Introduction of salty copper railway line?

xian-tong railway line is a railway connecting Xianyang and Tongchuan, which is located in Shaanxi province. It starts from the eastern end of Xianyang Station in Xianyang City in the south, passes through Jingyang, Sanyuan, Fuping and Yaozhou, and reaches Tongchuan Station in Tongchuan City in the north. Construction started in June 1939, and the track was laid to the mine station in December 1941. In the spring of 1942, the whole line was opened to traffic, with a total length of 135 kilometers. Taoyuan Tunnel was completed in 1946. The reconstruction began in November 1958 and was completed in 1962. The investment was 2 million yuan, and the transportation capacity was increased from 5 million tons to 7 million tons. After that, four yield stations were added, and the throughput increased to 13 million tons.

Historical significance

The opening of the Xian-Tong Railway has brought prosperity to Weibei in wartime. Cotton in Jingyang, wheat in Sanyuan Fuping, small coal mines in Tongchuan, Yaoxian and Fuping, limestone and other resources have been vigorously developed, and the output and quality of Yaozhou porcelain in Huangbao have also been improved. At the same time, cement plants and paper mills have been established in Huangbao area, which has made great contributions to the formation of the basic industrial pattern in Weibei and Tongchuan areas and effectively improved the distribution of industrial pattern in Shaanxi. Due to the rapid rise of the road transport market and the convenience and rapidity of high-speed passenger transport, passenger transport between Yan Liang and Tongchuan on the salty copper line ended in 1993, making Tongchuan the only prefecture-level city in Shaanxi Province without railway passenger transport. With the start of Guantian Economic Zone and the development of Tongchuan city in the future, Xi 'an-Tongchuan intercity railway planning has been put on the agenda, and the launch of the railway will surely drive Tongchuan to integrate into Guanzhong urban agglomeration and develop rapidly.

I. route survey and design

In 24 years of the Republic of China (1935), Longhai Railway Administration proposed to establish a joint venture with Shaanxi provincial government to build the Xian-Tong railway branch line (hereinafter referred to as Xian-Tong railway branch line) and develop Tongguan (now Tongchuan, the same below) coal mine, but it was not implemented. War of Resistance against Japanese Aggression's central and coastal provinces have fallen one after another, and the coal sources are decreasing day by day, while coastal factories have moved westward, and the demand for coal has soared. In the spring of 28 years (1939), the road construction plan was revisited. The funds are raised by the Ministry of Communications of the Republic of China and the Longhai Railway Administration.

In the spring of the 25th year of the Republic of China (1936), the Longhai Railway Administration organized a survey team to make a preliminary survey, and put forward two plans for the route direction: Line A starts from Weinan Station, crosses the Weihe River, takes Fuping and enters the Convergence Officer of Yaoxian County, with a length of about 1 kilometers, and there is a Weihe Bridge. The transportation distance of this line is short and the construction cost is low, but the construction of Weihe Bridge is difficult. Line B starts from Xianyang Station, passes through Gaozhuang in Jingyang, crosses the Jinghe River, crosses the Qinghe River around Sanyuan City, crosses the Shichuan River through Yanliang, reaches Fuping and folds into Yaoxian County to Tongguan. The line is 135 kilometers long. All the places they pass through are rich areas in Guanzhong, with rich cotton and wheat production. Longhai Railway Administration and local people all advocate Line B, so they decided to adopt Line B..

The branch line of Xian-Tong Railway leads from the eastern end of Xianyang Station, runs northeast along the north bank of Weihe River, passes through Changling and Xiaojiacun to Bijiaya by deep cutting, goes back to the south bank of Jinghe River to set up a station in Gaozhuang, leaves the station and crosses Jinghe River in the north, crosses Yongledian to Sanyuan Station, turns eastbound after Sanyuan, avoids the northwest highland, and crosses the Qinghe River by Dulicun Station to Yanliang Station. Later, it will go up along the east bank of Qishui River via Fuping and Zhuangli to Yaoxian Station. At this point, the terrain began to be steep, and a longitudinal slope was set up to climb according to the natural slope of 14‰. Pass through Taoyuan Tunnel via Huangbao Station and reach the terminal mine station (later changed to Tongchuan Station).

the total length is 135 kilometers. Passing through Xianyang, Jingyang, Sanyuan, Gaoling, Fuping, Yaoxian, Tongchuan and other counties and cities.

technical standard: the maximum slope is 15 ‰; The minimum radius of the curve is 3m; The bridge is a wooden bridge; Rail 37 ~ 42kg per meter; The top width of embankment is 5m, and the slope of embankment is 3∶2.

ii. Line construction

Baotian Xiantong Engineering Office of Longhai Railway Administration is responsible for the construction of the branch line of Xian-Tong Railway. The whole project adopts the bidding system. Construction started in June in 28 years (1939) and was completed in December in 3 years (1941). In the spring of 31 (1942), it was officially opened to traffic. When the two tunnels are not completed, temporary bypass lines will be used to bypass the traffic.

