CN108589634A - A kind of method and its device for realizing beheaded river one-way flow using tide - Google Patents

Abstract

The invention discloses a method and a device for realizing the one-way flow of the Duantou River by using tides. At the center of the Duantou River with a river width of B, set up a water barrier, the start of the water barrier is B/2 away from the end of the Duantou River, and the end is at the junction of the Duantou River and the tidal main channel; There is a check gate between the two sides of the end of the water barrier and the bank of the Duantou River, one of which is a water inlet stop gate, which is opened at high tide to control the flow of the tidal main channel into the Duantou River in one direction, and the other It is the water outlet water stop gate, which is opened when the tide is low, and is used to control the one-way flow of the Duantou River into the tidal main channel. The present invention utilizes a water-blocking wall and two non-return doors to convert the fluctuating reciprocating flow of the Duantou River into a one-way circulating flow by means of tidal hydropower, and the renewal water volume is proportional to the tidal range and the water area of the Duantou River. The water flow effect is good, the renewal water volume is large, the water level of the Duantou River is controllable, it is simple and easy to implement, the project investment is low, the construction period is short, the operation and maintenance cost is low, and it has the prospect of popularization and application.

Description

A method and device for realizing one-way flow of Duantou River by using tides

technical field

The invention relates to a device for improving the water environment of a river course, in particular to a device for realizing the one-way flow of Duantou River by using tides, and belongs to the field of water conservancy.

Background technique

The task of urban and rural river water environment governance is very heavy, and connecting Duantou River to achieve smooth flow of water is one of the extremely important governance measures. At present, the methods for connecting the Duantou River to running water mainly include the following: one is to connect the Duantou River with other Duantou Rivers (or other main rivers); the other is to connect the Duantou River with the Lay pipelines and build pumping stations between other Duotou Rivers (or other main rivers) to achieve connectivity (see literature: Cheng Ying, Zhou Yulin, Application and Analysis of Pipe Jacking Technology in Duantoubang Opening Project, [J] Water Conservancy Science and Technology and Economics, 2013, Issue 04); the third is to inject water into the pumping station. The water intake of the diversion pumping station is placed upstream of the intersection of the Duantou River and the main river, and the water outlet is placed at the end of the Duantou River. The state of stagnant water; the fourth is the topological diversion wall. The Chinese utility model patent (CN205804274U) changes the topological relationship between the main river and the Duantou River on one side, so that the water flows on the topological structure of a through-line to guide the water flow. effect.

Among the above methods: some methods require a large amount of demolition and land acquisition, which are difficult to implement and require a large investment in construction; some methods have disadvantages such as high operation and maintenance costs and poor connectivity effects; topological diversion walls are not suitable for the main channel and Duantou River Otherwise, the diversion, drainage and navigation functions of the main river will be reduced. In the southeast coastal areas of my country, the tidal effect is obvious, generally fluctuating twice a day, and the use of tides to regulate the flow of Duantou River has not been reported.

Contents of the invention

The present invention provides a method and device for realizing the one-way flow of the Duantou River by utilizing tides, aiming at problems such as high implementation difficulty, large construction investment, high operation and maintenance cost, and poor connection effect existing in the existing Duantou River connection management.

The technical solution for realizing the purpose of the present invention is to provide a method for utilizing tides to realize the one-way flow of Duantou River, including the following steps:

(1) At the center of the Duantou River with a river width of B, set up a water barrier, the start of the water barrier is B/2 away from the end of the Duantou River, and the end is at the Duantou River and the tidal main channel At the junction; between the two sides of the terminal end of the water partition wall and the bank of the Duantou river, there is a check door, one of which is the water inlet water stop door, and the other is the water outlet water stop door;

(2) According to the water level or tide information of Duantou River, adopt one of the following methods to automatically control the opening or closing of the check door;

