Hole sealing, grouting and water plugging reinforcement method for anchor cable hole in roadway water spraying area

The embodiment of the invention discloses a hole sealing, grouting and water plugging reinforcement method for an anchor cable hole in a roadway water spraying area, and relates to the technical field of coal roadway mining surrounding rock control. Grouting reinforcement can be conducted on an existing anchoring anchor cable hole, so that water spraying of the anchor cable hole is reduced to a certain degree, corrosion of an anchor cable is slowed down, and the anchoring force of the anchor cable in a roadway water spraying area is enhanced. The hole sealing, grouting and water plugging reinforcement method for the anchor cable hole in the roadway water spraying area comprises the steps that a grouting hole is obliquely drilled in the periphery of an existing anchor cable hole in a top plate of the roadway water spraying area towards the interior of the anchor cable hole, and the grouting hole communicates with the anchor cable hole; a grouting pipe and a plugging pipe are inserted into the grouting hole, wherein an annular space is formed between the inner wall of the plugging pipe and the outer wall of the grouting pipe; a high-water-content rapid-hardening expansion material is poured into the anchor cable hole through the annular space in the plugging pipe; and after the high-water-content rapid-hardening expansion material is solidified, grouting is conducted in the deep area in the anchor cable hole. The reinforcement method is suitable for grouting reinforcement of the anchor cable hole in the water spraying area of the weakly cemented soft rock roadway.