贵州开磷集团马路坪矿１９９３年研制成功了注浆器和适应大断面永久支护的专用钢筋锚杆。注浆器的研制，经历了设计试验改进成型几个阶段，使容器、密封系统、控制系统、送料注浆系统更具实用性。钢筋锚杆设计过程中，进行了一系列试验，表明锚杆与砂浆粘结力和有效长... Guizhou Phosphorization Group, Ma Luoping mine successfully developed in 1993 and grouting grouting to adapt to a large section of the permanent support of the special steel bolt. Grouting research and development, has gone through several stages of design test  improve  forming, so that containers, sealing systems, control systems, feeding grouting system more practical. During the design process of steel bar, a series of tests have been carried out to show that the anchor bar and the mortar bond strength and effective ...