DOU L M，CAI W，et al. Experimental investigation into damage and failure process of coal-rock composite structures with different roof lithologies under mining-induced stress loading[J]. International Journal of Rock Mechanics and Mining Sciences，2023，170：105 479.
[10]	HE Y C，ZHAO P X，LI S G，et al. Mechanical properties and energy dissipation characteristics of coal-rock-like composite materials subjected to different rock-coal strength ratios[J]. Natural Resources Research，2021，30(3)：2 179-2 193.
[11]	刘杰，王恩元，宋大钊，等. 岩石强度对于组合试样力学行为及声发射特性的影响[J]. 煤炭学报，2014，39(4)：685-691.(LIU Jie，WANG Enyuan，SONG Dazhao，et al. Effects of rock strength on mechanical behavior and acoustic emission characteristics of samples composed of coal and rock[J]. Journal of China Coal Society，2014，39(4)：685-691.(in Chinese))
[12]	杨磊，高富强，王晓卿. 不同强度比组合煤岩的力学响应与能量分区演化规律[J]. 岩石力学与工程学报，2020，39(增2)：3 297-3 305.(YANG Lei，GAO Fuqiang，WANG Xiaoqing. Mechanical response and energy partition evolution of coal-rock combinations with different strength ratios[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(Supp.2)：3 297-3 305.(in Chinese))
[13]	MA Q，TAN Y L，LIU X S，et al. Effect of coal thicknesses on energy evolution characteristics of roof rock-coal-floor rock sandwich composite structure and its damage constitutive model[J]. Composites Part B，2020，198：108 086.
[14]	陈光波，秦忠诚，张国华，等. 受载煤岩组合体破坏前能量分布规律[J]. 岩土力学，2020，41(6)：2 021-2 033.(CHEN Guangbo，QIN Zhongcheng，ZHANG Guohua，et al. Law of energy distribution before failure of a loaded coal-rock combined body[J]. Rock and Soil Mechanics，2020，41(6)：2 021-2 033.(in Chinese))
[15]	张泽天，刘建锋，王璐，等. 组合方式对煤岩组合体力学特性和破坏特征影响的试验研究[J]. 煤炭学报，2012，37(10)：1 677- 1 681.(ZHANG Zetian，LIU Jianfeng，WANG Lu，et al. Effects of combination mode on mechanical properties and failure characteristics of the coal-rock combinations[J]. Journal of China Coal Society，2012，37(10)：1 677-1 681.(in Chinese))
[16]	余伟健，潘豹，李可，等. 岩-煤-岩组合体力学特性及裂隙演化规律[J]. 煤炭学报，2022，47(3)：1 155-1 167.(YU Weijian，PAN Bao，LI Ke，et al. Mechanical properties and fracture evolution law of rock-coal-rock combination[J]. Journal of China Coal Society，2022，47(3)：1 155-1 167.(in Chinese))
[17]	牟宗龙，王浩，彭蓬，等. 岩-煤-岩组合体破坏特征及冲击倾向性试验研究[J]. 采矿与安全工程学报，2013，30(6)：841-847. (MOU Zonglong，WANG Hao，PENG Peng，et al. Experimental research on failure characteristics and bursting liability of rock-coal-rock sample[J]. Journal of Mining and Safety Engineering，2013，30(6)：841-847.(in Chinese))
[18]	ZHAO K，HUANG M，ZHOU Y，et al. Synergistic deformation in a combination of cemented paste backfill and rocks[J]. Construction and Building Materials，2022，317：125 943.
[19]	陈绍杰，尹大伟，胡炳南，等. 条带充填坚硬顶板与充填体组合系统力学特性试验研究[J]. 采矿与安全工程学报，2020，37(1)：110-117.(CHEN Shaojie，YIN Dawei，HU Bingnan，et al. Study on mechanical characteristics of composite system of hard roof and filling body under strip filling[J]. Journal of Mining and Safety Engineering，2020，37(1)：110-117.(in Chinese))
[20]	GUO Y X，RAN H Y，FENG G R，et al. Effects of curing under step-by-step load on mechanical and deformation properties of cemented gangue backfill column[J]. Journal of Central South University，2020，27(11)：3 417-3 435.
[21]	ZHAO Y H，GUO Y X，FENG G R，et al. Study on strength and deformation characteristics of cemented gangue backfill body under the coupling action of load and salt erosion[J]. Construction and Building Materials，2022，342：128 003.
[22]	GUO Y X，ZHAO Y H，WANG S W. Stress-strain-acoustic responses in failure process of coal rock with different height to diameter ratios under uniaxial compression[J]. Journal of Central South University，2021，28(6)：1 724-1 736.
[23]	程爱平，舒鹏飞，张玉山，等. 充填体-围岩组合体声发射特征与损伤本构研究[J]. 采矿与安全工程学报，2020，37(6)：1 238-1 245. (CHENG Aiping，SHU Pengfei，ZHANG Yushan，et al. Acoustic emission characteristics and damage constitution of backfill-surrounding rock combination[J]. Journal of Mining and Safety Engineering，2020，37(6)：1 238-1 245.(in Chinese))
[24]	王艳超，高利平，李驰，等. 乌海矿区奥灰岩单轴声发射响应特征及损伤演化规律研究[J]. 内蒙古工业大学学报：自然科学版，2024，43(4)：360-367.(WANG Yanchao，GAO Liping，LI Chi，et al. Uniaxial acoustic emission response characteristics and damage evolution law of Ordovician limestone in Wuhai mining area[J]. Journal of Inner Mongolia University of Technology：Natural Science，2024，43(4)：360-367.(in Chinese))
[25]	左建平，裴建良，刘建锋，等. 煤岩体破裂过程中声发射行为及时空演化机制[J]. 岩石力学与工程学报，2011，30(8)：1 564-1 570. (ZUO Jianping，PEI Jianliang，LIU Jianfeng，et al. Investigation on acoustic emission behavior and its time-space evolution mechanism in failure process of coal-rock combined body[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(8)：1 564-1 570.(in Chinese))
[26]	谭学术. 复合岩体力学理论及其应用[M]. 北京：煤炭工业出版社，1994：6.(TAN Xueshu. Theory and Application of Composite Rock Mechanics[M]. Beijing：China Coal Industry Publishing House，1994：6.(in Chinese))
[27]	余伟健，冯涛，王卫军，等. 充填开采的协作支撑系统及其力学特征[J]. 岩石力学与工程学报，2012，31(增1)：2 803-2 813.(YUN Weijian，FENG Tao，WANG Weijun，et al. Coordination support systems in mining with filling and mechanical behavior[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(Supp.1)： 2 803-2 813.(in Chinese))
[28]	武鹏飞，梁冰，杨逾，等. 矸石充填开采协同承载机制及充填效果评价研究[J]. 采矿与安全工程学报，2022，39(2)：239-247. (WU Pengfei，LIANG Bing，YANG Yu，et al. Collaborative bearing mechanism and filling effect evaluation of gangue filling mining[J]. Journal of Mining and Safety Engineering，2022，39(2)：239-247.(in Chinese))