29results about How to "Prevent waterlogging" patented technology

The invention discloses a dynamic control method and platform for intelligent intercepting and discharging equipment, and relates to the technical field of intercepting and discharging control, and the method comprises the steps: analyzing drainage parameters of multi-stage drainage equipment, and constructing a multi-stage drainage network; connecting a multi-source acquisition channel; based on the multi-stage drainage network, drainage demand prediction is carried out through multi-source collection data, and predicted drainage information is obtained; according to the prediction information, self-adaptive demand parameters are extracted through self-adaptive index parameters; taking the self-adaptive demand parameter as an index, inputting the self-adaptive search model to carry out control parameter search, and obtaining a dynamic control parameter; and utilizing the dynamic control parameters to carry out closure and drainage control on the multi-stage drainage equipment. The technical problems that a closure drainage system is poor in adaptability to complex environment changes and inaccurate in drainage demand prediction are solved, and the technical effects that drainage control is dynamically conducted according to weather changes, drainage demand prediction accuracy is improved, and waterlogging of farmland is avoided are achieved.

The invention discloses a rainwater collection device based on a sponge city and a collection method thereof, and particularly relates to the technical field of rainwater collection, the rainwater collection device comprises a reservoir and a precipitation cylinder, the reservoir is internally provided with an inspection well and a recycling well, the bottom of the precipitation cylinder is provided with a first pollution discharge hole, and the first pollution discharge hole is internally provided with a first sealing element; the first sealing piece can change the sealing state according to the amount of accumulated water in the precipitation barrel, a stirring piece is arranged at the inner bottom of the precipitation barrel, and the stirring piece can stir sediment at the first pollution discharge hole when the first pollution discharge hole is opened; the sewage draining exit is opened in advance according to the precipitation amount and the water storage amount in the water storage pool, meanwhile, accumulated water in the water storage pool is kept at a certain water level, the water storage pool has a certain buffer space, and therefore it is guaranteed that when the precipitation amount is large due to rainstorm or long-time raining, the water storage pool can not be blocked; the rainwater collecting device can quickly discharge flood to prevent urban waterlogging.

The invention discloses a drought-resisting, waterlogging-preventing and fertility-increasing crop diversity utilization system for organic sorghum in mountainous regions and an establishment method thereof, and belongs to the technical field of comprehensive utilization of rainwater. The system comprises a water guide groove, the water guide groove comprises a vertical water guide groove and an equal-height water guide groove, and the vertical water guide groove is connected with the equal-height water guide groove; the filter tank is connected with the vertical water chute; the reservoir is connected with the filter tank; the water tank is connected with the reservoir and used for controlling the water level of the reservoir; plants are planted above the water guide grooves; rainwater and surface runoff flow into the equal-height water guide groove, flow into the filter tank through the vertical water guide groove, flow into the reservoir to be stored after being filtered by the filter tank, and nutrients generated by plants flow into the reservoir along with water flow. The problems that the slope farmland field rainwater resource utilization rate is low, and the waterlogging-preventing and drought-resisting efficiency is low are solved. Waterlogging of crops caused by concentrated rainfall in the mountainous region is reduced, water resources in the mountainous region are reasonably utilized, the plants and the crops are intercropped, and diversity planting of the crops and integration of water and fertilizer are achieved.

The invention discloses a control method of a drainage system. The method comprises the following steps: collecting a historical meteorological data set of a target area where power equipment is located in a historical period of time; predicting the plurality of historical meteorological data sets to obtain a predicted meteorological data set of the target area in a future time period; based on the predicted meteorological data set, determining a risk assessment result of the target area, the risk assessment result being used for representing a probability of occurrence of a risk event associated with the predicted meteorological data set in the local area; based on the risk assessment result, determining control data of a drainage system in the target area; and controlling a drainage system to drain accumulated water in the target area according to the control data. The technical problem that the efficiency of processing accumulated water in the transformer substation is low is solved.

