CN111441307A - Urban inland river and lake water body flow distribution isolation method - Google Patents
Urban inland river and lake water body flow distribution isolation method Download PDFInfo
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Abstract
The invention discloses a water diversion and isolation method for urban inland rivers and lakes, which comprises the steps of firstly arranging a diversion island in a lake, arranging an artificial inland lake-entering river connected with the diversion island on the lake, arranging an artificial lake-exiting inland river connected with the diversion island on the lake, and arranging the diversion island in a region between an lakeentering port of the artificial lake-entering inland river and a lakeexiting port of the artificial lake-exiting inland river. The island head of the diversion island is positioned at the inner side of the lakeinlet of the artificial inland river. When the water quality of the river entering the lake is better, the high-quality water can be ensured to enter the lake, and the water quality of the lake and the island river can be synchronously improved; when the water quality of the lake-entering inland river is poor, the lake-entering inland river is directly discharged through the island-side river, so that poor water entering the lake is effectively avoided, and the stable water quality of the lake water body is guaranteed; in the period of rainstorm and flood, the water level of the lake can be reduced in advance, and the water inlet gate of the lake is closed, so that the initial rainwater is drained through the island river. The diversion island is a lake center island of the whole water body of the lake and the inland river, and the urban grade can be improved through body type and landscape optimization design.
Description
Technical Field
The invention belongs to the technical field of hydraulic engineering, and particularly relates to a water body flow-dividing and isolating method for urban inland rivers and lakes.
Background
The urban lake refers to a lake located in an urban area or a suburban area inside a city, such as the east lake of wuhan, the west lake of hanzhou, the golden lake of suzhou, the basalt lake of Nanjing, the west lake of Fuzhou, and the like, and plays an important role in tourism, leisure and entertainment, flood regulation, storage and drainage, and city grade and ecological environment improvement. The urban inland river is an urban ecological corridor, is a main place for people to rest, entertain and closely feel nature, and has important functions of flood control, waterlogging drainage, sewage collection, pollution discharge and the like.
The urban inland rivers and lakes are often communicated with each other and are important supplementary water sources of the urban lakes. Due to the influence of high-strength human activities, urban inland rivers often face more serious water environment problems, once polluted water in the inland rivers enter lakes, the water quality of the lakes is directly influenced, and in addition, the urban lakes often have inherent defects of weak self-purification capacity, poor pollution-resistant load capacity, long water changing period and the like, and the direct communication between the urban inland rivers and the lakes leads to the multiplied increase of the water quality risk of the lakes. In addition, the daily fluctuation of the water level of the inland river is large under the influence of daily sewage collection and discharge, flood control and waterlogging drainage and the like of the urban inland river, and particularly the daily change of the water level of the inland river system in the tidal river network area is large. For urban lakes, the daily operation is usually maintained at a certain landscape level, and the direct communication between the urban rivers and lakes also affects the stability of the lake level.
Therefore, in order to maintain the stable water quality of the urban lake and the landscape water level, the urban inland river and the lake need to be properly divided and isolated, so that the inland river water can enter the replenishment lake when the inland river water quality is better, and the inland river water quality is poorer so as to avoid poor water from entering the lake. Generally, a way of directly building a gate at the entrance of a river channel into a lake is adopted to control water flow to flow into the lake, and the treatment way can not ensure that inland river sewage does not enter the lake, and influences the normal functions of sewage receiving, pollution discharging, flood control and drainage of the inland river. In addition, in the above manner, the functions of regulating, storing and draining flood born by the urban lakes in the rainstorm flood period cannot be normally exerted, and the initial rainwater can directly enter the lakes to influence the water quality of the lakes.
Disclosure of Invention
(1) Technical problem to be solved
The urban inland river is directly communicated with the lake, the inland river is an important water supply source for the lake, and the water quality of the lake is directly influenced when sewage of the inland river enters the lake; the daily water level fluctuation of the urban inland river is large, and the direct communication of the urban inland river and the lake can influence the stability of the landscape water level of the lake; generally, the method of directly building a gate at the entrance of an inland river into a lake cannot ensure that inland river sewage does not enter the lake, not only influences the normal functions of sewage collection and discharge, flood control and drainage of the inland river in the city, but also causes the abnormal functions of regulating, storing and drainage of the flood borne by the lake in the rainstorm period, and the initial rainwater can directly enter the lake to influence the water quality of the lake.
