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二重管高压喷射双液浆体施工技术是一种以普通波兰特水泥作固化剂和水玻璃作速凝剂使软土地基快速固化的技术,其关键设备包括高压水泥浆泵、速凝剂泵、分流器、双液输送钻喷杆、钻机和多功能双液喷头等。施工时多功能喷头的上部单喷嘴喷射高压水泥浆切割土体,下部复合式喷嘴同轴喷射高压水泥浆外包速凝剂二次切割土体并与之混合,短时间内形成具有一定强度的加固体,达到在数秒内快速加固软土地基的目的。由于速凝剂水玻璃的存在,该法在含水量丰富的地层中具有较好的加固效果。
Double-tube high-pressure jet of two-liquid slurry construction technology is a kind of ordinary Portland cement as curing agent and water glass as quick-setting agent to quickly solidified soft soil foundation technology, the key equipment, including high-pressure cement pump, quick-setting agent Pumps, splitter, double-liquid delivery drill boom, drilling rig and multi-function two-nozzle. When the construction of multi-function nozzle of the upper single nozzle jetting high-pressure grout cutting soil, the lower composite nozzle coaxial injection of high-pressure slurry outsourcing quick-setting agent secondary cutting soil and mixed with a short period of time to form a certain strength plus Solid, to achieve the purpose of rapid reinforcement of soft ground within seconds. Due to the presence of quick-setting waterglass, this method has better reinforcing effect in water-rich formations.