CN103981832B - Urban small river ecological moisturizing dispatching method and system - Google Patents
Urban small river ecological moisturizing dispatching method and system Download PDFInfo
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Abstract
The present invention relates to a kind of urban small river ecological moisturizing dispatching method and system, its system comprises small pump on moisturizing source, the moisturizing pipeline connecting river and moisturizing source, moisturizing pipeline and water pump control cabinet corresponding to small pump, flow meter is provided with in the river of the downstream direction of relative complement waterpipe delivery outlet, described flow meter and water pump control cabinet are communicatively connected to control machine in, middle control machine regulates and controls the conveying capacity of small pump by water pump control cabinet, to regulate and control the refill flow of moisturizing input point to river; Its method utilizes its system call discharge of river Q to be placed in interval [0.8Qm, Qm], under ensureing that river is in ecological condition all the time.Native system and method overcome rate of water make-up in prior art and arbitrarily determine, cause great water resource and energy waste, and operating cost is too high and the problem that cannot implement; And some dispatching methods are loaded down with trivial details, technical difficulty is high, cannot be applicable to the problem in urban small river.
Description
Technical field
The present invention relates to environmental protection and technical field of resource comprehensive utilization, specifically a kind of ecological water supplement dispatching method for urban small river and system.
Background technology
China increases fast in economy, Urbanization Construction obtain attract people's attention achievement while, because people exceedingly develop environmental resource, make the ecological environment problem of urban river more and more outstanding, Cut off, water pollution, the atrophy of storehouse, lake etc. are day by day serious.Especially for many ephemeral streams, dry season, cutout became normality.Ecological water supplement is carried out to river, is considered to a kind of and solves the effective technical measures of urban small river water environmental problem.But, existing urban small river ecological water charging system, the determination of ubiquity rate of water make-up and the operation of moisturizing dispatching patcher have the problem of very large randomness, as simply the water requirement simple superposition summations such as ecological environment outside aquatile habitat, view, dilution self-cleansing, sediment transport and river course obtained river channel ecology environmental Water Requirement, make the river channel ecology environmental Water Requirement that calculates larger than actual aequum, cause great water resource and energy waste, operating cost is too high, and moisturizing dispatching patcher is difficult to maintain and perform practically no function.
A kind of river ecological flow dispatching method based on reservoir operation disclosed in CN101892647B, in the method, first, set up the basic scheme of ecological flow management, compromise proposal and ideal scheme, to be applicable to height respectively, to neutralize low water supply fraction demand, and maintain basic, good and desirable urban river ecosystem health state, subregion is carried out in reservoir capacity space simultaneously, be corresponding in turn to above-mentioned ecological flow Managed Solution from bottom to top; Then, adopt reservoir operation curve to instruct and supply water to the mankind, and be bonded complete reservoir ecological dispatching scheme with ecological flow Managed Solution; And then utilization genetic algorithm, be basic constraint with the water supply fraction of satisfied planning, to reduce the disturbance of River Hydrology situation for optimization aim, the parameters such as reservoir capacity subregion, dispatch curve are optimized, obtain the river ecological flow Managed Solution based on reservoir operation.The method relate to reservoir become a mandarin flow rate zone segmentation, need to set up kinds of schemes for the different traffic conditions that becomes a mandarin, the history parameters that dispatch curve relates to is numerous, whole regulate and control method is loaded down with trivial details, for high cost urban small river, and scheduling depends on reservoir, also inapplicable for the river without reservoir source, applicability is lower.
Summary of the invention
The object of the present invention is to provide a kind of urban small river ecological moisturizing dispatching method and system, it can the refill flow of Automatic dispatching river ecological water charging system, solves existing dispatching method waste resource and loaded down with trivial details problem.
