Now, no matter what you do, you should pay attention to a mechanized operation. The original prefabrication and installation of the supporting production of the channel has gradually developed to one-time molding of on-site pouring. The anti-seepage effect and the strength of the canal are far stronger than the original manual production, which saves labor and reduces the manufacturing cost. On-site service of Baoying trapezoidal side ditch molding machine for rectangular canal casting molding machine On the basis of the original prefabrication, the side ditch drainage channel has made bold improvement, which solves the steps of prefabrication, such as easy deformation and manual transportation, and can be directly constructed by extrusion and vibration at one time. While introducing foreign technology and equipment for producing cement products, China has also increased the pace of digestion and absorption, independent research and development, and made great progress through the efforts of the whole industry. Product development is the leader, relying on technological progress and innovation to develop all kinds of cement products molds and special molding and demoulding equipment tools. In the past decades, while developing new cement products, the relevant research and design institutes, production enterprises, special cement products molds and supporting equipment machinery manufacturers in the cement products industry have cooperated closely, carrying forward hard work, being more self-reliant, and through technology introduction, digestion and absorption and production practice. We are constantly innovating in the machinery of drainage channels, and after several years of efforts, we have found a way to make drainage channels with Chinese characteristics. 1. If the drainage channel is to be made well, the material selection is indispensable On-site service of Baoying trapezoidal side ditch molding machine for rectangular canal casting molding machine

The main choice of cement is that the quality must pass, the relevant tests must be qualified, the label is clear, the manufacturer is formal, not superstitious, and reference is made to word of mouth and customer satisfaction. Commonly used cement grades are 325 #, 425 # or 525 # ordinary portland cement or slag cement. Cement should not be stored in the open air. Once it is stored for more than three months, it needs to be degraded. On-site service of Baoying trapezoidal side ditch molding machine for rectangular canal casting molding machine Sand. Sand as raw material is often used nearby after considering various factors. The selection criteria of sand are qualified hardness, clean, pure and free of impurities. The existence of soil must be below 3%. If the soil content is large, it may directly affect the quality of drainage channel. If you want to improve the smoothness, fine sand can be used. On-site service of Baoying trapezoidal side ditch molding machine for rectangular canal casting molding machine Stones. The use of stones should also be eliminated through selection. Generally speaking, it should be a gravel head with high hardness, no smoothness, horns and friction surface. The size should meet the building standards and be cleaned. Choose 0.5~1 cm stones, so that the finish effect is beautiful. Water. The requirement of water is not high, but it is required that water with chemical pollution, sea water and large soil content cannot be used. The impurities and chemical substances contained in the water will change the internal characteristics of concrete drainage channels.

And timely check slot into the next working procedure construction. Each construction operation section should be backfilled with earthwork of about 50 meters: since the installation elevation of U-shaped groove of irrigation canal is higher than that of fields on both sides, it is necessary to fill soil before installing irrigation canal groove. During earthwork backfilling, it is proposed to use manual rammer to tamp. During filling construction, a removable steel formwork shall be made according to the designed filling section. After placing the steel formwork at the filling site according to the designed elevation, soil materials shall be filled into the formwork manually, and then tamped with manual wooden rammer. After the compaction degree meets the design requirements, the formwork can be removed, and the next layer of soil shall be backfilled with sand cushion: after foundation trench acceptance and cross-section filling.

2. Construction requirements On-site service of Baoying trapezoidal side ditch molding machine for rectangular canal casting molding machine Inspection and data investigation should be carried out first in the design and repair of the canal, and it is not allowed to ditch and bury at will. When trenching, a specially customized bucket can be used, which can make the trenching size more accurate and avoid excessive waste of concrete.

Setting-out of cast-in-place anti-seepage canal with one-step molding shall be carried out according to the planning and structural dimensions. Mechanical or manual mold training shall be adopted, and the size of the mold shall be trimmed by using a large sample plate. It is required that the mold training shall be tamped and compacted in layers, with a layer thickness of not more than 20cm and a dry bulk density of not less than 1.55t/m3. After some soil forms are formed, there will be accumulated water inside, and construction should be carried out after less water. On-site service of Baoying trapezoidal side ditch molding machine for rectangular canal casting molding machine

In the process of construction, the raw materials shall be sampled and inspected in batches. The mixture ratio of materials used shall be checked and rechecked at any time, and each procedure of construction shall be strictly checked and accepted. The weighing deviation of various materials in construction shall be 2% for cement, 3% for yellow sand and 3% for gravel.