US 11,708,676 B1Granted

Bottom hole type mudslide blocking dam and dam height calculation method

AssigneeSouthwest Jiaotong University

InventorsWeigang Shen, Xiaoyan Zhao, Gang Luo, YI Liu, Feng Dai, Ning Ma

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Abstract

The present invention relates to the technical field of mudslide prevention and control engineering, and provides a bottom hole type mudslide blocking dam and a dam height calculation method. According to the present invention, a climbing height of the mudslide impacting a bottom hole type mudslide blocking dam can be accurately calculated, so as to guide the height design of a dam body of the bottom hole type mudslide blocking dam, thereby guaranteeing the working safety and the protection capacity of the bottom hole type mudslide blocking dam, and saving the manufacturing cost of the bottom hole type mudslide blocking dam.

Claims8

Dependent claims

A method for calculating a dam height of a bottom hole type mudslide blocking dam, comprising:

acquiring an average flow depth v0 and an average flow velocity h0 of the mudslide at a target position, wherein the target position is a position where a bottom hole type mudslide blocking dam is to be built;
calculating Fr according to Fr=v0/√{square root over (gh0)}, wherein Fr is a dimensionless Froude number, g is the gravitational acceleration, and g=9.8 m/s2;
calculating B according to B=Hc/h0, wherein B is a relative clearance height, and Hc is a base clearance height of the bottom hole type mudslide blocking dam;
and
establishing an equation
(
h
1
h
0
)
3
-
(
h
1
h
0
)
2
-
(
2
⁢
F
r
2
+
1
)
⁢
(
h
1
h
0
)
+
1
+
2
⁢
F
r
2
(
2
⁢
B
2.5
-
B
5
-
B
4
+
B
4
(
h
1
h
0
)
)
=
0
and calculating h1, h1 being a climbing height of the mudslide, and determining the dam height of the bottom hole type mudslide blocking dam according to h1.

66 more elements

Dependencies are inferred from the claim text.