64 results about "Flood regulation" patented technology

The invention belongs to the field of flood control safety design of reservoirs, and relates to a method of determining downstream design flood of cascade reservoirs. The method comprises the following steps that by the adoption of the Copula function, multi-dimensional simultaneous distribution of the section flood volume and the regional flood volume of the reservoirs is constructed, the explicit expression of a conditional probability function is deduced, the frequency curve of the conditional probability is dispersed, and according to the principle of probability combination discrete summation, the design value and the corresponding probability of the annular maximum peak discharge of downstream sections are determined after flood regulation is conducted through the cascade reservoirs. The method can overcome the defects of traditional determination technologies of the design flood of the cascade reservoirs, and provides more comprehensive reference information for cascade planning and development of drainage basins.

The invention discloses a non-forecast flood regulation method for a cascade hydropower station based on water level flow. The method comprises the following steps of: 1, measuring an initial water level of a reservoir with a floodometer and determining the capacity of a reservoir to be accumulated according to a preset flood control high water level; 2, calculating the current reservoir flow, and calculating the residual flood volume according to a peak and amount relationship; and 3, maintaining the water storage working conditions when the residual flood volume is smaller than the capacity of the reservoir to be accumulated, controlling the flow through a water level fluctuation method when the residual flood volume is greater than the capacity of the reservoir to be accumulated, and accumulating the reservoir flow to a preset high water level. In the regulation process, the actually measured flood storage flow is the current flood peak flow, if the residual flood volume is smaller than the capacity of the reservoir to be accumulated, the water storage working conditions are maintained, and at the moment, the highest reservoir level can be ensured to be lower than the preset high water level; and when the residual flood volume is greater than the capacity of the reservoir to be accumulated, the flood is controlled through the water level fluctuation method, and the reservoir flow is accumulated to the preset high water level.

The invention provides a tide-sensitive river network water environment treatment method based on an MIKE model, and the method comprises the following steps: step 1, establishing a river network model based on MIKE, and improving the stability and precision of the model through a method of space step length control, terrain recheck and group gate assignment operation through a time sequence; step2, determining a water replenishing and activating scheme; and step 3, determining a water supplementing process and a water supplementing amount. Complex water flow characteristics of a tidal rivernetwork are used; an HD of an MIKE11 model is used; the AD module constructs a one-dimensional hydrodynamic force and water quality model; the model can directly determine the planned flow of the sluice and the pump station and the flow and concentration of a pollution source afflux point; outputting a water level process line of each section of the river and a process line of pollutant concentration; decision bases are provided for implementation and arrangement of water replenishing and flowing water and river regulation projects in a river network area, tidal power and existing sluice dispatching and water replenishing are fully utilized, the project operation cost is low, implementation is facilitated, river surges are connected into a whole, the river surge water environment is improved, and meanwhile flood regulation is facilitated.

The invention relates to an intelligent four-quadrant flood regulation method for middle-sized and small-sized reservoirs. According to the intelligent four-quadrant flood regulation method, the rainfall-runoff relation P+W0-R or W, the peak discharge relation R or W-Qm, the flood regulation relation V-Q, the relation between the total primary flood amount, the rise reservoir capacity and the maximum reservoir water storage W-V<qi>-Vm are drawn in a four-quadrant diagram relating to centering; the runoff depth R or the total primary flood amount W corresponding to the precipitation P is obtained according to the peak discharge relation R or W-Qm curve; the Qm corresponding to the runoff depth R or the total primary flood amount W is obtained according to the peak discharge relation R or W-Qm curve; and the Vm corresponding to the runoff depth R or the total primary flood amount W is obtained according to the relation curve between the total primary flood amount, the rise reservoir capacity and the maximum reservoir water storage W-V<qi>-Vm; and the intersection point of a straight line between the Qm and the Vm and the flood regulation V-Q curve is obtained, and the reservoir capacity V and the spillway discharging capacity Q afteer flood regulation are obtained. According to the intelligent four-quadrant flood regulation method, the relevant curves of the reservoir inflow prediction and reservoir flood routing calculation of the reservoirs are drawn on the diagram, the setting time of a flood regulation scheme can be shortened, and the prediction timeliness of the small-sized reservoirs is effectively improved.

