[Explanation] In the Cangzhou section of the Beijing-Hangzhou Grand Canal, a world cultural heritage site, there is a 200-meter-long dam. Unlike ordinary dams, its dam is built with lime soil and glutinous rice slurry. It has been used for a hundred years. The body is still very strong.
This dam is located in Lianzhen, Dongguang County, Hebei Province. It is one of the dangerous sections of the Grand Canal, where floods have broken many times in history.
At the end of the Qing Dynasty, a local squire, surnamed Xie, donated money to purchase a large amount of glutinous rice from the south, organized manpower to cook porridge with glutinous rice, mixed with lime and soil to build a dike. To commemorate the squire’s charitable deeds, the dam was named "Xiejiaba" .
[Contemporary] Li Tianfeng, a staff member of the Cultural Protection Institute of Dongguang County, Hebei Province. The dam has a total length of 218 meters. According to the measurement at the time, the height was 5 meters and the thickness was about 3.6 meters. Underneath, rows of cypress piles were driven into the ground. The top is a rubble cushion, and the top is rammed layer by layer. The glutinous rice porridge is made of lime, loess, and clay, and they are rammed layer by layer. Now you look at this point, there are There are whitish things and glutinous rice grains.
[Explanation] According to Li Tianfeng, adding glutinous rice when building a dam is to enhance the anti-corrosion property of the dam body, and to use the viscosity of the glutinous rice to increase the firmness of the dam.
In the past, this technique was mostly used to build city walls and rarely used to build river embankments.
Since the "Nuomi Dam" was built, there has never been a breach of the embankment here.
[Contemporary] Li Tianfeng, a staff member of the Cultural Protection Institute of Dongguang County, Hebei Province, provided a physical material to study the technology of water conservancy facilities at that time, which also reflected the wisdom of the people at that time, (is) the crystallization of the wisdom of the people.
[Explanation] More than one hundred years have passed. The reporter saw on the scene that the main body of Xiejiaba was basically well preserved, and weathering appeared in some exposed areas.
According to Li Tianfeng, Dongguang County carried out a renovation and reinforcement project for the dam in 2012, imitating the ancient method using notoginseng lime soil and glutinous rice slurry to ramming. At that time, the construction staff could not even use a hammer to nail the wooden wedges in, so they had to use electric drills. hole.
[In the same period] Li Tianfeng, a staff member of the Cultural Protection Institute of Dongguang County, Hebei Province, had to hang the block and drill the eye with an electric drill when he was repairing it. When drilling at that time, it was very difficult to drill with an electric drill. (The dam body) was better than the current one. Concrete is also hard.
[Explanation] In 2006, Xiejiaba was approved by the State Council to be included in the sixth batch of national key cultural relics protection units.
In June 2014, the Grand Canal of China was officially listed as a world cultural heritage, and Xiejiaba has also become a shining pearl in this precious cultural heritage.
[In the same period] Li Tianfeng, a staff member of the Cultural Protection Institute of Dongguang County, Hebei Province, now our county has invested a lot of funds to carry out environmental treatment on it (Xiejiaba), (including) the improvement of surrounding environmental facilities. It is built into a historical and cultural tourist spot.
Reporting from Ai Guangde, Liu Guang and Cangzhou, Hebei
Editor in charge: [Wang Kai]