###### Abstract
[PERSON] (2017) studied the injection effect of penetration grouting using penetration packers, and suggested that if PC packers and penetration grouting are always applied to high-level ground, such as reservoirs, penetration effects can be achieved that meet the performance standards of reservoir order grouting. In recent years, research has been conducted on ground improvement and liquefaction prevention methods that use grouting [14]. [PERSON] (2020) studied penetration grouting, using ultrafine particle cement on sandy soil ground, as well as the stabilization of ultrafine particle cement by injecting it into the ground [15]. [PERSON] (2021) studied the effect of the relative density and confining pressure of the ground on cyclic stress or liquefaction, through the GMDH method; they used the database obtained through CPT and presented a state parameter [16]. [PERSON] (2022) studied the effect of drainage agents, such as gravel and rubber, on the liquefaction of sandy soil during an earthquake through a 1-G Shaking table test [17]. [PERSON] (2009) studied the reinforcement effect of liquefied ground, when applying penetration grouting, using a 1-g shaking table; for comparison, the experiment was divided into reinforced and not reinforced ground. The results showed that when the ground was reinforced through penetration grouting, the ground acceleration, excess clearance water pressure, and structure subsidence decreased, which was very effective in suppressing liquefaction [18]. [PERSON] (2010) attempted to suppress the sinking of a structure due to liquefaction by solidifying existing structures with a chemical solution using a centrifuge experiment. If the depth of solidification was greater than that of a liquefaction-prone layer, ground reinforcement did not significantly affect acceleration [19]. [PERSON] (2012) studied the effect of ground improvement on subsidence to prevent liquefaction by conducting case analyses and centrifuge experiments. In a case study of approximately 100 areas, areas where the ground was improved to prevent liquefaction had less subsidence than areas where it was not. In addition, the results of the centrifuge experiments were based on data from the ground improvement area. If the ground acceleration was small, it was most effective to improve up to 70% of the total ground, whereas if the ground acceleration was large, the entire ground should potentially be improved [10]. [PERSON] (2016) studied a method for efficiently assisting penetration grouting using ultrafine cement; this method is applicable to the foundation of existing structures with a high possibility of liquefaction. Although the amount of cement was small, injecting cement alternately with water resulted in longer solidification and penetration, depending on the sample [20]. [PERSON] (2020) presented the low pressure injection effect and applicability of colloidal nanosilica chemicals for liquefaction by conducting various studies on particle size, shear strength, viscosity, and shear wave velocity on the reinforcing materials; this was to ensure the economic feasibility and safety of developing ground reinforcement materials such as colloidal nanosilica [21]. [PERSON] (2021) conducted a study on the presence or absence of ground reinforcement by creating a loose ground with a relative density of 35% and a dense ground with a relative density of 65%; this was to check the liquefaction prevention effect of cement grouting [22]. [PERSON] (2021) conducted a study on the effect of colloidal silica grouting chemicals on the ground properties of liquefied ground; they reviewed the compressibility, ground strength, and rigidity of the ground under static and seismic load conditions. Based on these results, the points to be pursued in future research on colloidal silica grouting were discussed [23].