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4) When mixing and sinking, start the rotary table of the deep mixing pile machine. When the speed of the mixing head is normal, the drill pipe can be mixed while sinking along the guide frame. The sinking speed can be adjusted by the gear, and the working current should not be greater than the rated value. 5) When the grout is mixed and lifted and sunk to the design depth, start the mortar pump, send the grout through the pipeline to the grout outlet of the mixing head, start the mixing pile machine and tighten the chain device after the grout is discharged, and lift the drill pipe while spraying and mixing according to the designed lifting speed (0.50~0.8m/min) to fully mix the grout and soil. 6) Repeat mixing and sinking. After the mixing bit is lifted to 500mm above the pile top, turn off the mortar pump, repeat mixing and sinking to the design depth, and the sinking speed shall be in accordance with the design requirements.

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Properly control the water cement and cement consumption. The water cement ratio is the main factor determining the compactness of concrete, which not only affects the strength of concrete, but also seriously affects its durability. Therefore, strictly control the water cement ratio. Ensuring sufficient cement consumption can also improve the compactness and durability of concrete. The quality of cement pipe depends on these factors, and its quality is very important. The cement pipe with poor quality will expose defects in the process of use, which will affect the normal work.

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Main purpose of cement pipe. 1. It is generally used for drainage pipes of rainwater and sewage in cities and towns. 2. It can be used as the outer sleeve for laying pipelines underground, such as tap water, electric power and telecommunications, and gas forces. 3. Vertical and horizontal drainage and seepage of expressway. Installation and construction steps of cement pipe company. 1. Centerline setting of pipeline: before construction, the starting point, end point, plane break point, longitudinal break point and straight line control center pile of the centerline can be measured on the site according to the center line control point given in the design, and the direction control pile can be set at the appropriate position outside the groove of the starting point and end plane break point, and the pile number can be determined through measurement.

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The center of gravity of the lifting object shall be properly selected, and the power generating point of the electric jack shall be effectively selected. The bottom edge must be paved, and the standard of hard and soft pavement shall be fully considered. Whether to pad the tough wood, whether to place it stably, and avoid weight depression or skew. If the residual oil of the pump body is not enough, the pump must be filled with oil during operation before application. The application of electric oil pump must refer to the manual of electric oil pump. In case of use, the requirements in the key main parameters should be followed very well. Do not be overweight. After arriving at the travel arrangement, pressure should be applied. Otherwise, when the height width ratio of lifting or the lifting tonnage exceeds the requirements, the top of the hydraulic cylinder may have serious oil leakage.

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Before the cement pipe is laid in the ground, professionals should check whether the cement pipe is in good condition and whether there are cracks. Small cracks can be repaired on the spot. If large cracks affect the construction safety, return to the factory and replace the qualified cement pipe. The foundation for pipeline laying must be strictly controlled. The cement pipe manufacturer shall be responsible for the construction and the quality department shall supervise the construction. The problems must be checked layer by layer. The problems shall not be buried underground, otherwise, the quality will directly affect the later construction, and further maintenance will consume more human and material resources. When laying the pipeline, the manufacturer's construction team shall strictly follow the construction scheme, and shall not change the construction scheme or cut corners without authorization, otherwise the hidden dangers of engineering quality left after laying will be seriously affected.

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In the application of cement pipe, after the electric jack is used to jack in the lifting object, the supporting point of the lifting object shall be fixed with the support column immediately to avoid using the electric jack as the support column. The center of gravity of the lifting object shall be properly selected, and the power generating point of the electric jack shall be effectively selected. The bottom edge must be paved, and the standard of hard and soft pavement shall be fully considered. Whether to pad the tough wood, whether to place it stably, and avoid weight depression or skew. If the residual oil of the pump body is not enough, the pump must be filled with oil during operation before application.