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我院旋喷注浆技术组在1988年4月完成“长沙机床厂工程师宿舍楼”的地基加固工程后,又于7、8月间用旋喷注浆技术加固了长沙建筑机械研究所整机试验室已施工基础下部具有高压缩性、低强度等特点的软弱土层,解决了由于该土层不宜作天然地基的问题。总计打钻孔301.9米,旋喷成桩60根,累计旋喷总长257.9米。在现场旋喷试验桩
The rotary jet grouting technology team of our institute completed the foundation reinforcement project of the Changsha Engineer’s Engineer Dormitory Building in April 1988, and reinforced the Changsha Construction Machinery Research Institute with jet grouting technology in July and August. The soft soil layer with the characteristics of high compressibility and low strength has been applied in the lower part of the laboratory to solve the problem that the soil layer should not be used as a natural foundation. A total of 301.9 meters of boreholes were drilled, and 60 piles were spin-sprayed. The total length of the spin-blowing was 257.9 meters. Rotary spray test pile in the field