Slope Protection
2020
MAELALOS DISTRICT - CHIANGRAI PROVINCE PROVINCE - Thailand
DEPARTMENT OF RURAL ROAD (DOR), THAILAND
BRIDGE AND RIVERBANK PROTECTION AT KOK RIVER
Before construction (October 2007)
Durin construction (November 2007)
During construction (December 2007)
BRIDGE AND RIVERBANK PROTECTION AT KOK RIVER_3
BRIDGE AND RIVERBANK PROTECTION AT KOK RIVER_4
Problem
A bridge was constructed across 50 m width of Kok river at the northern part of Thailand. Strong current from the river could cause severe damage to the bridge if it is not protected properly. The bridge abutment which is located at the river bank must be protected from erosion. The surrounding area at the bottom of the bridge pillar must also be protected to prevent under ground scouring.
Solution
The Department of Rural Road (DRR) with the assistance from Maccaferri technical team came up with erosion protection system using Maccaferri gabion and reno mattress. The combination of Maccaferri reno mattress and Maccaferri non woven geotextile was installed at the bridge abutment and also along the river bank as erosion protection. Gabion was installed at the toe of the riverbank as toe protection against scouring. Due to the 1V:1.75H slope, a proper securing was provided to the reno mattress to prevent sliding of the structure.