浅析高压旋喷桩在软基渠道扶壁的应用

On the Application of High Pressure Jet Grouting Pile in Soft Ground Channel Buttress

黔中水利枢纽一期工程桂松干渠软基渠道采用高压旋喷桩进行扶壁,通过芯样检测和现场挖桩试验,表明采用高压旋喷灌浆后提高了基础的密度,降低了含水量,大幅度提高了软基的抗剪断强度,确保了软基渠道开挖后的稳定性,为渠道进行混凝土箱涵施工创造了条件,同时为在第四系淤泥质黏土进行渠道施工积累了丰富的经验。

Buttress in Guisong trunk channel soft ground channel of Qianzhong Water Conservancy Stage I project was constructed by high pressure jet grouting pile .Core sample detection and site excavation test show that after high-pressure jet grouting is adopted , the ground density is improved , water content is lowered , soft ground anti-shear strength is greatly enhanced, and the stability after soft ground channel excavation is ensured , thereby creating condition for concrete box culvert construction in the channel , meanwhile , rich experience is accumulated for channel construction in quaternary clay silt.