矿用无机固化泡沫充填材料研究及应用

发布时间：2018-07-27 18:53

【摘要】：针对井下堵漏风和密闭墙构建时存在的劳动强度大,密封效果差等缺点,研制了一种无机固化泡沫充填材料,通过大量的实验研究了泡沫掺量、水灰比和胶凝剂对材料性能的影响,并对其进行了现场应用。研究结果表明:泡沫掺量的增加和水灰比的增大均能使初凝时间增加,硫铝酸盐水泥充填材料的初凝时间是普通水泥充填材料的31%~44%;抗压强度随泡沫掺量增加而明显降低,硫铝酸盐水泥为胶凝剂时的充填材料抗压强度较大;泡沫掺量为1,2,3倍时的材料密度是未添加泡沫时的40%~46%,23%~33%和18%~24%,可以显著降低劳动强度;硫铝酸盐充填材料在内部孔结构方面优于普通水泥充填材料。研究成果可用于确定最佳的无机固化泡沫充填材料配方,现场应用表明材料密封效果和抗压强度好,具有广阔的应用空间。
[Abstract]:A kind of inorganic solidified foam filling material has been developed in view of the disadvantages of high labor intensity and poor sealing effect in the construction of underground air plugging and sealing wall, and the foam content has been studied through a large number of experiments. The effects of water-cement ratio and gelling agent on the properties of the materials were studied and applied in the field. The results show that the initial setting time can be increased with the increase of foam content and water-cement ratio, and the initial setting time of sulphoaluminate cement filling material is 31 / 44 of the ordinary cement filling material, and the compressive strength decreases obviously with the increase of foam content. When sulphoaluminate cement is the gelling agent, the compressive strength of the filling material is larger, the material density of the filling material when the foam content is 1 / 2 or 3 times is 4046 / 2333% and 1 824 / 24 when the foam is not added, and the labor strength can be significantly reduced. Sulphoaluminate filling material is superior to ordinary cement filling material in internal pore structure. The research results can be used to determine the best formula of inorganic solidified foam filling material. The field application shows that the sealing effect and compressive strength of the material are good and the material has wide application space.
【作者单位】：西安科技大学安全科学与工程学院;陕西省煤火防治重点实验室;
【基金】：国家自然科学基金重点项目(51134019);国家自然科学基金项目(51674191,51774232) 陕西省自然科学基金项目(2016JM5016)
【分类号】：TD728

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