914 results about "Ponding" patented technology

A system for identifying ponding water located on a field from image data is described. In an approach, an image of an agricultural field is analyzed using a classifier that has been trained based on the spectral bands of labeled image pixels to identify a probability for each pixel within the image that the pixel corresponds to water. A flow simulation is performed to determine regions of the field that are likely to pool water after rainfall based on precipitation data, elevation data, and soil property data of the field. A graph of vertices representing the pixels and edges representing connections between neighboring pixels is generated. The probability of each pixel within the graph being ponding water is set based on the probability pixel being water, the likelihood that water will pool in the area represented by the pixel, the probability of neighboring pixels being ponding water, and a cropland mask that identifies which pixels correspond to cropland. A class for each pixel is then determined that maximizes the joint probability over the graph.

The invention relates to a tunnel lining self waterproof drainage system, which comprises a surrounding rock bearing arch, a cast-in-place cement main waterproof layer, a pre-cast cement arch sheet layer and longitudinal drainage channels. Arch sheet layer construction gaps and cast-in-place cement main waterproof layer construction gaps are interlaced. The tunnel lining self waterproof drainage system is characterized in that movable drainage grooves are fixedly arranged below the pre-cast cement arch sheet layer of centralized bursting water seepage points of loose surrounding rocks, and form arch sheet drainage spaces with an inwards concave surface of the pre-cast cement arch sheet layer, the parallel drainage spaces distributed along the section of a tunnel form a movable drainage channel, the longitudinal drainage channels are communicated and are arranged on two sides of the movable drainage channel and the pavement of the tunnel, pre-embedded water guiding pipes are arranged at the centralized bursting water seepage points, a water outlet end of each pre-embedded water guiding pipe is arranged on the inwards concave surface of the pre-cast cement arch sheet layer, and pre-embedded grouting pipes are arranged outside the pre-embedded water guiding pipes. The invention completely solves stubborn problems of the tunnel on cracking, seeping, frost heaving, ponding or freezing and the like on the premise of not arranging an interlayer waterproof layer and a hidden seepage water blind pipe drainage system, and the tunnel lining self waterproof drainage system disclosed by the invention has a simple structure and is convenient to construct.

The invention relates to a cement concrete permeable brick, a cement concrete permeable road and production methods thereof. At present, most of urban construction adopting the rigid hardened ground has the problems of dust blowing at a fine day, water accumulation and impermeable ground at a rainy day, no groundwater level supplement, no relief of urban heat island effect, and the like. The invention aims to develop a cement concrete permeable brick, a cement concrete permeable road and production methods thereof. The cement concrete permeable brick is formed by pressing and molding a base material layer and a surface material layer, and both the base material layer and the surface material layer contain cement, sand, stone, water adsorbing resin, asphalt powder, diffusant and a water reducing agent. The production method of the permeable brick is realized by molding the permeable brick by a computer full-automatic building block forming machine; and the production method of the cement concrete permeable road is realized by directly pressing the cement concrete permeable road through a road roller. The invention can achieve the aims of water adsorption, water retention, permeability and practicability, can be widely used for a highway, an airport runway, a roadway, a footway, a square, garden construction, and the like and solve the problem of road icing.

An erosion control system and method wherein a fabric filter bag is embedded with and/or filled with a flocculating polymer and is positioned on a sloping soil surface to dam and pond water flowing thereacross for settling of the particles in the water, and as the ponding water seeps into the bag the colloidal particles will be filtered or agglomerated for settling. The water then passes through and out of the bag and is further subjected to agglomeration and filtering by a skirt of filter material also impregnated with flocculating polymer, said skirt being anchored to the bag or stacked to maintain the position adjacent and downslope from the bag.

The invention relates to the field of hydrologic calculations, and more specifically, to a sponge city hydrologic calculation method. The method includes the steps of S1, collecting rainfall-related basic data within a set time limit of a study region; S2, combined with the collected data, constructing a SWMM model suitable for the study region; S3, constructing different rainfall scenarios, combined with the SWMM drainage model, analyzing response characteristics of a drainage system in the region before and after the regulation and control via LID measures under the different rainfall scenarios, and comparing regulation and control effects of the LID measures; and S4, establishing a regional rainfall flood characteristic assessment system to explore spatial and temporal characteristics of a rainfall flood before and after the regulation and control via the LID measures under the different rainfall scenarios. The invention provides the sponge city hydrologic calculation method, whichconstructs the regional drainage model, simulates the peak runoff, drainage pipe network drainage pressure, water accumulation time and water accumulation amount in a sub catchment region before and after the regulation and control via the LID measures in the region under various extreme rainfall scenarios, is conducive to grasping the regulation and control effects of the LID measures on the regional rainfall flood and facilitates the setting of the LID measures in the construction of sponge cities.

