Diver masonry without water leakage operation - frogman underwater sealing construction team

Jiangsu Henglong Underwater Engineering Co., Ltd. specializes in underwater engineering, including underwater plugging, underwater salvage, underwater dismantling, municipal water conservancy engineering, track installation and maintenance, underwater exploration, underwater cutting and welding, formwork concrete construction, steel sheet pile cofferdam cutting, sewage pipeline plugging, sewage tank dredging, sedimentation tank cleaning, non drainage sinking of sinking wells and underwater bottom sealing, underwater installation, underwater inspection and maintenance, underwater dredging, port and channel dredging, underwater laying, underwater leak plugging and other diving services.

Diver masonry without water leakage operation - frogman underwater sealing construction teamThe company has diving certificates issued by Shanghai Salvage Bureau and Guangzhou Salvage Bureau, and professional divers perform air diving underwater engineering operations at depths of 0-60 meters (deep-sea underwater operations, Yangtze River underwater operations, inland river underwater operations, reservoir underwater operations, sinking well underwater operations, sewage pipeline underwater operations, underwater culvert underwater operations, mine underwater operations); Cleaning and dredging of water tanks and waterways in water plants and power plants, cleaning and dredging of pump rooms, laying of underwater pipelines, cleaning and inspection of underwater trash racks, replacement of gate lifting and lowering, diversion tunnels, reservoir dam bodies, and other maintenance and construction work; Installation and welding construction of underwater steel structures and components: underwater anode welding protection, using underwater wet welding, underwater dry welding and underwater CO2 gas shielded welding, underwater electric oxygen cutting and other methods to carry out underwater installation and dismantling operations on underwater ships, platforms, submarine pipelines and underwater steel structures. Construction of submarine pipelines and underwater optical cables. Underwater dredging, river dredging, pool dredging, underwater concrete repair and pouring construction: Various reinforced concrete structures are constructed underwater in marine, lake, inland river, reservoir and other water areas, using new underwater materials, equipment, and processes for direct underwater construction. Short construction period, strong reliability, and low overall cost.

Underwater sunken ship salvage and underwater object salvage operations. Underwater crack and leakage treatment: Underwater sealing treatment is carried out for cracks and structural leaks in hydraulic structures of reservoir dams in hydraulic power systems. According to the causes, the treatment methods can be divided into two categories: rigid and flexible. Underwater reinforcement: underwater treatment, repair, and reinforcement of underwater steel or concrete structures of hydraulic structures such as reservoirs, dams, coastal inland ports, and docks in water conservancy and power systems. Underwater plugging, sewage pipeline plugging, sewage pipeline plugging, sewage pipeline plugging, sewage pipeline closure engineering, reservoir dam plugging, and gate plugging. Inspection of water tanks, pipes, and reservoirs in municipal drinking water systems Inspection of sewage pipelines, drainage pipelines, and underwater pipelines, inspection of underwater pipelines, and investigation and video evidence collection of underwater pipelines. Inspection of underwater oil pipelines in the ocean; testing. Construction, fabrication, sinking, and sealing of sunken wells.

According to the actual situation on the construction site, during the construction of the rainwater and sewage pipelines in this project, it is necessary to first use the underwater sealing construction method to temporarily seal the pipe head inside the inspection well, and then use a water pump to pump out the water inside the well; According to the water depth of the diving construction area and the regulations for preventing diving decompression sickness, the diving operation time is determined, and divers are prohibited from exceeding the time limit or being fatigued during diving operations. The diving site is equipped with two or more sets of diving equipment, which requires divers to ensure that their diving depth and time do not exceed the limit state when diving.

Divers should remove blockages and pipelines from top to bottom by chiseling out small openings. Once the water level is balanced, they can then remove them from top to bottom. Large excavations are strictly prohibited.

Important equipment for underwater dismantling and installation of underwater plugging operations:

1. Diving equipment;

2. Underwater communication system;

3. Gas supply equipment, etc;

Underwater measurement and recording before underwater sealing:

After diving, the diver slowly descends along the water supply pipe. When the diver is underwater, the personnel on the surface need to carefully measure the pipeline, accurately measure and confirm the diameter of the pipeline for the next step of production and processing, confirm the distance of the pipeline from the underground, propose the next construction plan, and determine the specific sealing materials needed as well as the production and processing of the materials. The total construction time for underwater pipeline sealing is scheduled to be 5 working days, with the main time spent on underwater clamping and sealing. The temporary construction and equipment debugging preparation on site will take half a day, underwater measurement will take half a day, production will take one day, underwater sealing will take two and a half days, and personnel and equipment will be removed for half a day. All work must be prepared in advance to ensure that the entire construction period is within the scheduled time.

Strictly control the diving operation time and cycle of divers to ensure that they can get sufficient rest. Establish safety assurance, organize personnel, appoint dedicated safety officers and team leaders, and implement responsibilities at all levels through safety officers. Conduct a thorough safety technical briefing and have everyone sign in. Diving operations must strictly follow the diving operation procedures.

Strictly abide by safety operating procedures, carry out civilized construction, hang safety prohibition signs, and create a strong safety atmosphere.

Underwater wall sealing: There is incoming water upstream of the pipeline, and the water level will continue to rise after sealing. The service life of pipeline sealing is relatively long, and underwater wall sealing can be used. The construction characteristics are that the construction period is longer than that of airbag sealing, requiring a 12 hour solidification period. Demolition requires frogmen to break it underwater. The advantage of sealing is high reliability, which ensures the safety of underground personnel operations and is the preferred long-term sealing method.

Diver masonry without water leakage operation - frogman underwater sealing construction teamJiangsu Henglong Underwater Engineering Co., Ltd. has an elite team of divers and excellent diving equipment, and has built many high-quality projects. Provide underwater engineering services such as salvage, installation, plugging, cutting, dismantling, plugging, welding, dredging, filming, inspection, and exploration. Since its establishment, the company has undertaken many difficult projects, with a rigorous safety organization, a complete quality assurance system, strict safety measures, and has gained the trust of a large number of owners and enterprises with high quality, fast speed, and good reputation.