A kind of urban small river ecological moisturizing dispatching method, specifically:
Arrange moisturizing input point at upper river, moisturizing source carries out moisturizing by moisturizing input point to river by moisturizing pipeline; Moisturizing pipeline is arranged small pump as water delivery power set, and corresponding small pump arranges water pump control cabinet; Flow meter is provided with in the river of the downstream direction of relative moisturizing input point; Described flow meter and water pump control cabinet are communicatively connected to control machine in, and middle control machine regulates and controls the conveying capacity of small pump by water pump control cabinet, to regulate and control the refill flow of moisturizing input point to river, make discharge of river Q be placed in interval [0.8Qm, Qm],
Wherein, Qm-target flow, Qm=W/t, in formula: W-river channel ecology environmental Water Requirement, t-calculation interval;
Wherein, outside W=Wzf+Wsl+Wss+max ﹛ Wjl, Wjg, Wzj ﹜+W, in formula:
Wzf-river evaporation water requirement; Wsl-river seepage water requirement; Wss-river course sediment transport water requirement; Wjl-ecological basic discharge in river channel; Wjg-River Landscape environmental Water Requirement; Wzj-river dilution self-cleansing water requirement; W is outer-river course outside water demand of ecological environment;
River evaporation water requirement Wzf is calculated by unit area evaporation capacity × water surface area;
River seepage water requirement Wsl is obtained by leak factor × average water yield cheek of river history;
Sediment transport water requirement Wss in river course is obtained by the mean value calculation of the moon over the years sand content;
Ecological basic discharge in river channel Wjl is calculated by Tennant method;
River Landscape environmental Water Requirement Wjg is obtained by Pavlov's Si base formulae discovery;
River dilution self-cleansing water requirement Wzj is obtained by the mathematic interpolation of present situation pollutant total load and target contaminant total load;
Outside river course, water demand of ecological environment W is outer is calculated by building area quota method.
Further, according to upper river with or without reservoir, two kinds of ecological water supplement Automatic dispatching technical schemes are proposed.
Scheme one:
Upper river has reservoir, described moisturizing input point comprises reservoir moisturizing point and river moisturizing point, moisturizing pipeline passes through reservoir moisturizing point to reservoir moisturizing, reservoir passes through river moisturizing point to river moisturizing, river moisturizing point is arranged on the minimum eco-grounderwater level place of reservoir, and electric control valve is set at river moisturizing point, liquid-level switch is arranged to reservoir, described flow meter and liquid-level switch are connected to a controller by signal cable, described controller connects electric control valve by control cables, described middle control machine is by GPRS network or 3G network and controller, water pump control cabinet communicates to connect, the reservoir level H that middle control machine is surveyed according to river discharge Q and liquid-level switch is to water pump control cabinet, controller sends instruction, to regulate and control the refill flow of reservoir moisturizing point and river moisturizing point, specifically comprise and regulate and control step as follows:
A () judges reservoir level H: work as H=Hmax, and small pump stops, and proceeds to step (b); As Hmin < H < Hmax, proceed to step (b); As H≤Hmin, electric control valve cuts out, and small pump starts, and repeats step (a);
B () judges discharge of river Q: as Q < 0.8Qm, electric control valve is opened, and proceeds to step (a); All the other directly proceed to step (c);
C (), as Q >=Qm, electric control valve cuts out, small pump stops, and proceeds to step (a); All the other directly proceed to step (a);
In above-mentioned steps, Hmax-reservoir top water level; The minimum eco-grounderwater level of Hmin-reservoir, adopts storehouse, lake morphological analysis to calculate.
Scheme two:
Described water pump control cabinet connects a controller by control cables, described middle control machine passes through GPRS network or 3G network and controller and communicates to connect, described flow meter connects a remote I/O module by signal cable, described remote I/O module is passed through GPRS network or 3G network and controller and is communicated to connect, the river discharge Q of middle control machine measured by flow meter sends instruction to regulate and control the conveying capacity of small pump to water pump control cabinet, and concrete regulation and control step is as follows:
A () judges discharge of river Q: as Q < 0.8Qm, and small pump starts, and river starts moisturizing, proceeds to step (b); All the other repeat step (a);
B (), as Q < Qm, small pump runs, river moisturizing continues, and repeats step (b); As Q >=Qm, small pump stops, and river moisturizing stops, and proceeds to step (a).
