Hydraulic Control Technology for Double-deck Gate of a Control Sluice for the Yangtze-Hanjiang River Diversion Project

doi:10.11988/ckyyb.20240663

Abstract

Abstract:

Shihua sluice serves as the control hub for the Water Diversion Project from the Three Gorges Reservoir to the Hanjiang River. A double-layer gate layout is employed to address key technical challenges in hydraulic control such as high-head and long-pressurized water conveyance. Numerical calculations and hydraulic model tests were conducted to explore the hydraulic control technologies in the double-layer control gate. A one-dimensional and three-dimensional coupled mathematical model simulates the hydraulic transition process resulting from the opening and closing of the control gate, providing essential boundary conditions for engineering design. Physical model test analyzes the rationality of the control gate shape. Findings indicate that the maximum and minimum pressures throughout the system comply with relevant regulations. Parameters such as water flow patterns and pressure distribution are normal, and the shape configuration is appropriate. Overall, the design scheme for the Shihua sluice is effective. Its layout and our research methods offer reference for similar projects.

Key words: double-deck gate, long distance water delivery, hydraulic transition process, hydraulic control, Shihua sluice, Water Diversion Project from the Three Gorges Reservoir to the Hanjiang River

CLC Number:

TV68

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LIU Yun-jia, YOU Wan-min, ZHANG Lei, PAN Tian-wen. Hydraulic Control Technology for Double-deck Gate of a Control Sluice for the Yangtze-Hanjiang River Diversion Project[J]. Journal of Yangtze River Scientific Research Institute, 2024, 41(10): 101-109.

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URL: http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20240663

http://ckyyb.crsri.cn/EN/Y2024/V41/I10/101

Figures/Tables 22

Fig.1 Longitudinal profile of hydraulic control for the Water Diversion Project from the Three Gorges Reservoir to the Hanjiang River

Fig.2 Three-dimensional axonometry of Shihua sluice

Fig.3 One- and three-dimensional local coupling simulation

Fig.4 Node layout of one-dimensional hydraulic system

Table 1 Pipeline parameters of one-dimensional hydraulic system

管道编号	长度/m	直径/m	波速/(m·s^-1)	糙率
0	1 440	10.8	1 200	0.012
1	16 110	10.8	1 200	0.012
2	12 662	10.7	1 200	0.012
3	8 139	10.7	1 200	0.012
4	15 599	10.7	1 200	0.012
5	15 904	10.4	1 200	0.012
6	12 617	10.4	1 200	0.012
7	629	10.4	1 200	0.012
8	14 250	9.7	1 200	0.012
9	12 746	9.7	1 200	0.012
10	2 954	9.7	1 200	0.012
11	16 273	9.7	1 200	0.012
12	3 558	9.7	1 200	0.012
13	13 002	10.0	1 200	0.012
14	2 167	10.0	1 200	0.012
15	15 624	10.0	1 200	0.012
16	48	10.0	1 200	0.012
17	13 612	10.0	1 200	0.012
18	12 896	10.0	1 200	0.012
19	3 285	10.0	1 200	0.012

Table 1 Pipeline parameters of one-dimensional hydraulic system

管道编号	长度/m	直径/m	波速/(m·s^-1)	糙率
0	1 440	10.8	1 200	0.012
1	16 110	10.8	1 200	0.012
2	12 662	10.7	1 200	0.012
3	8 139	10.7	1 200	0.012
4	15 599	10.7	1 200	0.012
5	15 904	10.4	1 200	0.012
6	12 617	10.4	1 200	0.012
7	629	10.4	1 200	0.012
8	14 250	9.7	1 200	0.012
9	12 746	9.7	1 200	0.012
10	2 954	9.7	1 200	0.012
11	16 273	9.7	1 200	0.012
12	3 558	9.7	1 200	0.012
13	13 002	10.0	1 200	0.012
14	2 167	10.0	1 200	0.012
15	15 624	10.0	1 200	0.012
16	48	10.0	1 200	0.012
17	13 612	10.0	1 200	0.012
18	12 896	10.0	1 200	0.012
19	3 285	10.0	1 200	0.012

Table 2 Parameters of surge chamber in one-dimensional hydraulic system

调压室编号	底部高程/m	截面面积/m²	高度/m
1	137.47	942.21	47.53
3	127.35	857.66	285.15
4	123.28	989.21	334.72
6	120.52	801.26	364.48
7	110.01	860.52	231.99
10	109.09	1019.16	232.91
12	103.07	618.65	126.93
14	95.68	605.95	189.32
18	65.09	975.06	67.91
19	68.40	523.87	111.60
20	73.07	460.24	86.93

Table 2 Parameters of surge chamber in one-dimensional hydraulic system

调压室编号	底部高程/m	截面面积/m²	高度/m
1	137.47	942.21	47.53
3	127.35	857.66	285.15
4	123.28	989.21	334.72
6	120.52	801.26	364.48
7	110.01	860.52	231.99
10	109.09	1019.16	232.91
12	103.07	618.65	126.93
14	95.68	605.95	189.32
18	65.09	975.06	67.91
19	68.40	523.87	111.60
20	73.07	460.24	86.93