The invention discloses a tailings pond disaster early warning method and device based on heavy rainfall weather forecast, and belongs to the technical field of tailings ponds, and the early warning method comprises the steps: obtaining the weather forecast rainfall of a to-be-early-warned tailings pond before a flood season; correcting the weather forecast rainfall according to the on-site real-time monitored rainfall of the tailings pond to be early warned to obtain corrected forecast rainfall; determining a tailings pond reservoir area flood inflow process line; determining a relation lineof flood regulation reservoir capacity and elevation; determining a relation line between the discharge capacity and the elevation; performing dynamic flood regulation calculation according to the tailings pond area flood inflow process line, the flood regulation reservoir capacity and elevation relation line and the drainage capacity and elevation relation line to obtain the highest pond water level elevation in the flood regulation process; and when the highest pond water level elevation in the flood regulation process is greater than or equal to the pond water level early warning value, giving an alarm. According to the tailing pond disaster early warning method based on heavy rainfall weather forecast, the accurate rainfall forecast value of the tailing pond can be obtained, and heavyrainfall disaster forecast and early warning can be conducted in time in advance.

The invention discloses a flood discharge structure for a red mud filter cake storage yard. The flood discharge structure comprises a flood discharge vertical shaft (1) arranged in the middle of the storage yard, wherein the wall of the flood discharge vertical shaft (1) is provided with a plurality of rows of windows (3); and the bottom of the flood discharge vertical shaft (1) is connected with a flood discharge pipeline (2). The flood discharge structure is characterized by also comprising a flood discharge vertical shaft (1)-centered flood regulation tank (4), wherein the whole flood regulation area is in a column basin shape; and each window (3) is provided with a blocking plate (5). A diluvial area of the storage yard is limited in a small range, so that the decrease speed of dry beach length of the storage yard is reduced, the safe operation time of the storage yard is prolonged, and the effective storage of the storage yard is increased; meanwhile, a novel structure of the windows and the blocking plates thereof is adopted, so that the solidification of red mud nearby the vertical shaft is accelerated, and the safety stability of the storage yard is facilitated.

The invention relates to an earth and rockfill dam group control cascade water release security computing method considering upstream dam bursting flood. The method includes the steps that flood routing of upstream dam failure is computed; routing of upstream dam failure flood on the midstream is computed; the flood regulation process of the midstream is computed; routing of midstream reservoir continuous burst is computed; routing of the dam failure flood in a downstream reservoir is computed; the flood regulation process of a downstream dam is computed; the working condition is determined. By analyzing early warning on the downstream dam when an upstream dam bursts, the capacity of the downstream control dam is emptied in advance, overtopping is avoided, and dam failure is avoided. By analyzing the flood discharge margin, a very flood discharge facility is additionally arranged or the flood discharge margin is increased to further reduce the reservoir water level before the upstream dam failure flood reaches, and the security of the downstream dam is obviously improved.

The invention discloses a weir dam burst mechanism analysis method for drainage channel excavation measures. The method comprises the steps that firstly, existing DB-is analyzed; The IWHR model is improved, and then the accuracy of the analysis method is verified through cases. The method is based on a soil-water coupling mechanism; According to the weir dam burst mechanism analysis method considering drainage channel excavation measures, erosion, breach expansion, hydraulics and reservoir flood regulation models are coupled, the outburst flood peak flow, the overtopping time, the total flooddischarge amount and the risk effect on a downstream cascade reservoir group can be rapidly calculated, and therefore an optimal drainage channel design scheme is obtained.