The regulation and control key parameter of this method is discharge of river Q, by the flow meter in dispatching patcher, real-time detected value is fed back in middle control machine, the regulation and control of middle control machine with reference to for can the target flow Qm that goes out of fixed value calculation, the object regulating small pump water delivery flow is reached by the control of middle control machine to water pump control cabinet, and then discharge of river Q is controlled the interval [0.8Qm that determining, Qm] in, under ensureing that river is in ecological condition all the time.This method is is rationally accepted or rejected in the calculating of river channel ecology environmental Water Requirement W, overcomes rate of water make-up in prior art and arbitrarily determines,
Cause great water resource and energy waste, operating cost is too high and the problem that cannot implement; And some dispatching methods are loaded down with trivial details, controlled condition is complicated, and technical difficulty is high, cannot be applicable to the problem in urban small river.
And the situation of reservoir is had further for upper river, moisturizing point in river is arranged on the minimum eco-grounderwater level place of reservoir, reservoir level is not less than its minimum eco-grounderwater level, to ensure the ecological environment of reservoir, and be conducive to reservoir lower floor water exchange water, while regulation and control river discharge Q, ensure that the ecological environment of reservoir.For the situation of upper river without reservoir, whole adjusted and controlled effectively simple, single regulation and control are realized to river discharge Q.
In addition, present invention also offers a kind of urban small river ecological moisturizing dispatching patcher, it comprises small pump on moisturizing source, the moisturizing pipeline connecting river and moisturizing source, moisturizing pipeline and water pump control cabinet corresponding to small pump, in the river of the downstream direction of relative complement waterpipe delivery outlet, be provided with flow meter, described flow meter and water pump control cabinet are communicatively connected to control machine in.
Further, described river comprises the reservoir of its upstream, and the corresponding reservoir of output of described moisturizing pipeline is arranged, and be provided with liquid-level switch in reservoir, liquid-level switch is connected with a controller; The minimum eco-grounderwater level place of reservoir is provided with the flash mouth to river moisturizing, flash mouth is provided with electric control valve, flow meter is arranged in the river of the downstream direction of relative flash mouth, described electric control valve is connected with controller with flow meter, and described controller and middle control machine communicate to connect.
The flow meter of this dispatching patcher is as the signal acquisition device of system, for in control core, control machine provides regulation and control foundation, middle control machine so that by control water pump control cabinet carry out moisturizing, this system architecture advantages of simple, required hardware unit is ripe easily to be implemented, can timely and effective moisturizing scheduling.And the structure of reservoir is had for upper river, increase liquid-level switch and obtain reservoir level situation, middle control machine, at associating river discharge and reservoir level, realizes the United Dispatching to reservoir and river, under being in ecological condition both ensureing to greatest extent.And the flash mouth be provided with at the minimum eco-grounderwater level place of reservoir to river moisturizing, as river moisturizing point, is conducive to reservoir lower floor water exchange water, ensure the ecological environment of reservoir.
Accompanying drawing explanation
Fig. 1 is the on-the-spot structure chart of one of dispatching method of the present invention;
Fig. 2 is control framework figure corresponding to structure chart on-the-spot shown in Fig. 1;
Fig. 3 is regulation and control flow chart corresponding to structure chart on-the-spot shown in Fig. 1;
Fig. 4 is the on-the-spot structure chart of another kind of dispatching method of the present invention;
Fig. 5 is control framework figure corresponding to structure chart on-the-spot shown in Fig. 4;
Fig. 6 is regulation and control flow chart corresponding to structure chart on-the-spot shown in Fig. 4;
Fig. 7 calculates the graph of relation of lake reservoir level that the minimum eco-grounderwater level Hmin of reservoir adopts and water surface area rate of change for the present invention.
