The Tonle Sap River and Mekong River dredging project is the largest water conservancy project undertaken by Henan Provincial Communications Planning & Design Institute Co., Ltd. in Cambodia. It includes the Tonle Sap River from Kampong Ching Yang to Phnom Penh and the Mekong River from kampong Cham to the border between Cambodia and Vietnam (with a total length of about 260 km) and three wharves. With the support of the International Engineering Division and Water Transport & Conservancy Planning and Design Division, the Cambodian branch organized a 14 day field investigation from December 22, 2020 to January 4, 2021, and basically completed the field work.
Tonle Sap River and Mekong River are deep, and the water level difference between rainy season and dry season is as high as 5 ~ 10 meters. There are too many curved sections of the river, the current is turbulent, the river bank is seriously eroded, the bank embankment is steep and there is risk of collapse. Most sections are difficult to get ashore, the sediment deposition in the lower reaches of the river blocks the channel, resulting in the easy grounding of ships, and most ships are reluctant to leave the ship near the end of the year, which greatly increases the difficulty of investigation. Cambodia is a tropical country with high temperature all year round, strong ultraviolet radiation, strong wind in the river, changeable weather, many mosquitoes and poisonous bees on the river, few people within tens of kilometers, and it is difficult to dock on the bank. However, members of the project team are not afraid of the heat, solidarity, overcome difficulties, and strive to carry out site work to ensure the smooth development of the project.