The invention relates to a coastal ecological buffer zone structure having a compounding effect. The coastal ecological buffer zone structure comprises an herbaceous permeation zone, a shrub and herbaceous plant purifying zone, an arbor-herbaceous plant purifying zone and a reed purifying zone which are sequentially arranged in the runoff direction of farmland, wherein the herbaceous permeation zone comprises a bottom bearing layer, a gravel filling zone, a soil planting zone and a water reserving zone which are sequentially arranged from bottom to top, shrubs and herbaceous plants are plantedin the shrub and herbaceous plant purifying zone, arbors and herbaceous plants are planted in the arbor-herbaceous plant purifying zone, and hygrophytes and herbaceous plants are planted in the reedpurifying zone. Compared with common buffer zones, the coastal ecological buffer zone structure having the compounding effect can achieve remarkable permeation, detention storage and farmland rainwater runoff purification and has the advantages of rainfall flood regulation and storage, water purification, landscaping, biodiversity protection, water and soil conservation, low investment and operation cost and the like.

The invention provides a method for accurately detecting discharge by using opening degree of a sluice radial gate of a hydropower station and belongs to the field of discharge measurement and evaluation of a hydraulic structure. The equipment and method for actually detecting a relation between the opening degree of the radial gate of a discharge structure of a hydropower station and the discharge comprise the following steps: first, determining arranging positions of pressure measuring points, the number of the measuring points and altitude scale of a free water surface according to actual hydraulic structure shape and discharge section flow state; assembling a testing equipment bracket; placing the bracket by using an overhauling gate groove; establishing a real-time measuring point water pressure collecting system according to a pressure sensor, a collector and a signal conversion system, so as to collect and analyze data of the section of the gate groove; and obtaining measuring point flow speed distribution real-time information of the section of the gate groove according to an analysis result of the collected data, so as to obtain accurate data of the opening degree of the radial gate and the discharge. The relation between the opening degree of the radial gate of the discharge structure and the discharge is provided, and an analysis basis is provided for flood regulation and flood discharge decision of flood prevention departments and power plants.

The invention discloses a reservoir flood regulation multi-dimensional uncertainty risk analysis method based on a Bayesian network. The reservoir flood regulation multi-dimensional uncertainty risk analysis method comprises the following steps: identifying risk factors of regulation starting water level uncertainty and flood forecasting uncertainty; carrying out bayesian network structure learning based on an expert experience method; carrying out bayesian network parameter learning to acquire a conditional probability table (CPT) of each node; performing Bayesian network probability reasoning; carrying out risk calculation and analysis. In order to couple the influence of regulation starting uncertainty and reservoir flood forecasting errors on reservoir flood control scheduling risks, areservoir flood control risk analysis model based on the Bayesian network is established, and coordinated conversion of reservoir interest benefits and flood control risks in the flood season can beachieved; the bidirectional reasoning of the Bayesian network can establish a reservoir scheduling risk bidirectional analysis and evaluation mode, and has a good application prospect.

The invention discloses a method for constructing an ecological regulation and storage lake for urban rivers, wherein the ecological regulation and storage lake is mainly used for flood regulation andstorage of urban rivers and purification of river course water seriously polluted by resident living and agriculture. According to the main technical scheme, a regulation and storage lake composite water ecosystem is constructed, wherein the constructing method comprises six sub-projects, the six sub-technologies respectively comprises: basement improvement, submerged plant community construction, fish community construction, macrozoobenthos community construction, micro-ecological purification system construction and system optimization adjustment, wherein the submerged plant community as the primary producer is the core part of the water ecosystem; and at the late stage, the optimization adjustment measures are performed by monitoring and observing the system, such that the regulation and storage lake ecosystem is gradually converted into the stable and natural state, and finally the stable regulation and storage lake water ecosystem is formed so as to achieve the state comprising stable and diversified species community, clear water body and good landscape for a long time.

