倾斜煤岩裂隙通道中水泥基泡沫流变特性研究

发布时间：2018-03-04 04:01

本文选题：水泥基泡沫　切入点：屈服应力　出处：《硅酸盐通报》2017年09期 　论文类型：期刊论文

【摘要】：水泥基泡沫流体是一种新型的防控高温煤岩裂隙材料,其流变特性是工程应用过程中的关键指标。基于三相泡沫体浆液材料流变参数采用流变仪和环管试验测定分析的基础上,开展了倾斜裂隙通道中泡沫受力和运动分析,得到了不同裂隙倾角下屈服应力和塑性黏度的关系方程式。建立了倾斜裂隙通道泡沫流动试验物理模型,采用均匀设计试验方法,得到了流变参数回归拟合方程且四个因素影响程度依次为:泥浆水灰比、水基泡沫掺量、调凝剂掺量、粉煤灰掺量。进而结合实际工程应用指标,得出了具有较低的屈服应力和塑性黏度的物料配比为水基泡沫掺量为4V(浆液体积),泥浆水灰比为0.5,粉煤灰掺量为30%,调凝剂掺量为5%。
[Abstract]:Cement based foam fluid is a new type of high temperature coal and rock fracture material, and its rheological property is the key index in engineering application. Based on the rheological parameters of three-phase foam slurry material measured by rheometer and annular pipe test, The stress and motion analysis of foam in inclined fissure channel are carried out, and the relation equation between yield stress and plastic viscosity under different crack inclination angle is obtained. The physical model of foam flow test in inclined fissure channel is established, and the uniform design test method is adopted. The regression fitting equation of rheological parameters is obtained and the influence degree of the four factors is as follows: the ratio of mud to cement, the amount of water based foam, the amount of coagulant and the amount of fly ash. The results show that the ratio of low yield stress and plastic viscosity is 4V (slurry volume, slurry / cement ratio 0.5, fly ash 30 and coagulant 5).
【作者单位】：湖南科技大学南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室;湖南科技大学资源环境与安全工程学院;
【基金】：国家自然科学基金青年科学基金(51604110) 湖南省自然科学基金青年科学基金(2017JJ3074) 中国博士后基金面上项目(2017M612558) 湖南省教育厅一般科研项目(17C0641)
【分类号】：TU528

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