Bailingzhen

Bailingzhen

Bailingzhen is a static product left over from the Japanese rule era. It provides water for Xinshe, Dongshi, Shigang and other areas. It is the water for life in Xinshe area. It has the effect of water for people's livelihood and irrigating fertile fields.

summary

At that time, it was a major project. Whenever there were mountains and valleys, tunnels and water bridges had to be built along the way. It was different from the water tunnels in plain areas. It can be said that "tunnels are dug in the mountains, bridges are built in the rivers". It has become a symbol of local people's yearning for the source of water and a living teaching material of history.

history

In the era of Japanese rule, Taiwan opened up the Danan sugarcane seedling cultivation center in the Danan area of Xinshe township. In view of the shortage of water in the local soil, the Japanese ordered the governor's office of Taiwan to design the water conservancy facilities in Xinshe area in 1927. The project is called "irrigation works of tananzhuang sugarcane seedling cultivation Institute in Taizhong Prefecture". It started in December 1928 and was completed in May 1932. It was tested in September of the same year. Water was officially supplied on October 14 of the same year. There is a "monument to the completion of bailingzhen backwater irrigation project".

Post earthquake impact

On September 21, 1999, a large earthquake damaged and deformed the pipeline of bailingzhen, collapsed the tunnel aqueduct, and the dilapidated bailingzhen couldn't bear the strong earthquake damage, which caused 52% of the whole line to be damaged. However, it also aroused the consensus of community residents. Therefore, the "bailingzhen community overall Construction Promotion Association" was formed to undertake the mission of bailingzhen protection and gather community consensus The lifeline is guarded by bailengzhen community, and the new culture festival of Xinshe Township, bailengzhen Culture Festival, is launched. In 2003, people from all walks of life began to call on people to know and love bailengzhen. Only then can more people pay attention to this old town. In September 2001, Taichung county government listed No.2 inverted siphon as "Taichung County historical building.".

Repair status

The water intake and water outlet of bailingzhen were uplifted by 2.2 meters and 1.6 meters respectively by the earthquake. The No.1 inverted siphon was rebuilt on site, and the No.2 inverted siphon was only built next to the original inverted siphon, forming a historical landscape of coexistence of the old and the new. The normal water supply is affected by the elevation of the terrain, and the water storage capacity of the water intake grit chamber is affected by the silting and the original design. The water intake and grit chamber are reconstructed, and many aqueducts in the pipeline collapse. For example, aqueduct 8 is reconstructed into a red steel arch bridge beside 95-1 highway, and the restoration project was completed in May 2003.

structure

The total irrigation area of Bailing canal is 788.24 hectares. The main line is from bailing highland with an altitude of 554.99 meters (552.94 meters before the 921 earthquake) to yuanhori with an altitude of 531.5 meters and a drop of 23.49 meters. The total length of the canal is 16.6 kilometers. The irrigation area is expanded from yuanhori to malipu, shuidiliao, niaochangtou, aishankeng and Danan. There are 7 large tunnels and 15 small tunnels, totaling 22. There are three inverted siphons in this canal, namely, acunxi, chuotongkeng and aishankeng. They are numbered No. 1, No. 2 and No. 3 respectively. Among them, No. 2 inverted siphon is the largest in scale and can be called the largest water conservancy facility in the Far East at that time.

source

In 1954, Tianlun power plant (now dajiaxi power plant) was set up in Bailing area of Heping township. The Guguan dam affected the water intake of the channel. Therefore, the water intake was set up on the opposite bank of the power plant for water intake. Therefore, the channel began to be divided into two parts for water intake

Part of the water is taken from the local stream of Dajia River to intercept the current and divert it into the channel.

It is mainly from the tail water of the power plant, passing through the bottom of dajiaxi River and connecting with this channel.

Inverted siphon

Inverted siphon is the use of potential energy up fall, accumulated kinetic energy to promote water flow, to reach the south bank smoothly pushed to the north bank, not to the channel water will be counter current or stagnation, its name is because of the inverted siphon. Near the inverted siphon, beside the middle 95-1 highway, there is a description for people to read. There are three inverted siphons in this channel. Besides the inverted siphons due to the terrain, they also have the function of partial pressure. The No.2 Inverted Siphon across the chutengkeng river has the largest drop of 90 meters, with a diameter of 0.135 meters and a total length of 346.9 meters. It is the same as the No.1 inverted siphon and belongs to steel water pipe (No.3 inverted siphon is a cement concealed pipe).

Address: Taichung

Longitude: 120.83186334641

Latitude: 24.168649992727

Chinese PinYin : Bai Leng Zhen