I. Introduction.
The laying of underwater immersed pipes and the leakage plugging and exploration of reservoir gates are important links in water conservancy projects, which are of great significance for ensuring the normal operation and safety of water conservancy facilities. This paper will introduce in detail the principles, methods, technical requirements and precautions of underwater immersed pipe laying and reservoir gate plugging and exploration, in order to provide reference and reference for related projects.
2. Underwater immersed pipe laying.
1.Principle of laying.
Underwater immersed pipe laying refers to laying pipes underwater at the bottom of water such as river beds, seabeds or lakes to achieve the purpose of underwater transportation or drainage. In the laying process, it is necessary to ensure that the pipeline does not twist, bend, break and other phenomena during the laying process to ensure the normal operation and service life of the pipeline.
2.Laying method.
1) Floating towing method: the pipeline is processed and welded into a certain length of pipe section on the shore, and the pipe section is dragged to the bottom with a floating boat, and then the pipe section is connected by underwater welding technology. This method is suitable for shallow water or areas with slower currents.
2) Immersed pipe method: the pipeline is submerged to the bottom of the water in sections, and then the underwater connection technology is used to connect the pipe sections. This method is suitable for deep water or areas with high currents.
3) Pipe jacking method: use pipe jacking equipment to jack the pipeline to the bottom of the water, and then use underwater connection technology to connect each pipe section. This method is suitable for situations where pipes cross rivers, lakes, and other bodies of water.
3.Technical requirements.
1) The pipeline material should meet the design requirements and have sufficient strength and corrosion resistance.
2) Before the pipeline is laid, a detailed geological survey should be carried out on the riverbed, seabed or lake and other waters to understand the geological conditions and ensure the safety of pipeline laying.
3) Advanced construction technology and equipment should be used in the process of pipeline laying to ensure the quality and efficiency of pipeline laying.
4.Precautions.
1) In the process of pipeline laying, attention should be paid to protecting the environment and avoiding adverse effects on the surrounding environment.
2) In the process of pipeline laying, attention should be paid to safety, and necessary safety measures should be taken to ensure the safety of construction personnel.
3. Reservoir gate plugging and exploration.
1.Plugging principle.
Reservoir gate plugging refers to the sealing of the reservoir gate by various methods to prevent water leakage or leakage. In the process of plugging leakage, it is necessary to have a detailed understanding and analysis of the structure, materials, and operation status of the reservoir gate, and formulate a scientific and reasonable plugging plan.
2.Exploration method.
Before the reservoir gate leakage plugging, the reservoir gate needs to be explored and tested in detail. Commonly used exploration methods include ultrasonic flaw detection, X-ray flaw detection, magnetic particle flaw detection, etc. Through these methods, whether there are cracks, corrosion and other defects in the reservoir gate can be detected, which provides a basis for subsequent plugging work.
3.Technical requirements for plugging leaks.
1) Select appropriate plugging materials and methods to ensure that the plugging effect is good and does not affect the normal operation of the reservoir gate.
2) In the process of plugging leaks, attention should be paid to protecting the environment and avoiding adverse effects on the surrounding environment.
3) In the process of plugging leaks, attention should be paid to safety, and necessary safety measures should be taken to ensure the safety of construction personnel.
4.Precautions.
1) Before the reservoir gate leakage plugging, the reservoir gate should be tested and analyzed in detail, and a scientific and reasonable leakage plugging plan should be formulated.
2) In the process of plugging leaks, attention should be paid to protecting the environment and avoiding adverse effects on the surrounding environment.
3) In the process of plugging leaks, attention should be paid to safety, and necessary safety measures should be taken to ensure the safety of construction personnel.