34 results about "Diversion dam" patented technology

The invention discloses an ecological corridor for removing nitrogen and phosphorus of micro-polluted river water and a construction method thereof, which belong to the field of river water pollution treatment. The ecological corridor is positioned in a pond with an area of over 4,000m<2>; two or more parallel flow guide dams are formed along the length direction of the pond; adjacent flow guide dams are opposite to each other; the length of the flow guide dam is at least three fourths the length of the pond; a flow guide corridor is formed between the flow guide dam and a shore side and between the flow guide dams; floating plants or a fixed ecological floating bed is arranged in the flow guide corridor; and the water surface coverage of the ecological floating bed is 10 to 20 percent. The flow guide corridor is constructed by establishing the flow guide dam and the ecological corridor is constructed by arranging the ecological floating bed. The water quality index of most of the micro-polluted river water treated by the ecological corridor can reach and exceed the IV-V class standard in the national surface water quality standard (GB2002-3838). The purified water body finally flows out through an overflow outlet at the rear end of the system and used for fishery, landscapes, agricultural irrigation water and the like.

The invention discloses a method for reducing and controlling waste pollutants in scattered culture zones of hills. The method includes the following steps: A. constructing a biomass purifying tank; B. constructing an ecological trench wetland system, namely constructing an ecological trench cross section, constructing a water retaining ridge, and configuring ecological trench plants, wherein the ecological trench plant configuration is divided into three sections, namely a front section at the upstream of an ecological trench, a middle section at the middle-upper part of the ecological trench, and a rear section at the middle-lower part of the ecological trench; C. constructing a diversion dam; and D. constructing a tail-end three-level wetland system, including a primary green myriophyllum verticillatum ecological wetland, a secondary economic wetland, and a third ecological fishpond. The method is low in building and running cost and convenient to operate, has a good governance effect, and can effectively reduce and control pollutants such as COD (chemical oxygen demand), nitrogen, phosphor and the like in polluted water. According to the method, culture wastes in a water collecting zone are treated by an ecological trench constructed in a natural drainage ditch and the ecological wetland system constructed at the tail end. The method can be applied to hills in the vast subtropical zone in south of the middle and lower reaches of the Yangtze river region in China, and has certain economic benefits.

The comprehensive control and treatment method of underground water resource intruded by sea water includes the following steps: surveying the topography and its surface features of control area in overall; finding out the main stream position and direction of alluvial fan of the quaternary system, further finding out the monadnock within nearest distance of left and right banks of main stream position of quaternary system alluvial fan; using connecting line between two monadnocks as central line of grout curtain wall, curtain grouting is started from bedrock and grouting to sea level elevation; setting diversion dam on entrance of river in the control area; setting several sunk well with large gushing water on the main stream position of quaternary system allavial fan at up-stream side of curtain wall.

The invention discloses a debris flow diversion dam capable of automatically distributing drainage quantity and silt stopping quantity and a design method of the debris flow diversion dam. The debris flow diversion dam comprises a dam foundation and a dam body arranged on the dam foundation, diversion holes connected with a drainage channel are arranged at the bottom of the dam body, a diversion weir connected with a slit stopping field is arranged at the top of the dam body and positioned laterally above the diversion holes, the top elevation of the diversion holes is identical with the bottom elevation of the diversion weir, the size of the section of the diversion holes is determined according to the designed flow of the drainage channel, and the size of the section of the diversion weir is determined according to the designed flow of the slit stopping field. Compared with the prior art, the debris flow diversion dam capable of automatically distributing drainage quantity and silt stopping quantity and the design method of the debris flow diversion dam have the advantages that the diversion holes are fully utilized to control flow of debris flow entering the drainage channel, so that the debris flow is reasonably and efficiently distributed to the drainage channel and the slit stopping field, debris flow exceeding a designed standard is prevented from spillover in the drainage channel to threaten protected objects in the downstream, and the debris flow exceeding the designed standard is also prevented from flowing into a main river to form a dammed lake to cause secondary disasters.