(2) Technical scheme
In order to solve the technical problems, the invention provides a water diversion and isolation method for an urban river and a lake, which comprises the steps of firstly arranging diversion islands in a lake, arranging an artificial inland lake-entering river connected with the diversion islands on the lake, and arranging an artificial lake-exiting river connected with the diversion islands on the lake, wherein the number of the artificial lake-entering river, the artificial lake-exiting river and the diversion islands is not less than 1, the diversion islands are arranged in the area between the lake-entering artificial inland river lake-entering port and the lake-exiting artificial inland river-exiting port, the island heads of the diversion islands are arranged at the inner sides of the lake-entering artificial inland river-entering port, the tail parts of the diversion islands are arranged at the inner sides of the lake-exiting artificial inland river-exiting port, the water area between the diversion island bodies and the lake line is called as an island side river, and the distance between the island heads and the lake shore line is B1, the distance between the island tail of the diversion island and the shore of the lake is B2, wherein B1= B2, B1 and B2 are determined by the maximum flood regulation capacity borne by the lake, the outer side of the island body of the diversion island and the shore of the lake form an equidistant interval B3, B3 is the river width of the island river, the river width of the artificial inland river entering the lake is B4, B3 is not less than B4, the daily control water level H1 of the island river is not higher than the daily control water level H2 of the lake, and the river bottom elevation of the island should be smoothly connected with the river bottom elevations of the artificial inland river entering the lake and the artificial inland river bottom of the lake; then a water gate a is arranged between the island head of the diversion island and the shoreline of the lake, the gate width of the water gate a is Ba = B1, and the gate bottom plate elevation of the water gate a is not less than the bottom elevation of the artificial inland river entering the lake; a water gate B is arranged between the tail of the diversion island and the shoreline of the lake, the gate width Bb = B2 of the water gate B, and the elevation of a gate bottom plate of the water gate B is not less than the elevation of the bottom of the lake; a water gate c is arranged at the downstream of the island edge river, the gate width Bc = B3 of the water gate c, and the gate bottom plate elevation of the water gate c is not less than the bottom elevation of the island edge river;
the flexible allocation of the water flow of the artificial inland lake-entering river between the lake and the island river is realized through different opening and closing forms of the sluice a, the sluice b and the sluice c, wherein:
① when the water quality of the artificial inland river entering the lake is better, opening the sluice a, closing the sluice c to make the better water body enter the lake, and flexibly opening and closing the sluice b according to the water level condition of the lake to make the water body in the lake flow and maintain stable landscape water level, or synchronously opening the sluice a, the sluice b and the sluice c with different gate openings to realize the sharing of the high quality water body between the lake and the river beside the island;
② when the water quality of the artificial inland lake is poor, closing the sluice a and the sluice b, and opening the sluice c, the flowing water is discharged directly through the island river, effectively avoiding the poor water entering the lake, ensuring the stable water quality of the lake water body, and normally playing the daily functions of sewage collection and discharge;
③ when rainstorm and flood period, lowering lake water level in advance, closing the sluice a to let the initial rainwater drain through the island river, and then flexibly opening and closing the sluice a, the sluice b and the sluice c according to water level conditions, or opening the sluice a, the sluice b and the sluice c synchronously with different gate opening degrees, not only can effectively avoid the influence of the initial rainwater on lake water quality, but also can give full play to the flood stagnation regulation and storage function of the lake.
When a plurality of lake-entering artificial inland rivers need to be arranged, 1-2 diversion islands need to be arranged in the lake, gates are arranged among the 2 diversion islands, 1-3 lake-entering artificial inland rivers connected with the diversion islands are arranged on the lake, and the lake-entering mouths of the lake-entering artificial inland rivers are not connected.
(3) Advantageous effects
The invention has the beneficial effects that:
when the water quality of the river entering the lake is better, the high-quality water can be ensured to enter the lake, the reasonable distribution of the high-quality incoming water in the lake and the inland river can be realized by combining the control of the sluice group, and the water quality of the lake and the island side river can be synchronously improved; when the water quality of the water entering the lake inland river is poor, the water is directly discharged from the island-side river, so that poor water entering the lake is effectively avoided, the water quality stability of the lake water body is guaranteed, and the daily sewage receiving and discharging functions of the original inland river can be normally exerted; in the period of rainstorm and flood, the water level of the lake can be reduced in advance, the water inlet gates of the lake are closed, initial rainwater is discharged through the island-side river, and the water gate group is flexibly opened and closed according to the water level condition, so that the influence of the initial rainwater on the water quality of the lake body can be effectively avoided, and the flood-retaining regulation and storage functions of the lake can be fully exerted; the diversion island is a lake center island of the whole water body of the lake and the inland river, and the urban grade can be improved through body type and landscape optimization design.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic view of water diversion and isolation in the case of 1 inland river flowing in from the northwest side of a lake and flowing out from the south side of the lake according to the present invention;
FIG. 2 is a schematic view of water diversion and isolation under the condition that 1 inland river flows in from the west side of a lake and flows out from the south side of the lake in the invention;