The branch line of Xian-Tong Railway has completed 5.2 million cubic meters of subgrade earthwork, and 49 bridges, all of which are temporary bridges with wooden frames. Jinghe Bridge, with 1 holes of 4-meter wooden raft. Qinghe Bridge, with 21 holes of 4-meter wooden raft, is 17 meters high. Shichuanhe Bridge, 4-meter wooden raft with 75 holes. Qishuihe Bridge, 3 ~ 4.5m wooden raft with 18 holes. Two tunnels were built, with a total length of 437.1 meters, located 128 kilometers from Huangbao to Taoyuan Station (later changed to Yigucun Station, now Tongchuan South Station). The contract was awarded in May 29 (194) and completed in 35 (1946). There are 13 stations, except Yaoxian Station, which is a brick structure, and the rest of the station houses are adobe walls with brick piers or cave buildings. Set up 1 pair of communication copper wires and 3 iron wires.

The rail materials of the branch line of Xian-Tong Railway are all 37-42kg old rails and accessories per meter removed from the eastern section of Pinghan Railway and Longhai Railway, with various styles and different lengths. Except for some old sleepers removed from the eastern section of Longhai Railway, most sleepers are purchased from Huaxian, Weinan and Baoji. Ballast laying is not standard enough, and only sand is laid in some areas. Track-laying project started at the end of the 28th year of the Republic of China (1939) and reached the mine in December of the 3th year of the Republic of China (1941).

III. Reconstruction of the line

The construction of the branch line of Xian-Tong Railway is simple because of its rough construction, small curve radius, large slope, low driving speed and serious line diseases. In the 37th year of the Republic of China (1948), on July 18th, the Jinghe River flooded and destroyed the bridge, and the traffic was suspended for 57 days. On August 25th of the same year, the Shichuan River Bridge suffered from water damage, and the 113km-129km temporary bridge and subgrade were destroyed, and the traffic was suspended for 25 days.

after the founding of the People's Republic of China, the scale of coal mining in Tongchuan area has expanded, and the number of mines and traffic have increased greatly. In December 1956, the Ministry of Railways decided to transform the Xian-Tong branch line, and the third railway survey and design institute undertook the survey and design.

main technical standards for line reconstruction: line grade: Xianyang-Yanliang is the first-class trunk line, and Yanliang-Tongchuan is the first-class special line; Steam locomotive traction, traction fixed number, Jiefang 6 upward 16 tons, downward 55 tons, new KD upward 2 tons, downward 7 tons, old KD upward 16 tons, downward 55 tons; The effective length of the station arrival-departure line is 85m from Xianyang to Yanliang, with 15m reserved and 65m from Yanliang to Tongchuan, with 85m reserved;

line capacity: 15.5 pairs; The minimum curve radius is 5 meters from Xianyang to Yanliang and 3 meters from Yanliang to Tongchuan; The load of the bridge is Grade I-26 in the lower part and Grade I-22 in the upper part; Rail 43 kg/m; Signal equipment: mechanical arm signal, electric lock interlock, electric road sign block.

The branch line reconstruction of Xian-Tong Railway is basically changed locally according to the original route direction. Dismantle all wooden temporary bridges and replace them with reinforced concrete beam bridges. The Jinghe Bridge was changed from the upstream to the downstream, with a length of 16.94 kilometers, turning from the north side of Bijiaya to the east and crossing the Jinghe River. The total length of the new bridge is 338.2 meters, with 1 holes and 31.7 meters. It is a prestressed reinforced concrete beam bridge. Set up Jinghe station, abandon Gaozhuang station, and return to the original line after Yongle store new station; Qinghe rebuilt the new bridge with a total length of 17.1 meters, which is a 3-hole 31.7-meter reinforced concrete beam bridge with a length of 2 kilometers. Shichuan River was rebuilt into a new bridge, with a total length of 218.1 meters, 12 holes and 16 meters of reinforced concrete beam double-track bridge, and the rerouting length was 2.53 kilometers. Qishui River is rebuilt into a new bridge, with a total length of 61.2 meters, which is a 3-hole 16-meter reinforced concrete beam bridge with a length of .8 kilometers. Improve the Taoyuan Tunnel and connect the two tunnels together, with a total length of 55 meters. Add four stations: Balidian, Bujiagou, Meijiaping and Xiaobeibao. After transformation, the length of the line is 134 kilometers.

Due to the development of coal mines, the special mine lines of Sanlidong, Wangjiahe and Wangshiao are connected. In 1959, Qiaoxin Line was extended to Hongtu Town, Jin Huashan, Yakou, Dongpo and other mines. In the former site of Taoyuan Station, it was converted into Yigu Village Marshalling Station (later changed to Tongchuan South Station), with 17 tracks and river line, and a locomotive turning-back section. The reconstruction project of Xian-Tong branch line was undertaken by Northwest Railway Engineering Bureau and Xi 'an Railway Bureau. It started in November 1958 and was completed in 1962. 1.67 million cubic meters of earth and stone were completed. Three large bridges, seven medium and small bridges and 48 culverts were built. The main track is 38.99 kilometers long and the station line is 17.48 kilometers long. Build a house of 21,82 square meters. The total budget is 19.4 million yuan, with 2 million yuan completed, with an average of 148, yuan per kilometer.

after the transformation, the traffic volume of the salty copper branch line increased from 5.9 million tons before the transformation to 7.35 million tons.

In p>1973, the branch line of Meiqi Railway was built, and Meijiaping Station was changed into an industrial marshalling station, and Yaoxian to Meijiaping and Meijiaping to Zhuangli were built as double tracks.

for more exclusive information about the construction industry, please pay attention to the micro-signal of the construction network in real time.

for more information about ghostwriting of tenders and improving the winning rate, click on the customer service at the bottom for free consultation.