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[1]熊祖强,刘旭锋,王成,等.高水巷旁充填材料单轴压缩变形破坏与能耗特征分析[J].中国安全生产科学技术,2017,13(1):65-70.[doi:10.11731/j.issn.1673-193x.2017.01.011]
　XIONG Zuqiang,LIU Xufeng,WANG Cheng,et al.Analysis on deformation failure and energy consumption characteristics of high-water roadside filling materials under uniaxial compression[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(1):65-70.[doi:10.11731/j.issn.1673-193x.2017.01.011]
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高水巷旁充填材料单轴压缩变形破坏与能耗特征分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年1期
页码:
65-70
栏目:
现代职业安全卫生管理与技术
出版日期:
2017-01-31

文章信息/Info

Title:
Analysis on deformation failure and energy consumption characteristics of high-water roadside filling materials under uniaxial compression
文章编号:
1673-193X(2017)-01-0065-06
作者:
熊祖强1; 3 ;  刘旭锋1; 3 ;  王成1; 3 ; 王雨利2;  丁子文1
1.河南理工大学 能源科学与工程学院，河南 焦作 454000；2.河南理工大学 材料科学与工程学院，河南 焦作 454000； 3.煤炭安全生产河南省协同创新中心，河南 焦作 454000
Author(s):
XIONG Zuqiang1; 3;  LIU Xufeng1; 3;  WANG Cheng1; 3;  WANG Yuli2;  DING Ziwen1
1. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454000, China; 2. School of Material Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454000, China; 3. Henan Collaborative Innovation Center of C
关键词:
高水材料; 单轴压缩; 微观形貌; 变形破坏特征
Keywords:
high-water material;  uniaxial compression;  micro morphology;  deformation and failure characteristics
分类号:
TD313
DOI:
10.11731/j.issn.1673-193x.2017.01.011
文献标志码:
A
摘要:
高水巷旁充填材料在煤矿沿空留巷工程中得到了广泛应用，水灰比对其力学性质关系密切。首先通过扫描电镜分析了高水材料的微细观形貌，其次通过 RMT-301伺服试验机对1.3~2.5∶1等6种水灰比的高水材料试样进行了单轴压缩试验，得到了各水灰比试样的全应力-应变曲线，分析了试样的变形特征、强度及破坏特征、能耗特征随水灰比变化的规律。结果表明，高水材料的微观结构为固、液、气构成的多孔海绵状结构；高水材料的变形特征与岩样相似，也大致可分为压密阶段、线弹性阶段、屈服阶段以及峰后应变软化阶段，弹性模量、割线模量和峰值强度等随水灰比提高多呈指数函数关系下降；随着水灰比增大，试样由脆性破坏逐渐过渡到延性破坏；随着水灰比增大，试样吸收的总应变能与可释放弹性应变能均呈指数函数关系下降，而耗散能变化幅度不大。
Abstract:
The high-water roadside filling materials have been widely applied to the engineering of retaining roadways along goaf in coal mine, and its mechanical properties are closely related to the water cement ratio. Firstly, the micro morphology of the high-water material was analyzed by SEM. Then the uniaxial compression tests were conducted on the high-water material samples with six water cement ratios from 1.3∶1 to 2.5∶1 by the RMT-301 servo testing system. The full stress-strain curves of all the samples with different water cement ratios were obtained, and the variation laws of deformation characteristic, strength characteristic, failure characteristic, energy consumption characteristic with the water cement ratio were analyzed. The results showed that the microstructure of high-water material is a porous spongiform structure composed of solid, liquid and gas. The deformation characteristic of high-water material is similar to the rock samples, and it also can be divided into compaction phase, linear elastic phase, yield phase, and post-peak strain softening phase roughly. The elastic modulus, secant modulus and the peak strength decrease by exponential function with the increase of water cement ratio. The samples gradually transit from brittle failure to ductile failure with the increase of water cement ratio. The total strain energy and the released elastic strain energy absorbed by the samples both decrease by exponential function with the increase of water cement ratio, whereas the dissipation energy changes little.

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备注/Memo

备注/Memo:
国家自然科学基金项目(50908076,51304065,51274088)
更新日期/Last Update: 2017-03-02