锚杆与注浆体的粘结强度对锚固效果的影响  

The Impact of Bonding Strength of Rock Bolt and Grouting Body on the Anchoring Effect

作　　者：侯永强[1] 张耀平[1] 王磊[1] 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州市341000

出　　处：《矿业研究与开发》2017年第1期82-84,共3页Mining Research and Development

摘　　要：在工程支护中,杆体与注浆体的粘结强度对于锚固效果有着重大的影响。为此,针对粘结长度,注浆体强度,锚杆表面形状等影响因素,进行了拉拔试验研究。试验结果表明,杆体与注浆体的粘结强度随着粘结长度的增加而增大;相比光圆杆体,螺纹杆体能有效地提高锚固效果;此外,采用较低水灰比的水泥砂浆也可以提高锚固效果。In the engineering supporting, the bonding strength of rock bolt and grouting body has a significant impact on the an- choring effect. Therefore, aimed at the influence factors, including bonding length, grouting strength and surface shape of rock bolt, the pulling resistance tests were carried out. The results showed that the bonding strength was improved with the increase of bonding length. Meanwhile, compared with the smooth round bolt, the threaded bolt could effectively improve the anchoring effect. Besides, the cement mortar with low water-cement ratio also could improve the anchoring effect.

关 键 词：锚杆锚固力 注浆体 粘结强度 抗拉拔力 

分 类 号：TD353.6[矿业工程—矿井建设]