41 results about "River drainage" patented technology

The invention provides an intelligent monitoring system for area pollution discharge. The system includes an area pollution source intelligent environment on-line supervisory subsystem, an urban sewage conveying intelligent supervisory subsystem, a river drainage basin environmental pollution source intelligent supervisory subsystem and an information sharing layer, wherein the area pollution source intelligent environment on-line supervisory subsystem is used for monitoring a pollution discharge enterprise as a pollution source, the urban sewage conveying intelligent supervisory subsystem is used for monitoring a conveying pipeline, the river drainage basin environmental pollution source intelligent supervisory subsystem is used for monitoring an abnormal condition of a river cross section, and the three subsystems send monitoring data to the information sharing layer and utilize the monitoring data of the information sharing layer to determine the area, time and pollution source of an abnormal pollution discharge accident. Through the system provided by the invention, overall-process monitoring management from generation, conveying, purification to discharge of sewage can be realized, plenty of manpower and material resources are saved, operation is convenient and a result is accurate.

The invention discloses a Nen River drainage basin typical region water ecology risk assessment method based on a system dynamics decision model, and relates to the Nen River drainage basin typical region water ecology risk assessment method. The method comprises the following steps: simulating different treatment schemes for tributary afflux, nonpoint source discharge, upland water and riverside pollution discharge factors which affect the amount of a pollution source input into the Nierji reservoir through the system dynamics decision model to achieve an affect that an ecological risk of a reservoir is lowered, and scheme decisions are realized ; evaluating the water ecology risk situations of different point locations in different time periods in a lake reservoir on the basis of a water ecology risk index system; constructing a sample space of a Bayesian network on the basis of Netica software; and calculating ecology risk happening probabilities of different degrees when each index is changed so as to realize Nen River drainage basin typical region water ecology risk assessment.The method is applied to river drainage basin typical region water ecology risk assessment.

The invention relates to a method for artificial domestication and cultivation of semilabeo notabilis. The method comprises the steps of 1, building a semilabeo notabilis cultivation pond; 2, collecting and selecting parent fish fry; 3, conducting food habit conversion; 4, conducting artificial domestication of fry; 5, observing gonad development; 6, conducting domestication management. By the adoption of the method, massive cultivation and population continuation of semilabeo notabilis are facilitated, native commercial fish aquaculture and new species are added, ecological balance of a water area is maintained, local native fish resources are protected, population quantity is increased, biodiversity and ecological balance are maintained, and conditions are provided for semilabeo notabilis cultivation and considerable economic benefits are obtained by means of the natural resources in the Dabang river drainage basin.

The invention discloses a drought evaluation system for a continental river ternary structure. The method comprises the following steps: 1) performing division evaluation of drought; 2) constructing mountainous area drought evaluation indexes; 3) constructing desert region drought evaluation indexes; 4) constructing oasis region drought evaluation indexes; 5) performing drought evolution rule analysis, namely performing drought evolution rule analysis on a mountainous area, a desert region and an oasis region of a continental river drought region according to analysis of the steps 2, 3 and 4. Compared with the prior art, the method provided by the invention has the advantages that a natural-artificial binary water circulation theory is taken as a principle line, a drought evaluation system suitable for a continental river drought region 'high mountain-desert-oasis' ternary structure is constructed from the aspect of a water resource system, the problem of difficultly evaluating the drought in the continental river drought region for a long time is solved, and characteristics of drought events are scientifically and comprehensively reflected. The drought evaluation system can be widely applied to drought evaluation on the continental river drought region, and is especially applicable to drought quantification evaluation on the Aksu river drainage basin.

