The West-East Gas Pipeline Project has taken corresponding measures to ensure the safety of the pipeline in terms of anti-corrosion of the spiral steel pipeline, pipeline design and construction, and dealing with complex environments. During the design and construction process of the West-East Gas Pipeline Project, we always choose safe Plumbing issues as a first consideration. According to the natural environment conditions and pipeline reliability requirements along the engineering pipeline, in terms of pipeline anti-corrosion, the combined protection method of external anti-corrosion coating to strengthen the current cathodic protection is adopted. 42 seats. The present situation assessment, prediction assessment, and comprehensive assessment are carried out on the risk of various geological disasters. Divide the risk level, determine the type and degree of danger of major geological disasters, evaluate the suitability of the land, and put forward suggestions on countermeasures and measures to prevent and control geological disasters; The pipelines in high-intensity areas have been subjected to the pipeline seismic check calculation, and the station engineering design is fortified according to the seismic intensity of the area; the preliminary design has carried out the seismic design for 8 active faults intersecting with the pipeline. At the same time, under the relevant provisions of the design code, different design coefficients are adopted to ensure the safety of pipelines and environments passing through different regions. For the complex and difficult sections where the pipeline passes, the design safety factor of the pipeline is partially increased to ensure the safety of the pipeline in the special section. The width of the construction work belt of the West-East Gas Pipeline is 28 meters (plain) and 18 meters (mountainous). To ensure the safety of pipelines passing through large rivers, mountains, and other areas, crossing methods, tunnel crossings, and pipe jacking crossings are adopted respectively. Appropriate pipeline protection measures are taken for different areas where pipelines pass through, such as the desert Gobi in Xinjiang and Gansu. In the area of the Henan-Anhui Plain and the water network in the south of the Yangtze River, pipeline stabilization is the main priority.
During the construction of the West-East Gas Pipeline, great attention was paid to the environmental protection of Yanqian.
The ecological environment along the West-East Gas Pipeline Project is complex and changeable. We carried out the topic of “Research on Ecological Environment Safety, Restoration and Components along the Long-distance Pipeline”, systematically analyzed the relationship between the pipeline construction and the ecological environment along the way, and proposed Requirements for ecological environmental protection and restoration, and drew specific technical charts for ecological environmental protection and restoration. In pipeline construction, establish and improve the QHSE management system of all parties in the project construction, to achieve harmony and unity of pipeline construction and quality, health, safety, and environment. Reduce the damage to the natural environment caused by construction operations, prevent any environmental pollution accidents during work, and discharge various pollutants after meeting the relevant national standards. For example, in the protection of the cultural relics of the Zhongshan Grottoes in Shaanxi Province, where the pipeline passes through, the excavation of pipe trenches has been minimized, the amount of blasting charge has been controlled, and necessary test explosions have been carried out. In the forest area at the top of Dajian Mountain, where the pipeline passes through the lush forests, tunnel construction is adopted in the design, and the investment in pipeline engineering is increased locally to avoid damage to the trees; the Targeted special design was carried out, using lime-soil backfill to widen the cave, construction of intercepting and draining ditches, vegetation, and other works and water conservation measures; in the design and construction, the centralized stacking and protection of waste slag generated by tunnel construction were considered; Appropriate engineering construction measures such as flow drainage, filling and plugging, deep burial, and water blocking walls shall be adopted to ensure the safety of pipelines and reduce soil erosion and other measures. These seemingly small practices have virtually laid a solid foundation for environmental protection, which also creates conditions for pipeline safety.
Post time: Nov-17-2022