Description of reference numerals: control machine in 1-; 2-controller; 3-liquid-level switch; 4-electric control valve; 5-flow meter; 6-water pump control cabinet; 7-small pump; 8-moisturizing pipeline; 9-remote I/O module.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment one:
When upper river has reservoir, as Fig. 1 is arranged, flash mouth is placed in reservoir minimum eco-grounderwater level Hmin place, this flash mouth is as river moisturizing point, and at flash mouth place, electric control valve 4 is installed, to let out the rate of water make-up in river under balancing reservoir.Moisturizing source by moisturizing pipeline 8 to moisturizing in reservoir, moisturizing pipeline 8 reservoir moisturizing point is to the output of reservoir, moisturizing pipeline 8 is arranged small pump 7 as water delivery power set, and the operation that water pump control cabinet 6 controls small pump 7 is set.In the river in relative moisturizing input point direction downstream, flow meter 5 is set to record river discharge Q, liquid-level switch 3 is arranged to detect reservoir level H in real time to reservoir, detection signal is delivered to a controller 2 by signal cable by flow meter 5 and liquid-level switch 3, and controller 2 controls the aperture of electric control valve 4 by control cables.
Control room is arranged to said apparatus, in settling, controls machine 1.Middle control machine 1 pair of controller 2 and water pump control cabinet 6 realize telecommunication by GPRS network or 3G network, as shown in Figure 2, Real-time Obtaining reservoir level H and river discharge Q, reservoir top water level Hmax, the minimum eco-grounderwater level Hmin of reservoir and target flow Qm parameter are set in advance in middle control machine 1, middle control machine 1 enters control program by the flow chart shown in accompanying drawing 3, is namely regulate and control as follows:
A () judges reservoir level H: work as H=Hmax, and small pump 7 stops, and proceeds to step (b); As Hmin < H < Hmax, proceed to step (b); As H≤Hmin, electric control valve 4 cuts out, and small pump 7 starts, and repeats step (a);
B () judges discharge of river Q: as Q < 0.8Qm, electric control valve 4 is opened, and proceeds to step (a); All the other directly proceed to step (c);
C (), as Q >=Qm, electric control valve 4 cuts out, small pump 7 stops, and proceeds to step (a); All the other directly proceed to step (a).
Because this example comprises reservoir moisturizing point and river moisturizing point two moisturizing points, need to jointly control refill flow in conjunction with river discharge Q and reservoir level H, when ensureing reservoir level H, when river discharge Q is lower than 0.8Qm, trigger river moisturizing, until river discharge Q reaches Qm.Can not only ensure that reservoir level H is not less than its minimum eco-grounderwater level Hmin like this, to guarantee the ecological environment of reservoir, and be conducive to reservoir lower floor water exchange water.
Embodiment two:
When upper river is without reservoir, it arranges relatively simple, and as shown in Figure 4, moisturizing input point is located at upper river, and the output in moisturizing pipeline 8 pairs of rivers is moisturizing input point.With embodiment one, moisturizing pipeline 8 is arranged small pump 7 as water delivery power set, and the operation that water pump control cabinet 6 controls small pump 7 is set.Unlike, one controller 2 is set as information terminal, water pump control cabinet 6 is by control cables connection control device 2, flow meter 5 connects a remote I/O module 9 by signal cable and flow information is first transferred to controller 2, middle control machine 1 is connected with same GPRS network or the 3G network of adopting between controller 2 and between controller 2 with remote I/O module 9, as shown in Figure 5.Prior Offered target flow Qm parameter in middle control machine 1 equally, middle control machine 1 enters control program by the flow chart shown in Fig. 6, that is:
A () judges discharge of river Q: as Q < 0.8Qm, small pump 7 starts, and river starts moisturizing, proceeds to step (b); All the other repeat step (a);
B (), as Q < Qm, small pump 7 runs, river moisturizing continues, and repeats step (b); As Q >=Qm, small pump 7 stops, and river moisturizing stops, and proceeds to step (a).
