基于F-RFPA~(2D)的断层注浆加固数值模拟研究
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摘要
注浆是浆液在岩石裂隙中扩散、充填、固结的过程,能有效改善破碎岩体的阻水性、增加被注介质的稳定性,由于注浆的相对工期较短、适用面广、易于控制等优点,该技术被广泛应用于矿山建设等各类地上、地下岩土工程中。在注浆封堵工程中,注浆压力将加速裂纹扩展以及导致岩体产生变形,受到破坏的岩体会影响浆液扩散距离以及最终的注浆封堵效果。以淮南张集矿1413工作面底板灰岩水防治工程中对过断层区段采取注浆堵水加固措施为背景,通过分析研究区内地质水文地质条件,结合现场注浆工艺和注浆参数,采用F-RFPA~(2D)对此次注浆工程封堵效果进行模拟研究,分析显示:浆液有效扩散半径达到设计要求,注浆效果良好。
In the grouting plugging project,the grouting pressure will accelerate the crack growth and lead to deformation of the rock mass,and the damage of the rock mass will affect the slurry diffusion distance and the final grouting effect. With the reinforcement measures of grouting water to the fault section in the control project of limestone water in the coal mining 1413 of Zhang Town Huainan being the background,through the analysis of the geological and hydro-geological conditions,combined with grouting technology and grouting parameters,the simulation study was carried out on the grouting plugging effect by F-RFPA2 D,which showed that the effective grout diffusion radius meet the design requirements and the grouting effect is good.
In the grouting plugging project,the grouting pressure will accelerate the crack growth and lead to deformation of the rock mass,and the damage of the rock mass will affect the slurry diffusion distance and the final grouting effect. With the reinforcement measures of grouting water to the fault section in the control project of limestone water in the coal mining 1413 of Zhang Town Huainan being the background,through the analysis of the geological and hydro-geological conditions,combined with grouting technology and grouting parameters,the simulation study was carried out on the grouting plugging effect by F-RFPA2 D,which showed that the effective grout diffusion radius meet the design requirements and the grouting effect is good.
引文
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[3]李昂.带压开采下底板渗流与应力耦合破坏机理及其工程应用[D].西安科技大学,2012.
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