(a) The method of automatically controlling the check gate according to the water level of the Duantou River is as follows: set the highest water level and the lowest water level of the Duantou River, and use a water level sensor device. When the water level is set at the highest level, the water inlet water stop door is automatically opened to control the tide-sensitive main river flow into the Duantou River in one direction. When the water level of the Duantou River is higher than the highest set water level, the water inlet water stop door is automatically closed; When the water level of the main tidal river is lower than the water level of the Duantou River and higher than the minimum set water level, the water outlet water stop door will be automatically opened to control the water flow of the Duantou River to flow into the tidal main channel in one direction. When the water level of the Duantou River is lower than the minimum set water level , automatically close the water outlet water stop door;

(b) The method of automatically controlling the non-return door based on tidal information is as follows: when the tide rises, the inlet water stop door is automatically opened to control the tide-sensitive main river flow into the Duantou River in one direction; when the tide falls, the outlet water stop door is automatically opened to control the water stop The head river flows into the tidal main channel in one direction.

The technical solution of the present invention also relates to a device for realizing the one-way flow of the Duantou River by using tides. A water-repellent wall is set at the center of the Duantou River with a river width of B. At the end B/2, the end is at the junction of the Duantou River and the tidal main channel; a check gate is installed between the two sides of the end of the water barrier and the bank of the Duantou River, and one of them is a water inlet stop gate. Open, used to control the flow of the tidal main river into the Duantou River in one direction, and the other is the outlet water stop gate, which is opened at low tide to control the flow of the Duantou River into the tidal main river in one direction.

The water partition wall of the present invention can be one of reinforced concrete vertical wall, pile type continuous wall and soft partition wall.

The device for realizing one-way flow of the Duantou River by using tides provided by the present invention may also include an automatic control device, which uses water level sensing or tidal information sensing to control the automatic opening of the water inlet waterstop and the water outlet waterstop.

The non-return door of the present invention is a mechanical device or an engineering structure, such as a flap door or a sluice gate, which can pass water in the forward direction and reverse the reverse direction.

Compared with prior art, the beneficial effect of the present invention is:

1. The present invention utilizes a water barrier and two non-return gates to convert the fluctuating reciprocating flow of the Duantou River into a one-way circulating flow by means of tidal hydropower. The fluctuating and reciprocating flow of the Duantou River gradually decreases to zero from the mouth of the river to the end of the river. The water area of the Duantou River is basically a stagnant water area, and the water body is rarely renewed; while the unidirectional circulation flow achieves orderly flow, with a large flow rate and a large water body. Comprehensive and continuous updates.

2. The device provided by the present invention for realizing the one-way flow of the Duantou River by utilizing tides completely relies on natural forces to do work, has good water flow effect, large amount of renewed water, controllable water level of the Duantou River, is simple and easy to implement, saves engineering investment, and has a short construction period , low operation and maintenance costs, and has a prospect of popularization and application in river water environment management.

Description of drawings

Fig. 1 is a structural schematic diagram of the channel and engineering layout after installing the device for realizing the one-way flow of the Duantou River by utilizing the tide provided by the embodiment of the present invention;

Fig. 2 is a schematic diagram of the inflow of the Duantou River when the tide is high after installing the device for realizing the one-way flow of the Duantou River by utilizing the tide provided by the embodiment of the present invention;

Fig. 3 is a schematic diagram of the outflow of the Duantou River when the tide is ebbing after installing the device for realizing the one-way flow of the Duantou River by utilizing the tide provided by the embodiment of the present invention;

Figure 4 is a schematic diagram of the flow velocity distribution of the fluctuating reciprocating flow of the original Duantou River;

Fig. 5 is a schematic diagram of the flow velocity distribution of the one-way circulating flow of the Duantou River after installing the device for realizing the one-way flow of the Duantou River by utilizing the tide provided by the embodiment of the present invention;

In the figure, 1. Main tidal channel; 2. Duantou River; 3. Inlet water stop gate; 4. Outlet water stop gate; .

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Example 1

The technical scheme of the invention is applicable to the running water of the Duantou River in the tidal region.

