Second West-east And The Western Part Of The Progress Of Building Construction Difficulties -

West-East Gas Pipeline across the snow-capped mountains

Gobi About West-East Gas Pipeline Project

Connect Central Asia natural gas is imported second-line air supply and domestic gas field in Tarim, Junggar field, Turpan-Hami gas field, gas field, and along the central and western regions, eastern and southern China, the Yangtze River Delta, the Pearl River Delta with gas market, an important strategic channel. West-East Gas Pipeline Project in Xinjiang Horgos west, east Shanghai, south to Guangzhou, Hong Kong, across 14 provinces and autonomous regions and special administrative regions, including a trunk and branch lines 8, with a total investment of 150 billion element. Route length 4918 km, diameter 1219 mm, the annual gas transmission capacity 30 billion cubic meters. Full range of the total mileage of more than 8600 km.

West second-line complex and diverse geological conditions along the route through the desert, Gobi, Loess gullies, hills, plains, water network, mountains, submarine and other landforms, control projects up to 20 multiple, Transportation Construction is very difficult working conditions. As the project is large in scale, time required to bear, the construction of natural gas in accordance with second-line "after the first Eastern Western, after the first branch lines," the general idea, Zhongwei, Ningxia things for the community is divided into two organizations Construction . Western Route Horgos ~ Zhongwei section, long 2410 km, the design pressure of 12 MPa; East Route Zhongwei ~ Guangdong, Hong Kong Section, 2477 km long, the design pressure of 10 MPa.

As the introduction of China's first large offshore natural gas pipeline, natural gas projects are included in the national second-tier "Eleventh Five-Year Plan" the construction of major projects. Its implementation, for improving our Energy Structure, promote development of related industries, to promote economic growth, is of great significance.

First, the proportion of clean energy will help improve and optimize energy consumption structure. Per year from Turkmenistan 30 billion cubic meters of natural gas imported, compared with coal can reduce carbon dioxide emissions 130 million tons, 1.44 million tons of sulfur dioxide emissions, dust emissions 600,000 tons, 360,000 tons of nitrogen oxide emissions, optimizing energy structure, important measure to promote energy conservation.

Second, help alleviate the natural gas supply situation, and enhance security of supply of natural gas capacity. Annual 30 billion cubic meters of gas transmission capacity, the equivalent of the national natural gas consumption in 2007, nearly half, to some extent, effective mitigation of natural gas supply and demand.

Third, it helps build the national gas pipeline network backbone to raise the level of pipeline operations. Compared with developed countries, China's pipeline network, inadequate infrastructure, imperfect contact line construction, underground gas storage and other ancillary works not perfect, the total length of gas pipelines have been built less than 30,000 km. Second West-East completed, the realization of the supply of natural gas pipeline gas supply diversification, transmission and distribution network and the national pipeline network construction has important significance.

Fourth, materials and equipment will help promote industrial innovation in China, led the national machinery, Electronic , Metallurgy , Building materials and other related industries, and further accelerate the large-scale Compressor , Large-diameter ball valve and other key equipment at home to develop and test the process of industrial applications.

Western part of building natural gas second-line Western part of West-East Gas Pipeline Project, including

Horgos?? Zhongwei route, and the defender?? Jingbian contact line, passing through Xinjiang, Gansu, Ningxia, Shaanxi four provinces, the line really is about 2745 km, Route 2410 kilometers, 335 kilometers contact line. Through the tunnel 10, 36 large and medium rivers, roads, railways and 109, crossed the Gobi desert, loess plateau. Xinjiang Tianshan only Guozigou a focus on the seven tunnels on which control projects guozigou 1 # tunnel length 3080 m, harsh natural conditions. The western part of the total length of the tunnel 10 to 7926 meters. Pipeline also crosses national natural beauty?? Sailimu, many times through the Central Asian Railway, with Huo high-speed, fiber and other important facilities in Europe and Asia.

West-East Pipeline Project from February 22, 2008 has started, as of June 4, 2009, the majority of Oil The builders have overcome the large scale, construction period is short, more technical difficulties, poor geographical geological conditions, construction tasks are arduous, and many other difficulties, only 15 months time, high-level western part of the completion of Second West-East pipeline the main welding task. 224,000 Western Pipeline Welded Joints, welding qualification rate of 98.73%, reached the world advanced level of pipeline construction, the end of production for the western part of the foundation.

Western part of West-East Gas Project and difficult second-line

1, complex and diverse geological features.

Pipeline through the desert, Gobi, Loess gullies, hills, plains, mountains and other landforms, both mountain stands, inaccessible restricted life, there are endless plateau, no one to both the Gobi desert, another high cost of land densely populated areas, transportation, construction and harsh conditions, safety and environmental protection pose serious challenges.

2, extreme weather conditions. Pipeline route area is inland climate, four distinct seasons, drought, Fengshahenda, intense solar radiation, evaporation, precipitation less, air dry. Hundreds of Turpan and Hami areas where pipelines laid along the wind, cold and snowy northern winter, pipeline construction influenced by the climate.

3, the local co-ordination tasks are arduous.

Pipeline means Sailimu other four protected areas and six groundwater resource protection areas; Urumqi rural, agricultural, industrial, mining staggered, external cooperation is difficult.

4, controlling works great difficulty.

Pipeline crossing the northern region in guozigou woman Luo Kenu western Tianshan mountains, narrow valleys, steep slope, at an altitude between 1800m-2600m. This paragraph special geographical environment and climatic conditions, rainfall during the rainy season, the bottom was a large amount of water exchange, currents; winter snow cover, there is frost over 8 months; the effective construction of a very short time, and geological disasters, unusual weather conditions frequent.

by: gaga

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