Gold Science and Technology
img

Wechat

Adv. Search
Online Submission Peer Review Office Work

Gold Science and Technology ›› 2019, Vol. 27 ›› Issue (2): 216-222.doi: 10.11872/j.issn.1005-2518.2019.02.216

• Mining Technology and Mine Management • Previous Articles     Next Articles

Influence of Moisture Content on Dynamic Tensile Strength of Sandstone

Jianping ZHAO1(),Minghu WANG1(),Yihan ZHAO2   

  1. 1. School of Resources and Safety Engineering，Central South University，Changsha 410083，Hunan，China
    2. Power China Zhongnan Engineering Corporation Limited，Changsha 410014，Hunan，China
  • Received:2018-03-15 Revised:2018-05-03 Online:2019-04-30 Published:2019-04-30
  • Contact: Minghu WANG E-mail:jpzcsu@126.com;283223174@qq.com

RichHTML

1

PDF (PC)

1042

Abstract:

The rocks in the project have different water content.It is important for the design and construction of rock engineering to carry out research on the dynamic mechanical properties of different water content rocks.In order to study the effect of different moisture content on the dynamic tensile strength of sandstone，a series of dynamic Brazil split tests were carried out for the samples in different moisture content by using the Hopkinson pressure bar （SHPB） test device，and the dynamic tensile strength change rule of sandstone with different moisture content under different loading rates was studied.Experimental results show that：The dynamic tensile strength of the rock as loading rate increases，rate dependence is related to the moisture content，rate dependence of saturated sample is stronger，while the dynamic strength of the dry rock is not sensitive to the change in rate of loading.When loading rate is lower，the tensile strength of the rock decreases with the increase of moisture content.When loading rate is higher，because the water Stefan effect results in that the resistance to rock crack generated by the water impeded its expansion，which leads to the increase of rock strength，so that the dynamic tensile strength of saturated sample is higher than that of unsaturated sample.

Key words: moisture content, loading rate, sandstone, dynamic tensile strength, SHPB, Brazilian splitting, strain rate dependence, Stefan effect

CLC Number: 

  • TU45

Fig.1

Curve of water content of sandstone samples with time"

Fig.2

Schematic of SHPB test system"

Fig.3

Curves of dynamic stress balance（a）and loading rate（b）in dynamic tests"

Fig.4

Variation laws of sandstone tensile strength with loading rate"

Table 1

Correlation fitting parameters of dynamic tensile strength of different moisture content"

含水率/%abR2
00.3870.3570.883
1.00.2770.4130.956
2.00.1590.4660.955
3.50.0220.7580.893

Fig.5

Variation laws of DIF with loading rate"

Fig.6

Variation laws of sandstone tensile strength with moisture content"

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.
[1] Tengfei FU, Defu ZHU. Preparation Method and Compression Test of Sandstone with Different Water Saturation Under Constant Humidity Environment [J]. Gold Science and Technology, 2024, 32(2): 280-289.
[2] Weihua WANG, Kai LI, Ruixin HUANG. Study on the Effect of Thermal Shock on Dynamic Fracture Behavior of Granite [J]. Gold Science and Technology, 2023, 31(5): 752-762.
[3] Yuzhang LAI,Xueyi ZHI,Ronghua SHU. Experimental Study on Uniaxial Compression Mechanics and Failure Characteristics of Composite Rocks [J]. Gold Science and Technology, 2022, 30(5): 778-786.
[4] Shengquan ZHOU, Rui WANG, Nuocheng TIAN, Dongwei LI. Research on Dynamic Mechanical Properties of Heat-treated Granite Under Impact Loading [J]. Gold Science and Technology, 2022, 30(2): 222-232.
[5] Feng XIAO, Ping CAO, Zhizhen LIU, Ziyang ZHANG. Study on Fatigue Characteristics of Yellow Sandstone Under Different Stress Upper Limits and Loading Rates [J]. Gold Science and Technology, 2022, 30(2): 233-242.
[6] Zhonghui WANG,Qianfu WANG,Yakun TIAN,Lingling WU,Xueyang YU,Zhijun ZHANG. Study on Consolidation Characteristics of Tailings with Different Moisture Content Under Dry-Wet Cycle [J]. Gold Science and Technology, 2022, 30(1): 54-63.
[7] Baijin LI,Xiang LI,Yan WANG,Tubing YIN,Xibing LI. Effect of Thermal Shock on the Dynamic Tensile Mechanical Behavior of Granite [J]. Gold Science and Technology, 2021, 29(4): 545-554.
[8] Xin ZHAO,Long HAI,Bo XU,Tongjun CHENG. Experimental Study on Preparation of Paste Filling Materials from Power Plant Ash [J]. Gold Science and Technology, 2021, 29(4): 582-592.
[9] Jingkai JIA,Gun HUANG,Long WANG,Qiang CHENG,Libing ZHEN. Study on a New Method of Weakening End Effect in Uniaxial Compression Test [J]. Gold Science and Technology, 2021, 29(3): 382-391.
[10] Weihua WANG,Jie LUO,Tian LIU,Zhenyu HAN. Particle Flow Simulation on Influence of Joint Roughness Coefficient on Stress Wave Propagation and Specimens Failure [J]. Gold Science and Technology, 2021, 29(2): 208-217.
[11] Qianqian WANG,Ying XU,Haibo WANG,Qiangqiang ZHENG,Xian NI,Hao HU. Experimental Study on Dynamic Mechanical Properties of Similar Sandstone Materials with Different Damage Degree [J]. Gold Science and Technology, 2020, 28(6): 868-876.
[12] Jingyu GUO,Chengzhi PU,Guicheng HE,Yilong LI,Shaofeng YANG,Jiajun ZENG. Fracture Test of Rock-like Materials with Cracks and Analysis of Acoustic Emission Characteristics at Static-Quasi-Static Loading Rates [J]. Gold Science and Technology, 2020, 28(6): 877-884.
[13] Bing DAI, Qiwei SHAN, Xinyao LUO, Yongming XUE. Cyclic Impact Test of Hole-bearing Rock Under Static Stress [J]. Gold Science and Technology, 2020, 28(4): 531-540.
[14] Jian HU, Fengqiang GONG, Hangyu JIA. Research on Mechanical and Energy Dissipation Characteristics of Red Sandstone in SHPB Compression Test [J]. Gold Science and Technology, 2020, 28(3): 411-420.
[15] Siyu MAO, Ping CAO, Jianxiong LI, Chuanjing OU. Fatigue Damage Analysis of Fractured Sandstone Based on Nuclear Magnetic Resonance T2 Spectrum [J]. Gold Science and Technology, 2020, 28(3): 430-441.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!

©2018 Gold Science and Technology　

Telephone：0931-8277791　

E-mail: hjkx@lzb.ac.cn Postcode：730000　

Powered by Beijing Magtech Co. Ltd

陇ICP备17001318号-1