底格栏栅坝及沉沙池设计计算
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| 廊道内水头损失计算过程 |
|
| 分段 |
x（m） |
Qcp(m3/s) |
Vcp(m/s) |
A |
b |
hcp |
xcp |
Rcp |
Ccp |
Vcp2△x |
Ccp2Rcp |
△h(m) |
∑△h |
|
| ⑴ |
2 |
0.766666667 |
1.407563025 |
0.544677 |
2 |
0.272338 |
2.54468 |
0.21405 |
30.937 |
3.96247 |
204.862 |
0.01934 |
0.01934 |
|
| ⑵ |
4 |
1.533333333 |
1.62605042 |
0.94298 |
2 |
0.47149 |
2.94298 |
0.32042 |
33.0887 |
5.28808 |
350.811 |
0.01507 |
0.03442 |
|
| ⑶ |
6 |
2.3 |
1.844537815 |
1.246925 |
2 |
0.623462 |
3.24692 |
0.38403 |
34.1026 |
6.80464 |
446.626 |
0.01524 |
0.04965 |
|
| ⑷ |
8 |
3.066666667 |
2.06302521 |
1.48649 |
2 |
0.743245 |
3.48649 |
0.42636 |
34.7021 |
8.51215 |
513.434 |
0.01658 |
0.06623 |
|
| ⑸ |
10 |
3.833333333 |
2.281512605 |
1.680172 |
2 |
0.840086 |
3.68017 |
0.45655 |
35.1 |
10.4106 |
562.472 |
0.01851 |
0.08474 |
|
| ⑹ |
12 |
4.6 |
2.5 |
1.84 |
2 |
0.92 |
3.84 |
0.47917 |
35.3841 |
12.5 |
599.932 |
0.02084 |
0.10557 |
|
|
|
| 廊道计算基本参数 |
|
| Q(m3/s) |
S（mm） |
T（mm） |
P |
μ |
b（m） |
q(m3/s) |
L（m） |
L'（m） |
L（m） |
栅条重量（t） |
|
| 4.6 |
10 |
15 |
0.4 |
0.41 |
2 |
0.499681 |
9.20588 |
11.9676 |
12 |
1.1304 |
|
|
| 各分段流速Vcp计算 |
|
| V0(m/s) |
V(m/s) |
L（m） |
c（m） |
a |
x（m） |
Vcp(m/s) |
q(m3/s) |
△x |
|
| 1.2 |
2.5 |
12 |
0.1 |
0.109244 |
2 |
1.407563 |
0.38333 |
2 |
|
|
4 |
1.62605 |
|
|
6 |
1.844538 |
|
|
8 |
2.063025 |
|
|
10 |
2.281513 |
|
|
12 |
2.5 |
|
|
|
| 廊道水力计算成果表 |
|
| 分段 |
廊道距离（m） |
流量（m3/s） |
流速（m/s） |
廊道水深（m） |
水头损失（m） |
|
| ⑴ |
2 |
0.77 |
1.41 |
0.27 |
0.019 |
|
| ⑵ |
4 |
1.53 |
1.63 |
0.47 |
0.034 |
|
| ⑶ |
6 |
2.3 |
1.84 |
0.62 |
0.05 |
|
| ⑷ |
8 |
3.07 |
2.06 |
0.74 |
0.066 |
|
| ⑸ |
10 |
3.83 |
2.28 |
0.84 |
0.085 |
|
| ⑹ |
12 |
4.6 |
2.5 |
0.92 |
0.106 |
|
|
| 廊道结构计算成果表 |
|
|
廊道距离（m） |
廊道深度（m） |
|
|
0 |
0.3 |
|
|
2 |
0.589 |
|
|
4 |
0.804 |
|
|
6 |
0.97 |
|
|
8 |
1.106 |
|
|
10 |
1.225 |
|
|
12 |
1.326 |
|
|
|
|
|
|
|
|
|
| 设计参数 |
|
Q（m3/s） |
池长（m） |
池宽（m） |
池深（m） |
v(m/s) |
|
|
3.5 |
26 |
6 |
4 |
0.1458333 |
|
|
| 悬沙颗粒级配表 |
| 粒径 |
0.05 |
0.01 |
0.025 |
0.05 |
0.1 |
0.25 |
0.5 |
1 |
2 |
|
| 小于某粒径的沙重百分数（％） |
2.6 |
4.9 |
12.5 |
26.1 |
43.6 |
65.9 |
82.1 |
95.5 |
100 |
|
|
| 沉降率计算 |
|
| d(mm) |
Wmax(mm/s) |
Wmin(mm/s) |
Wi(mm/s) |
αi |
ηik |
△Pi |
ηl |
|
| 2.0～1.0 |
205 |
117 |
158.956971 |
2.3705372 |
0.9999999 |
0.045 |
0.9999999 |
|
| 1.0～0.5 |
117 |
56.7 |
85.0495856 |
2.0274256 |
0.9995406 |
0.134 |
0.9996561 |
|
| 0.5～0.25 |
56.7 |
24.4 |
39.4317203 |
1.6729706 |
0.9471498 |
0.162 |
0.9747117 |
|
| 0.25～0.1 |
24.4 |
6.12 |
14.2466612 |