The invention discloses a schizothoracinae fish fertilized egg incubation method. The method includes the steps that firstly, a hatchery is selected, wherein A, the hatchery should be built on a river beach or mountain spring water downstream bottomland; B, water source construction is carried out, and a sandbank is arranged in the middle of a selected riverway; C, a pollution discharge ditch is distributed, a water channel lower than the hatchery is dredge in an underground area of the hatchery, river water is reserved on an upstream diversion dam and used for the pollution discharge ditch; secondly, the hatchery is built, wherein A, a hatching pond is built; B, a sunshade facility is erected; thirdly, the fertilized egg incubation method is carried out; fourthly, management is carried out. The fertilized egg incubation method includes the steps that firstly, the water amount of the hatching pond is controlled and water quality requirements are met; secondly, after fertilizer eggs basically absorb water, the fertilizer eggs are evenly distributed in the pond and do not accumulate; thirdly, fry which are just incubated are temporarily bred on the spot till the fry start to eat, and the fry are recycled after flat swimming. The method is easy and convenient to use, cost is low, operation is easy and convenient, the semi-natural hatchery is built in the position of a natural riverway, and the requirement of incubation work of hundreds of thousands to millions of schizothoracinae fish fertilized eggs is met.

The invention discloses a terraced rice field and ecological ditch organically combined agricultural non-point source pollution purification system. The system comprises a drainage ditch system, a soil ridge system, a collecting tank system, an aqueduct system and a paddy field marsh system, wherein the drainage ditch system is provided with a drainage ditch; the drainage ditch is provided with a diversion dam, a water inlet and a water outlet; the collecting tank system is provided with a first collecting tank, a second collecting tank and a third collecting tank; the aqueduct system is provided with a first aqueduct, a second aqueduct and a third aqueduct; the paddy field marsh system is provided with a first-level paddy field marsh, a second-level paddy field marsh and a third-level paddy field marsh. By arranging the three levels of paddy field marshes distributed stepwise to effectively filter sewage, the terraced rice field and ecological ditch organically combined agricultural non-point source pollution purification system provided by the invention effectively plays a role of the last defensive line for hindering non-point surface pollutants from entering the water bodies.

The invention relates to a movable diversion device for debris flow interception. The movable diversion device is arranged in a debris flow passage formed between highlands on two sides and comprisesa stopping and silting diversion dam and two movable flow guidance mechanisms. The stopping and silting diversion dam divides the debris flow into two streams and constructs multiple new stopping andsilting areas, so that the debris flow can slow down, settle down and partially stop. The movable flow guidance mechanisms can automatically judge whether partial interception is required according tothe flow size of the debris flow. When the flow of the debris flow is large, the movable flow guidance mechanisms are pushed to deflect to filter and divert the debris flow, and guide part of the filtered debris flow into the stopping and silting areas for storage. Therefore, the flow of the debris flow is reduced, and the impact and destructiveness of the debris flow are greatly reduced. Moreover, an interception system has strong resistance to geological hazards. Even if partial damage occurs, the prevention and control effect cannot be greatly affected.

The invention relates to a diversion and purification system for an artificial lake water body and a construction method thereof. The diversion and purification system comprises a first gabion diversion dam arranged inside the artificial lake water body and around a lake inlet, wherein the first gabion diversion dam divides the artificial lake water body into a water inlet area and a purificationand confluence area; aquatic plants are arranged in the purification and confluence area; the first gabion diversion dam comprises a dam body arranged at the bottom of the artificial lake water body and a downstream slope arranged on the downstream face of the dam body; a water-permeable material layer serves as the slope face of the downstream slope; rock ballasts are filled between the slope face of the downstream slope and the dam body; the dam body is formed by stacking gabions; each gabion comprises a gabion net as an external frame, a geotextile bag filled into the gabion net, and a water distributing and purifying filler filled into the geotextile bag. The diversion and purification system not only can promote circulation of the artificial lake water body in the whole lake area to purify water, but also can reduce the energy loss and enhance the landscape effect of an artificial lake.