FIG. 3 is a schematic view of water diversion and isolation in the case of 1 inland river flowing in from the north side of a lake and flowing out from the south side of the lake according to the present invention;
FIG. 4 is a schematic view of water diversion and isolation in the case of 1 inland river flowing in from the east side of a lake and flowing out from the south side of the lake according to the present invention;
FIG. 5 is a schematic view of water diversion and isolation in the case of 1 inland river flowing in from the northeast of a lake and flowing out from the south of the lake according to the present invention;
FIG. 6 is a schematic view of water diversion and isolation of 2 inland rivers flowing in from the west side and the north side of a lake and flowing out from the south side of the lake by using 1 diversion island according to the invention;
FIG. 7 is a schematic view of water diversion and isolation of 2 inland rivers flowing in from the north and east sides of a lake and flowing out from the south side of the lake by using 1 diversion island according to the present invention;
FIG. 8 is a schematic view of water diversion and isolation of 2 inland rivers flowing in from the west side and the north side of a lake and flowing out from the south side of the lake by using 2 diversion islands according to the present invention;
FIG. 9 is a schematic view of water diversion and isolation of 2 inland rivers flowing in from the north and east sides of a lake and flowing out from the south side of the lake by using 2 diversion islands according to the present invention;
FIG. 10 is a schematic view of water diversion and isolation of 3 inland rivers flowing in from the north, east and west sides of a lake and flowing out from the south side of the lake by using 2 diversion islands according to the present invention;
FIG. 11 is a schematic diagram of water diversion and isolation of 3 inland rivers flowing in from the north, east and west sides of a lake and flowing out from the south side of the lake by using 2 diversion islands according to the invention.
Detailed Description
The technical solutions in the embodiments of the present invention are further clearly and completely described below with reference to the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
The embodiment provides a method for separating and isolating a city inland river from a lake water body, which comprises the steps of firstly arranging a diversion island 2 in a lake 1, arranging an artificial inland lake-entering river 3 connected with the lake 1, enabling the artificial inland lake-entering river 3 to flow in from the northwest side of the lake 1, arranging an artificial lake-exiting river 4 connected with the lake 1 on the lake 1, enabling the artificial lake-exiting river 4 to flow out from the south side of the lake 1, arranging the diversion island 2 in a region between a lake inlet of the artificial lake-entering river 3 and a lake outlet of the artificial lake-exiting river 4, arranging an island head of the diversion island 2 at the inner side of the lake inlet of the artificial lake-entering river 3, arranging an island tail of the diversion island 2 at the inner side of the lake outlet of the artificial lake-exiting river 4, arranging a water body between an island body of the diversion island 2 and a lake 1 as an island edge river 5, and arranging a distance between the island head of the diversion island 2 and an island line of the lake 1 as B1, the distance between the tail of the diversion island 2 and the shore of the lake 1 is B2, wherein B1= B2, B1 and B2 are determined by the maximum flood regulation capacity borne by the lake 1, the outer side of the island body of the diversion island 2 and the shore of the lake 1 are at equal intervals B3, B3 is the river width of the island-side river 5, the river width of the lakeingoing artificial river 3 is B4, wherein B3 is not less than B4, the daily control water level H1 of the island-side river 5 is not higher than the daily control water level H2 of the lake 1, and the elevation of the bottom of the island-side river 5 is smoothly connected with the elevations of the lakeingoing artificial river 3 and the bottom of the lakeoutgoing artificial river 4; then a water gate a6 is arranged between the island head of the diversion island 2 and the shore of the lake 1, the gate width Ba = B1 of the water gate a6, and the gate bottom plate elevation of the water gate a6 is not less than the bottom elevation of the artificial inland river 3 entering the lake; a water gate B7 is arranged between the tail of the diversion island 2 and the shore of the lake 1, the gate width Bb = B2 of the water gate B7, and the elevation of the gate bottom plate of the water gate B7 is not less than the bottom elevation of the lake 1; a water gate c8 is arranged at the downstream of the island edge river 5, the gate width Bc = B3 of the water gate c8, and the gate bottom plate elevation of the water gate c8 is not less than the bottom elevation of the island edge river 5.
In this embodiment, when the water quality of the artificial inland river 3 entering the lake is better, the water gate a6 is opened, the water gate c8 is closed, the better water body enters the lake 1, and the water gate b7 is flexibly opened and closed according to the water level condition of the lake 1, so that the lake water body keeps flowing and a stable landscape water level is maintained; or the sluice a6, the sluice b7 and the sluice c8 are synchronously opened by different sluice openings, so that the high-quality water body is shared by the lake 1 and the island river 5; when the water quality of the river entering the lake is poor, closing the water gate a6 and the water gate b7, and opening the water gate c8, so that the running water is directly discharged through the island-side river 5; effectively avoiding poor water from entering the lake, not only ensuring the stable water quality of the water body of the lake 1, but also normally playing the daily sewage receiving and discharging functions of the artificial inland river 3 entering the lake and the artificial inland river 4 leaving the lake; in the period of rainstorm and flood, the water level of the lake 1 is reduced in advance, the sluice a6 is closed, initial rainwater is discharged through the island river 5, the sluice a6, the sluice b7 and the sluice c8 are flexibly opened and closed according to the water level conditions, or the sluice a6, the sluice b7 and the sluice c8 are synchronously opened by different sluice openings, so that the influence of the initial rainwater on the water quality of the lake 1 can be effectively avoided, and the flood detention and storage functions of the lake 1 can be fully exerted.
