Through the freezing engineering examples of the main shaft of the Balasu Mine, the wind shaft of the Bayangaole Mine, and the main shaft of the Dahaize Mine, the thickness of the frozen wall, the freezing depth, and the freezing wall intersection time in the western Cretaceous strata were statistically summarized to select reasonable freezing parameters. The average opening spacing of the main freezing hole was 1.333 m, the average opening spacing of the anti-flake hole was 2.426 m, and the average watering time of the shallow hydrological hole was 37 d. According to the drainage time of hydrological hole and the maximum hole spacing of aquifer, the average development speed of frozen soil cylinder was 27 mm / d. The diameter of freezing pipe should be larger than 140 mm to ensure the effective formation of frozen wall. The study provided an example reference for similar strata in the same area in the future.
林 波. 西部白垩系地层冻结设计基本参数的选取[J]. 煤炭与化工, 2022, 45(11): 17-20.
Lin Bo. Selection of basic parameters for freezing design in the Cretaceous strata of Western China. CCI, 2022, 45(11): 17-20.