High Head slurry pumps, made of high-chromium alloy, serve as essential devices for transporting dredged mud from rivers, lakes, and tunnel boring machines to various destinations. While their application is wide-ranging, this article focuses on their performance in subway construction projects. High head slurry pumps offer multiple advantages in dredging slurries. First of all, it is made of high-chromium alloy, which has excellent wear resistance and can effectively handle mud containing larger particles. Secondly, high head slurry pumps have high lift capabilities and can transport slurry to distant destinations to meet the needs of long-distance transportation. In addition, the high head slurry pump operates stably and reliably, which can improve construction efficiency and reduce the possibility of failure.
Subway construction involves excavating tunnels through different types of soil and rock formations. As the excavation progresses, large amounts of mud and slurry are generated, requiring efficient and reliable pumping systems for their removal. High head slurry pumps are specifically designed to handle the demanding conditions encountered in subway construction.
The performance of high head slurry pumps in subway construction is crucial for maintaining project timelines and ensuring smooth operations. These pumps exhibit a high-pressure capability, allowing them to transport the abrasive and viscous slurry over long distances and significant elevation changes. Their robust construction with high-chromium alloy materials ensures resistance to wear and corrosion caused by the abrasive nature of the transported materials.
1. The Importance and Challenges of Metro Construction Transportation
Subway transportation can effectively alleviate the huge traffic pressure caused by the growth of urban population and vehicles, enhance urban competitiveness, and lay a solid foundation for building a “national central city”. However, the large amounts of mud generated during subway construction became a significant problem that required efficient handling and dredging. In this context, the application of high head slurry pumps has become a solution.
2. How to Solve Mud Problem in Subway Construction by High Head Slurry Pump?
In subway construction, there is a problem of mud treatment. According to statistical data, the city’s existing reservoir capacity is about 8 million cubic meters, while the shield soil storage capacity is less than 2 million square meters. Due to the requirements of subway construction technology, foaming agents and polymer compounds need to be added during the shielding process. However, if the slurry of these projects is not properly handled, it will cause secondary pollution and have a non-negligible impact on the ecological environment.
3. How To Clean Mud with High Head Slurry Pump?
For efficient handling and dredging of slurry, high head slurry pumps are proposed as a solution. Taking Jiangsu Province as an example, the subway shield mud transportation contract there requires mud to be transported to a designated location 3,000 meters away. After understanding the geological survey report, it was found that the soil and mud contained a large number of larger particles of pebbles and granite, which limited the delivery distance of ordinary water pumps and made them prone to wear and tear. Based on the customer’s construction requirements, the high head slurry pump model 300GN-50 was recommended to improve construction efficiency.
4. Electrical Equipment Parameters and Operation Control
During the communication, the customer provided the parameters of the electrical equipment at the construction site. After calculation, the transformer load reaches a maximum of 470KW, and the power of the high head mud pump we selected is 315KW. Considering the different concentrations of mud, we recommend water dilution when the sediment concentration is high to improve transportation efficiency. In order to protect the transformer, both high-head mud pumps and high-pressure supply pumps use variable frequency start control cabinets to reduce the load at the start-up moment.
5. Specifications of High Head Slurry Pump
Flow Capacity: 1500m³/h
Pump Head: 50m
Power: 315kW
Rotation Speed: 730rpm
Conclusion
The mud treatment problem in subway construction has an important impact on both the construction progress and the ecological environment. Slurry pumps are the solution for efficiently handling and dredging slurry. It combines wear resistance, high lift capabilities, versatility and automated controls to handle slurries containing large particulate matter and deliver them to distant destinations. The application of high-head slurry pumps can improve construction efficiency, ensure construction progress, and reduce equipment failures and downtime. In the future, with the continuous advancement of science and technology, slurry pumps are expected to play a greater role in subway construction and other engineering fields.
Among the prominent manufacturers in this field, OCEAN PUMP stands out as a leading company renowned for its expertise in designing and producing high-quality slurry pumps. OCEAN PUMP’s slurry pumps are specifically engineered to tackle the demanding requirements of subway construction. These pumps possess a unique combination of features, including exceptional wear resistance, high lift capabilities, versatility, and advanced automated controls. They excel in handling slurries containing large particulate matter and are capable of delivering them to distant destinations with precision and efficiency.