The utility model discloses a self-adhesive agricultural mulching film, which relates to the technical field of agricultural mulching films, and comprises a middle film, two sides of the middle film are fixedly connected with side films, the mulching film is in cohesive connection with ground soil through a cohesive layer at the bottom of a cohesive weed suppression layer, and the design of ensuring the cohesive gradient ensures that the cohesive of a central area is larger. After the sticky protrusions are combined with the soil, the laying efficiency of workers is improved, fixing through U-shaped nails is not needed, physical loss is reduced, the labor intensity of the workers is reduced, the sticky strength of the edges is small, film uncovering is facilitated, the film uncovering speed is increased, and the waste film recycling speed is increased. A plurality of groups of dividing holes are arranged in sequence to realize temperature adjustment and promote plant growth, the directional flow guide grooves adopt the design of V-shaped grooves, namely the design of inclination angles, so that the rainwater diversion efficiency is improved, drainage can be helped, and waterlogging damage to roots can be effectively prevented; and the problem that the mulching film is lifted due to overlarge wind force is effectively prevented.

The invention discloses a light and simple mechanical potato planting device and method in the technical field of agricultural planting, and the method comprises the following steps: 1, selecting and preparing a land, and carrying out deep ploughing and fine soil preparation by adopting a rotary cultivator 3-4 days before sowing, with the rotary tillage depth being 25-30 cm; 2, seed potatoes are prepared, and the cut seed potatoes are subjected to seed dressing treatment after being diced; 3, preparing a base fertilizer containing phoxim for preventing and treating underground pests; 4, a light and simple potato planting device is used for carrying out compartment opening and ridging, the sowing depth is accurately controlled, and when base fertilizer is applied, compound fertilizer is applied at intervals to seed potatoes, so that bud burning and seed rotting are avoided; 5, medium-term management, wherein 5-7.5 kg of urea is applied per mu according to the seedling condition for seedling lifting. The potato ridger is efficient and practical, manpower consumption of potato sowing, fertilizing and ridging is reduced through mechanical application, the structure of the ridging shovel is optimized, the planting efficiency and quality are improved, potato planting is simplified and efficient, labor intensity and planting cost are reduced, and the planting efficiency and quality are improved.

The invention discloses a seedling culture device for production, processing and planting of astragalus membranaceus, and belongs to the technical field of traditional Chinese medicine seedling culture, the seedling culture device comprises a shell and a liquid collecting tank, the liquid collecting tank is arranged at the bottom of the inner side of the shell, a separation part is installed above the liquid collecting tank and used for separating a seedling culture tank, and a magnetic attraction part is arranged on the left side of the seedling culture tank; a movable door is installed on the side portion of the shell, a water outlet shell is arranged on the top of the interior of the shell, a cam and a lighting component are installed on the water outlet shell, and a shifting mechanism is installed on one side of the liquid collecting tank. Through the design of the movable door and the partition part of the shell, inspection, maintenance and adjustment of the interior of the device become more convenient. By adjusting the separation part and the magnetic attraction part, the environment condition can be flexibly adjusted according to the growth requirements of different plants. The drainage holes in the seedling raising grooves can effectively drain redundant water, water accumulation is avoided, the humidity balance of soil and the environment is kept, the risk of disease occurrence is reduced, and healthy growth of plants is facilitated.

This utility model discloses a sunken green space soil aeration and water replenishment device for sponge cities, relating to the field of sunken green space technology. It aims to solve the technical problem of not being able to store rainwater. The device includes a sunken green space unit and a drainage system inside the unit. The drainage system includes a rain-collecting pipe and a venting mechanism on the outside of the pipe. The venting mechanism includes several vents. The inner wall of the rain-collecting pipe is provided with a partition mechanism. The support assembly includes an elastic plate and a sealing plate. The drainage device's interior is formed by the partition mechanism, creating vertically distributed storage and drainage chambers. This utility model has the advantages of using the partition mechanism to form storage chambers for temporary rainwater storage, preventing direct loss of rainwater during short-term heavy rainfall. The vents in the rain-collecting pipe allow rainwater to slowly seep into the planting soil layer, continuously replenishing water to ensure the plants' water absorption. It can adapt to different rainfall intensities and improve rainwater utilization efficiency.