The invention relates to a hydraulic trash remover for a bottom grid diversion dam of a power station, comprising a movable grid bar support frame, a guide wheel positioning device, a hydraulic jack, a lateral pulley positioning device, a corridor, a hydraulic jack supporting seat and fixed grid bars, wherein the hydraulic jack and a lateral positioning pulley are installed on both sides of the corridor, and the hydraulic jack is positioned on the hydraulic jack supporting seat fixed on concrete of a dam body; and the fixed grid bars are installed on the same plane of the movable grid bar support frame on the top of the dam body and are fixed on walls on both sides of the dam body, gaps between movable grid bars and the fixed grid bars installed are well adjusted, the guide wheel positioning device is installed on the lateral face of the movable grid bar support frame so as to ensure that the movable grid bar support frame can be leftwards and rightwards positioned, and a hydraulic system in a control room on the dam top is connected with hydraulic pipelines embedded in grooves on both sides of the dam body. As the structure is adopted, by controlling the hydraulic jack, the movable grid bar support frame is operated to move up and down to make reciprocating movement so that silt can be loosened, and the impulsive force of water is utilized for automatically carrying away the silt, thereby achieving the purposes of automatic trash removal and time and labor saving.

The invention discloses a hedging energy dissipation type debris flow diversion system. The debris flow diversion system is arranged in a debris flow channel formed between highlands on the two sidesand comprises a diversion dam and a hedging guide device, wherein the diversion dam comprises a first dam body arranged in the middle of the debris flow channel, the tip of a semi-cone faces the incoming direction of debris flow so as to form two first flow diversion channels on the two sides of first dam body, and the hedging guide device comprises a first arc-shaped guide dam and a second arc-shaped guide dam which are arranged in front of the flowing directions of the two first flow diversion channels. The debris flow diversion system is characterized in that the diversion dam and the hedging guide device are matched with each other, the diversion dam is used for guiding debris flow into two strands, the hedging guide device is used for guiding and changing the flow direction of the twostrands of debris flow, kinetic energy is eliminated after hedging and gathering of the two strands of debris flow, and then impact force and destructiveness of debris flow are greatly reduced; and the debris flow diversion system is high in geological disaster resistance, and even if part of the flow diversion system is damaged, the prevention and control effect cannot be greatly influenced.

The invention discloses a rainfall management and control system suitable for mine ecological environment restoration and treatment. The system comprises a plurality of rainfall management and control units arranged step by step from high to low according to mountain trends; the adjacent rainfall management and control units are connected through drainage facilities to realize step-by-step water storage; each rainfall management and control unit comprises a slag water storage body; the slag water storage bodies are located between a mountain slope tunnel face and a water control diversion dam; the water control diversion dam enables residual water generated after the slag water storage bodies are saturated to flow to the next rainfall management and control unit and a mine platform at the other side through the drainage facilities; transversely-arranged planting ridges are arranged on the ground surfaces of the slag water storage bodies at intervals; the table top of each planting ridge is of an inwards-inclined structure; enclosure ridges are arranged on the edge of the mine platform; grid-shaped slag flushing reduction ridges are arranged on the inner side areas of the enclosure ridges; and vegetation is planted between the slag flushing reduction ridges. The rainfall management and control system suitable for mine ecological environment restoration and treatment can reduce the occurrence of water and soil loss and debris flow natural disasters, improves the utilization rate of natural rainfall, and is suitable for the technical field of mine ecological environment restoration.

The invention is a method for treating a plain river course. The technical problem to be solved by the method is to completely solve a world-class problem of plain river course regulation. According to the technical scheme, a diversion dam is constructed at a position between the boundary point of a canyon river and a lowland river and the boundary point of the lowland river and an aboveground river, two river channels are separated from the diversion dam, one is a flood water flow river, the other is a low water flow river, the navigation capacity is expanded, and the expanded navigation capacity is maintained throughout the year.

