磁化水降低喷射混凝土回弹量的试验研究  

Experimental Study on Reducing Shotcrete Rebound by Using Magnetized Water

作　　者：汪学清[1] 周坤鹏 张志高 田凤格 李鑫鹏 WANG Xue-qing;ZHOU Kun-peng;ZHANG Zhi-gao;TIAN Feng-ge;LI Xin-peng(School of Mechanics & Civil Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China;Longgu Coal Mine, Xinjulong Group Co Ltd, Heze 274900, Shandong, China)

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]新巨龙公司龙堌煤矿,山东菏泽274900

出　　处：《矿冶工程》2019年第1期29-31,35,共4页Mining and Metallurgical Engineering

基　　金：中央高校基本科研业务费资助(2009QL11)

摘　　要：为了减少煤矿巷道掘进过程中喷射混凝土作业产生的回弹量,达到节资降耗的目的,在混凝土喷射机供水管路中直接串联磁水器,分别用不同磁感应强度条件下的磁化水拌制喷射混凝土,在施工现场研究了磁感应强度与喷射混凝土回弹量的关系。结果表明:与普通水相比,用不同磁感应强度条件下的磁化水拌制的喷射混凝土,其回弹量均有不同程度的降低,尤其是当磁感应强度为430 mT时,回弹率降到了8.66%,取得了降低喷射混凝土回弹量的良好效果。In order to reduce shotcrete rebound in the coal mine roadway excavation for saving material resources and reducing consumption, a magnetizer was directly connected to the water supply pipe of the shotcreter, and shotcrete was prepared with magnetized water under different magnetic flux densities, on the construction site, and the relationship between shotcrete rebound and magnetic flux densities was investigated. The results showed that shotcrete rebound was reduced to some extent by using the magnetized water to replace ordinary water. Especially, with the magnetic flux density at 430 mT, the shotcrete rebound reduced to 8.66%, showing a good effect.

关 键 词：喷射混凝土 磁化水 磁感应强度 回弹量 

分 类 号：TD352.15[矿业工程—矿井建设]