锚杆及钢带协同作用下的岩块力学特性试验研究  

Experimental study on mechanical properties of rock block under collaborative action of anchor rod and steel strip

作　　者：黄国铭 朱永建 李鹏[1] 王平 林强伟 杨欢[1] 周安平 Huang Guoming;Zhu Yongjian;Li Peng;Wang Ping;Lin Qiangwei;Yang Huan;Zhou Anping(School of Resource and Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Goal Mines,Hunan University of Science and Technology,Xiangtan 411201,China;Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China;Zixing Mining Area Safety Production Management Bureau,Hunan Coal Industry Co.,Ltd.,Chenzhou 423000,China)

机构地区：[1]湖南科技大学资源环境与安全工程学院,湖南湘潭411201 [2]湖南科技大学南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室,湖南湘潭411201 [3]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201 [4]湖南煤业股份有限公司资兴矿区安全生产管理局,湖南郴州423000

出　　处：《能源与环保》2024年第10期272-279,共8页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金面上项目(52274119);国家自然科学基金面上项目(52174110)。

摘　　要：为研究钢带及锚杆对锚固体的作用机理,利用RMT-150C岩石力学试验加载系统,进行了端锚与全锚加钢带和不加钢带试件的单轴加载对比试验,比较了锚固方式和支护密度对试件的锚固效果。研究结果表明,全锚锚杆在提高试件强度方面比端锚锚杆效果更强。安装钢带的试件的峰值强度总体较未加装钢带的试件得到较大提升,但随着锚杆数量的增多,这种提升效果逐渐减弱;此外,钢带对全锚试件的提升效果优于端锚试件。安装钢带的试件在抗压强度和侧向抗拉强度方面均有所提升。锚杆的支护密度应与试件大小相适应,过密的支护密度同样会弱化试件强度。In order to study the action mechanism of steel band and anchor rod on anchor mass,uniaxial loading comparison test of end anchor and full anchor with steel strip and without steel strip was carried out by using RMT-150C rock mechanics test loading system,and the anchoring effect of anchoring method and supporting density on the specimens was compared.The results show that the full anchor bolt has a stronger effect than the end anchor bolt in improving the strength of the specimens.The peak strength of the specimens installed with steel strips is generally higher than that of the specimens without steel strips,but with the increase of the number of bolts,this effect is gradually weakened.In addition,the lifting effect of steel strip on the whole anchor specimen is better than that of the end anchor specimen.The installation of steel strip specimens has improved both compressive strength and lateral tensile strength.The supporting density of anchor rods should be suitable for the size of the specimen,and an overly dense supporting density will also weaken the strength of the specimen.

关 键 词：岩块锚固 相似模拟试验 协同支护 

分 类 号：TD353[矿业工程—矿井建设]