Example two
The embodiment provides a water diversion isolation method for an urban inland river and a lake, which comprises the steps of firstly arranging a diversion island 2 in a lake 1, arranging an artificial inland lake-entering river 3 connected with the lake 1, enabling the artificial inland lake-entering river 3 to flow in from the west side of the lake 1, arranging an artificial lake-exiting river 4 connected with the lake 1 on the lake 1, enabling the artificial lake-exiting river 4 to flow out from the south side of the lake 1, and basically enabling other hydraulic buildings and methods for controlling a sluice to be the same as those in the first embodiment, and not describing in a repeated manner.
EXAMPLE III
The embodiment provides a water diversion isolation method for an urban inland river and a lake, which comprises the steps of firstly arranging a diversion island 2 in a lake 1, arranging an artificial inland lake-entering river 3 connected with the lake 1, enabling the artificial inland lake-entering river 3 to flow in from the north side of the lake 1, arranging an artificial lake-exiting river 4 connected with the lake 1 on the lake 1, enabling the artificial lake-exiting river 4 to flow out from the south side of the lake 1, and basically enabling other hydraulic buildings and methods for controlling a sluice to be the same as those in the first embodiment, and not describing in a repeated manner.
Example four
The embodiment provides a water diversion isolation method for an urban inland river and a lake, which comprises the steps of firstly arranging a diversion island 2 in a lake 1, arranging an artificial inland lake-entering river 3 connected with the lake 1, enabling the artificial inland lake-entering river 3 to flow in from the east side of the lake 1, arranging an artificial lake-exiting river 4 connected with the lake 1 on the lake 1, enabling the artificial lake-exiting river 4 to flow out from the south side of the lake 1, and basically enabling other hydraulic buildings and methods for controlling a sluice to be the same as those in the first embodiment, and not describing in a repeated manner.
EXAMPLE five
The embodiment provides a water diversion isolation method for an urban inland river and a lake, which comprises the steps of firstly arranging a diversion island 2 in a lake 1, arranging an artificial inland lake-entering river 3 connected with the lake 1, enabling the artificial inland lake-entering river 3 to flow in from the northeast side of the lake 1, arranging an artificial lake-exiting river 4 connected with the lake 1 on the lake 1, enabling the artificial lake-exiting river 4 to flow out from the south side of the lake 1, and basically enabling other hydraulic buildings and methods for controlling a sluice to be the same as those in the first embodiment, and not performing the description.
EXAMPLE six
The embodiment provides a method for separating and isolating water bodies in an urban river and a lake, which comprises the steps of firstly arranging a diversion island 2 in a lake 1, arranging an artificial lake-entering inland river 3 and a second artificial lake-entering inland river 9 connected with the lake 1, enabling the artificial lake-entering inland river 3 to flow in from the north side of the lake 1, enabling the second artificial lake-entering inland river 9 to flow in from the west side of the lake 1, arranging an artificial lake-exiting inland river 4 connected with the lake 1, enabling the artificial lake-exiting inland river 4 to flow out from the south side of the lake 1, enabling the diversion island 2 to be arranged in a region between an inlet of the artificial lake-entering inland river 3 and an outlet of the artificial lake-exiting inland river 4, enabling an island head of the diversion island 2 to be arranged inside the inlet of the artificial lake-entering inland river 3, enabling an island tail of the diversion island 2 to be arranged inside the outlet of the artificial lake-exiting inland river 4, enabling a water body between an island body of the diversion lake island 2 and a land line of the diversion lake 1 to be called as an island 5, the distance between the island head of the diversion island 2 and the shore of the lake 1 is B1, the distance between the island tail of the diversion island 2 and the shore of the lake 1 is B2, wherein B1= B2, B1 and B2 are determined by the maximum flood regulation and storage capacity borne by the lake 1, the outer side of the island body of the diversion island 2 and the shore of the lake 1 are at equal intervals of B3, the B3 is the river width of the island edge river 5, the river width of the lake-entering artificial inland river 3 is B4, B3 is not less than B4, the daily control water level H1 of the island edge river 5 is not higher than the daily control water level H2 of the lake 1, and the elevation of the bottom of the island edge river 5 is smoothly connected with the elevations of the lake-entering artificial inland river 3 and the bottom of the lake-exiting artificial inland river 4.
