黄金科学技术 ›› 2019, Vol. 27 ›› Issue (2): 216-222.doi: 10.11872/j.issn.1005-2518.2019.02.216
Jianping ZHAO1(),Minghu WANG1(),Yihan ZHAO2
摘要:
工程中的岩石具有不同的含水性,研究不同含水率岩石动态力学性质的变化规律,对岩石工程的设计和建设具有很强的指导意义。为研究不同含水率对砂岩动态拉伸强度的影响,利用霍普金森压杆(SHPB)试验装置对不同含水率试样进行了一系列动态巴西劈裂试验,研究了不同含水率砂岩在不同加载率条件下的动态拉伸强度变化规律。试验结果表明:岩石的动态拉伸强度随着加载率的增加而增加,其率相关性与含水率有关,饱和试样的率相关性较强,而干燥岩石的动态强度对加载率的变化不敏感。当加载率较低时,岩石的拉伸强度随着含水率的增加而降低;当加载率较高时,由于水的Stefan效应,水对岩石裂纹产生抗力,阻碍其扩展,导致岩石强度增加,饱和试样的动态拉伸强度出现高于非饱和试样强度的现象。
中图分类号:
1 | WongL N Y,MaruvancheryV,LiuG.Water effects on rock strength and stiffness degradation[J].Acta Geotechnica,2016,11(4):713-737. |
2 | IversonR M.Landslide triggering by rain infiltration[J].Water Resources Research,2000,36(7):1897-1910. |
3 | BaiH B,MaD,ChenZ Q.Mechanical behavior of groundwater seepage in karst collapse pillars[J].Engineering Geology,2013,164(18):101-106. |
4 | PoulsenB A,ShenB,WilliamsD J,et al.Strength reduction on saturation of coal and coal measures rocks with implications for coal pillar strength[J].International Journal of Rock Mechanics and Mining Sciences,2014,71:41-52. |
5 | PriceN J.The compressive strength of coal measure rocks[J].Colliery Engineering,1960,37(437):283-292. |
6 | BellF G.The physical and mechanical properties of the fell sandstones,Northumberland,England[J].Engineering Geology,1978,12:1-29. |
7 | 陈钢林,周仁德.水对受力岩石变形破坏宏观力学效应的实验研究[J].地球物理学报,1991,34(3):335-342. |
ChenGanglin,ZhouRende.An experimental study concerning the macroscopic effect of water on the deformation and failure of loaded rocks[J].Journal of Geophysics,1991,34(3):335-342. | |
8 | ErgulerZ A,UlusayR.Water-induced variations in mechanical properties of clay-bearing rocks[J].International Journal of Rock Mechanics and Mining Sciences,2009,46(2):355-370. |
9 | VásárhelyiB.Statistical analysis of the influence of water content on the strength of the miocene limestone[J].Rock Mechanics and Rock Engineering,2005,38(1):69-76. |
10 | KarakulH,UlusayR.Empirical correlations for predicting strength properties of rocks from P-wave velocity under different degrees of saturation[J].Rock Mechanics and Rock Engineering,2013,46(5):981-999. |
11 | WongL N Y,MingC J.Water saturation effects on the brazilian tensile strength of gypsum and assessment of cracking processes using high-speed video[J].Rock Mechanics and Rock Engineering,2014,47(4):1103-1115. |
12 | HashibaK,FukuiK.Effect of water on the deformation and failure of rock in uniaxial tension[J].Rock Mechanics and Rock Engineering,2015,48(5):1751-1761. |
13 | 楼沩涛.干燥和水饱和花岗岩的动态断裂特性[J].爆炸与冲击,1994,14(3):249-254. |
LouWeitao.Dynamic fracture characteristics of dry and water-saturated granite[J].Explosion and Shock Waves,1994,14(3):249-254. | |
14 | OgataY,JungW,KubotaS,et al.Effect of the strain rate and water saturation for the dynamic tensile strength of rocks[J].Materials Science Forum,2004,465/466:361-366. |
15 | HuangS,XiaK W,YanF,et al.An experimental study of the rate dependence of tensile strength softening of Longyou sandstone[J].Rock Mechanics and Rock Engineering,2010,43(6):677-683. |
