煤巷锚网防风化喷涂材料性能的试验

Performance test of weather proof coating material for bolt and steel mesh in seam gateway

为了探讨适用于煤壁及锚网的防风化材料的合理配比,提出采用聚乳液改性水泥浆液作为喷涂材料,对锚网支护巷道进行喷涂。应用正交试验方法,选取水泥用量、水灰比、聚灰比和砂灰比为4个因素及4个水平作正交试验。改变材料配比以研究喷涂材料的抗压强度、黏结抗拉强度等性质的变化,得到适用于煤矿巷道的喷涂材料配比,将其应用于井下巷道,结果表明聚合物砂浆喷层胶结性好,凝固快,对巷道封闭效果好,能覆盖金属网和煤壁,有效防止金属网锈蚀。

In order to discuss the rational mixing ratio of the weather proof material suitable for the coal wall and bolt/steel mesh,the paper provided the poly emulsion modified cement grout as the spraying and coating material to spray and coat the gateway with bolt and steel mesh support.With the application of the normal test method,the normal test was conducted for the 4 factors and 4 levels with cement quantity,water and cement ratio,poly cement ratio and sand and cement ratio.Under the material ratio changed,t...