Patent ID: 11940366
Assignee: ZHEJIANG UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. The testing method of the centrifugal testing device for simulating ground subsidence induced by buried pipeline leakage and infiltration according to claim 7, wherein in the preparation stage, a direction of the crack at the front end of the damaged pipeline model is adjusted by changing a connection angle between the damaged pipeline model and the chamber partitioning plate; and in the simulation test stage, the crack at the front end of the damaged pipeline model is resized by adjusting a squeezing force of the rubber plug at the end of the electric push rod on the crack:
when a normal service condition is simulated, the electric push rod is controlled to drive the rubber plug at the end to extend, allowing the rubber plug to tightly contact with the crack, such that the crack is completely blocked; and
when a damaged crack condition is simulated, the electric push rod is controlled to drive the rubber plug at the end to retract, and a degree of detachment between the rubber plug and the crack is controlled by adjusting an amount of retraction, thereby resizing the crack.