The invention relates to a filling reclamation method for reclaiming coal mining subsidence lands by Yellow River sediment and belongs to the technical field of mine environment protection. The filling reclamation method includes: confirming trends and sizes of Yellow River sediment filling strips according to the sizes and the shapes of a subsided basin to be filled; draining accumulated water in the subsidence land via existing drainage ditches around the subsidence land, and building a field path and drainage ditches along the vertical filling trend in the central area of the subsidence land; confirming the soil stripping depth of every strip according to the sediment depth, the available soil depth and reclamation elevation of every strip to be filled, stripping surface soil from subsoil in a strip-separated and layered stripping manner, and piling the surface soil and the subsoil on two sides of every strip; filling along a direction from two ends of the strips perpendicular to the central drainage ditches to the drainage ditches, covering the strips by the subsoil and the surface coil sequentially in a reasonable thickness after drainage consolidation of the filled sediment, and finally leveling the land to form a reconstructed soil profile. The filling reclamation method provides technical supports for filling reclamation of the coal mining subsidence lands by the Yellow River sediment.

The invention provides an urban accumulated water prediction and safety early warning system based on a flood drainage model. The urban accumulated water prediction and safety early warning system combines the flood drainage model, weather forecast, an accumulated water on-line monitoring system and a decision support system, and achieves support for urban accumulated water prediction and safety early warning. The urban accumulated water prediction and safety early warning system comprises the following steps: (1) combining a pipe network model with a production and confluence model to construct a flood drainage model; (2) depending on a flood drainage model, performing multi-scenario rainfall simulation and warehousing; (3) collecting and reporting real-time rain condition data; (4) calling a multi-scene rainfall bank; and (5) carrying out online prediction and safety early warning on road ponding. The urban accumulated water prediction and safety early warning system based on a flooddrainage model can effectively, accurately and dynamically forecast the flood prevention and drainage conditions of urban ponding-prone points in real time, and can facilitate decision support of a management department.

The invention discloses a ponding preventive water draining device with the filtering function. The ponding preventive water draining device mainly comprises a casing, wherein a filtering mechanism for filtering sewage through a filter screen is arranged in the casing; a driving mechanism for providing power for the device is arranged on the right side of the filtering mechanism; and a collectingmechanism for collecting filtered garbage through a pushing block is arranged on the lower side of the driving mechanism. The ponding preventive water draining device can carry out filtering and sedimentation treatment on water on a road and then drains the water in a sewer pipe; in addition, when the ponding on the road is serious, the water inlet quantity can be automatically adjusted to rapidlyclean the ponding on the road; and moreover, the ponding preventive water draining device can collect garbage filtered on the filter screen and garbage precipitated in a sedimentation tank to preventthe blocking phenomenon after a long time.

The invention belongs to the technical field of municipal engineering, and discloses a method for establishing a simplified hydraulic model of an urban downward-concave overpass area under different rainstorm situations. The method comprises the steps that the catchment range of a high-catchment area and a low-catchment area of the urban downward-concave overpass area and a high-precision DEM are determined to serve as earth surface elevation input conditions of the model; the input of a model pipe network is simplified through the rainfall loss form; the waterlogging disaster situation in the urban downward-concave overpass area under the different rainstorm situations is simulated through the computer hydraulic model; an improvement implement scheme is determined according to a model calculation result. The method for establishing the simplified hydraulic model of the urban downward-concave overpass area under the different rainstorm situations is stated, the waterlogging disaster situation in the urban downward-concave overpass area under the different rainstorm situations can be simulated, and a current overpass area designing scheme can be assessed. According to the method, it makes possible that the reason for ponding of a downward-concave overpass is analyzed through the hydraulic model, and a theoretical basis is provided for improving and planning the downward-concave overpass.

The invention discloses a cable trench and tunnel inspection unmanned aerial vehicle system. The system comprises an unmanned aerial vehicle and a control device; a modeling data acquisition device, acollision pre-warning device, an infrared data acquisition device, an infrared composite gas detection device and a temperature and humidity detection device are fixedly connected with the unmanned aerial vehicle; the unmanned aerial vehicle is electrically connected with the modeling data acquisition device, the collision pre-warning device, the infrared data acquisition device, the infrared composite gas detection device and the temperature and humidity detection device; and the control device and the unmanned aerial vehicle are wirelessly connected with the modeling data acquisition device, an upper computer, a BDS control intranet, the infrared data acquisition device, the infrared composite gas detection device and the temperature and humidity detection device. The system is capableof recognizing parameters and features such as temperature, humidity, harmful gas concentration, water seepage and ponding, cable damage, discharging, heating, snake and mouse in cable trenches and tunnels in real time, and carrying out demarcation and recording in environment data models, and has the characteristics of remote operation, high inspection efficiency, no leak inspection, safety, reliability and all-weather operation.

The invention relates to a sponge city drainage structure and a sponge city water circulating method. A road structure comprises a permeable concrete layer, a mortar leveling layer, a graded broken stone layer and a plain soil layer from top to bottom in sequence; support grids are arranged in the mortar leveling layer; a guide pipe for drainage is arranged in the graded broken stone layer; drainage ditches and road traffic stones are arranged on the two sides of the road layer structure; the drainage ditches are positioned between the road layer structure and the road traffic stones; drain pipes are arranged at the bottoms of the drainage ditches; water storage cavities are formed in the road traffic stones, and communicate with the drainage ditches through drainage holes; the other sides, relative to the drainage holes, of the water storage cavities communicate with green belts through permeable holes; the green belts comprise pebble beds, planting soil layers and green broken stonelayers in sequence from top to bottom; drainage pipes for drainage are arranged in the green broken stone layers; a water collecting pool is connected with a main pipe; and the guide pipe, the drain pipes and the drainage pipes communicate with the main pipe. The structure achieves the effects of reducing the city road ponding conditions and improving the rainwater utilization rate.