Referring to accompanying drawing 1, it is the structure schematic diagram of the channel and engineering layout after the reconstruction of the device for realizing the one-way flow of the Duantou River provided by the tide provided by this embodiment; 2 at the central position, set up a water barrier 5, the start of the water barrier is B/2 away from the end of the Duantou River, and the end is at the junction of the Duantou River and the tidal main channel 1; the end of the water barrier 5 is There is a check gate between the two sides and the bank of the Duantou River, one of which is the water inlet water stop gate 3, which is opened when the tide is high, and is used to control the flow of the tidal main river 1 into the Duantou River 2 in one direction, and the other is the outlet water The water stop gate 4 is opened when the tide falls, and is used to control the water flow of the Duantou River 2 to flow into the tide-sensitive main river channel 1 in one direction.

In the technical solution of this embodiment, the water-retaining wall can be one of a reinforced concrete vertical wall, a pile-type continuous wall, and a soft wall. The check gate can be a mechanical device or engineering structure that can pass water in the forward direction and reverse the reverse direction, such as a flap gate, etc.; it can also be a traditional sluice gate, which uses water level sensing or tidal sensing information to realize automatic control. When the automatic control check gate is used, the highest water level and the lowest water level of the Duantou River can be set according to the needs; when the water level of the tidal main river is higher than the water level of the Duantou River and lower than the maximum water setting level, the flow will enter from the water inlet gate , when the water level is higher than the maximum set water level, the water inlet gate will be automatically closed; when the water level of the tidal main river is lower than the Duantou River water level and higher than the minimum set water level, it will flow out of the water outlet gate, and the water outlet gate will be automatically closed when it is lower than the minimum set water level .

In the technical solution provided by the present invention, the check door is located at the end of the water barrier, one is the water inlet check door that the water flow can enter but cannot exit, and the other is the water outlet check door that the water flow can exit but cannot enter. The wall and two check doors can transform the ups and downs of the Duantou River into a one-way circulation flow with the help of tidal hydropower. When the tide is high, it flows in from the inlet gate, and when the tide falls, it flows out from the outlet gate. The updated water volume is proportional to the tidal range and the water area of the Duantou River.

Referring to Figure 2, it is a schematic diagram of the inflow of the Duantou River when the tide is high after installing the device for realizing the one-way flow of the Duantou River by utilizing the tide provided by the embodiment of the present invention. When the tide rises, the water level of the main channel rises, and the water level of the main channel is higher than that of the Duantou River. The water inlet check door 3 is opened, the water outlet check door 4 is closed, and the main channel water flows into the Duantou River.

Refer to Figure 3, which is a schematic diagram of the outflow of the Duantou River at ebb tide after installing the device for realizing the one-way flow of the Duantou River by utilizing the tide provided by the embodiment of the present invention. When the tide ebbs, the water level of the main river decreases, and the water level of the main river is lower than that of the Duantou River. The water inlet check door 3 is closed, the water outlet check door 4 is opened, and the Duantou river flows into the main river.

The above-mentioned high tide and low tide complete a cycle, realizing the one-way flow of the water body of the Duantou River, which is fully and continuously updated.

See accompanying drawing 4, which is a schematic diagram of the flow velocity distribution of the fluctuating reciprocating flow of the original Duantou River. The ordinate is the flow velocity of the water, and the abscissa is the distance along the length of the Duantou River corresponding to the position of the water flow (assuming that the length of the Duantou River is L). The rising tide is 6, the falling tide is 7, and the average daily flow is 8. It can be seen from Figure 4 that the rising tide of the Duantou River is 6 and the falling tide is 7. The fluctuating flow is from the mouth of the river (x=0) to the end of the river (x= L) gradually decreases to zero, and its average daily flow 8 is zero, basically belonging to stagnant waters, with little water body renewal.

