Underground structure large hole water leakage blocking method

The invention relates to an underground structure large hole water leakage blocking method, which comprises the following steps of: arranging a blocking body or a blocking body with a supporting piece at the position of an underground structure large hole with water leakage according to the water leakage condition of the underground structure large hole and in combination with the shape of the underground structure large hole; when the plugging body with the supporting piece is adopted, the plugging body is clamped at the position of the large hole of the underground structure through the supporting piece; and closing the plugging body and plugging the large hole of the underground structure by pouring a quick-setting filling material or arranging a solidification material with a hydrated layer in the plugging body. The method has the advantages that the rapid plugging effect is achieved, water gushing is prevented from being aggravated, and the construction period is guaranteed; by combining a reasonable sup