病害路基地基加固处理工程实例

Engineering Example of Ground Treatment of Subgrade of Disease Area

针对胶济客运专线某段路基沉降加大的状况,提出以潜孔钻机开孔、以高压旋喷注浆加固地基的方案。在施工过程中,对高压旋喷注浆的工序进行合理打破常规的优化,既保证了既有铁路的运营安全,也保证了处理线路的质量,有效解决了本工程的难题。优化后的方案经过实践的检验,有进一步研究分析和推广的价值。

To prevent the settlement of subgrade of Qingdao-Jinan only-passenger-transported railway, a scheme was suggested that the Down-hole drill was used to penetrate the filled soil, and high pressure jet grouting technique was adopted for reinforcing and strengthening the foundation. In the course of construction , the procedure of high pressure jet grating was optimized, this method does not only ensure the safety of the existing railway operation, but also give a guarantee to railway quality under construction, then the engineering problem was solved effectively. After the optimum scheme was testified, it would have the value to be analyzed further and extended.