Method for measuring viscous mud-flow internal flow velocity and impact force spatial distributions
A measurement method and spatial distribution technology, which are applied in the field of impact force spatial distribution measurement and the average velocity of viscous debris flow, which can solve problems such as the inability to solve the spatial distribution of velocity and the inability to measure velocity.
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[0057] Example one
[0058] Such as Figure 1 ~ Figure 3 As shown, the method of the present invention is used to measure the spatial distribution of debris flow velocity.
[0059] A certain debris flow ditch is a medium-sized debris flow ditch with an altitude of 1820m~3500m and a drainage area of 12.2km 2 . The ditch has repeatedly erupted with sticky debris flows, which seriously threatened the safety of local people's lives and property. In order to reduce the debris flow disaster, it is planned to build a through-type sand dam project in the debris flow circulation area, and it is necessary to calculate and measure the spatial distribution of the average velocity of the debris flow.
[0060] Step S1, preliminary preparation
[0061] figure 1 It is a top view of the calculated section position (the arrow shows the direction of movement of the debris flow). Set any section I-I on the debris flow channel, calculate and / or measure the average longitudinal drop of the debris flo...
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[0084] Example two
[0085] On the basis of Example 1, the spatial distribution of the impact force of the viscous debris flow was further measured.
[0086] Step S5: Determine the impact force F of the debris flow at any point S δ :
[0087] Substitute various parameters into equation 5 to calculate the impact pressure F at any point S(x,y) of debris flow in section I-I δ ,Have:
[0088]
[0089] In this embodiment, the section I-I is analyzed by a rectangular section, and the value of λ is 1.33.
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