目前国内使用的干式混凝土喷射机,虽经有关科研设计院所和生产单位多次改进,仍然难以处理比较潮湿的混合料,因此作业时粉尘浓度较大,危害工人健康。近年来,这个问题几乎成了进一步推广喷锚支护的主要障碍。为了减少喷射作业时的粉尘浓度,解决输送潮湿混合料的问题,我院支护设备组对国内 At present, the dry concrete jetting machines used in China are still difficult to handle the wet mixes even though the relevant research institutions, institutes and production units improve them many times. Therefore, the concentration of dust in the operation is relatively large, endangering the health of workers. In recent years, this issue has almost become the main obstacle to further promote spray anchor support. In order to reduce the concentration of dust when spraying, to solve the problem of transporting wet mix, our hospital support equipment group to domestic