Drilling deep wells and stone wells in Nanjing Drilling wells in Nanjing Drilling deep wells and drilling stone wells in Nanjing Drilling dewatering wells and air-conditioning wells

Welcome to consult! The company has strong technical force and advanced equipment. It has two chief engineers, three senior water geology engineers, six engineers, eight drilling engineers, 19 drilling technicians, and 30 technical workers who have been engaged for more than eight years. Mechanical model: three water well drills of type [], four water well drills of type [], six water well drills of type [], two rock drilling machines [] (can take meter depth []), eight water well drills of type [], water well drill of type [] Jiutai, meeting the water consumption of enterprises and institutions [] tons/hour, light well point dewatering equipment [] sets, deep well dewatering pump units. This well can provide direct water supply to industrial production and has a wide range of uses for bathing and leisure centers. It can also be used in the breeding industry, farmland irrigation, as a central air-conditioning configuration in large shopping malls and hospitals, and as an emergency backup water source for firefighting in various enterprises and units. This well is a must-have for all enterprises and institutions. It is warm in winter and cool in summer. It is inexhaustible and inexhaustible. The water output of a good well can reach [] tons or more per hour (depending on demand). The water source is definitely taken from the water layer tens or even hundreds of meters below the ground. The water quality is clear and pure. A deep well can not only solve the emergency of water shortage, but also save a lot of tap water and sewage fees, bring double economic benefits to the enterprise, and truly achieve the purpose of long-term benefit from a single investment. , Basic principles for determining well point layout The plane layout of the well point system should be determined based on the plane shape and size of the foundation pit, required precipitation depth, groundwater flow direction and aquifer permeability coefficient, etc. Generally speaking, when the width of the foundation pit is less than 1 meter and the precipitation depth does not exceed 1 meter, a single row of well points should be arranged upstream of the groundwater. Arrange a row of well points on each side. When the foundation pit area is large, adopt an annular or polygonal closed arrangement. The corners of the closed well points shall be within a range of not less than 1 meter on each side of the main pipe / to /. The distance between the well point pipe and the foundation pit wall should not be smaller than . meters, the filter pipe of the well point main pipe should be buried meters below the suction depth to avoid air intake. To make full use of the pump's suction capacity, the pump axis should be flush with the main pipe. , Precautions for using the well point system. After the well point riser is buried and connected to the horizontal pipe and pumping equipment, a test pumping must be performed first. Only when there is no water leakage, air leakage, siltation, etc., can it be put into normal use. . When using a jet pump, a vacuum gauge should be installed, and regular observations should be made and records should be kept to ensure that the vacuum degree of the well point system should generally be no less than 1. When the vacuum degree is not enough, you should promptly check whether the pipeline or well point pipe is leaking, whether there is any obstruction in the centrifugal pump impeller, etc., and deal with it in time. , The well point should ensure continuous water pumping, and dual power supplies should be prepared. If the water cannot be pumped out or the water is always mixed, or it becomes mixed again after being cleaned, check and deal with it immediately. If the well point pipes are too clogged, seriously affecting the precipitation effect, the well point pipes should be backwashed one by one with high-pressure water or pulled out and reburied. . After the basement construction is completed, the well point system can be dismantled only after it has passed the anti-floating stability check, meets the requirements and has been backfilled. All holes must be filled with sand or soil. . Measures to control the harm of dewatering at well points to the surrounding environment should give priority to the use of water-retaining support structures, such as deep mixing piles, steel sheet piles, concrete cast-in-place piles or underground continuous walls, and bury dewatering well point risers as much as possible. On the inside of the retaining wall (on the side of the foundation pit), the depth of the well point riser should be shallower than the depth of the retaining wall. , Reasonably determine the depth of the riser at the well point and control the precipitation curve. When there are no buildings, pipelines or roads near the foundation pit, the water level at the well point in the pit should be reduced to 3 meters below the bottom of the foundation pit. When there are buildings or pipelines nearby, the burial depth of the well point main pipe can be appropriately increased to ensure that the foundation pit is not damaged. It is appropriate for quicksand to appear. , Properly control the water pumping volume or the vacuum degree of the centrifugal pump. When excavating the foundation pit, use the maximum pumping volume or vacuum degree for dewatering at the well point. After the cushion, pile cap, and basement floor are completed, the pumping volume or vacuum degree can be appropriately reduced to reduce the dewatering outside the foundation pit. The curved surface should be controlled within a small range as much as possible, but water level observation wells should be set up inside and outside the pit to control the water level in a timely manner
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