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 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 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 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 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.

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 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 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.