1979年煤科院上海所引进一台由美国流体工业公司生产的超高压水射流切割试验台。84年8月开始采用美国制造0.46mm宝石喷咀进行岩石切割试验。第一次以2500kgf/cm~2高压水射流切割抗压强度为2026kgf/cm~2的黑色花岗岩,试块移动速度为6mm/s,切槽深度为8mm;第二次以2000kgf/cm~2切割抗压强度为1500kgf/cm~2的大理石,试块横移速度为50mm/s,槽深8mm,槽宽1mm。以上切槽平整 In 1979, Shanghai Academy of Coal Science and Technology introduced a UHP water jet cutting test bed produced by the American fluid industry company. 84 years August began using the United States made 0.46mm gem nozzle for rock cutting test. For the first time, black granite with a compressive strength of 2026kgf / cm ~ 2 was cut with a high pressure water jet of 2500kgf / cm ~ 2. The moving speed of the test block was 6mm / s and the grooving depth was 8mm. Cutting the compressive strength of 1500kgf / cm ~ 2 marble, the test block traversing speed of 50mm / s, groove depth 8mm, groove width 1mm. The above grooving is flat