The Laboratorial Study of Fracture Energy Release Rate of the Reservoir Ice Layer
The fracture energy release rate , which is the important parameter of ice pressure calculation model that is built on energy balance method, is the fracture mechanics performance of ice material. It is related with these factors such as ice material temperature T, which must be measured by experiment. It is the experimental method of fracture mechanics used in this paper. These ice specimens on the different thickness T were tested with fracture mechanics method at low-temperature testing machine, to obtain the fracture flexibility change rate of ice body which contains pre-crack and the values of under different conditions of T, which could determine fracture energy release rate of ice body during the ice pressure generated, which provide the necessary experimental data to establish ice layer pressure calculation model for the application of energy balance method.
Guangfan Li, Yong Huang and Chaohe Chen
X. Z. Liu and P. Liu, "The Laboratorial Study of Fracture Energy Release Rate of the Reservoir Ice Layer", Advanced Materials Research, Vols. 250-253, pp. 3802-3806, 2011