###
DOI:
有色金属(矿山部分):2023,75(5):43-51
←前一篇   |   后一篇→
本文二维码信息
码上扫一扫!
深部软破岩体巷道失稳机理分析与支护优化研究
王能跃1,王 堃2,王世博3,4
((1. 中国黄金集团贵州有限公司,贵阳 550005; 2.矿冶科技集团有限公司,北京 102600; 3. 金川集团股份有限公司,甘肃 金昌 737100; 4.北京科技大学 土木与资源工程学院,北京 100083))
Analysis of destabilization mechanism and optimization of support for deep soft-break rock roadway
WANG Nengyue1, WANG Kun2, WANG Shibo3,4
((1. China Gold Group Guizhou Co., Ltd., Guiyang 550005, China; 2. BGRIMM Technology Group, Beijing 102600, China; 3. Jinchuan Group Co., Ltd., Jinchang 737100, Gansu, China; 4.School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China))
摘要
图/表
参考文献
相似文献
本文已被:浏览 304次   下载 362
投稿时间:2023-01-03    修订日期:2023-02-01
中文摘要: 为解决锦丰金矿深部回采过程中巷道失稳问题,通过分析原巷道支护方案失效特征,进行了深部巷道变形破坏机理分析,并据此提出了以“控制高应力+封闭岩面阻止围岩劣化”为原则的三套支护优化方案,综合采用FLAC3D数值模拟及现场监测两种手段,对原支护方案以及优化方案分别进行了支护效果对比分析。结果表明:变形破坏机制属于应力扩容型与软化膨胀型,受自身矿物组分特性以及以高应力为主导力源共同影响、控制,其破坏机理以剪切破坏为主,少量拉伸破坏并存;在支护效果控制上,湿喷混凝土一、二次支护喷层厚度并不起决定性作用,但二次支护时各锚杆单体之间所形成的联合支护体支护效果,随二次喷层厚度优化而得到显著改善;现场试验结果与模拟结果一致,“钢网+树脂锚杆+纤维混凝土”联合支护优化方案为最优方案,支护效果显著,两帮、顶板累积位移量较原方案分别下降了48.67%、72.85%。
Abstract:To solve the problem of channel destabilization in the deep recovery process of Jinfeng Gold Mine, the failure characteristics of the original channel support scheme were analyzed, and the mechanism of deformation and damage of the deep channel was analyzed, and three sets of support optimization schemes based on the principle of "controlling high stress + closing the rock surface to stop the deterioration of surrounding rock" were proposed. Both FLAC3D numerical simulation and field monitoring were used to compare and analyze the support effect of the original support scheme and the optimized scheme respectively. The research results have shown that the deformation damage mechanism has belonged to the stress expansion type and softening expansion type, which was jointly influenced and controlled by the characteristics of its own mineral components and high stress as the dominant force source, and its damage mechanism was mainly shear damage, with a small amount of tensile damage. In the control of the support effect, wet spray concrete, the thickness of the first and second support spray layers does not play a decisive role. However, the support effect of the joint support body formed by each anchor monomer in the secondary support was significantly improved with the optimization of the thickness of the secondary spraying layer; the field test results were consistent with the simulation results, and the joint support optimization scheme of "steel mesh + resin anchor + fiber concrete" was the optimal scheme, with significant support effect, and the cumulative displacement of the two sides and the top plate was reduced by 48.67% and 72.85% respectively compared with the original scheme.
文章编号:     中图分类号:    文献标志码:
基金项目:
引用文本:
王能跃,王 堃,王世博.深部软破岩体巷道失稳机理分析与支护优化研究[J].有色金属(矿山部分),2023,75(5):43-51.
WANG Nengyue,WANG Kun,WANG Shibo.Analysis of destabilization mechanism and optimization of support for deep soft-break rock roadway[J].NONFERROUS METALS(Mining Section),2023,75(5):43-51.

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:ysjsks@sina.com;ysjsks@163.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