The invention discloses a safety warning system of a flooded plant. The safety warning system comprises a PLC (Programmable Logic Controller) module, a monitoring module, an upper computer server module, a warning workstation module and relevant network equipment, wherein the monitoring module communicates with the PLC module, and the PLC module is connected with the upper computer server module and the warning workstation module through the relevant network equipment and an Ethernet network; the monitoring module comprises an upstream monitoring module, a downstream monitoring module and a plant monitoring module; the warning workstation module comprises an upstream warning module, a downstream warning module, a drainage basin warning module and a plant warning module. The safety warning system is safe and reliable, and strong in steadiness; river drainage areas, weather information, working conditions of pumping equipment and other statuses are intensively monitored, so that modernization, automation and intelligent management of flood prevention are really embodied, the valuable time for leadership decisions and loss reduction caused by water leakage is strived, and people's life and property safety are effectively ensured.

The invention discloses a water and sand remote monitoring system and method based on double-link communication. The water and sand remote monitoring system comprises a far end monitoring subsystem used for collecting water regimen data, audio data and video data of a river drainage basin. The water regimen data are sent to a near end demonstration subsystem through a satellite communication link, and the water regiment data, the audio data and the video data are sent to the near end demonstration subsystem through a primary communication link. The near end demonstration subsystem detects the working state of the primary communication link according to the water regiment data received by the satellite communication link, the data collected by the satellite communication link or the primary communication link are selected to serve as calculation data according to a detection result, and demonstration is performed on a graphical interface of a computer.

The invention relates to a healthy river ecosystem construction method based on a water ecological function partition, and the method comprises the steps: determining all levels of rivers in a target drainage basin and drainage basins corresponding to all levels of rivers through an ArcGIS hydrological module based on the DEM data of the target drainage basin, and taking the (i + 1) th level of river drainage basin as a partition basic unit of the ith level of water ecological function partition; acquiring natural geographical driving factor data and partition representation index data of the (i + 1) th-level river basin; performing clustering analysis on the natural geographical driving factor data and the partition representation index data of each (i + 1) th-level river basin in the target basin to obtain partitions on the ith-level water ecological function partition; obtaining drainage basin ecological health index data of each subarea on the ith-level water ecological function subarea, and evaluating the health condition of each subarea on the ith-level water ecological function subarea; ecological restoration measures of different levels are formulated based on the health condition of each subarea and the water ecological function subarea level corresponding to the subarea, and a healthy river ecological system is constructed.

The invention discloses a ship lock downstream entrance area navigation water flow condition prediction method, and the method comprises the steps: calculating the water flow surface longitudinal and transverse flow velocity extreme values of the downstream entrance area of the ship lock through employing the following formula, and setting the longitudinal and transverse flow velocity extreme values of the entrance area as vymax and vxmax, wherein V represents the flow velocity of an incoming flow section; h represents the incoming flow section water depth; alpha represents an inflow angle, and the angle refers to an included angle between a river drainage center line and an entrance area navigation center line and is called as an inflow angle for short; and BE represents the width of the entrance area. The invention further discloses a ship lock downstream entrance area plane arrangement design and optimization method by applying the method. The navigation water flow condition of the downstream entrance area of the ship lock can be predicted, so that engineering designers can conveniently apply to entrance area design.

The invention discloses environment-friendly glass fibres. The environment-friendly glass fibres are prepared from the sludge in the Qiantang river drainage basin, aluminium oxide, calcium oxide, magnesium oxide, titanium dioxide, tungsten trioxide, yttrium oxide, cerium dioxide and lithium oxide in percentage by weight. A preparation method of the environment-friendly glass fibres comprises the following steps: drying, crushing and screening the sludge in the Qiantang river drainage basin first; then, mixing the sludge in the Qiantang river drainage basin and other components, and then, melting and preparing the mixture into vitreous humour at the temperature of 1,400 to 1,500 DEG C; finally, cooling the vitreous humour to 1,250 to 1,350 DEG C and drawing. According to the environment-friendly glass fibres, the sludge which is deposited or filtered in a tap water purifying process of a water supply plant in the Qiantang river drainage basin is taken as a main raw material, so that the pollution to the environment caused by chemical raw materials is reduced; meanwhile, the environment-friendly glass fibres can also help the water supply plant to treat deposited substance or filtered substance; high performance of the glass fibres is ensured, and meanwhile, the cost is reduced to the greatest extent; in addition, the used raw materials do not contain the compounds of boron and fluorine; the environment is not influenced by embedding the raw materials after the raw materials are wasted; the environment-friendly glass fibres have good industrial application value.

