PS6I矿用混合型湿喷机组的设计及性能分析

Design and Performances Analysis on PS6I Wet Concrete Shooter Machine in Coal Mine

为解决现有干式喷浆机易堵管、粉尘大、回弹率高和抗压强度低等问题,设计了一种PS6I矿用混合型湿喷机组,其采用独立制浆机和抽浆泵的结构,易于精确掌控物料的配比并促成干料和湿料的均匀混合。同时干湿料的区分输送大幅降低了粉尘浓度和堵管概率,既改善作业环境,又有效地保证干湿料的连续传输,喷混凝土连续作业能力增强。现场分别收集干式喷浆机和PS6I矿用混合型湿式喷浆机作业的混凝土试块及回弹料,并测试各区域粉尘浓度,通过实验室单轴试验和理论计算对比分析两者的技术经济指标。结果表明,PS6I矿用混合型湿喷机组喷浆相比较干式喷浆机作业,回弹率降低10%,喷混凝土抗压强度提高22.4%,粉尘浓度降低46.1%。

In order to solve the problems of dry shotcrete machine, such as easy blocking pipe, high dust concentration, high rebound rate and low compressive strength, PS6I wet concrete shooter machine was designed which adopted a structure of independent pulping machine and a slurry pump, it was easy to control the material proportioning precisely and mix the dry and wet materials. Besides, wet and dry material were transported separately to improve the quality of working atmosphere, and effectively guarantee the continuous transmission of wet material and the spray concrete continuous operation ability, which also greatly reduced the dust concentration and the risk of blocking pipe. The concrete samples and rebound material different from dry shotcrete machine and PS6I wet concrete shooter machine were collected and the dust concentration of each district was tested. The uniaxial material tests and theoretical calculation were applied to analyze the technical and economic index for both of them. Compared to dry shotcreting, PS6I wet concrete shooter machine rebound rate decreased 10%, its concrete compressive strength increased 22.4% and the dust concentration decreased 46.1 %.