This invention discloses a riverbank protection device and method, specifically relating to the field of riverbank protection technology. It includes a riverbank protection body, a planting area, and an ecological flow guiding component. The ecological flow guiding component comprises multiple alternately arranged flow guiding elements and ecological frames. Each flow guiding element has a water storage tank inside, which provides moisture to the soil within the ecological frames and planting area on both sides of the flow guiding element. The flow guiding element also includes a flow guiding channel located at the upper end of the water storage tank. The flow guiding element can guide the water flowing into it according to the water volume stored in the water storage tank. By incorporating a water storage tank and a flow guiding channel within the flow guiding component, this invention can collect and store rainfall runoff during non-flood seasons. During flood seasons, when water levels are too high, it can automatically guide excess water to downstream areas or the river channel, preventing excessive accumulation in the water storage tank and thus avoiding additional pressure on the riverbank. The water stored in the water storage tank can provide a continuous water supply to the slope protection plants during drought periods.

The utility model discloses a kind of sponge city efficient permeation greenbelt planting structures, it includes: green grass layer, artificial backfill nutrient soil layer, non-woven geotextile, water-accumulating layer and original soil layer, water-accumulating layer, non-woven geotextile, artificial backfill nutrient soil layer and green grass layer are sequentially laid from bottom to top in the upper of original soil layer, first drainage pipeline is provided in original soil layer, a plurality of rootlet pipes are provided on first drainage pipeline, a plurality of rootlet pipes are arranged along the direction of first drainage pipeline, one end of rootlet pipe extends into water-accumulating layer, a plurality of first through holes are provided on rootlet pipe, overflow pipe is provided on first drainage pipeline, overflow pipe extends to green grass layer upwards, overflow hole is provided on first drainage pipeline, overflow hole bottom is connected with second drainage pipeline, second drainage pipeline is connected with water-collecting well, and sealing assembly is provided at overflow hole. The utility model can solve the problem of poor permeability of urban green space compared with prior art.

The utility model discloses a waterlogging prevention type edible mushroom culture room which comprises a culture room body, a control box and a three-dimensional frame, a plurality of culture grooves are formed in the three-dimensional frame, a plurality of flood drainage grooves are formed in the bottoms of the culture grooves, water seepage holes are formed in the bottoms of the flood drainage grooves, drainage grooves are formed in the bottoms of the flood drainage grooves, lifting mechanisms are arranged in the drainage grooves, and the lifting mechanisms are connected with the control box. A blocking plate is arranged on the top of the lifting mechanism, and a humidity sensor is arranged in the flood drainage groove. The utility model relates to a waterlogging prevention type edible mushroom culture room, which belongs to the technical field of edible mushroom culture equipment, and is characterized in that a controller in a control box sends out a signal according to detection data of a humidity sensor to control a lifting mechanism to start, so that water in a waterlogging drainage groove can seep downwards from a water seepage hole, and the water content of soil is reduced; the waterlogging death of the roots of the edible mushrooms is prevented.

The utility model relates to the technical field of kumquat planting, in particular to a multifunctional shed for kumquat planting. The multifunctional shed comprises stand columns, supporting columns, side columns, pressing rods, an insect-proof film and a waterproof film, wherein the insect-proof film and the waterproof film cover a shed frame. The insect-proof film effectively prevents insect pests, the waterproof film has a rainproof function, fruit cracking is reduced, and meanwhile the waterproof film can be closed under the high-temperature condition to reduce sunscald; in addition, the shed frame is specially provided with a drainage channel, rainwater drainage is optimized, and the roots are prevented from being waterlogged; the supporting columns are provided with sliding rails and sliding blocks and used for adjusting the coverage area of the waterproof film so as to adapt to different weather conditions. The design of the stand columns considers the stability of the structure and does not interfere with planting and construction operation. The utility model aims to provide a stable and adjustable kumquat planting environment, and aims to improve the environmental conditions of kumquat planting, especially for the variety of crisp and honey kumquats which are susceptible to sunburn and fruit cracking.