The invention provides a drainage basin sensor coverage net optimizing method based on genetic algorithm multi-objective optimization. The genetic algorithm multi-objective optimization is used for converting the drainage basin sensor coverage net optimization problem into the 0 / 1 multi-objective planning problem, and the reasonable and optimal selection of a monitoring sensor coverage net is finally achieved through the genetic algorithm operations such as heredity, interaction and variation of chromosomes and the comparison of the adaptive values of the monitoring sensor coverage net. In addition, a plurality of evaluation indexes are adopted to carry out the weighting evaluation on the adaptive degree of the monitoring sensor coverage net, the evaluation indexes include the monitoring node drainage basin characteristic coefficient, the monitoring node sensor network transmission range coefficient, the monitoring node sensor using cost coefficient and the monitoring node environment interference coefficient, a decision maker can flexibly adjust the index weight according to the layout of the river drainage basin sensor coverage net, and accordingly, the adaptability of the algorithm is improved.

The invention discloses a riparian zone vegetation coverage extraction method based on mountain river classification, and the method comprises the steps: obtaining the gradient, slope direction, change rate and elevation of each point of a mountain river required by a model, and extracting the features of a water system; grading the rivers in the required mountainous area; cutting the preprocessedremote sensing data image by adopting a boundary corresponding to the drainage basin area to obtain a remote sensing data image of the whole required mountainous area river drainage basin; obtainingthe vegetation coverage of each river reach, and calculating the vegetation coverage of the riparian zone of the required mountainous river; and estimating the vegetation coverage change trend according to the watershed vegetation coverage multi-year change rate. The method can conveniently and quickly obtain the vegetation coverage of the riparian zone of the mountainous river, avoids consuming too much manpower and material resources, improves the precision, can reflect the ecological environment of different river sections of the mountainous river, belongs to an important part of ecologicalriver evaluation, and is very high in practicality and wide in applicability.

The invention discloses a drainage system integrated management platform based on a water networking platform, relates to the field of drainage system integrated management, and aims to solve the problems of disordered resource transmission, poor timeliness and lack of a unified management platform in the prior art. Comprising a water networking platform, a model analysis module, an early warning and alarm module and a comprehensive management module, and the water networking platform, the model analysis module, the early warning and alarm module and the comprehensive management module are connected in sequence; the operation state of the factory network river drainage system is visually displayed and monitored in real time, so that safe operation and comprehensive management of the whole drainage system are enhanced; by combining the powerful map function of the GIS, unified standardization and graphical management of a drainage system in a monitoring area are realized, and a corresponding early warning and alarm module is provided, so that scientific and effective scheduling schemes and maintenance and repair plans can be formulated, the comprehensive management capability of the drainage system is improved, and the crisis and scheduling management capability is improved.

The invention discloses a water column for river drainage and a drainage method, which are beneficial to guaranteeing long-term smoothness of a drainage channel. The water column mainly comprises a column body provided with a water inlet and a water outlet, and a column water retaining wall for changing flow direction of water in the river and leading the water to flow from the water inlet into the column body is disposed on the column body. An internal water stop structure is further disposed inside the column body. The drainage method mainly includes: installing the water column in the river; communicating the water outlet of the column body with an inlet of the drainage channel; reserving the water inlet of the column body to be between the column water retaining wall and the water outlet of the column body, and using the column water retaining wall to change the flow direction of the water, flowing towards the drainage channel, in the river, so that the water is led to flow from the water inlet of the column body into the column body and flow from the water outlet of the column body into the drainage channel.

