【摘要】 通过对硅粉的成分分析、井下喷射混疑土试验中粉尘的测定和化验及作用机理分析可知，硅粉应用于喷射混凝土中，不会提高粉尘浓度，影响作业环境，它是一种很有推广价值的改善混凝土性能的新型材料。更多还原

【Abstract】 By the analysis of the cmposition of silicon powders, the measurement and chemical examination of dust concentration in the shot crete tese underground and the analysis of the applied mechanism,it can be seen that sillicon powders do not increase the dust concentration and do not effect the operating environment when they are used inshotcrete. So it is a new type of material which can be used widely and improve concreteperformance.更多还原