The utility model belongs to farmland drainage technical field, concretely relates to a overflow drainage channel of high standard farmland, including the drainage channel of setting between plots, one side inner wall fixed mounting of drainage channel has first rotation axis, the other side inner wall swing joint of drainage channel has second rotation axis, and second rotation axis penetrates the other side wall of drainage channel, and it is installed between first rotation axis and second rotation axis to have cylinder, one side wall of cylinder is set on first rotation axis, and the other side wall of cylinder is fixedly connected with second rotation axis, and a plurality of filter devices are equipped in cylinder, and a plurality of impurity removal subassemblies are installed on the surface of cylinder. The utility model can quickly, safely drain excess water in field, prevent farmland waterlogging, ensure that high standard farmland can realize drought and flood and ensure yield, and high yield and stable yield.

The invention belongs to the technical field of municipal engineering, and particularly relates to an anti-blocking gutter inlet for municipal engineering, the interior of a vertical shaft is divided into a water inlet chamber and a dirt removal chamber through a partition plate, a water inlet wellhead and a dirt removal wellhead are arranged at the upper end of the vertical shaft, and a pneumatic telescopic rod for rotating a first well lid is arranged in the water inlet wellhead; the water inlet chamber is internally provided with a self-power-generating crushing mechanism for cutting up plants and plastic bags in rainwater; the self-power-generating crushing mechanism can conveniently cut up plants and packaging bags which enter along with rainwater from the opening, facing the road, of the water inlet opening, so that the situation that the rainwater inlet is blocked after the plants and the packaging bags are mixed is avoided, and waterlogging of a city due to blockage of the rainwater inlet is avoided; therefore, the pneumatic telescopic rod can drive the first well lid to turn upwards when stretching out and drawing back, blockage caused by the small water inlet of the rainstorm water inlet well mouth is avoided, and the flood drainage capacity of the gutter inlet is improved.

The utility model discloses a control system for realizing drainage by tidal liquid level difference, including storage and discharge control room, the inside one side of storage and discharge control room is provided with filter assembly, and one end of filter assembly is connected with control component no.

The invention discloses a hormone combination for improving the waterlogging resistance of rapeseed, wherein the hormone combination is prepared by mixing 1mmol salicylic acid and 16mL / L indolebutyric acid. The beneficial effect of the invention is that by using a hormone combination of salicylic acid and indolebutyric acid of a certain concentration on rapeseed before and after waterlogging, it is possible to effectively prevent rapeseed from waterlogging disasters and achieve recovery after waterlogging disasters.

The utility model relates to a diversion type drainage structure based on municipal drainage, which comprises a main pipe shell which is communicated with a ground drainage flow channel and an underground sewage flow channel to directionally convey rainwater, and the side wall surface of the main pipe shell is embedded with a diversion filtering assembly which can continuously filter and divert the rainwater conveyed by a shell cavity of the main pipe shell. A residue collecting and water filtering assembly capable of collecting impurities transferred by the separating and filtering assembly and filtering rainwater for the second time is further arranged on the side, away from the main pipe shell, of the separating and filtering assembly; an overflow sedimentation assembly is further arranged at the axial lower end of the main pipe shell; and the water slurry filter wheel positioned by the branch filter shell is partially placed into the shell cavity of the main shell by the branch filter assembly according to a mode that the shell cavity of the main shell can be separated to continuously filter rainwater. According to the utility model, rainwater can be continuously shunted and filtered to improve the purity of the rainwater and ensure the smoothness of the drainage system so as to continuously drain water at the same time.