The invention discloses a two-way cross flow pump station using a one-way cross flow pump. The two-way cross flow pump station comprises a pump station main body; and a river channel is divided by thepump station main body into an inner river and an outer river. The two-way cross flow pump station is characterized by comprising an inner river first gate and an inner river water inlet gate near the inner river, and an outer river drainage gate and an outer river second gate near the outer river; the inner river first gate communicates with the outer river drainage gate through a first water channel; and the outer river second gate communicates with the inner river water inlet gate through a second water channel. The two-way cross flow pump station further comprises a separator for isolating the first water channel from the second water channel; the separator is provided with an exchange channel for communicating the first water channel with the second water channel; the one-way cross flow pump is arranged in the exchange channel; a water outlet end of the one-way cross flow pump is towards the first water channel; and a water inlet end of the one-way cross flow pump is towards thesecond water channel. The invention aims to solve the defects in the prior art, and provides the two-way cross flow pump station for direct reversing drainage by using the one-way cross flow pump without changing the direction of the one-way cross flow pump.

The invention discloses a drought evaluation system for a continental river ternary structure. The method comprises the following steps: 1) performing division evaluation of drought; 2) constructing mountainous area drought evaluation indexes; 3) constructing desert region drought evaluation indexes; 4) constructing oasis region drought evaluation indexes; 5) performing drought evolution rule analysis, namely performing drought evolution rule analysis on a mountainous area, a desert region and an oasis region of a continental river drought region according to analysis of the steps 2, 3 and 4. Compared with the prior art, the method provided by the invention has the advantages that a natural-artificial binary water circulation theory is taken as a principle line, a drought evaluation system suitable for a continental river drought region 'high mountain-desert-oasis' ternary structure is constructed from the aspect of a water resource system, the problem of difficultly evaluating the drought in the continental river drought region for a long time is solved, and characteristics of drought events are scientifically and comprehensively reflected. The drought evaluation system can be widely applied to drought evaluation on the continental river drought region, and is especially applicable to drought quantification evaluation on the Aksu river drainage basin.

The invention discloses diversion treatment and conveying equipment for a municipal sewage pipe network, which includes a river drainage pipe and a sewage pipe. An underground rainwater well is arranged on the top of the river drainage pipe, and one side of the underground rainwater well is sequentially connected from top to bottom. There are clean water pipes, sewage pipes and sediment pipes. One end of the clean water pipes, sewage pipes and sediment pipes is connected with a pipeline connection device, and one side of the pipeline connection device is sequentially connected from top to bottom. There are river confluence pipes, sewage confluence pipes and mud discharge pipes, the river confluence pipes are connected to river drainage pipes, the sewage confluence pipes are connected to sewage pipes, and a screw conveyor is arranged on the mud discharge pipes. One end of the mud discharge pipe extends to the ground, the river drainage pipe is provided with a first one-way valve, the sewage pipe is provided with a second one-way valve, and the clean water pipe is provided with a clean water pump. The present invention has It has the characteristics of strong practicability and saving water treatment volume.

The invention relates to a method for artificial domestication and cultivation of semilabeo notabilis. The method comprises the steps of 1, building a semilabeo notabilis cultivation pond; 2, collecting and selecting parent fish fry; 3, conducting food habit conversion; 4, conducting artificial domestication of fry; 5, observing gonad development; 6, conducting domestication management. By the adoption of the method, massive cultivation and population continuation of semilabeo notabilis are facilitated, native commercial fish aquaculture and new species are added, ecological balance of a water area is maintained, local native fish resources are protected, population quantity is increased, biodiversity and ecological balance are maintained, and conditions are provided for semilabeo notabilis cultivation and considerable economic benefits are obtained by means of the natural resources in the Dabang river drainage basin.