The invention relates to a system for irrigating and repairing a salt and alkali wet land by paper wastewater. A non-irrigated reference region connecting rod is arranged to be connected to an intermittent irrigating region. The intermittent irrigating region is connected to a plurality of equally spaced water inlets. The upper part of the intermittent irrigating region is connected to a continuous irrigating region. The continuous irrigating region is connected to an intake, a sand filter pond, a diversion dam, a sewer, a main dam and an inflow water-gate. The plurality of equally spaced water inlets and the inflow water-gate are jointly connected to an effluent of a pond system; a 2000 mu reed wet land is selected as an ecological remediation demonstration project and the paper wastewater is irrigated continuously. The model project area is 653*153m=99909m<2>, 9.99hm<2>, graded from (L1-L5); the paper wastewater flows through the graded wet land successively according to a set flow;the irrigating mode is constant irrigation which is low in flow rate, equal in irrigating depth and equal in hydraulic load; irrigation is carried out for 15 days at an interval of 15 days, and the effluent enters a drainage channel. The system has the beneficial effects of repairing the ecological system of the salt and alkali wet land and protecting the natural environment.

The invention relates to a large tidal range deepwater causeway closure gap closure steel frame cage structure and a closure gap closure construction method therefore. The structure is characterized in that the steel frame cage structure comprises section steel frameworks, connecting ribs, sliding grooves, sliding strips, fixing ribs and reinforcing meshes, wherein the steel frame cage is a truncated pyramid body, the steel frame cage parallel to the two sides of a closure gap and the outer sides of the two section steel frameworks making contact with a soft permeable material are provided with fixing steel pipes respectively, the two sides, perpendicular to the closure gap, of the steel frame cage are provided with the corresponding number of sliding grooves and sliding strips respectively, and the steel frame cage is fixed on a concrete interlocking piece through a lock catch on the soft permeable material. The closure gap closure construction method of the large tidal range deepwater causeway closure gap closure steel frame cage structure comprises the following steps that the lock catch is prefabricated and placed, early-stage preparation is carried out, closure dam is carriedout, the construction of a diversion dam is carried out, technical observation is carried out, the steel frame cage is manufactured, the steel frame cage is subjected to hoisting and placing, riprap and coping are carried out, enclosed gas construction is carried out, a breakwater core is subjected to hydraulic reclamation and the like, a water-permeable frame cage is placed on a closure gap closure dam to form an closure dam framework, the riprap is carried out in the frame cage to finish closure, and the positioning intercepting effects are good.

The invention discloses a precipitation management and control system suitable for the restoration and management of mine ecological environment. , the precipitation control unit includes a slag water storage body, and the slag water storage body is located between the face of the hillside and the water control diversion dam. and the mine platform on the other side, the slag water body is provided with horizontally arranged planting ridges at intervals on the surface. There are square-shaped slag-reducing ridges, and vegetation is planted between the slag-reducing ridges. The invention can reduce the occurrence of natural disasters of soil erosion and debris flow, improve the utilization rate of natural precipitation, and is suitable for the technical field of mine ecological environment restoration.

The invention belongs to the technical field of resource environment engineering, and particularly discloses a method suitable for purifying a polluted water body in a stone foundation riverbed of a plateau region. The method comprises two parts of constructing an ecological plunge pool and planting aquatic plants. A pit is constructed at the selected riverbed, stone built dam type pool walls are constructed at the periphery of the pit, and the upstream pool wall is provided with a series of waterfall forming pipes and a fountain forming pipe. The topmost of the upstream pool wall of the ecological plunge pool is a pointed flood diversion or stone diversion dam, and the center of the dam is a hollow waterfall control cavity. After the current enters the waterfall forming pipes, the current is injected into the ecological plunge pool by water outlet holes at different positions in a form of waterfall. The current flowing into the fountain forming pipe enters the pool bottom along the pipe to form fountain. The bottom of the ecological plunge pool has a layer of planting matrix for planting the aquatic plants. Some aquatic animals also can be put into the ecological plunge pool to perch and reproduce. The whole ecological plunge pool forms a balanced and stable ecological system with beautiful landscape so as to purify the water body.