A water gate a6 is arranged between the island head of the diversion island 2 and the shore of the lake 1, the gate width Ba = B1 of the water gate a6, and the gate bottom plate elevation of the water gate a6 is not less than the bottom elevation of the artificial inland river 3 entering the lake; a water gate B7 is arranged between the tail of the diversion island 2 and the shore of the lake 1, the gate width Bb = B2 of the water gate B7, and the elevation of the gate bottom plate of the water gate B7 is not less than the bottom elevation of the lake 1; a water gate c8 is arranged downstream of the island edge river 5, the gate width Bc = B3 of the water gate c8, and the gate bottom plate elevation of the water gate c8 is not less than the bottom elevation of the island edge river 5; a water gate d10 is arranged on the island-side river 5 between the lake-entering artificial inland river 3 and the second lake-entering artificial inland river 9, the gate width Bd = Bc of the water gate d10, and the gate floor elevation of the water gate d10 is not less than the bottom elevation of the island-side river 5.
In the embodiment, when the water quality of the lake-entering artificial inland river 3 and the second lake-entering artificial inland river 9 is better, the water gate a6 and the water gate d10 are opened, the water gate c8 is closed, the better water body enters the lake 1, and the water gate b7 is flexibly opened and closed according to the water level condition of the lake 1, so that the water body of the lake keeps flowing and the stable landscape water level is maintained; or the sluice a6, the sluice b7, the sluice c8 and the sluice d10 are synchronously opened by different gate opening degrees, so that the sharing of high-quality water bodies in the lake 1 and the island river 5 is realized; when the water quality of the river entering the lake is poor, closing the water gate a6 and the water gate b7, and opening the water gate c8 and the water gate d10, so that the running water is directly discharged through the island river 5; the poor water entering the lake is effectively avoided, the water quality stability of the lake 1 water body is ensured, and the daily sewage receiving and discharging functions of the lake entering artificial inland river 3, the second lake entering artificial inland river 9 and the lake exiting artificial inland river 4 can be normally exerted; in the torrential rain and flood period, the water level of the lake 1 is reduced in advance, the sluice a6 is closed, initial rainwater is discharged through the island river 5, the sluice a6, the sluice b7 and the sluice c8 are flexibly opened and closed according to the water level conditions, or the sluice a6, the sluice b7, the sluice c8 and the sluice d10 are synchronously opened by different sluice openings, so that the influence of the initial rainwater on the water quality of the lake 1 can be effectively avoided, and the flood detention and storage functions of the lake 1 can be fully exerted.
EXAMPLE seven
The embodiment provides a water diversion and isolation method for an urban inland river and a lake, which comprises the steps of firstly arranging a diversion island 2 in a lake 1, arranging an artificial inland lake-entering river 3 and a second artificial inland lake-entering river 9 which are connected with the diversion island 1 on the lake 1, enabling the artificial inland lake-entering river 3 to flow in from the north side of the lake 1, enabling the second artificial lake-entering river 9 to flow in from the east side of the lake 1, basically enabling other hydraulic buildings and a method for controlling a sluice to be the same as the sixth embodiment, and not carrying out the description.
Example eight
The embodiment provides a method for separating and isolating a water body in an urban river from a lake, which comprises the steps of firstly arranging a diversion island 2 and a second diversion island 11 in a lake 1, arranging an artificial lake-entering river 3 and an artificial lake-entering river 9 connected with the lake 1, enabling the artificial lake-entering river 3 to flow in from the north side of the lake 1, enabling the artificial lake-entering river 9 to flow in from the west side of the lake 1, arranging an artificial lake-exiting river 4 connected with the lake 1, enabling the artificial lake-exiting river 4 to flow out from the south side of the lake 1, enabling the diversion island 2 to be arranged in the area between the inlet opening of the artificial lake-entering river 3 and the outlet opening of the artificial lake-exiting river 4, enabling the island head of the diversion island 2 to be arranged on the inner side of the inlet opening of the artificial lake-entering river 3, enabling the island tail of the diversion island 2 to be arranged on the inner side of the outlet opening of the artificial lake 4, enabling the water body between the island 2 and the island line of the diversion island 1 to be called as an island 5, the second diversion island 11 is located in the area between the lakeoutlet of the second lakeentering artificial inland river 9 and the lakeoutlet of the lakeexiting artificial inland river 4, the island head of the second diversion island 11 is located on the inner side of the lakeoutlet of the second lakeentering artificial inland river 9, the island tail of the second diversion island 11 is located on the inner side of the lakeoutlet of the lakeexiting artificial inland river 4, and the water area between the island body of the second diversion island 11 and the lakeoutlet of the lakeoutlet 1 is called as a second island side river 12.
