XPB-20B jet grouting rig walking anchor for wide strata. Can be different according to the different strata of jet grouting pile performance configuration, the maximum output torque of up to 2500N · m, the maximum reach from Stubbs Rick 21kN, to choose carbide drill hole rotary drilling, rotary drilling DTH hammer impact, cone bit drilling methods such as technology, so that in most formations could use this rig directly into the hole later and immediately Churning into the pile. Tianjin-strong high-pressure pump works Churning crawler pile driver, factory manufacture and develop a high level of domestic series of high-pressure pumps, high pressure mud pump and work with Laizhou Water Machinery Plant 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 to achieve the implementation of the two media can not afford to drill in the case were different alternating spray nozzle aperture high shelf spin spray pile driver, to obtain the desired jet various media, to expand the pile diameter, improve efficiency purposes. Introduced its nozzle design and operating principle, on-site construction techniques and effects.