There is a big gap between China's water conservan

2022-09-21
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There is a big gap between China's water conservancy machinery and developed countries

Guide: relevant information shows that in developed countries, the development of water conservancy machinery has been at the world's leading level due to strong economic strength, huge material foundation and highly industrialized level, and has basically realized the mechanization of engineering construction and maintenance, automation and unmanned management

relevant information shows that in developed countries, due to strong economic strength, huge material foundation and highly industrialized level, the development of water conservancy machinery has been at the world leading level, and has basically realized the mechanization of engineering construction and maintenance and the automation and unmanned management. In contrast, there is a big gap between China's water conservancy machinery and developed countries

1. Large water conservancy construction machinery. In this regard, the gap between China and developed countries is not too large, but due to the limitation of our industrial development level, we mainly buy foreign advanced products. Developed countries mostly adopt the principle of both self-made and outsourcing, and are becoming larger and more efficient. 4 Low temperature tank power supply: 220V50Hz

2. Small and medium-sized water conservancy construction machinery. There is a big gap between China and developed countries in terms of small and medium-sized water conservancy construction machinery, especially in the management and maintenance of small and medium-sized water conservancy projects

3. Engineering construction. In large-scale and large-scale earth excavation operations, bucket wheel excavators are commonly used abroad with belt conveyors to complete the excavation, loading, transportation and unloading at one time, or work together with large-scale tank cars, with very high efficiency. For example, the canal lining is also highly mechanized. A complete set of slope cutting, lining, trimming and curing units are used for joint operation to make its foundation level level, concrete paving, vibration, plastering, joint cutting, trimming and membrane spraying curing completed at one time, which not only ensures the quality, but also saves materials. The layout of the construction site is also very simple. There are almost no temporary facilities. Besides, sand and stones are stacked, materials are stored and concrete mixing is carried out in appropriate terrain outside the construction site, and mixing trucks are sent to the site

such construction makes the whole site very tidy and organized. They attached great importance to the traffic conditions, built the road beside the canal before the main construction, and did not allow the planting of trees. This practice can not only reduce the damage of transportation machinery, but also speed up the progress of the project, and lay a good foundation for the use of general machinery or improved general machinery in the maintenance, maintenance and dredging of future projects. Sewage outlets, various types of trash racks and trash cleaning machines, automatic control gates for equal flow water and diversion control gates are also widely used in the channels

small and medium-sized water conservancy projects in China rarely use complete sets of machinery, channels are rarely lined, there are no parallel roads beside the channels, and a large number of trees are planted on the dams. Especially in recent years, a large number of garbage and floating objects in irrigation and drainage ditches in China have increased, which has brought great difficulties to the maintenance and dredging of various channels, and it is difficult to use general-purpose machinery or improved general-purpose machinery. In order to solve these problems, we have to develop some special machines with narrow scope, small quantity and high price to solve these special situations. There are also many problems in the construction of water conservancy projects in China, such as focusing on the main body, neglecting supporting facilities, neglecting maintenance, management and so on, coupled with the constraints of factors such as the follow-up funds of the project, so that many design standards, such as 3.9, require that the project can not be matched and play a role efficiently, and constantly put forward new demands for the innovative development of the field of medical devices. Most of the management is based on human management, and its automated and unmanned management is relatively lagging behind, with a large gap

4. Water saving irrigation machinery. In water-saving irrigation, developed countries have widely promoted pipe irrigation, sprinkler irrigation, drip irrigation, micro irrigation and other methods since the 1960s, coupled with water-saving measures such as land leveling, canal seepage prevention, surface water storage, drainage and sewage treatment and reuse, and have been reduced from high-pressure sprinkler irrigation system to low-pressure sprinkler irrigation system. The equipment has been manufactured in factory, which is convenient to install on site and reliable to use. And from the first generation of fixed-point water supply, the second generation of mobile water supply, and the third generation of automatic laser distance calibration. Pipelines have also developed from surface to underground. The above-mentioned irrigation machines have been introduced, digested and copied in China since the 1970s. At present, they are all used, but the popularity is still very narrow

5. Flood control and rescue machinery. Flood control and rescue in developed countries mainly adopt high standard engineering measures and non engineering measures at ordinary times. The project usually adopts general-purpose machinery or improved general-purpose machinery for mechanized construction and detection, and the general equipment includes fatigue testing machine and vernier caliper worker. In case of flood (including storm surge of sea water), the method of evacuating personnel is basically adopted, and there are few manual flood control and rescue methods in flood season, while the flood damaged project is rebuilt afterwards. The machinery used is basically general machinery. Therefore, except for some emergency rescue equipment, there are basically no special flood control and rescue equipment. At present, China does not have such strong economic strength, and it is impossible to copy the practices of developed countries, especially the small and medium-sized water conservancy construction machinery with a wide range, large quantity, many varieties and small batches. Therefore, to solve these large-scale problems, we have to rely on ourselves to develop all kinds of water conservancy machinery that meet the needs of China's national conditions. Therefore, promoting the development of water conservancy machinery has become a top priority

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