The invention discloses a river patrol full-spectrum water quality data analysis method, and relates to the technical field of water quality monitoring, spectral data of a river water sample and a river drainage basin are respectively obtained through an infrared spectrum and an ultraviolet spectrum, and the obtained spectral data are processed to obtain water quality data of different river drainage basins; the method comprises the following steps of: obtaining the proportions of different components in water and the distribution condition of algae and garbage in a river channel and a river basin, setting the proportion threshold of the components according to the components, comparing the proportion of each component in the obtained river water sample with the corresponding proportion threshold, and if the proportion exceeds the proportion threshold, determining that the river water sample is a river water sample. If yes, marking the corresponding components and the river channel drainage basin; and marking the river channel drainage basins of which the proportions corresponding to the components exceed a proportion threshold value in all the river channel drainage basins, and finishing tracing of the components exceeding the standard.

The application relates to a garden waterlogging drainage device, which includes a throttling assembly provided at the outlet of the river channel. The throttling assembly includes a throttling frame, a throttling plate, an elastic expansion part and a driving part, and the top of the throttling frame is hinged to the river channel. , the elastic expansion part is set between the throttle frame and the river, and is located on the side of the throttle frame close to the drain, the throttle plate is set on the throttle frame, and is slidably connected with the throttle frame, and the driving part is set on the throttle frame. between the frame and the throttle plate, and is used to drive the throttle plate to slide on the throttle frame. The application has the effect of improving the waterlogging prevention ability of the inner river channel of the garden and realizing the automatic regulation of the drainage volume of the river channel.

The invention relates to an economic development and energy demand analysis method and device based on a drainage basin. The method comprises the following steps: acquiring night light data of the drainage basin and provinces and cities passed by the drainage basin within a preset time period; carrying out correction processing on the night light data to obtain night light images of the drainage basin and the provinces and cities through which the drainage basin passes; determining a thermodynamic diagram corresponding to the drainage basin according to the night light image, and performing economic space aggregation analysis on the thermodynamic diagram to obtain an analysis result; and determining the spatial-temporal pattern evolution trend of economic development and energy consumption of the drainage basin and the provinces and cities passed by the drainage basin according to the analysis result. Through the technical scheme, the related close relationship among economic development, energy consumption and drainage basin elements is disclosed, and a relatively objective reference basis is provided for research of the economic pattern and the energy consumption pattern of the Yellow River drainage basin.

The invention relates to a water outlet management and control system. According to the drainage outlet management and control system, through cooperation of the water supply and drainage system, the collection system, the control system, the power supply system and the cloud platform system, drainage characteristic information such as the drainage liquid level, the water volume and the water quality can be automatically detected and collected, and the drainage outlet management and control system further has the function of storing images of the drainage outlet. According to the system provided by the invention, through automatic detection of equipment, the workload of manual discharge port management and control can be effectively reduced; effective data and image support are provided for source tracing and evidence obtaining of river channel drainage through water quality detection and automatic image recognition of drainage. The system provided by the invention effectively intercepts a video needing drainage alarm through the edge computing gateway and transmits the video to the cloud platform, so that a certificate can be effectively reserved and the consumption of network flow can be reduced, thereby realizing the purposes of unattended operation of drainage port management and control, small maintenance amount, small network flow and accurate detection; and a reliable and effective management and control method is provided for the management and control of the river drainage port.

The invention relates to an artificial wetland for sewage interception treatment at a river outfall, which comprises an interception and filtration grid frame and an interception revolving door, the interception and filtration grid frame and the interception revolving door are enclosed with the river bank to form an internal treatment space for sewage interception and the interception rotation The door is directly opposite to the drainage outlet on the river bank. The intercepting and filtering net frame is an inner and outer double-layer net frame structure and the periphery is covered by a filter net cover. The interior of the intercepting and filtering net frame is filled with filter packing, and aquatic plants are planted on the filtering packing, and the sewage is intercepted and treated internally. In the water body of the space, there are a number of biofilm fillers, a number of slow-release carbon source supplementary pipes and a number of oxygen-enriched phosphorous supplementary pipes. The invention can realize high-efficiency purification treatment of pollutants in drainage, effectively reduce the content of nitrogen and phosphorus organic pollutants, and at the same time ensure the flood discharge capacity of river outlets.