16 | 王斌,李夕兵,尹土兵,等.饱水砂岩动态强度的SHPB试验研究[J].岩石力学与工程学报,2010,29(5):1003-1009. |
WangBin,LiXibing,YinTubing,et al.SHPB test study on dynamic strength of saturated sandstone[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(5):1003-1009. | |
17 | 袁璞,马瑞秋.不同含水状态下煤矿砂岩SHPB试验与分析[J].岩石力学与工程学报,2015(增1):2888-2893. |
YuanPu, MaRuiqiu.SHPB tests and analysis of coalmine sandstone with various moisture contents[J].Chinese Journal of Rock Mechanics and Engineering,2015(Supp.1):2888-2893. | |
18 | ZhouY X,XiaK,LiX 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 | LiX B,LokT S,ZhaoJ.Dynamic characteristics of granite subjected to intermediate loading rate[J].Rock Mechanics and Rock Engineering,2005,38(1):21-39. |
20 | ISRM.Suggested methods for determining tensile strength of rock materials[J].International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts,1978,15(3):99-103. |
21 | DaiF,HuangS,XiaK W,et al.Some fundamental issues in dynamic compression and tension tests of rocks using split Hopkinson pressure bar[J].Rock Mechanics and Rock Engineering,2010,43(6):657-666. |
22 | ZhouZ L,CaiX,CaoW Z,et al.Influence of water content on mechanical properties of rock in both saturation and drying processes[J].Rock Mechanics and Rock Engineering,2016,49(8):3009-3025. |
23 | ZhouZ L,LiX B,YeZ Y,et al.Obtaining constitutive relationship for rate-dependent rock in SHPB tests[J].Rock Mechanics and Rock Engineering,2010,43(6):697-706. |
24 | ZhouZ L,LiX B,LiuA H,et al.Stress uniformity of split Hopkinson pressure bar under half-sine wave loads[J].International Journal of Rock Mechanics and Mining Sciences,2011,48(4):697-701. |
25 | ZhangQ B,ZhaoJ.A review of dynamic experimental techniques and mechanical behaviour of rock materials[J].Rock Mechanics and Rock Engineering,2014,47(4):1411-1478. |
26 | HongL,ZhouZ L,YinT B,et al.Energy consumption in rock fragmentation at intermediate strain rate[J].Journal of Central South University of Technology,2009,16(4):677-682. |
27 | RossiP.A physical phenomenon which can explain the mechanical behaviour of concrete under high strain rates[J].Materials and Structures,1991,24(6):422-424. |
28 | 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):2406-2414. |
WangWen, LiHuamin, GuHelong.Experimental study on the strength characteristics of water-bearing coal samples in three-dimensional static and dynamic combination [J].Chinese Journal of Rock Mechanics and Engineering,2017,36(10):2406-2414. | |
29 | 薛奕忠,刘涛,唐礼忠,等.SHPB动态巴西劈裂裂纹起裂及扩展研究[J].武汉理工大学学报,2013,35(3):97-101. |
XueYizhong, LiuTao,TangLizhong,et al.Study of SHPB dynamic spelit crack initiation and propagation[J].Journal of Wuhan University of Technology,2013,35(3):97-101. | |
30 | 王慧文,李江腾,高吉超,等.干燥及饱水状态下基于巴西劈裂法的板岩抗拉强度[J].中南大学学报(自然科学版),2017,48(4):1044-1048. |
WangHuiwen, LiJiangteng,GaoJichao,et al.Tensile strength of slates under Brazilian splitting test in dry and saturated condition[J].Journal of Central South University(Science and Technology),2017,48(4):1044-1048. |
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