1.2970453 |
0.5611581 |
0.223 |
0.8111967 |
|
| 0.1～0.05 |
6.12 |
1.67 |
3.66231201 |
0.9235613 |
0.1399434 |
0.175 |
0.6522396 |
|
| 0.05～0.025 |
1.67 |
0.3 |
0.89260451 |
0.6489207 |
0.0254867 |
0.136 |
0.5548243 |
|
| 0.025～0.01 |
0.3 |
0.0667 |
0.16938557 |
0.4282979 |
0.0032283 |
0.076 |
0.510743 |
|
| 0.01～0.05 |
0.0667 |
0.0167 |
0.038925 |
0.2965405 |
0.0005143 |
0.023 |
0.4986945 |
|
|
| 恢复饱和系数αi的计算 |
|
αi |
Wi(mm/s) |
μ*(m/s) |
K |
v(m/s) |
R(m) |
n |
g(m/s2) |
|
|
2.37053722 |
158.956971 |
0.010438 |
1.2 |
0.1458333 |
1.7142857 |
0.025 |
9.81 |
|
|
2.02742564 |
85.0495856 |
|
|
1.67297062 |
39.4317203 |
|
|
1.29704534 |
14.2466612 |
|
|
0.92356129 |
3.66231201 |
|
|
0.64892074 |
0.89260451 |
|
|
0.42829794 |
0.16938557 |
|
|
0.29654051 |
0.038925 |
|
|
| 泥沙粒径与沉降速度关系表 |
|
| 粒径（mm） |
沉降速度（mm/s） |
|
|
水温0℃ |
水温10℃ |
水温20℃ |
水温30℃ |
|
| 0.001 |
0.00037 |
0.00051 |
0.00067 |
0.000832 |
|
| 0.002 |
0.00152 |
0.00206 |
0.00267 |
0.00333 |
|
| 0.003 |
0.00341 |
0.00463 |
0.00601 |
0.00748 |
|
| 0.004 |
0.00604 |
0.00822 |
0.0107 |
0.0133 |
|
| 0.005 |
0.00946 |
0.0129 |
0.0167 |
0.0208 |
|
| 0.006 |
0.0136 |
0.0185 |
0.024 |
0.0299 |
|
| 0.007 |
0.0185 |
0.0252 |
0.0327 |
0.0407 |
|
| 0.008 |
0.0242 |
0.0329 |
0.0426 |
0.0531 |
|
| 0.009 |
0.0306 |
0.0416 |
0.054 |
0.0674 |
|
| 0.01 |
0.0379 |
0.0514 |
0.0667 |
0.0832 |
|
| 0.02 |
0.152 |
0.206 |
0.267 |
0.333 |
|
| 0.03 |
0.341 |
0.463 |
0.601 |
0.748 |
|
| 0.04 |
0.604 |
0.822 |
1.07 |
1.33 |
|
| 0.05 |
0.946 |
1.29 |
1.67 |
2.06 |
|
| 0.06 |
1.36 |
1.85 |
2.4 |
3.17 |
|
| 0.07 |
1.85 |
2.52 |
3.5 |
4.08 |
|
| 0.08 |
2.42 |
3.41 |
4.41 |
5.13 |
|
| 0.09 |
3.06 |
4.19 |
5.55 |
6.18 |
|
| 0.1 |
3.7 |
4.97 |
6012 |
7.35 |
|
| 0.15 |
7.69 |
909 |
11.8 |
13.7 |
|
| 0.2 |
12.3 |
15.3 |
17.9 |
20.5 |
|
| 0.25 |
17.2 |
21 |
24.4 |
27.5 |
|
| 0.3 |
22.3 |
26.7 |
30.8 |
34.4 |
|
| 0.35 |
27.4 |
32.8 |
37.1 |
41.4 |
|
| 0.4 |
32.9 |
38.7 |
43.4 |
48.6 |
|
| 0.5 |
43.3 |
50.6 |
56.7 |
61.9 |
|
| 0.6 |
54.3 |
62.6 |
69.2 |
75 |
|
| 0.7 |
65.2 |
74.2 |
81.2 |
88.5 |
|
| 0.8 |
75 |
85.5 |
93.7 |
102 |
|
| 0.9 |
85.5 |
96 |
106 |
114 |
|
| 1 |
95.2 |
107 |
117 |
125 |
|
| 1.5 |
143 |
160 |
172 |
177 |
|
| 2 |
190 |
205 |
205 |
205 |
|
| 2.5 |
229 |
229 |
229 |
229 |
|
| 3 |
251 |
251 |
251 |
251 |
|
| 3.5 |
271 |
271 |
271 |
271 |
|
| 4 |
290 |
290 |
290 |
290 |
|
| 5 |
324 |
324 |
324 |
324 |
|
| 6 |
355 |
355 |
355 |
355 |
|
| 7 |
383 |
383 |
383 |
383 |
|
| 8 |
409 |
409 |
409 |
409 |
|
|
|
|
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