Buildings, Год журнала: 2024, Номер 14(7), С. 1903 - 1903

Опубликована: Июнь 21, 2024

In the process of underground resource extraction, deep rock masses are often subjected to cyclic-heating and water-cooling effects, which cause significant damage mechanical properties rocks. order study degradation mechanism sandstone under cyclic heating water cooling, many fracture experiments have been carried out. The effect cooling at 200 °C on tensile strength mixed-mode I-II toughness was investigated. similarities differences in characteristics deterioration response also examined. Meanwhile, correlation between microstructure macroscopic revealed by observing evolutionary pattern microstructure. findings demonstrate that water-cooling-induced variations exhibit a consistent trend. effective decreases exponentially with increasing cycle times. impact cycles pure mode I is found be more pronounced compared observed mixed modes II specimens. failure sample undergoes transition from abrupt gradual, accompanied an augmented development cracks surface finer fragmentation debris. results this can provide theoretical references for engineering practices such as exploitation geothermal resources hydraulic fracturing.

Язык: Английский