When river discharge Q is lower than 0.8Qm, trigger river moisturizing program, until river discharge Q reaches Qm, a moisturizing cycle completes.For dispatching conveniently, in water pump control cabinet 6, establishing frequency converter, regulating small pump 7 rotating speed to reach the object regulating refill flow.
Due to the present invention is directed river needs the situation of moisturizing, for river abundant water phase or even flood period not in the modification scope of this programme.Moisturizing source in the present invention can be taken from the rivers of contiguous water resource relative abundance or be met municipal sewage plant's tail water of moisturizing condition of water quality.
The object of the invention is to make discharge of river Q be placed in interval [0.8Qm, Qm], to ensure the minimum flow requirement that river ecological environment needs.Wherein, Qm is target flow, is calculated, in formula by formula " Qm=W/t ": W is river channel ecology environmental Water Requirement, and t is calculation interval;
Further, W value is calculated, in formula by formula " W=Wzf+Wsl+Wss+max ﹛ Wjl, Wjg, Wzj ﹜+W is outer ":
Wzf-river evaporation water requirement; Wsl-river seepage water requirement; Wss-river course sediment transport water requirement; Wjl-ecological basic discharge in river channel; Wjg-River Landscape environmental Water Requirement; Wzj-river dilution self-cleansing water requirement; W is outer-river course outside water demand of ecological environment.
The major function in river meets the requirement such as ecological environment water demand outside aquatile habitat, view, dilution self-cleansing, sediment transport and river course, and discharge of river Q should be able to meet the needs of above-mentioned functions simultaneously.For river channel ecology environmental Water Requirement W, owing to often there is intersection, overlap between above-mentioned each subitem, thus each subitem is carried out superposition summation and result of calculation can be made bigger than normal, unreasonable.Therefore, for the obvious Wjl value of overlap, Wjg value, Wzj value, adopt the method for getting maximum value to solve the problem computed repeatedly.
Above-mentioned each value obtains according to prior art, specific as follows:
River evaporation water requirement Wzf is calculated by unit area evaporation capacity × water surface area, and basin evaporation capacity is determined by test; River seepage water requirement Wsl is obtained by leak factor × average water yield cheek of river history, and leak factor is determined according to river underlying surface situation; Sediment transport water requirement Wss in river course is obtained by the mean value calculation of the moon over the years sand content, the river moon sand content data can be obtained by local Hydrological Bureau; Ecological basic discharge in river channel Wjl is calculated by Tennant method, and it is according to river actual conditions determination base flow percentage; River Landscape environmental Water Requirement Wjg is obtained by Pavlov's Si base formulae discovery, when river discharges function is not remarkable, can ignore this value; River dilution self-cleansing water requirement Wzj is obtained by the mathematic interpolation of present situation pollutant total load and target contaminant total load, when there are good point, pollution of area source control measure in river along journey, can ignore this value; Outside river course, water demand of ecological environment W is outer is calculated by building area quota method, is mainly vegetation water requirements outside river course.
For the reservoir top water level Hmax also related in the embodiment one and minimum eco-grounderwater level Hmin of reservoir.Reservoir top water level Hmax is determined by the design library capacity of reservoir, and its numerical value can obtain from local water reservoir management department.The minimum eco-grounderwater level Hmin of reservoir maintains the lowest water level that serious degradation does not occur reservoir ecosystem, is the adjustable storage capacity of reservoir between minimum eco-grounderwater level to top water level.The minimum eco-grounderwater level Hmin of reservoir can utilize storehouse, lake morphological analysis to calculate.Circular utilizes storehouse, lake measured water level and corresponding water surface area data, set up the relation curve of lake reservoir level and water surface area rate of change, as shown in Figure 7, corresponding water level value B when the maximum value of Lake area rate of change is A, water level value B is now the minimum eco-grounderwater level of reservoir.
