The paper calculates the hydraulic transition in drainage system of single-suck convective super-lift submersible pump by characteristic line method,and offers reliable technical information for emergency drainage design of deep mine.

Concrete construction of high-lift long-distance pumping;

Multi-index evaluation of system aging for multi-grade and high-lift pumping station;

Through the cement concrete pumping construction experience of Xinjiang Sai-Guo Mountain Freeway,the paper introduced the mix design and construction technology of high-lift,long-distance pumping cement concrete in detail,and put forward the quality control measures.

Increasing-flow design on small-flowrate high-head high-speed centrifugal pumps;

The paper introduces the protection measures of pumping-off water hammer in the design of high-flowrate high-head long-distance water-delivery booster pump station.

This type of pumps is applicable to tailings delivery with high head and high flow,which can reduce operating cost and stabilize production flow.

Method of tariff adjustment according to customer power factor of village high lift water pump irrigation;