Refer to Figure 5, which is a schematic diagram of the flow velocity distribution of the one-way circulating flow of the Duantou River after being transformed by the technical solution provided in this embodiment. The ordinate is the flow velocity of the water, and the abscissa is the distance from the check gate along the length direction of the Duantou River corresponding to the position of the water flow (assuming that the length of the Duantou River is L). It can be seen from Figure 5 that when the tide is high, the flow velocity of the rising tide 6 gradually decreases to zero from the 3 places of the water inlet check door (x=0) to the 4 places of the water outlet check door (x=2L); The water flow rate of 7 gradually decreases to zero from the water outlet check door 4 (x=2L) to the water inlet check door 3 (x=0). The daily average flow is 8 one-way circulation flow, which realizes orderly flow, high flow velocity, and comprehensive and continuous renewal of water body.

Claims (7)

1. A method utilizing tides to realize the one-way flow of Duantou River, is characterized in that comprising the steps: (1) At the center of the Duantou River with a river width of B, set up a water barrier. The start of the water barrier is B/2 away from the end of the Duantou River, and the end is at the junction of the Duantou River and the tidal main channel. There is a check gate between the two sides of the terminal end of the water partition wall and the river bank of Duantou, one of which is the water inlet water stop, and the other is the water outlet water stop; (2) According to the water level or tide information of Duantou River, adopt one of the following methods to automatically control the opening or closing of the check door; (a) The method of automatically controlling the check gate according to the water level of the Duantou River is as follows: set the highest water level and the lowest water level of the Duantou River, and use a water level sensor device. When the water level is set at the highest level, the water inlet water stop door is automatically opened to control the tide-sensitive main river flow into the Duantou River in one direction. When the water level of the Duantou River is higher than the highest set water level, the water inlet water stop door is automatically closed; When the water level of the main tidal river is lower than the water level of the Duantou River and higher than the minimum set water level, the water outlet water stop door will be automatically opened to control the water flow of the Duantou River to flow into the tidal main channel in one direction. When the water level of the Duantou River is lower than the minimum set water level , automatically close the water outlet water stop door; (b) The method of automatically controlling the non-return door based on tidal information is as follows: when the tide rises, the inlet water stop door is automatically opened to control the tide-sensitive main river flow into the Duantou River in one direction; when the tide falls, the outlet water stop door is automatically opened to control the water stop The head river flows into the tidal main channel in one direction. 2. A device for realizing one-way flow of the Duantou River by using tides, characterized in that: at the center of the Duantou River (2) with a river width of B, a water barrier (5) is set, and the wall of the water barrier is The starting point is B/2 away from the end of the Duantou River, and the ending point is at the junction of the Duantou River and the tidal main channel (1); a check gate is set between the two sides of the termination of the water barrier (5) and the bank of the Duantou River , one of which is the water inlet stop gate (3), which is opened when the tide is high, and is used to control the tide-sensitive main river (1) to flow into the Duantou River (2) in one direction, and the other is the water outlet stop gate (4), which is opened at ebb tide When it is turned on, it is used to control the water flow of the Duantou River (2) to flow into the tidal main channel (1) in one direction. 3. A device for utilizing tides to realize one-way flow of the Duantou River according to claim 2, characterized in that: the water partition wall is one of a reinforced concrete vertical wall, a piled continuous wall, and a soft partition wall kind. 4. A device for realizing one-way flow of the Duantou River by using tides according to claim 2, characterized in that it includes an automatic control device that uses water level sensing or tide forecast information to control the water inlet water stop (3) And the automatic opening of the water outlet water stop door (4). 5. A device for realizing the one-way flow of the Duantou River by using tides according to claim 2, characterized in that: said check gate is a mechanical device or an engineering structure that prevents forward flow and reverse flow. 6. A device for realizing the one-way flow of Duantou River by using tides according to claim 5, characterized in that: the mechanical device for forward water flow and reverse check is a flap valve. 7. A device for realizing one-way flow of Duantou River by using tides according to claim 5, characterized in that: said engineering structure for forward water flow and reverse check is a sluice.