矿用高强无机锚固材料性能优化试验

Experimental on Performance Optimization of High-Strength Inorganic Anchoring Materials for Mining

巷道底板高预应力锚索支护是解决巷道底板底鼓的有效方法之一,但由于底板和锚固孔孔底通常含有积水,导致树脂锚固剂及水泥砂浆锚固剂在底板锚固时锚固效果较差,锚固力低,锚固力衰减较快.因此,以自主研发的锚固原材料为基础,通过正交试验研究硅灰、矿粉、偏高岭土、聚丙烯纤维素对锚固材料性能的影响,并通过SPSS数据分析软件对试验结果进行方差、极差以及Duncan多重比较分析,得到当水灰比为0.4,添加的硅灰、矿粉、偏高岭土、聚丙烯纤维素质量分别占锚固原材料总质量的1.50%,0.10%,12.00%,0.05%时,锚固材料固化体的抗压强度较强.

The high prestressed anchor cable support of the roadway floor is one of the effective methods to solve the floor heave of the roadway.However,since the bottom plateand and the bottom of the anchoring hole usually contain water,the anchoring effect of resin anchoring agent and cement mortar anchoring agent is poor during the bottom plate the anchoring force is low,and the fixed force decay is fast.Therefore,based on the self-developed anchoring raw materials,the influences of silica fume,mineral powder,metakaolin and polypropylene cellulose on the properties of anchoring materials are studied by orthogonal test,and through SPSS data analysis software,the test results are analyzed for variance,range,and Duncan multiple comparisons.Results show that when the water-cement ratio is 0.4,and the additive amount of silica fume,mineral powder,metakaolin and polypropylene cellulose accounts for 1.50%,0.10%,12.00%and 0.05%of the total amount of anchoring raw materials,respectively.The compressive strength of anchoring material solidified body is stronger.