The distance between the island head of the diversion island 2 and the shore of the lake 1 is B1, the distance between the island tail of the diversion island 2 and the shore of the lake 1 is B2, wherein B1= B2, B1 and B2 are determined by the maximum flood regulation and storage capacity borne by the lake 1, the outer side of the island body of the diversion island 2 and the shore of the lake 1 are at equal intervals of B3, the B3 is the river width of the island edge river 5, the river width of the lake-entering artificial inland river 3 is B4, B3 is more than or equal to B4, the daily control water level H1 of the island edge river 5 is not higher than the daily control water level H2 of the lake 1, and the elevation of the bottom of the island edge river 5 is smoothly connected with the elevations of the lake-entering artificial inland river 3 and the bottom of the lake-exiting artificial inland river 4; then a water gate a6 is arranged between the island head of the diversion island 2 and the shore of the lake 1, the gate width Ba = B1 of the water gate a6, and the gate bottom plate elevation of the water gate a6 is not less than the bottom elevation of the artificial inland river 3 entering the lake; a water gate B7 is arranged between the tail of the diversion island 2 and the shore of the lake 1, the gate width Bb = B2 of the water gate B7, and the elevation of the gate bottom plate of the water gate B7 is not less than the bottom elevation of the lake 1; a water gate c8 is arranged between the diversion island 2 and the island tail of the second diversion island 11, the gate width Bc = B3 of the water gate c8, and the gate floor elevation of the water gate c8 is not less than the bottom elevation of the lake 1; the 11 island heads of second diversion island with set up floodgate d10 between the bank of lake 1 the 11 island tails of second diversion island with set up floodgate e13 between the bank of lake 1, floodgate d 10's floodgate width Bd = Bc, floodgate d 10's floodgate floor elevation is not less than the bottom elevation of second island limit river 12, floodgate e 13's floodgate floor elevation is not less than the bottom elevation of second island limit river 12, wherein Be = Bd = Bc = B3.
In the embodiment, when the water quality of the artificial inland lake-entering river 3 and the artificial inland lake-entering river 9 is better, the water gate a6 and the water gate d10 are opened, the water gate c8, the water gate b7 and the water gate e13 are closed, so that the better water body enters the lake 1, and the water gate c8, the water gate b7 and the water gate e13 are flexibly opened and closed according to the water level condition of the lake 1, so that the water body of the lake keeps flowing and a stable landscape water level is maintained; or the sluice a6, the sluice b7, the sluice c8, the sluice d10 and the sluice e13 are synchronously opened by different sluice openings, so that the sharing of high-quality water bodies among the lake 1, the island side river 5 and the second island side river 12 is realized; when the water quality of the river entering the lake is poor, the water gate a6, the water gate c8 and the water gate d10 need to be closed, the water gate b7 and the water gate e13 need to be opened, and then the running water is directly discharged through the island edge river 5 and the second island edge river 12; the poor water entering the lake is effectively avoided, the water quality stability of the lake 1 water body is ensured, and the daily sewage receiving and discharging functions of the lake entering artificial inland river 3, the second lake entering artificial inland river 9 and the lake exiting artificial inland river 4 can be normally exerted; in the period of heavy rain and flood, the water level of the lake 1 is reduced in advance, the water gate a6 and the water gate d10 are closed, then the water gate c8 is opened, initial rainwater is discharged through the island river 5, or the water gate a6, the water gate b7, the water gate c8, the water gate d10 and the water gate e13 are synchronously opened by different gate opening degrees, so that the influence of the initial rainwater on the water quality of the lake 1 can be effectively avoided, and the flood detention and storage functions of the lake 1 can be fully exerted.
Example nine
The embodiment provides a water diversion and isolation method for an urban inland river and a lake, which comprises the steps of firstly arranging a diversion island 2 and a second diversion island 11 in a lake 1, arranging an artificial inland lake-entering river 3 and an artificial second lakeentering river 9 connected with the lake 1, enabling the artificial inland lake-entering river 3 to flow in from the north side of the lake 1, enabling the artificial second lakeentering river 9 to flow in from the east side of the lake 1, and basically enabling other hydraulic buildings and methods for controlling a sluice to be the same as those in the eighth embodiment without being described in a repeated manner.
