Method for blocking drill hole by adopting mixed liquid of cement paste and water glass

The invention discloses a method for blocking a drill hole by using a mixed solution of cement paste and water glass. The material comprises the following components according to a volume ratio: water and cement in a volume ratio of 1: 1; the volume ratio of the cement paste to the water glass is 1: 0.5; comprising the following steps: (1) preparing cement paste; (2) preparing a grouting material; (3) plugging for the first time; (4) the plugging condition is checked; and drilling hole plugging is completed. According to the method for blocking the drill hole through the mixed liquid of the cement paste and the water glass, a double-liquid mode is adopted for injection, and a grouting material formed by an accelerator and a retarder is added when necessary; the defects that the setting time of single-liquid cement paste is long and is difficult to control, and the stone rate is low under the flowing water condition are overcome, the cement grouting effect is improved, the cement grouting range is widened, the