The invention discloses a liftable bottom shaft rotating plane gate and an application thereof, belonging to the technical field of water conservancy machinery. The liftable bottom shaft rotating plane gate includes pier, gate, lifting rotary machine and sleeve rod; the gate is divided into a vertical moving part and a rotating moving part, and the vertical moving part includes the side beam and the walking support of the gate. The rotating moving part is the door leaf of the gate; the door leaf of the gate can be rotated by a certain angle to the inland river or the outer river side through the rotating function of the lifting rotary machine; the gate can be lifted to the above the water surface; the side wheel arranged on the door leaf of the gate is a spherical roller, and the buried side rail is an arc-shaped track to adapt to the rotational movement of the door leaf. The invention also discloses the application of the above gate. The invention has ingenious conception, wide application range and various functions. The gate can perform vertical movement and two-way rotation movement, realizes the functions of two-way water retaining and water diversion, and is convenient for drainage of inland rivers and overhaul and maintenance of the gate.

The invention discloses a water and sand remote monitoring system and method based on double-link communication. The water and sand remote monitoring system comprises a far end monitoring subsystem used for collecting water regimen data, audio data and video data of a river drainage basin. The water regimen data are sent to a near end demonstration subsystem through a satellite communication link, and the water regiment data, the audio data and the video data are sent to the near end demonstration subsystem through a primary communication link. The near end demonstration subsystem detects the working state of the primary communication link according to the water regiment data received by the satellite communication link, the data collected by the satellite communication link or the primary communication link are selected to serve as calculation data according to a detection result, and demonstration is performed on a graphical interface of a computer.

The invention discloses a system and method for checking river drainage points based on changes in sewage fingerprints. The system includes at least one acquisition device and at least one monitoringdevice arranged behind a known drainage point; the acquisition device obtains a fluorescence map of a river node where the acquisition device is located and sends the fluorescence map to the monitoring device; the monitoring device obtains all characteristic vertices of the fluorescence map and constructs the feature geometry based on all the feature vertices; the monitoring device compares the feature geometry with the drainage geometry of a drainage point; after difference between the feature geometry and the drainage geometry is equal to or greater than a difference threshold, whether rivernodes or drainage points between the river node where the acquisition device is located and the drainage point have abnormality is determined by the monitoring device. The system is advantaged in that the system can obtain the fluorescence map of the known drainage point at a back river node, whether the river nodes or the drainage points between the river node where the acquisition device is located and the drainage point have abnormality is determined by the monitoring device according to the fluorescence map and a drainage map of the known drainage point.

The invention belongs to the field of river drainage technologies and provides a sponge city river channel water level control method. The method includes the following steps that: a current inner river channel water level value and a current outer river channel water level value are obtained; whether the current inner river channel level value exceeds the highest value of a preset water level range is judged; and if the current inner river channel water level value exceeds the highest value of the preset water level range, water in an inner river channel is discharged to an outer river channel until the inner river channel water level value reaches the lowest value of the preset water level range. With the method of the present invention adopted, the water level in the river channel can be effectively controlled, and the water level in the river channel can be prevented from being too high to affect a city.