The invention relates to a hill and mountainous region water resource development and utilization scheme capable of achieving water storage, irrigation (flood regulation) and power generation. The hill and mountainous region water resource development and utilization scheme comprises a floor drain system, a water storage system, an irrigation (flood regulation) system, a water pipelines, dam sluices, a power generation system, a power cable, a communication cable and a master control system. The hill and mountainous region water resource development and utilization scheme has the advantages that the scheme is based on a hill and mountainous region, water is stored in a hill, land occupation is avoided, water resources are efficiently developed and utilized, the scheme has no special requirements on water resource constitution, and corresponding design, construction, regulation and control and maintenance are adopted according to the latitude, geology, terrain, landform, rainfall, waterstorage quantity of the specific hill and mountainous region; the water resources are developed and utilized in terms of space, time, irrigation (flood regulation), water use structure, water supplystructure, power generation and the like, the reserve of underground water resources is increased favorably, reasonable water-resource spatial and temporal distribution is benefited, water pollution treatment level is increased, the water resources can be protected favorably, and the spatial quality of people's life is increased.

The invention relates to an urban reservoir flood control compensation optimization scheduling method, which comprises the following steps of S1, dividing a water collection range of a corresponding interval flood between a reservoir dam site and a cross section according to a regional topography and a pipe network topological structure; S2, calculating the rain purification process of the incoming water in the interval; S3, simulating and calculating a flow time sequence of the control section based on a historical rainfall process of an interval incoming water collection region; S4, calculating a flow unit line of the incoming water in the interval; S5, in real-time scheduling, calculating an interval incoming water flow process according to the rainfall forecasting process and the flowunit line; S6, constructing a reservoir flood control dispatching objective function; S7, calculating the initial value of the drainage flow at the reservoir moment; and S8, according to the flood control dispatching objective function of the reservoir and the initial value of the drainage flow, calculating the control drainage flow of the reservoir based on the control constraint condition. The method can be used for accurately and effectively carrying out flood regulation calculation of reservoir flood control compensation scheduling.

The invention discloses a method for building fill dams in a red mud disposal site through a slurry dry method and a structure of the fill dam. A red mud filter cake filter pressing workshop (1) is arranged outside a dam body of a slurry red mud disposal site primary dam (3) ; before the fill dams (2) are built in the red mud disposal site, a foundation (4) is built on the inner side of the dam body of the primary dam (3) through block stone dumping filling or filter cake dry red mud backfilling at first; the fill dams (2), a dam slope stable safety zone 6 and a dry red mud filter cake stockpiling zone 7 are built through filter cake dry red mud produced by the red mud filter cake filter pressing workshop (1), the red mud surfaces are all inclined to a floor regulation pool (5) in the disposal site, and the gradient i is no less than 1%; and a slurry red mud discharging mode is adopted by other zones of the slurry red mud disposal site except the fill dams (2), the dam slope stable safety zone 6 and the dry red mud filter cake stockpiling zone 7, and the stockpiling elevation of a slurry red mud discharging zone (8) should be always lower than the height of the filter cake dry red mud stockpiling zone 7 and meet the red mud disposal site flood regulation requirements required by related national standards. The problems that fill dams are difficult to build in red mud disposal sites through a slurry dry method, the dam building time is long, water is liable to be accumulated in a dry beach range, and consequently the related national standards and requirements are not met can be effectively solved.

The invention discloses a reservoir area ice dam damming simulation method based on a simplified Saint-Venant equation set. The reservoir area ice dam damming simulation method comprises the steps: S1, determining an ice dam forming period; s2, determining the occurrence position of the ice dam; s3, determining a reservoir capacity curve required by ice dam damming calculation; s4, calculating thewarehousing ice amount and the geometrical morphology; s5, determining a discharge curve required by ice dam damming calculation; for different flow levels, considering the water blocking area of theice dam to obtain the ice-water mixing area under the flow, and back calculating the water level according to the section form to obtain the flow relationship of the water level or the ice level, namely the discharge curve of the section; and S6, performing ice dam flood regulation calculation based on the simplified Saint-Venant equation set. According to the method, under the condition of limited data, the problem that the ice dam occurrence position depends on actual measurement data is solved by utilizing the incidence relation between the reservoir area water level in front of the dam and the reservoir tail ice dam occurrence position and judgment indexes. The section discharge capacity of the head section of the ice dam is analyzed through section hydraulic factors, and the problemof section ice passing capacity determination is solved.