The comprehensive control and treatment method of underground water resource intruded by sea water includes the following steps: surveying the topography and its surface features of control area in overall; finding out the main stream position and direction of alluvial fan of the quaternary system, further finding out the monadnock within nearest distance of left and right banks of main stream position of quaternary system alluvial fan; using connecting line between two monadnocks as central line of grout curtain wall, curtain grouting is started from bedrock and grouting to sea level elevation; setting diversion dam on entrance of river in the control area; setting several sunk well with large gushing water on the main stream position of quaternary system allavial fan at up-stream side of curtain wall.

The invention discloses a common ventilation and drainage tunnel structure for a stope, which relates to the technical field of underground mining. There are several segmented air inlet tunnels distributed parallel to each other, one end of which is provided with an extended and widened section, and the air inlet patio runs through and communicates with each extension. Widened section, extended The widened section includes the widened section and the extended section, and the water guide dam is located in the widened section; the air inlet and drainage roadways are arranged in parallel on one side of the segmented air inlet roadway, one end of which is directly connected with one end of the air inlet patio, and the other end is set The main drainage roadway; both ends of the air guide roadway are respectively connected to the sides of the air inlet and drainage roadway and the air inlet patio; the half wall is set in the air inlet and drainage roadway. This design can not only stabilize the wind in the stope, but also discharge water normally without generating water mist.

The invention discloses a method for reducing and controlling waste pollutants in scattered culture zones of hills. The method includes the following steps: A. constructing a biomass purifying tank; B. constructing an ecological trench wetland system, namely constructing an ecological trench cross section, constructing a water retaining ridge, and configuring ecological trench plants, wherein the ecological trench plant configuration is divided into three sections, namely a front section at the upstream of an ecological trench, a middle section at the middle-upper part of the ecological trench, and a rear section at the middle-lower part of the ecological trench; C. constructing a diversion dam; and D. constructing a tail-end three-level wetland system, including a primary green myriophyllum verticillatum ecological wetland, a secondary economic wetland, and a third ecological fishpond. The method is low in building and running cost and convenient to operate, has a good governance effect, and can effectively reduce and control pollutants such as COD (chemical oxygen demand), nitrogen, phosphor and the like in polluted water. According to the method, culture wastes in a water collecting zone are treated by an ecological trench constructed in a natural drainage ditch and the ecological wetland system constructed at the tail end. The method can be applied to hills in the vast subtropical zone in south of the middle and lower reaches of the Yangtze river region in China, and has certain economic benefits.

A hedging energy dissipation debris flow diversion system, the diversion system is set in the debris flow channel formed between the highlands on both sides, including a diversion dam and a hedge guide device, the diversion dam includes a first dam body arranged in the middle of the debris flow channel, And the tip of the semi-conical shape is facing the direction of the debris flow, thereby forming two first flow channels on both sides. The hedging guide device includes a first arc-shaped guide dam and a second arc-shaped guide dam respectively arranged in front of the flow direction of the two first flow channels. Two arc guide dams. The core of the present invention is the diverter dam and the hedge guide device that cooperate with each other. The diverter dam is used to guide the debris flow into two streams, and the hedge guide device guides and changes the flow direction of the two debris flows, so that the kinetic energy of the two streams can be eliminated after the hedge converges, and then greatly The impact force and destructiveness of debris flow are reduced, and the diversion system has a strong ability to resist geological disasters, even if it is partially damaged, it will not have a great impact on the prevention and control effect.

Disclosed is a multistage self-bursting soil flood diversion dam protected through geosynthetic materials. According to the multistage self-bursting soil flood diversion dam protected through the geosynthetic materials, a slope protection (2) is arranged within the upstream scouring protection range of a soil water passing dam (1), and an automatic water level indicator (3) is arranged on an upstream slope of the soil water passing dam (1); a platform (4) is laid at the upstream end of the soil water passing dam (1), and the weir crest of the soil water passing dam (1) is connected with a trapezoidal weir surface geosynthetic material protection surface (6-1); a downstream slope of the soil water passing dam (1) is connected with a trapezoidal discharge chute geosynthetic material protection surface (6-2); a rope-tied non-woven fabric threading fixing foot (8) is arranged at the bottom of a downstream slope foot of the soil water passing dam (1); and a fixing body I (7-1) is arranged at the bottom of the upstream end of the trapezoidal weir surface geosynthetic material protection surface (6-1), and a fixing body II (7-2) is arranged at the bottom of the downstream end of the trapezoidal weir surface geosynthetic material protection surface (6-1). The multistage self-bursting soil flood diversion dam is used for flood diversion of the soil dam.

