Dual fluid injection pump main technical characteristics 1, single-cylinder double-acting, reciprocating piston, enabling the two liquids suction. 2, hydraulic drive pump high-pressure injection pump grouting machine reliable high pressure injection pump pictures, pumping high pressure 3, the original commutation mechanism, there are special requirements of the workplace (Ex) can also be applied 4, compact structure, suitable for small spaces Tianjin-strong high-pressure pump works construction, factory-made and develop a high level of domestic series of high-pressure pump, high-pressure mud pump and in cooperation with Water Machinery Plant Laizhou high jet overhead trolley. What is the high pressure jet grouting pile triple tube technology: by improving ordinary single pipe high pressure rotary jet grouting nozzle design small high-pressure injection pump, achieved in the implementation of the case can not afford to drill two media are different nozzle aperture alternating injection, to achieve the desired respective medium jets, to expand the pile diameter, improve efficiency purposes. Introduced its nozzle design and operating principle, on-site construction process and results.