This utility model discloses a rice cultivation pot based on capillary self-watering and root oxygenation, belonging to the technical field of agricultural crop cultivation equipment. It includes a pot body with an open top; a partition is installed in the inner cavity of the pot body; the partition is placed horizontally and divides the pot body into an upper cultivation area for placing seedling substrate and cultivating seedlings, and a lower water storage area for storing liquid fertilizer and water; several capillary fiber ropes are installed on the partition; one end of each capillary fiber rope is placed at the bottom of the water storage area, and the other end extends through the partition into the seedling substrate in the cultivation area; the capillary fiber ropes can transport water from the water storage area to the seedling substrate in the cultivation area through capillary action; several ventilation holes are opened on the side wall of the pot body above the highest water storage height of the water storage area; effectively solving the problems of uneven water management, root hypoxia, and low fertilizer utilization rate existing in traditional rice seedling cultivation devices.

The invention discloses a mining backfill material preparation process based on tailings sand recovery and reuse, which is applied to the field of environmental protection technology. The process reduces the use of other materials and additives and uses tailings sand waste as the main raw material to prepare the backfill material, which can not only effectively save costs, but also effectively avoid the precipitation of harmful substances and secondary pollution. By adding a shaped internal reinforcement keel as the skeleton of the backfill material, the strength of the backfill material is effectively improved, and the backfill material can be prevented from being broken and collapsed during transportation and backfilling. The internal reinforcement net is used to adsorb heavy metal ions in the backfill material to prevent the heavy metal ions from infiltrating into the groundwater layer. The internal reinforcement column is also used to help the infiltration of rainwater, effectively preventing the occurrence of waterlogging in the reclaimed backfill pit, and the internal reinforcement column can filter the infiltrating rainwater, further effectively preventing the harmful substances from infiltrating into the groundwater layer, thereby achieving the increase and purification of the strength of the backfill material and effectively preventing secondary pollution.

The invention relates to a farmland water conservancy circulation irrigation and drainage facility which comprises a water well and a controller and further comprises an underground pipe network and a plurality of irrigation row piles, a water pump electrically connected with the controller is connected between the water well and the underground pipe network, and the underground pipe network is buried below a farmland cultivation layer. The irrigation and drainage pile comprises an irrigation pile and a drainage pile, the lower ends of the side walls of the irrigation pile and the drainage pile are communicated with each other, an electric control valve electrically connected with the controller is arranged between the irrigation pile and the drainage pile, the lower end of the irrigation pile is communicated with an underground pipe network, the upper end of the irrigation pile extends to the position above a farmland cultivation layer, and the upper end of the drainage pile is located at the ground surface position; according to the system, surface water and rainfall are converged to the water well, waterlogging is prevented, a flocculating agent is added into the water body to purify the water body, irrigation water is formed after purification, adverse effects of impurities such as suspended solids, particles and microorganisms in the water on crops are avoided, and growth of the crops is facilitated.

The invention belongs to the technical field of urban water seepage and drainage, and particularly relates to a sponge city seepage and drainage structure and a sponge city water circulation.The sponge city seepage and drainage structure comprises a low-position main drainage pipe located at the tail end of a drainage system, the water outlet end of the low-position main drainage pipe communicates with a drainage elbow through a valve, and the drainage elbow is used for centralized drainage of water; the lower end of the main confluence pipe is communicated with the low-position main drainage pipe, and the main confluence pipe is used for collecting water and converging the water into the low-position main drainage pipe; the high end of the converging main pipe is communicated with an exhaust part; the water outlet end of the siphon water storage and drainage system is arranged on one side of the confluence main pipe or the low-position main drainage pipe in a communicating mode, the water inlet end of the siphon water storage and drainage system is communicated with a siphon drainage device, and the siphon drainage device is arranged on the road surface and used for collecting accumulated water on the road.

