The integrated prefabricated pumping station needs to excavate the pump pit during installation, so the rainy construction has an adverse impact on the installation of the pumping station, and the installation time is best to stagger the rainy season or complete the installation before the rainy season, so as not to delay the construction period.
So, what are the disadvantages of rainy season construction?
1.The excavated slope is prone to landslides or landslides, which make the equipment sag.
2.Abnormal weather such as lightning strikes, heavy rain and storms will cause equipment damage, subversion, etc., and wet welding operations in the rainy season are easy to cause electric shock to construction personnel.
3.Valves, pipes and other equipment are placed in the open air, and heavy rain will cause the equipment to get wet and the property will suffer. If the equipment is not placed properly, there is a possibility of sinking and tipping.
4.In the rainy season, if the circuit connection is not correct, there may be a short circuit, if the equipment is damp, the aging of wires and cables is prone to leakage electric shock accidents.
5.The excavated foundation pit is susceptible to soaking, resulting in inconvenient installation and damage to the equipment.
However, due to the constraints of the construction period, the rainy season construction of many projects is unavoidable, in order to ensure the quality of construction in the rainy season, speed up the construction progress, and prevent the occurrence of safety accidents, necessary preventive measures should be taken.
1. When excavating foundation grooves (pits) or pipe trenches during rainy periods, attention should be paid to slope stability. If necessary, the slope slope can be appropriately slowed down or supported. During construction, the inspection and control of slopes and supports should be strengthened; For the excavated foundation groove (pit) or pipe trench to be set up; The excavation is mainly slowing down the slope, supplemented by support; Work can be stopped when the impact of rain is greater.
2. To prevent the slope from being washed away by rainwater, you can nail steel wire mesh on the slope and smear it with 1250px fine stone concrete, and you can also use plastic cloth to cover the slope.
3. The working surface of the construction during the rainy period should not be too large, and should be completed in stages section by section and piece by piece. When the rainfall is heavy, the earthwork construction in a large area should be stopped; After the foundation is dug to the elevation, the concrete cushion is accepted and poured in time; If the foundation is soaked in rainwater, the necessary excavation and backfill should be done to restore the bearing capacity of the construction, and important or special projects should be completed before the rainy period.
4. In order to prevent the foundation pit from soaking, the drainage ditch and water collection well should be done in the foundation pit and the necessary drainage force should be organized during excavation; The pool and basement located underneath should be carefully considered when constructing. If it is not well thought out in advance, when it rains heavily after watering, it will often cause accidents in the basement and pool.
5. The earthwork backfilled before the rain should be rolled in time and a certain slope should be formed on the surface, so that the rainwater can be automatically discharged.
6. For the earthwork piled up on the construction site, measures should be taken to prevent rainwater erosion around. For example, stones are placed around to prevent the earthwork from being washed by rainwater into the excavated foundation groove (pit) or pipe trench, or to bury some completed foundations.