Dunzhe Qi
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View article: Construction Risk Assessment of Biogas Layer under Shield of Subway Tunnel
Construction Risk Assessment of Biogas Layer under Shield of Subway Tunnel Open
The risk factors in the construction of subway shield tunnels have complex and variable characteristics. To address the impact of these characteristics in the evaluation process, a risk assessment method for subway tunnel shield tunneling …
View article: Investigating the Double-Fissure Interactions of Hydraulic Concrete Under Three-Point Bending: A Simulation Study Using an Improved Meshless Method
Investigating the Double-Fissure Interactions of Hydraulic Concrete Under Three-Point Bending: A Simulation Study Using an Improved Meshless Method Open
Hydraulic concrete is prone to cracking and interactive propagation under complex stress, threatening its structural integrity and service life. To address limitations of traditional numerical methods (e.g., mesh dependency in FEM) and imp…
View article: Effect of Subsoil Replacement in Frost-Sensitive Areas on the Frost Deformation of Channel
Effect of Subsoil Replacement in Frost-Sensitive Areas on the Frost Deformation of Channel Open
The water content of the subsoil is one of the main factors affecting the subsidence of the channel bank slopes, the looser the soil quality of the bank slopes, the greater the water content, the greater the deformation of the channel bank…
View article: Research on Sediment Laden Flow Characteristics in Water Conveyance System
Research on Sediment Laden Flow Characteristics in Water Conveyance System Open
In the long-distance water conveyance channels or pipelines of sediment laden flow, due to the change of the flow discharge, there may be different levels of siltation condition, and regular dredging work needs to be carried out. If the wa…
View article: Study on Critical Velocity of Sand Transport in V-Inclined Pipe Based on Numerical Simulation
Study on Critical Velocity of Sand Transport in V-Inclined Pipe Based on Numerical Simulation Open
The Yellow River has a high sand content, and sand deposition in the pipelines behind the pumping station occurs from time to time. It is of great significance to reasonably predict the critical velocity of the small-angled V-inclined wate…
View article: Study on Setting Elevation of Double-Suction Centrifugal Pump Based on Cavitation Characteristics
Study on Setting Elevation of Double-Suction Centrifugal Pump Based on Cavitation Characteristics Open
Setting elevation is an important factor affecting the safe operation of pumps, and the empirical calculation method in engineering cannot fully reflect the cavitation characteristics. In this paper, numerical simulation of cavitation in d…
View article: Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump
Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump Open
The double-suction centrifugal pumps installed along the Yellow River in China face serious sediment erosion due to the high sediment content which causes the poor operation efficiency of the pump units. The particle motion characteristics…