The pressure distribution of each measuring point of the spiral tube at different speeds shows that the pressure distribution from the measuring point near the soil box to the measuring point in the direction of the soil outlet shows a decreasing trend.
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Theoretical analysis and experiment of pressure distribution and pressure gradient of shield screw conveyor: Taking sandy soil as an example.
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The sentences
The pressure gradient of the plastic fluid-like conditioned soil along the spiral from the soil inlet to the soil outlet will decrease linearly; When the conditioned soil is too hard, that is, the shear stress between the conditioned soil and the spiral structure is too large, the screw conveyor will become clogged, and the pressure field shows an increasing trend along the spiral direction.