The utility model discloses a quartz sand water permeable brick, and relates to the technical field of water permeable bricks. A water storage cavity structure is arranged in the brick body, and the water storage cavity structure is used for storing water in rainy days and reducing the surface temperature by utilizing water evaporation; the water storage cavity structure comprises a water storage layer fixed to the brick body and a water storage tank formed in the upper surface of the water storage layer, and the height of the water storage tank is gradually increased from inside to outside. And the water permeable assembly is arranged in the middle of the brick body and used for water permeation of the brick body and water storage of the water storage cavity structure. The water storage cavity structure is arranged in the brick body, on one hand, the peak flow of surface runoff during rainstorm can be reduced by absorbing rainwater and temporarily storing the rainwater, and on the other hand, the stored rainwater can absorb heat through evaporation when the surface temperature is high, the surface and surrounding environment temperature is reduced, and the urban heat island effect is relieved.

The present invention relates to integrated equipment for processing and utilizing rainwater resources, and to the field of rainwater resource utilization. The integrated equipment for processing and utilizing rainwater resources includes a rectangular water collection chamber, a guide rod assembly fixed at the four corners of the water collection chamber, and two pressure plates. The inner cavity of the water collection chamber forms a flood storage channel, and the opposite ends of the water collection chamber are respectively disconnected to form a water inlet and a water outlet, thereby dividing the water collection chamber into two parts. The two pressure plates are respectively installed above the two parts of the water collection chamber, and the opposite ends of each pressure plate are respectively installed on the corresponding guide rod assembly. The inner side of each part of the water collection chamber is convexly provided with an inner retaining wall, and a row of anchor plates for fixing it to the ground are provided on the inner retaining wall. The present invention has the function of collecting rainwater and the function of discharging rainwater, and has practical promotion significance for the cultivation of high-priced green plants.

The present invention discloses a method for determining the drainage flow of a drainage pump station, comprising the following steps: step 1, confirming the flow process boundary of the upstream of the flooded area during the flood and the water level process boundary of the downstream of the flooded area during the flood; step 2, determining the starting water level value of the flooded area; calculating the corresponding channel flow rate under different inland river water levels in the flooded area; step 3, selecting a number of drainage flow values, and calculating the inland river water level-inland river volume relationship curve under different pump discharge flow rates; step 4, obtaining the highest inland river water level corresponding to each drainage flow value; step 5, comprehensively considering and selecting the best solution, the pump discharge flow in the solution is the drainage flow value of the drainage pump station. The present invention proposes an efficient and simple pump station scale design method, which can avoid the phenomenon that the upstream flooded area occurs waterlogging, while the drainage pump station downstream of the flooded area cannot operate at full load during the pump station design stage.

The invention relates to the technical field of seedling cultivation, and particularly discloses a multifunctional seedling raising bed which comprises a seedling raising frame which comprises a bed frame and supporting rods, and the supporting rods are symmetrically fixed to the two side faces of the bed frame; the seedling raising plate is placed on the upper surface of the bed frame and used for planting seedlings; the settling pond is arranged on one side of the seedling raising frame; by arranging the seedling raising frame, the seedling raising plate, the sedimentation tank and the reservoir, when seedlings are cultivated, the interior of the seedling raising plate is watered through the reservoir, excessive water flows into the sedimentation tank after the seedlings are watered, and flows back into the reservoir from the sedimentation tank, so that circular flow of water is realized, and the effects of preventing waterlogging and preventing dead seedlings due to water shortage are achieved; compared with the prior art, full utilization of chemical agents is guaranteed, meanwhile, the problem of environmental pollution caused by discharging of the chemical agents can be avoided, in addition, due to the fact that water is not discharged, the used seedbed matrix can be fully recycled, and the problem that the seedbed matrix cannot be reused is solved.