In addition, present invention also offers a kind of urban small river ecological moisturizing dispatching patcher, above-mentioned two embodiments of the method are all based on this system, it comprises small pump 7 on moisturizing source, the moisturizing pipeline 8 connecting river and moisturizing source, moisturizing pipeline 8 and water pump control cabinet 6 corresponding to small pump 7, in the river of the downstream direction of relative complement waterpipe 8 delivery outlet, be provided with flow meter 5, described flow meter 5 is communicatively connected to control machine 1 in water pump control cabinet 6.The flow meter 5 of this dispatching patcher as the signal acquisition device of system, in control core, control machine 1 provides regulation and control foundation, middle control machine 1 and then control moisturizing by controlling water pump control cabinet 6.
For embodiment of the method one, because described river comprises the reservoir of its upstream, the system of its correspondence is further: the corresponding reservoir of output of described moisturizing pipeline 8 is arranged, and arrange liquid-level switch 3 in reservoir to obtain reservoir level situation, liquid-level switch 3 is connected with a controller 2, the minimum eco-grounderwater level place of reservoir is provided with the flash mouth to river moisturizing, flash mouth is provided with electric control valve 4, flow meter 5 is arranged in the river of the downstream direction of relative flash mouth, described electric control valve 4 is connected with controller 2 with flow meter 5, described controller 2 communicates to connect with middle control machine 1, middle control machine 1 combines river discharge and reservoir level, realize the United Dispatching to reservoir and river, and the flash mouth be provided with at the minimum eco-grounderwater level place of reservoir to river moisturizing is as river moisturizing point, be conducive to reservoir lower floor water exchange water, under being in ecological condition both ensureing to greatest extent.
Claims (3)
1. a urban small river ecological moisturizing dispatching method, is characterized in that:
Upper river has reservoir, the moisturizing input point comprising reservoir moisturizing point and river moisturizing point is set at upper river, moisturizing pipeline passes through reservoir moisturizing point to reservoir moisturizing, reservoir passes through river moisturizing point to river moisturizing, river moisturizing point is arranged on the minimum eco-grounderwater level place of reservoir, and electric control valve is set at river moisturizing point, flow meter is provided with in the river of the downstream direction of relative moisturizing input point, liquid-level switch is arranged to reservoir, described flow meter and liquid-level switch are connected to a controller by signal cable, described controller connects electric control valve by control cables, moisturizing pipeline is arranged small pump as water delivery power set, and corresponding small pump arranges water pump control cabinet,
Described flow meter and water pump control cabinet are communicatively connected to control machine in by GPRS network or 3G network, middle control machine regulates and controls the conveying capacity of small pump by water pump control cabinet, the reservoir level H that middle control machine is surveyed according to river discharge Q and liquid-level switch sends instruction to water pump control cabinet, controller, to regulate and control the refill flow of reservoir moisturizing point and river moisturizing point, discharge of river Q is made to be placed in interval [0.8Qm, Qm] in, specifically comprise and regulate and control step as follows:
A () judges reservoir level H: work as H=Hmax, and small pump stops, and proceeds to step (b); As Hmin < H < Hmax, proceed to step (b); As H≤Hmin, electric control valve cuts out, and small pump starts, and repeats step (a);
B () judges discharge of river Q: as Q < 0.8Qm, electric control valve is opened, and proceeds to step (a); All the other directly proceed to step (c);
C (), as Q >=Qm, electric control valve cuts out, small pump stops, and proceeds to step (a); All the other directly proceed to step (a);
In above-mentioned steps, Qm-target flow, Qm=W/t, in formula: W-river channel ecology environmental Water Requirement, t-calculation interval; Hmax-reservoir top water level; The minimum eco-grounderwater level of Hmin-reservoir, adopts storehouse, lake morphological analysis to calculate;
Wherein, W=Wzf+Wsl+Wss+max ﹛ Wjl, Wjg, Wzj ﹜+W
outward, in formula:
Wzf-river evaporation water requirement; Wsl-river seepage water requirement; Wss-river course sediment transport water requirement; Wjl-ecological basic discharge in river channel; Wjg-River Landscape environmental Water Requirement; Wzj-river dilution self-cleansing water requirement; W
outwardwater demand of ecological environment outside-river course;
River evaporation water requirement Wzf is calculated by unit area evaporation capacity × water surface area;
River seepage water requirement Wsl is obtained by leak factor × average water yield cheek of river history;
Sediment transport water requirement Wss in river course is obtained by the mean value calculation of the moon over the years sand content;
Ecological basic discharge in river channel Wjl is calculated by Tennant method;
River Landscape environmental Water Requirement Wjg is obtained by Pavlov's Si base formulae discovery;
River dilution self-cleansing water requirement Wzj is obtained by the mathematic interpolation of present situation pollutant total load and target contaminant total load;
Water demand of ecological environment W outside river course
outwardcalculated by building area quota method.