The invention relates to a flood regulation method for improving the tailings pond capacity utilization rate based on a particle swarm optimization algorithm, and belongs to the field of tailings pondengineering. The particle swarm optimization algorithm is matched with specific parameters, so that the search range can be expanded, the particle learning speed is increased, the reservoir capacityutilization rate is increased, and the flood regulation calculation precision is improved; according to the rechecking process provided by the embodiment, a more accurate discharge flow curve is obtained by the algorithm, so that the design of the tailing pond discharge structure is more economical and reasonable; the flood regulation reservoir capacity of the tailings pond is fully utilized, andmore reliable data are provided for operation management of the tailings pond.

The invention discloses a reservoir flood control limit water level dynamic adjustment method based on forecast error override fortification. The method comprises the steps of 1, realizing rainfall forecast grading; 2, determining an override control rainfall threshold; 3, obtaining rainfall forecasting grade information in the next 24 hours and judging whether the rainfall forecasting grade in the next 24 hours is a rainfall forecasting grade of light rain or below; 4, dynamically adjusting reservoir flood control limit water level of the rainfall forecast levels of the light rain and below the light rain; and 5, dynamically adjusting the reservoir flood control limit water level of the moderate rain and precipitation prediction grade above the moderate rain. According to the method, thereservoir is protected according to the condition that the average areal rainfall on the drainage basin is equivalent to the forecast override rainfall; the corresponding safety limit water level is reversely deduced according to the reservoir flood control capacity and the safety discharge control flow, the flood control water level is deduced on the basis of rainfall forecasting, the possible precipitation value range is expanded in an override mode while the forecasting precision is considered, the utilization of flood resources by the reservoir is increased, and the flood regulation risk of the reservoir is reduced.

The invention discloses a forecast scheduling method for reducing reservoir flood regulation starting water level by considering forecast errors, and belongs to the technical field of flood preventionforecast scheduling. The method comprises the following steps: firstly, performing flood forecasting feasibility analysis on a reservoir control basin, and identifying forecasting error distributionby adopting a maximum entropy principle; secondly, formulating a dispatching rule framework for reducing the flood starting water level of the flood rising section by utilizing a pre-discharge thoughtfor the whole dispatching system; optimizing the forecast scheduling framework to obtain a forecast scheduling scheme optimization point set; thirdly, screening out all optimization point sets meeting the upstream and downstream flood control safety under the condition of the maximum forecast error from the forecast scheduling scheme optimization point set; and finally, comprehensively considering forecast errors and different preferences of a decision maker, and evaluating optimal forecast scheduling scheme points by utilizing a binary comparison method and a fuzzy optimization model to obtain a final forecast scheduling scheme. The method is simple and easy to operate, and the flood control benefit of the reservoir and the elasticity of a downstream protection point under the flood action are improved under the condition of keeping the interest benefit.

The invention discloses a hydrological research method of a flood detention area. The water circulation regulation function of the flood detention area in a watershed is analyzed by analyzing and calculating the regulation ability of the flood detention area to surface runoff and the replenishment ability to groundwater. Based on the data of hydrological stations, whether the variation of hydrological annual average runoff is increasing or decreasing is analyzed. The method analyzes whether there is land use change in catchment area and the effect of groundwater level change on wetland vegetation composition and structure, Through the analysis and calculation of flood regulation and storage function and groundwater replenishment amount, the influence on wetland vegetation, wetland soil andwetland aquatic ecosystem and groundwater replenishment function in flood detention area can be analyzed, thus playing an important role in the regulation of surface runoff and groundwater runoff inwatershed.

