【摘要】 北江大堤1984～1986年按抵御100年一遇洪水标准加固,加固后几年来发现堤基的剩余水头比设计计算值高,某些堤段堤后仍有流土现象,为确保大堤安全,在历史险段进行了垂直防渗施工。该文介绍了北江大堤高压定喷防渗墙的地质条件,论证了垂直防渗的必要性,以及喷灌防渗墙的效果,并对垂直防渗墙的布置提出了商讨意见。更多还原

【Abstract】 The North River Grand Levee was strengthened from 1984 to 1986 according to the standard of coping with floods of 100 year frequency. After reinforcement, residual head in levee foundation is lower than design value. However, soil flow remains in some levee sections. This paper introduces the geological condition of high-pressure shotcrete diaphragm wall of the levee, demonstrates the necessity of vertical anti-seepage and the effect of shotcrete diaphragm wail and discusses its arrangement.更多还原