The invention discloses a diversion dam guiding strong-washing and strong-flushing closestool. The closestool mainly comprises a closestool body, a water tank, a water falling opening, a water guide pipe, a water distribution dam, washing holes, a panel, a spraying water inlet, a water guide ring, a toilet bowl bottom, a water guide platform, a spraying hole, a sewage discharging inlet, a water storage surface and a spraying pipe. The closestool is mainly characterized in that water flushed out by the water guide pipe is firstly divided into two water flows by the water diversion dam; a plurality of washing holes in the bottom of the water guide ring are dynamically sealed at the first time through the water guide platform in a left-right manner; washing water supply is preferentially ensured; air in cavities of the water guide ring, the water guide pipe and the injection pipe is temporarily compressed; water flow kinetic energy is prevented from being released, high-efficiency transmission of high-water-level water pressure kinetic energy in the water tank to water flow pressure of the washing hole and the spraying hole is achieved, and the problems that in an existing pure gravity replacement closestool, the washing water amount is small, washing and spraying are insufficient, and the comprehensive use performance of the closestool is low are well solved.

The invention discloses a construction teaching model and construction method of a hydropower station. The construction teaching model comprises a water-retaining building, a diversion building and a power generation workshop; and the water-retaining building employs a roller compacted concrete dome dam. Along the axial direction of the dam, the total length of the upstream edge of the dam top is 8.66m, the dam body is provided with a water inlet, and a diversion pipeline used by the water inlet uses a pressure steel pipe. The dynamic construction process including the diversion dam body, the process that water current enters the workshop and detail construction of the workshop is displayed via static profiles, the model is highly visual, students can make operation in certain part, the difficulty in teaching and practice of water conservancy type professions in colleges is overcome, onsite teaching is combined with practice to overcome disadvantages of onsite practice beyond campus, and more importantly, the teaching efficiency is improved, travel time and part of cost are reduced, and the characteristic of occupational education is embodied.

Disclosed are a debris flow diversion dam automatically distributing drainage and silting and a design method thereof. The diversion dam comprises a dam foundation (1) and a dam main body provided on the dam foundation (1); the bottom part of the dam main body is provided with a diversion hole (2) connected to a drainage ditch, the top part of the dam main body is provided with a diversion weir (3) which is connected to a silting field; the diversion weir (3) is located above a side of the diversion hole (2), and the elevation of a top face of the diversion hole (2) is the same as the elevation of a bottom face of the diversion weir (3); and the size of the cross-sectional area of the diversion hole (2) is determined by the projected throughput of the drainage ditch, and the size of the cross-sectional area of the diversion weir (3) is determined by the projected throughput of the silting field. The debris flow diversion dam uses a diversion hole to control the throughput of debris flow entering the drainage ditch, rationally distributing the debris flow to the drainage ditch and the silting field, preventing a higher volume than the projected standard of debris flow from overflowing in the drainage ditch, and also preventing a higher volume than a projected standard of debris flow from entering a main river and creating a landslide dam.

The invention belongs to the technical field of rainwater regulation and storage of sponge cities, and particularly relates to a diversion system of a manual regulation and storage lake of a sponge city, which comprises a water inlet area, a water outlet area, a diversion dam, a water pump water impeller and a submersible pump, and is characterized in that the water inlet area and the water outlet area are respectively arranged at two ends of the manual regulation and storage lake; the water pump water impeller and the submersible pump are respectively installed in the lake and cooperate with each other to further promote water body circulation and adjust the water body flow direction again. The method has the beneficial effects that the water quality and the landscape effect are improved, an original drainage pipeline can be normally used, new rainwater pipelines are avoided, the manufacturing cost is saved, and the method has wide application prospects in spongy transformation in old cities.

