###
DOI:
有色金属(矿山部分):2022,74(3):16-23
←前一篇   |   后一篇→
本文二维码信息
码上扫一扫!
掺纤维分层胶结充填体力学强度特性试验
王喜婵1,2,郭忠林1,孙 伟1,2
((1.昆明理工大学 国土资源工程学院,昆明 650093; 2.云南省中-德蓝色矿山与特殊地下空间开发利用重点实验室,昆明 650093))
Mechanical strength properties of fiber-doped layered cemented backfill
WANG Xichan1,GUO Zhonglin1,SUN Wei1,2
((1.?Faculty?of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China; 2.Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space, Kunming 650093, China))
摘要
图/表
参考文献
相似文献
本文已被:浏览 70次   下载 120
投稿时间:2022-01-14    修订日期:2022-03-03
中文摘要: 针对充填体胶结强度低和易开裂等问题,开展纤维类型、分层数对充填体单轴抗压强度的影响规律实验研究。结果表明:未掺纤维的充填体为张拉破坏,掺纤维充填体受压膨胀呈现鼓状,整体裂而不断,保持较高的完整性。分层面在一定程度上劣化了充填体力学性能,随分层面的增多充填体单轴抗压强度逐渐减小。添加纤维充填体在达到峰值荷载后仍具有一定承载能力,呈现“裂而不碎”的特征。通过对比聚丙烯腈纤维、玻璃纤维、聚丙烯腈纤维三种纤维,添加聚丙烯腈纤维更有利于充填力学性能的改善。
Abstract:Aiming at the problems of low cementation strength and easy cracking of the filling body, an experimental study on the influence of fiber type and number of layers on the uniaxial compressive strength of the filling body was carried out.The research results show that the filling body without fiber is tensile failure, and the filling body doped with fiber shows a drum-like expansion under pressure, and the whole is cracked and continuously maintained, maintaining a high integrity.The layered layer deteriorates the mechanical properties of the filling body to a certain extent, and the uniaxial compressive strength of the filling body gradually decreases with the increase of the layered layer. The added fiber filler still has a certain bearing capacity after reaching the peak load, showing the characteristics of "crack but not broken". By comparing the three fibers of polyacrylonitrile fiber, glass fiber and polyacrylonitrile fiber, adding polyacrylonitrile fiber is more conducive to the improvement of filling mechanical properties.
文章编号:     中图分类号:    文献标志码:
基金项目:国家自然科学基金资助项目(51964023)
引用文本:
王喜婵,郭忠林,孙 伟.掺纤维分层胶结充填体力学强度特性试验[J].有色金属(矿山部分),2022,74(3):16-23.
WangXichan.Mechanical strength properties of fiber-doped layered cemented backfill[J].NONFERROUS METALS(Mining Section),2022,74(3):16-23.

我们一直在努力打
造,精品期刊,传
播学术成果

全国咨询服务热线
86-10-63299757

杂志信息

期刊简介

相关下载

联系我们

电话:010-63299757

传真:010-63299754

QQ:XXXXXXX

Email:ysks@bgrimm.com

邮编:100160

地址:北京市南四环西路188号总部基地十八区23号楼

关注微信公众号