The invention discloses a method for rectifying and reforming potential safety hazards in the operation period of an upstream type tailing pond. The method comprises the steps that a newly-built accumulation dam body and a percolate collection system are provided, wherein the accumulation dam body is composed of a first-stage stone-heaping dam and other stages of accumulation sub-dams, the first-stage stone-heaping dam is built on an existing initial dam, then the other stages of accumulation sub-dams are sequentially and newly built on the first-stage stone-heaping dam to the rectifying and reforming elevation, slag is heaped from the tops of the other stages of accumulation sub-dams to the tail of the pond according to a certain gradient, and the flood regulation storage capacity meetingthe flood control standard is reserved at the tail of the pond; and the percolate collection system is buried in a slag body in front of the pond and is composed of a longitudinal seepage drainage pipe and a transverse seepage drainage pipe, and the longitudinal seepage drainage pipe and the transverse seepage drainage pipe are arranged in a shape like a Chinese character 'wang' on the plane. Bymeans of the method, the problems that in the operation period of the upstream type tailing pond, slag is heaped from the tail of the pond to the front of the pond in a non-standard manner, the floodregulation storage capacity does not meet the requirement, and the potential safety and environment protection hazards and sustainable development of the slag heaping storage capacity cannot be sufficiently utilized can be effectively solved.

The invention discloses an automatic separating device for fine-sized slime in tailings conveying manifolds and belongs to mine tailings grading and conveying equipment. At least one guiding-out mechanism composed of a door-shaped support and a leading-out pipe is arranged on any tailings conveying manifold, each leading-out pipe is fixed on the corresponding door-shaped support and communicated with the corresponding tailings conveying manifold and a fine grain conveying pipe in a connected manner respectively, a proportion flow limiting mechanism is arranged in a horizontal pipe section at the tail of each leading-out pipe, and the middle of each fine grain conveying pipe is supported by multiple supporting frames while the head of the same extends into a mine pit. Each leading-out pipe composed of a vertical pipe, a first bypass inclined pipe, a second bypass inclined pipe and a connecting elbow is adopted, and pipe-diameter ratio and tailings slurry flow speed are designed reasonably, so that separating of fine-sized slime in the tailings conveying manifold can be realized without newly-added power, energy resources are saved, the fine-sized slime entering a tailings pond is reduced, grade matching of tailings entering the tailings pond is improved, gradient of a dry beach at a flood regulation section is increased, and safety superelevation and flood regulation height floor prevention indicators of the tailings pond are enabled to meet safety requirements.

The invention relates to the flood drainage field of dry-type tailing reservoirs, in particular to a flood drainage system suitable for a dry-type tailing reservoir using an upstream method. The flooddrainage system comprises a flood drainage vertical shaft, a flood regulation water collection pond, water return holes and an inverted filter layer. The concrete structure of the flood drainage system is characterized in that the flood regulation water collection pond is built around the flood drainage vertical shaft; the flood drainage vertical shaft is in the up-down combination structure composed of a shaft body with a metal structure and a reinforced concrete shaft seat; the water return holes are arranged in the shaft body; and the inverted filter layer is installed around the shaft body. The invention is especially adapted to the flood drainage system suitable for the dry-type tailing reservoir using the upstream method. Therefore, the flood regulation water collection pond collects flood and rapidly increases the depth of flood at the flood drainage vertical shaft. In this sense, the flood drainage vertical shaft quickly enters the state of weir flow at the shaft mouth. As a result, a flood drainage capability is increased, flood drainage time is reduced and all floods inside the tailing reservoir are drained out. Therefore, flood infiltration of the reservoir is reduced.Weak intercalated layers of saturated tailings or unstable phreatic lines due to great infiltration depth of floods are avoided.