Example ten
The embodiment provides a method for separating and isolating a city internal river from a lake water body, which comprises the steps of firstly arranging a diversion island 2 and a second diversion island 11 in a lake 1, arranging an artificial lake-entering internal river 3, an artificial lake-entering internal river 9 and an artificial lake-entering internal river 14 which are connected with the lake 1, wherein the artificial lake-entering internal river 3 flows in from the north side of the lake 1, the artificial lake-entering internal river 9 flows in from the west side of the lake 1, the artificial lake-entering internal river 14 flows in from the east side, the artificial lake 1 is provided with an artificial lake-exiting internal river 4 connected with the lake 1, the artificial lake-exiting internal river 4 flows out from the south side of the lake 1, the diversion island 2 is arranged in a region between the lake-entering internal river 3 and the lake-exiting internal river 4, the island head of the diversion island 2 is arranged on the inner side of the lake-entering internal river 3, the island tail of the diversion island 2 is arranged on the inner side of the lake-exiting artificial lake-exiting internal river 4, the water area between the diversion island 2 island body and the lake 1 shore is called as an island side river 5, the second diversion island 11 is positioned in the area between the lake inlet of the second lakeingin artificial inland river 9 and the lake outlet of the lakeout artificial inland river 4, the island head part of the second diversion island 11 is positioned at the inner side of the lake inlet of the second lakeout artificial inland river 9, the island tail part of the second diversion island 11 is positioned at the inner side of the lake outlet of the lakeout artificial inland river 4, and the water area between the island body of the second diversion island 11 and the lake 1 shore is called as a second island side river 12.
The distance between the island head of the diversion island 2 and the shore of the lake 1 is B1, the distance between the island tail of the diversion island 2 and the shore of the lake 1 is B2, wherein B1= B2, B1 and B2 are determined by the maximum flood regulation and storage capacity borne by the lake 1, the outer side of the island body of the diversion island 2 and the shore of the lake 1 are at equal intervals of B3, the B3 is the river width of the island edge river 5, the river width of the lake-entering artificial inland river 3 is B4, B3 is more than or equal to B4, the daily control water level H1 of the island edge river 5 is not higher than the daily control water level H2 of the lake 1, and the elevation of the bottom of the island edge river 5 is smoothly connected with the elevations of the lake-entering artificial inland river 3 and the bottom of the lake-exiting artificial inland river 4; then a water gate a6 is arranged between the island head of the diversion island 2 and the shore of the lake 1, the gate width Ba = B1 of the water gate a6, and the gate bottom plate elevation of the water gate a6 is not less than the bottom elevation of the artificial inland river 3 entering the lake; a water gate B7 is arranged between the tail of the diversion island 2 and the shore of the lake 1, the gate width Bb = B2 of the water gate B7, and the elevation of the gate bottom plate of the water gate B7 is not less than the bottom elevation of the lake 1; a water gate c8 is arranged between the diversion island 2 and the island tail of the second diversion island 11, the gate width Bc = B3 of the water gate c8, and the gate floor elevation of the water gate c8 is not less than the bottom elevation of the lake 1; a water gate d10 is arranged between the island head of the second diversion island 11 and the shoreline of the lake 1, a water gate e13 is arranged between the island tail of the second diversion island 11 and the shoreline of the lake 1, the gate width Bd = Bc of the water gate d10, the gate floor elevation of the water gate d10 is not less than the bottom elevation of the second island side river 12, the gate floor elevation of the water gate e13 is not less than the bottom elevation of the second island side river 12, wherein Be = Bd = Bc = B3; a sluice f15 is arranged in the middle section of the island-side river 5, the sluice f15 is positioned at the upstream of the river inlet of the third lakeentering artificial inland river 14, and the sluice width Bf = Be = Bd = Bc = B3 of the sluice f 15.
In the embodiment, when the water quality of the artificial inland lake-entering river 3, the artificial inland lake-entering river 9 and the artificial inland lake-entering river 14 is better, the sluice a6, the sluice d10 and the sluice f15 are opened, the sluice c8, the sluice b7 and the sluice e13 are closed, so that the better water body enters the lake 1, and the sluice c8, the sluice b7 and the sluice e13 are flexibly opened and closed according to the water level condition of the lake 1, so that the water body in the lake keeps flowing and the stable landscape water level is maintained; or the sluice a6, the sluice b7, the sluice c8, the sluice d10 and the sluice e13 are synchronously opened by different sluice openings, so that the sharing of high-quality water bodies among the lake 1, the island side river 5 and the second island side river 12 is realized; when the water quality of the river entering the lake is poor, the water gate a6, the water gate c8 and the water gate d10 need to be closed, the water gate b7, the water gate e13 and the water gate f15 need to be opened, and then the running water is directly discharged through the island side river 5 and the second island side river 12; the poor water entering the lake is effectively avoided, the water quality stability of the lake 1 water body is ensured, and the daily sewage receiving and discharging functions of the lake entering artificial inland river 3, the second lake entering artificial inland river 9, the third lake entering artificial inland river 14 and the lake exiting artificial inland river 4 can be normally exerted; in the period of rainstorm and flood, the water level of the lake 1 is reduced in advance, the sluice a6 and the sluice d10 are closed, then the sluice c8 is opened, initial rainwater is discharged through the island river 5, or the sluice a6, the sluice b7, the sluice c8, the sluice d10, the sluice e13 and the sluice f15 are opened synchronously by different sluice openings, so that the influence of the initial rainwater on the water quality of the lake 1 can be effectively avoided, and the flood retaining and storage functions of the lake 1 can be fully exerted.
