茂名港博贺港区西防波堤修复断面稳定性试验研究

Stability test study on repair section of west breakwater in Bohe port area of Maoming Port

茂名港西防波堤采用抛石斜坡式和沉箱直立式相结合的形式,因2015年台风"彩虹"对防波堤0+270—0+650区段造成损坏严重,致使外坡大量块石被冲刷,重新恢复原貌施工难度较大,为此需在破坏后的基础上对防波堤断面进行修复。通过断面物理模型试验对修复方案的稳定性进行验证和优化,最终确定的修复方案为-2.0 m护面戗台上采用2~3 t块石进行加护,堤顶采用11 t扭王字块体护面全掩护。

The west breakwater in Maoming Port is composite type with rubble mound and vertical caisson. Breakwater 0 ＋270~0＋650 section was severely damaged after typhoon ＂ Mujigae＂ attack. In the outside slope of breakwater, a mass of rock was accumulated due to typhoon, which made the restore construction of breakwater become difficult. So the breakwater section should be repaired on the basis of damage. We verified and optimized the stability of the repair plan through physical model test of the cross section. The final repair plan is to use 2~3 t rock as armor layer on the-0.2 m shield and breakwater top is covered with 11 t accropode block armor.