This invention discloses a permeable ecological dam, a farmland irrigation system, and a method for regulating water levels in ditches. The permeable ecological dam includes multiple water-retaining dam segments arranged within the ditch, with the top height of the upstream water-retaining dam segment higher than the top height of the adjacent downstream water-retaining dam segment. Permeable dam segments are arranged between adjacent water-retaining dam segments, with the top height of the permeable dam segments falling within the range of the top heights of the adjacent water-retaining dam segments. Plants are grown on the top of the permeable dam segments. Multiple pipes are buried from bottom to top within the permeable ecological dam, with the upstream end of each pipe open for inserting a plug. Multiple permeable holes are provided on the pipes at the locations of each permeable dam segment, allowing water entering from the upstream of the ditch to pass through and enter the corresponding permeable dam segment. The water entering the permeable dam segment overflows to the downstream of the ditch. This invention can regulate the water level in the ditch to achieve multi-stage water level control and realize multi-stage permeability.

The utility model discloses a rainwater diversion drainage awning relates to awning technical field, including awning main part and drainage strip, the inside lower extreme of awning main part is connected with the installation ring, and the inside connection of installation ring has the windproof rope main part, the inside both sides of awning main part are connected with the support rod, and the lower middle part of awning main part is provided with counterweight pedestal, and the upper middle part of counterweight pedestal is installed with telescopic adjusting lever, the outside lower extreme of telescopic adjusting lever is installed with the support stabilizing block simultaneously, the outside middle end of telescopic adjusting lever is connected with the fastening adjusting part, the outside of awning main part is additionally provided with drainage strip, and the inside lower extreme of awning main part is provided with black glue coating, and the upper end of black glue coating is provided with nylon layer, and the upper end of nylon layer is provided with polyester base layer. This rainwater diversion drainage awning can guide rainwater through various ways, avoid the accumulation of rainwater in the middle of awning, improve the overall practicality and use efficiency of drainage awning.

The utility model relates to the technical field of ecological rainwater gutters, in particular to an ecological rainwater gutter structure based on architectural design. Comprising a rain gutter body and a mounting transverse plate, a supporting plate, a supporting net plate, a gravel layer, a fine sand layer and a planting soil layer are arranged in the rain gutter body, the mounting transverse plate is mounted above the rain gutter body, a drainage cover plate and a water inlet cover are placed above the mounting transverse plate, and the drainage cover plate is filled with a filling layer; inserting cross rods are symmetrically installed below the drainage cover plate, the outer sides of the inserting cross rods are sleeved with reset springs, supporting blocks are installed at the bottoms of the inserting cross rods and the bottoms of the reset springs, and rectangular floating plates are installed on the inner sides of the supporting blocks. When the top of the drainage channel or the rain gutter body is filled with rainwater in heavy rain, the drainage cover plate and the rectangular floating plate move upwards under the action of buoyancy, the bottom of the drainage cover plate is separated from the mounting transverse plate, the efficiency and effect of rainwater entering the drainage channel are improved, rainwater drainage can be guaranteed in the heavy rain environment, and waterlogging is avoided.

This invention discloses a method for using a mobile steel dam, comprising a pair of steel dam lifting guide rails and a mobile steel dam body. The mobile steel dam body includes a pontoon and a water injection / drainage system. The steps for closing the dam are as follows: A1. Move the mobile steel dam body to a position matching the steel dam lifting guide rails and moor it to a mooring bollard using nylon ropes or steel wire ropes; A2. Install lifting limit blocks on the pontoon, and connect each lifting limit block to the corresponding steel dam lifting guide rail to form a sliding pair, so that the pontoon can only move up and down along the length direction of the steel dam lifting guide rail; A3. Inject water into the pontoon through the water injection / drainage system, causing the pontoon to sink to the bottom of the river or waterway along the length direction of the steel dam lifting guide rail, thus completing the dam closure; the steps for opening the dam are the reverse of the dam closure steps. The application of this invention can solve problems such as backflow of water, wind and wave impact, ship navigation safety, and flooding in the surrounding area during flood season and strong winds / typhoons.