The utility model discloses a sponge city building structure, and belongs to the technical field of sponge cities, the sponge city building structure comprises a base layer, the bottommost layer in the base layer is filled with a filter layer, the top of the filter layer is filled with an inverted filter base layer and a soil layer, and segmentation teeth are fixedly arranged between the inverted filter base layer and the soil layer; green landscapes can be planted at the top of the soil layer, the top of the inverted filter base layer is filled with a permeable layer, diversion holes are formed in the positions, close to the permeable layer, of the upper ends of the cutting teeth, a drainage pipe is arranged in the filter layer and penetrates through the outer side of the base layer to extend outwards, and the outwards-extending end of the drainage pipe is fixedly connected with a precipitation well. The lower end of one side of the precipitation well is fixedly communicated with a water storage pipe, the tail end of the water storage pipe is communicated with a reservoir, and the upper end of one side of the precipitation well is fixedly communicated with a river channel drainage pipe; a perfect rainwater ecological circulation system is constructed, runoff and waterlogging risks are reduced, and the ecological toughness and the sustainable utilization level of water resources are improved.

The application relates to the technical field of water conservancy and hydropower engineering and discloses a dam shoulder karst underground river drainage and horizontal pressure relief system and a construction method, the dam shoulder karst underground river drainage and horizontal pressure relief system comprises an underground river pipeline blocking module used for filling the underground river pipeline and forming a water retaining structure; an underground river water drainage and removal module used for connecting the water bodies inside and outside the mountain and realizing flow transfer of the water bodies; a karst gas passage module used for connecting the gases inside and outside the mountain and realizing flow transfer of the gases; the underground river water drainage and removal module and the karst gas passage module form a gas passage and horizontal pressure relief structure, and the gas passage and horizontal pressure relief structure keeps the water balance between the inside and outside of the mountain based on the principle of a communicating vessel. The construction method is based on the dam shoulder karst underground river drainage and horizontal pressure relief system. Through cooperation of the three modules, multiple functions such as drainage, gas passage and horizontal pressure relief are realized, the gas passage and horizontal pressure relief structure based on the principle of a communicating vessel is formed, is used for drainage during the construction period and water and gas balance during the operation period, and is used for processing the dam shoulder karst underground river passage, so that the influence of karst water and gas on the dam is effectively solved.

The invention belongs to the field of municipal bridge engineering, and particularly relates to a bridge sidewalk structure integrating multiple functions of rainwater permeation, filtration, river drainage and backwashing. Comprising sidewalk roadside curbs, a sidewalk handrail foundation, a waterproof base layer, a water filtering and flow guiding layer, a backwashing pipeline system and a rapid water permeable layer, and the sidewalk roadside curbs and the sidewalk handrail foundation are arranged on a bridge body. The waterproof base layer, the water filtering and flow guiding layer and the rapid permeable layer are sequentially arranged between the sidewalk roadside curb and the sidewalk handrail foundation from bottom to top, the backwashing pipeline system is arranged in the water filtering and flow guiding layer, and a drainage pipe is arranged in the sidewalk handrail foundation and communicated with the water filtering and flow guiding layer. The system meets the river channel direct discharge standard; sidewalk rainwater is independently and directly drained into the river channel, and municipal pipe network burden is relieved. The sidewalk realizes rapid water guide and drainage, and no accumulated water is formed on the surface. After the filter material is blocked, excavation and replacement are not needed, and the filtering function is recovered through in-situ backwashing.

The invention discloses a crossbred first filial generation of Qingshuijiang river carp and a crossbreeding method. In the method, males of Xingguo red carp as male parents and females of Qingshuijiang river carp as female parents are subjected to the processes such as parent selecting, breeding pool preparation, fish spawning nest setup, artificial induced spawning and matched breeding to carry out crossbreeding of fry, the crossbred first finial generation obtained by breeding is like the female parents Qingshuijiang river carp in shape, has high growth speed and high disease resistance and stress tolerance and retains the advantage of Qingshuijiang river carp that the flesh is firm and fresh, it is avoided that decrease in productivity and economy of fry and fingerlings due to inbreeding is easily present in the breeding of the parents of Qingshuijiang river carp in the Qingshuijiang river drainage basin having short spatial distance, and high-quality robust local crossbred carp fingerlings are provided for rice fields, ponds and intensive cage farming in the Qingshuijiang river drainage basin in Qiandongnan, Guizhou province.