The ecological flow guide fender pier structure comprises a fender pier dam and a flow guide dam, the flow guide dam is located on one side of a pier on the channel side, the flow guide dam is linearly arranged in the water flow direction, an acute angle is formed between the flow guide dam and the main flow direction of water flow, and the water flow can be conveniently guided into a channel through the flow guide dam; the fender pier dam is arranged on the downstream side of the diversion dam and located on the upstream of the pier, the upstream end of the fender pier dam is connected with the middle of the diversion dam, and the downstream end of the fender pier dam is located on the side, away from the channel side, of the pier, so that the diversion dam and the fender pier dam form a protection structure on the upstream of the pier, and water flow is prevented from directly impacting the pier. The flow guide fender pier structure has a flow guide function, and can be used for deepening a navigation channel, maintaining the scale of a navigation channel, reducing the influence of a bridge on the navigation channel, improving the surrounding ecological environment and creating a good habitat for river organisms such as fishes.

The present invention relates to a kind of fish life mirror structure in the catchment area impacted by the river flow. A group of diversion dams are built near the entrance of the catchment area. The direction of the dam and the water flow is 30°‑45°. Several set positions on the main dam are separated by a certain distance, and the ladder dams protrude vertically to the side, and the protruding directions of the two adjacent ladder dams are opposite; on the inside of the diversion dam The catchment area is set as a bottom-shaping area, which includes waterways, bays, beaches, reef groups, and aquatic plant belts; the waterways are set between adjacent diversion dams, connected with the entire bay area, and connected with upstream and downstream currents. Connected, the depth is more than 1.5m lower than the water level in dry season. The present invention can effectively change the water flow situation, so that the water catchment area and the river channel can be kept unimpeded; effectively solve the problem of water flow impact in the flood season, and improve the water flow situation; the upper and lower water flow is smooth in the dry season, and the waterway inlet is connected, which is beneficial to the migration and habitat of fish; The arrangement of beaches and aquatic plants is beneficial to fish spawning and growth.

The invention belongs to a water-saving ecological slope protection structure and a construction and water-saving method thereof. The structure comprises left diversion dams and right diversion dams which are distributed at spacing distance and are arranged at intersections of transverse drainage channels and longitudinal drainage channels, wherein the left diversion dams and the right diversion dams are arc-shaped dam bodies; the front ends of the left diversion dams and the right diversion dams are located in the longitudinal drainage channels and divide the inflow cross sections of the longitudinal drainage channels into middle drainage ports, left water-saving channel inlets and right water-saving channel inlets; and the rear ends of the left diversion dams and the right diversion damsare located in the transverse drainage channels of the left sides and right sides of intersections of the drainage channels. The method comprises the step of carrying out alkalization removal treatment on a concrete baffle plate and concrete casting ground. The water-saving ecological slope protection structure can effectively utilize natural water resources to provide an environment suitable for plant growth, and has the advantages of reasonable structural design, simple and practical method, long service life and good stability of slope protection.

The invention relates to a hydraulic trash remover for a bottom grid diversion dam of a power station, comprising a movable grid bar support frame, a guide wheel positioning device, a hydraulic jack, a lateral pulley positioning device, a corridor, a hydraulic jack supporting seat and fixed grid bars, wherein the hydraulic jack and a lateral positioning pulley are installed on both sides of the corridor, and the hydraulic jack is positioned on the hydraulic jack supporting seat fixed on concrete of a dam body; and the fixed grid bars are installed on the same plane of the movable grid bar support frame on the top of the dam body and are fixed on walls on both sides of the dam body, gaps between movable grid bars and the fixed grid bars installed are well adjusted, the guide wheel positioning device is installed on the lateral face of the movable grid bar support frame so as to ensure that the movable grid bar support frame can be leftwards and rightwards positioned, and a hydraulic system in a control room on the dam top is connected with hydraulic pipelines embedded in grooves on both sides of the dam body. As the structure is adopted, by controlling the hydraulic jack, the movable grid bar support frame is operated to move up and down to make reciprocating movement so that silt can be loosened, and the impulsive force of water is utilized for automatically carrying away the silt, thereby achieving the purposes of automatic trash removal and time and labor saving.