2. a urban small river ecological moisturizing dispatching method, is characterized in that:
Arrange moisturizing input point at upper river, moisturizing source carries out moisturizing by moisturizing input point to river by moisturizing pipeline, moisturizing pipeline is arranged small pump as water delivery power set, and corresponding small pump arranges water pump control cabinet, in the river of the downstream direction of relative moisturizing input point, be provided with flow meter, flow meter connects a remote I/O module by signal cable, described flow meter and water pump control cabinet are communicatively connected to control machine in, described water pump control cabinet connects a controller by control cables, described remote I/O module is passed through GPRS network or 3G network and controller and is communicated to connect, described middle control machine passes through GPRS network or 3G network and controller and communicates to connect, middle control machine regulates and controls the conveying capacity of small pump by water pump control cabinet, to regulate and control the refill flow of moisturizing input point to river, discharge of river Q is made to be placed in interval [0.8Qm, Qm] in, the river discharge Q of middle control machine measured by flow meter sends instruction to regulate and control the conveying capacity of small pump to water pump control cabinet, concrete regulation and control step is as follows:
A () judges discharge of river Q: as Q < 0.8Qm, and small pump starts, and river starts moisturizing, proceeds to step (b); All the other repeat step (a);
B (), as Q < Qm, small pump runs, river moisturizing continues, and repeats step (b); As Q >=Qm, small pump stops, and river moisturizing stops, and proceeds to step (a);
In above-mentioned steps, Qm-target flow, Qm=W/t, in formula: W-river channel ecology environmental Water Requirement, t-calculation interval;
Wherein, W=Wzf+Wsl+Wss+max ﹛ Wjl, Wjg, Wzj ﹜+W
outward, in formula:
Wzf-river evaporation water requirement; Wsl-river seepage water requirement; Wss-river course sediment transport water requirement; Wjl-ecological basic discharge in river channel; Wjg-River Landscape environmental Water Requirement; Wzj-river dilution self-cleansing water requirement; W
outwardwater demand of ecological environment outside-river course;
River evaporation water requirement Wzf is calculated by unit area evaporation capacity × water surface area;
River seepage water requirement Wsl is obtained by leak factor × average water yield cheek of river history;
Sediment transport water requirement Wss in river course is obtained by the mean value calculation of the moon over the years sand content;
Ecological basic discharge in river channel Wjl is calculated by Tennant method;
River Landscape environmental Water Requirement Wjg is obtained by Pavlov's Si base formulae discovery;
River dilution self-cleansing water requirement Wzj is obtained by the mathematic interpolation of present situation pollutant total load and target contaminant total load;
Water demand of ecological environment W outside river course
outwardcalculated by building area quota method.
3. quote the urban small river ecological moisturizing dispatching patcher of method described in claim 1 or 2 for one kind, comprise small pump on moisturizing source, the moisturizing pipeline connecting river and moisturizing source, moisturizing pipeline and water pump control cabinet corresponding to small pump, it is characterized in that: in the river of the downstream direction of relative complement waterpipe delivery outlet, be provided with flow meter, described flow meter and water pump control cabinet are communicatively connected to control machine in.
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