Fig.5 Coupling boundary

Fig.6 Coupling with partial overlapping

Table 3 Working condition of transient process

工况编号	闸阀操作	进口水位/m	出口水位/m	备注
1	先10 min关底孔平板门,之后的50 min关中孔弧门	173.3	86.5	最大水头差正常关闭
2	先50 min开中孔弧门,之后的10 min开底孔平板门	143.3	86.5	进口低水位正常开启
3	先50 min开中孔弧门,之后的10 min开底孔平板门	173.3	89.5	出口高水位正常开启

Table 3 Working condition of transient process

工况编号	闸阀操作	进口水位/m	出口水位/m	备注
1	先10 min关底孔平板门,之后的50 min关中孔弧门	173.3	86.5	最大水头差正常关闭
2	先50 min开中孔弧门,之后的10 min开底孔平板门	143.3	86.5	进口低水位正常开启
3	先50 min开中孔弧门,之后的10 min开底孔平板门	173.3	89.5	出口高水位正常开启

Fig.7 Water head distribution along the system under working condition 1

Fig.8 Change of flow velocity in the lock chamber under working condition 1

Fig.9 Changes of water head and flow rate at the entrance and exit sections of lock chamber under working condition 1

Fig.10 Water head distribution along the system under working condition 2

Fig.11 Change of flow velocity in the lock chamber under working condition 2

Fig.12 Changes of water head and flow rate at the entrance and exit sections of lock chamber under working condition 2

Fig.13 Water head distribution along the system under working condition 3

Fig.14 Change of flow velocity in the lock chamber under working condition 3

Fig.15 Changes of water head and flow rate at the entrance and exit sections of lock chamber under working condition 3

Table 4 Calculation results of key parameters under various working conditions

工况	闸前			闸后				水位波动稳定时间/min
工况	最高水位/m	最大压强/ (mH₂O)	最小压强/ (mH₂O)	最高水位/ m	最低水位/ m	最大压强/ (mH₂O)	最小压强/ (mH₂O)	水位波动稳定时间/min
最大水头差正常关闭工况(工况1)	196.35	121.35	—	—	80.21	—	2.45	>200
进口低水位正常开启工况(工况2)	—	—	2.07	—	—	—	—	约100
出口高水位正常开启工况(工况3)	—	—	—	104.00	—	9.45	—	约80

Table 4 Calculation results of key parameters under various working conditions

工况	闸前			闸后				水位波动稳定时间/min
工况	最高水位/m	最大压强/ (mH₂O)	最小压强/ (mH₂O)	最高水位/ m	最低水位/ m	最大压强/ (mH₂O)	最小压强/ (mH₂O)	水位波动稳定时间/min
最大水头差正常关闭工况(工况1)	196.35	121.35	—	—	80.21	—	2.45	>200
进口低水位正常开启工况(工况2)	—	—	2.07	—	—	—	—	约100
出口高水位正常开启工况(工况3)	—	—	—	104.00	—	9.45	—	约80

Table 5 Physical model test conditions

工况	闸门运行条件	计算调压室水位/ m	消力池水位/ m	过流量/ (m³·s^-1)	中孔开度/m	底孔开度/m
A	关闭过程	108.42	98.49	239.89	8	0
B		113.16	96.81	227.15	4	0
C		148.89	87.21	121.27	1	0
D	开启过程	109.78	104.17	250.60	6	0
E		104.22	93.90	205.85	9	1
F		103.79	103.75	265.00	9	10

Table 5 Physical model test conditions

工况	闸门运行条件	计算调压室水位/ m	消力池水位/ m	过流量/ (m³·s^-1)	中孔开度/m	底孔开度/m
A	关闭过程	108.42	98.49	239.89	8	0
B		113.16	96.81	227.15	4	0
C		148.89	87.21	121.27	1	0
D	开启过程	109.78	104.17	250.60	6	0
E		104.22	93.90	205.85	9	1
F		103.79	103.75	265.00	9	10

Table 6 Flow patterns in stilling pool under various working conditions

工况	射流水体			稳流池末端水面
工况	最大潜距/m	最大潜深/m	气泡溢止点/m	波动幅度/m	波动周期/s	漩涡状况
A	80.0	间歇性触底	110	1.88	1.2	浅表漩涡
B	70.0	触底	110	2.00	1.2	偶见浅表漩涡
C	58.5	间歇性触底	110~149	1.60	0.7	间歇性吸气漩涡
D	80.0	距底部5 m	98	3.00	1.1	未见漩涡
E	70.0	间歇性触底	90~95	1.10	1.0	未见漩涡
F	60.0	间歇性触底	100~118	1.00	1.3	偶见浅表漩涡

Table 6 Flow patterns in stilling pool under various working conditions

工况	射流水体			稳流池末端水面
工况	最大潜距/m	最大潜深/m	气泡溢止点/m	波动幅度/m	波动周期/s	漩涡状况
A	80.0	间歇性触底	110	1.88	1.2	浅表漩涡
B	70.0	触底	110	2.00	1.2	偶见浅表漩涡
C	58.5	间歇性触底	110~149	1.60	0.7	间歇性吸气漩涡
D	80.0	距底部5 m	98	3.00	1.1	未见漩涡
E	70.0	间歇性触底	90~95	1.10	1.0	未见漩涡
F	60.0	间歇性触底	100~118	1.00	1.3	偶见浅表漩涡

Fig.16 Flow patterns in the stilling pool with jets under various working conditions

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