Underwater cutting is a common method for sealing the pipe mouth of municipal inspection wells, in which the underwater cutting of steel casing has high safety and reliability, and is widely used in municipal engineering. This article will introduce the technical requirements and operation process of underwater cutting of steel casing, and its advantages, disadvantages and scope of application.
1. Technical requirements.
The technical requirements for underwater cutting of steel casing include the following aspects:
1.Preparation before cutting: Before the underwater cutting of the steel casing, the cutting equipment needs to be inspected and debugged to ensure the normal operation of the equipment. At the same time, the cutting area needs to be cleaned and inspected to ensure the smooth progress of the cutting work.
2.Selection of cutting equipment: Underwater cutting of steel casing requires the use of professional underwater cutting equipment, such as underwater cutting guns, cutting knives, etc. It is necessary to choose the appropriate cutting equipment according to different cutting needs and engineering requirements.
3.Operator training: The underwater cutting of the steel casing needs to be carried out by professional operators, so it is necessary to train and assess the operators to ensure that they have the corresponding skills and qualities.
4.Safety measures: When the steel casing is cut underwater, corresponding safety measures need to be taken, such as wearing wetsuits, using safety ropes, etc., to ensure the safety of operators.
Second, the operation process.
The operation process of underwater cutting of the steel casing is as follows:
1.Preparation: inspection and commissioning of the cutting equipment, cleaning and inspection of the cutting area.
2.Dive: The operator wears a wetsuit and breathing apparatus, and uses a safety rope to slowly dive to the cutting position.
3.Fix the steel casing: Fix the steel casing at the position that needs to be cut to ensure the stability and verticality of the steel casing.
4.Cutting: Use an underwater cutting gun and cutter to cut the steel casing, and choose different cutting methods and cutting speeds according to your needs.
5.Inspection: After the cutting is completed, the cutting quality and the condition of the steel casing need to be checked to ensure that the cutting effect meets the requirements.
6.Float: The operator slowly floats up and cleans the cutting area.
3. Advantages, disadvantages and scope of application.
The underwater cutting of the steel casing has the following advantages:
1.Safe and reliable: The underwater cutting of the steel casing can avoid the risk factors of traditional cutting methods, such as high-altitude work, high temperature, etc., and ensure the safety of operators.
2.High efficiency: The use of professional underwater cutting equipment can greatly improve the cutting efficiency and shorten the engineering cycle.
3.* The underwater cutting of the steel casing can obtain better cutting quality and accuracy, which is conducive to improving the overall quality of the project.
At the same time, the underwater cutting of the steel casing also has the following disadvantages:
1.High cost: Underwater cutting of steel casing requires the use of professional equipment and personnel, so the cost is high.
2.High technical requirements: The underwater cutting of the steel casing requires professional operators and technical support, and the requirements for the technical level are high.
3.Limited scope of application: The underwater cutting of the steel casing is suitable for underwater operations such as pipe mouth plugging of municipal inspection wells, and may not be applicable to other types of projects.
To sum up, the underwater cutting of steel casing has a good application prospect as a safe and reliable method for plugging the pipeline mouth of municipal inspection wells. In practical application, it is necessary to choose the appropriate cutting equipment and operation method according to the specific situation, and pay attention to safety measures and quality control.