EXAMPLE eleven
The embodiment provides a water diversion and isolation method for an urban inland river and a lake, which comprises the steps of firstly arranging a diversion island 2 and a second diversion island 11 in a lake 1, arranging an artificial lake-entering inland river 3, an artificial second lake-entering inland river 9 and an artificial third lake-entering inland river 14 which are connected with the lake 1, enabling the artificial lake-entering inland river 3 to flow in from the north side of the lake 1, enabling the artificial lake-entering inland river 9 to flow in from the east side of the lake 1, enabling the artificial lake-entering inland river 14 to flow in from the west side, and basically enabling other hydraulic buildings and methods for controlling a sluice to be the same as those in the embodiment, wherein the methods are not described in an accumulated manner.
The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (3)
1. A method for separating and isolating water bodies in rivers and lakes in cities is characterized by comprising the following steps:
firstly, a diversion island (2) is arranged in a lake (1), an artificial lake inland river (3) connected with the lake (1) is arranged on the lake (1), an artificial lake inland river (4) connected with the lake (1) is arranged on the lake (1), wherein the number of the artificial lake inland river (3), the artificial lake inland river (4) and the diversion island (2) is not less than 1, the diversion island (2) is arranged in the area between the inlet of the artificial lake inland river (3) and the outlet of the artificial lake inland river (4), the island head of the diversion island (2) is arranged at the inner side of the inlet of the artificial lake inland river (3), the island tail of the diversion island (2) is arranged at the inner side of the outlet of the artificial lake inland river (4), and the water area between the island body of the diversion island (2) and the lake shoreline of the lake (1) is called as an island edge river (5), the distance between the island head of the diversion island (2) and the shore of the lake (1) is B1, the distance between the island tail of the diversion island (2) and the shore of the lake (1) is B2, wherein B1= B2, B1 and B2 are determined by the maximum flood regulation and storage capacity borne by the lake (1), the outer side of the island body of the diversion island (2) is equidistantly spaced from the shore of the lake (1) by B3, the B3 is the river width of the island-side river (5), the river width of the lake-entering artificial inland river (3) is B4, B3 is not less than B4, the daily control water level H1 of the island-side river (5) is not higher than the daily control water level H2 of the lake (1), and the elevation of the bottom of the island-side river (5) is smoothly connected with the elevations of the lake-entering artificial inland river (3) and the lake-exiting artificial inland river (4);
then, a water gate a (6) is arranged between the island head of the diversion island (2) and the shoreline of the lake (1), the gate width Ba = B1 of the water gate a (6), and the gate floor elevation of the water gate a (6) is not less than the bottom elevation of the artificial inland river (3) entering the lake; a water gate B (7) is arranged between the tail of the diversion island (2) and the shoreline of the lake (1), the gate width Bb = B2 of the water gate B (7), and the elevation of the gate bottom plate of the water gate B (7) is not less than the elevation of the bottom of the lake (1); a water gate c (8) is arranged downstream of the island edge river (5), the gate width Bc = B3 of the water gate c (8), and the gate bottom plate elevation of the water gate c (8) is not less than the bottom elevation of the island edge river (5);
finally, the flexible allocation of the water flow of the artificial inland lake (3) between the lake (1) and the island river (5) is realized through different opening and closing forms of the sluice a (6), the sluice b (7) and the sluice c (8), wherein:
① when the water quality of the river in the lake is better, the sluice a (6) is opened, the sluice c (8) is closed, the better water body enters the lake (1), and the sluice b (7) is flexibly opened and closed according to the water level condition of the lake (1), or the sluice a (6), the sluice b (7) and the sluice c (8) are synchronously opened by different sluice openings;
② when the water quality of the river in the lake is poor, closing the water gate a (6) and the water gate b (7), and opening the water gate c (8), the running water is discharged directly through the island river (5);
③ when rainstorm and flood period, lowering the water level of lake (1) in advance, closing the sluice a (6) to discharge the initial rainwater through island river (5), and then flexibly opening and closing the sluice a (6), the sluice b (7) and the sluice c (8) according to the water level condition, or synchronously opening the sluice a (6), the sluice b (7) and the sluice c (8) with different sluice openings.
2. A method for separating water bodies in rivers and lakes in cities according to claim 1, which is characterized in that two separating islands (2) are arranged inside a lake (1), and a gate is arranged between the two separating islands (2).
3. The method for separating the water bodies of the urban inland rivers and the lakes according to the claim 1, characterized in that 2 artificial inland rivers (3) connected with one lake (1) are arranged on the lake, and the lake inlets of the artificial inland rivers (3) are not connected.
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| CN112726487A (en) * | 2020-12-07 | 2021-04-30 | 福建省水利水电勘测设计研究院 | Method for guaranteeing multifunctional river and lake communication of urban river and lake through water level control |
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