Blasting method for suspended roof treatment of underground mine

The invention provides a blasting method for suspended roof treatment of an underground mine, which comprises the following steps of: 1, after a suspended roof is generated by blasting, acquiring relevant parameters of a suspended roof layer; 2, according to the obtained relevant parameters of the suspended ceiling layer, relevant information of blast holes needing to be layered in subsequent normal blast holes is determined, and the relevant information of the blast holes needing to be layered comprises the number of layers and the positions of the layers of the blast holes needing to be layered; 3, based on the determined relevant information of the blast holes needing to be layered, the blast holes needing to be layered are charged with explosives; and fourthly, after charging is completed, the detonating sequence is set, and layered millisecond detonating is conducted according to the sequence from the first row to the second row and from the lower layer to the upper layer behind the suspended roof. The s