介绍: DK317+206~DK331+230段路基工程全长3605.2m,原设计路基声屏障段DK317+780~DK317+859.5 左右侧、DK320+900~DK320+940.77左右侧、DK328+520~DK328+880左侧,计600.5m;新增路基声屏障段DK317+230~DK317+450左侧220m;共计路基声屏障820.5m。