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为了解决工程实践中渗透注浆浆液扩散半径计算公式相对缺乏及应用性差的问题,在相关假设的基础上,根据达西定律推导出新的渗透注浆浆液扩散半径的计算公式。推导分为注浆孔穿越及未穿越被注岩层两种情况,综合考虑了注浆孔与被注岩层层面夹角及浆液的黏度时变性因素。公式在宁夏某煤矿立井工作面预注化学浆工程中试用,通过在现场工程实践检验,公式具有较好的实用价值。研究对渗透注浆的设计及质量评价具有应用价值。
In order to solve the problem that the formula of diffusion radius of infiltration grouting slurry is relatively lacking and has poor applicability in engineering practice, based on the assumptions, the formula of diffusion radius of new grouting slurry is deduced based on Darcy’s law. Derived into two kinds of grouting hole traversing and not penetrating the rock to be injected, taking into account the angle between the grouting hole and the depth of the grouted hole and the viscosity variation of the grout. Formula in Ningxia coal mine shaft face pre-injection chemical pulp in the trial, through the field engineering practice test, the formula has good practical value. Research on penetration grouting design and quality evaluation has application value.