Patent ID: 11920472
Assignee: ANHUI CHINA RAILWAY ENGINEERING TECHNOLOGY SERVICE CO., LTD
Field: Other special machines (Mechanical engineering)
Classification: CPC E  F | IPC E

Claim 2:
3. The millisecond time control method for excavation blasting of a tunnel as claimed in claim 2, wherein the establishing a millisecond blasting model, comprises:
establishing an explosive model, a rock model, and an air composition material model by using an ANSYS software;
wherein a size of the explosive model is 8 centimeters (cm)×12 cm×1000 cm, a size of the rock model is 5 meters (m)×10 m×15 m; and
wherein a surface of the explosive module in contacted with the rock model is constrained by a symmetrical plane constraint condition, a side face of the explosive model is constrained by a non-reflecting boundary condition; and
wherein a top of the explosive model is constrained by a restraint condition set based on a vertical stress of a ground building.