The invention provides a construction method of a large-diameter crushed stone pile. The construction method comprises the following construction steps of: cleaning miscellaneous fill on the surface layer of a soft foundation; when mountain stones are filled on the surface layer, firstly carrying out punching and hole guiding work and penetrating through a stone filling layer; sinking a large-diameter thin-wall steel sleeve with the outer diameter of 800-1600mm into the soft foundation until the depth reaches to a designed depth; constructing and finishing dry soil taking and hole forming work in the large-diameter thin-wall steel sleeve; matching a water pumping and discharging measure and completely draining water in a drainage hole; filling crushed stones in the hole by layers, and tamping and filling by layers, wherein the thickness for tamping by layers is more than 3m; tamping and filling by layers until the height is 50cm higher than a designed pile top mark height; pulling out the large-diameter thin-wall steel sleeve from the soft foundation; and forming the large-diameter crushed stone pile with the outer diameter of 800-1600mm in the soft foundation. The construction method has the advantages of low requirements on construction equipment, low construction difficulty, controllable quality of the prepared crushed stone pile, high bearing capability of the pile foundation, good water discharging capability and the like; and the prepared crushed stone pile is mainly applied to compound foundation or water discharging solidification treatment of buildings including a stacking field, a road, a large-size steel storage port foundation and the like on a large-area deep and thick soft foundation.

The invention relates to an ecotypic sloing planting container with the container, drain-vent pipe set at the bottom of the container, vent hole set on the inner side of the drain-vent pipe, and at least a piece of baffle set in the container. The bottom of the container doesn't leak hydrops not to corrode and damage the ground, is well ventilated, and especially when applied to the roofs of buildings, can insulate the heat; can prevent the planting or cultivating base material from leaking, which keeps environmental sanitation outside the container and also ensures storing some water; can stop the plants on the roof and the planting base material sliding in the container not to pile and lose.

The invention discloses a device for cleaning blocking of a drainage well cover of a sponge city pavement. The device comprises the pavement and a curbstone, a drainage channel is formed in the side,close to the curbstone, of the pavement, a mounting opening is formed in the channel opening of the drainage channel, the drainage well cover is arranged in the mounting opening, a water inlet cavityis formed in the curbstone, a water inlet communicating with the water inlet cavity is formed in the side wall of the upper end of the curbstone, a big piston is arranged in the water inlet cavity, anelastic airbag is connected between the lower end of the big piston and the inner bottom of the water inlet cavity, a drainage pipe communicating with the drainage channel is arranged on the inner wall of the water inlet cavity, strip-shaped cavities are formed in both sides of the drainage channel, the inner bottoms of the strip-shaped cavities are bonded to a vertically arranged folding airbag,and the folding airbag communicates with the elastic airbag through an air pipe. The device for cleaning blocking of the drainage well cover of the sponge city pavement is reasonable in structure, and when water on the pavement where the drainage well cover is blocked is accumulated to a certain degree, debris clogged on the drainage well cover can be jacked up in time to clear the blockage in time.

A sediment containment barrier capable of functioning in an outdoor environment for 18-24 months or more, while offering full rebound to compression impacts even after exposure to rain, construction traffic, and other harsh elements of an active construction site. Through a protected central core of foam or air surrounded by a water impermeable middle membrane and outer filtering shell, the barrier is able to withstand being run over by construction traffic hundreds of times while rebounding to its original shape and more importantly maintaining its compliance as an effective dirt and silt containment barrier. Due to the filtering qualities and the embedded nature of the barrier, the barrier offers high flow, reduction in the ponding of water, the effective filtration of sediment and silt, and a lower height than conventional sediment containment barriers.

The invention belongs to the technical field of pavement construction, and particularly relates to a water-permeable brick and a preparation method thereof, and a pavement construction technique. Compared with the prior art, the water-permeable brick has favorable physical properties and water permeability. The water-permeable brick prepared by using the pulverized graded construction wastes as the aggregate can implement recycling of construction wastes, and the preparation cost of the water-permeable brick can be lowered. The water-permeable brick pavement uses the water-permeable bricks with favorable water drainage and seepage actions as the paving material, so that rainwater can quickly seep into the bearing layer and directly seep into the underground soil layer, thereby supplementing moisture to the soil layer and improving the growth conditions of ground plants. The water-permeable brick pavement is beneficial to relieving the urban heat island effect, regulating the urban climate, reducing the PM2.5 in the air and preventing the pavement from water accumulation.

The invention discloses a roof rainwater collecting system, which comprises a roof, a rainwater collecting groove, a primary filtering device, a split-flow device, a reverse flushing filtering device and a rainwater collecting barrel, wherein the rainwater collecting groove is formed at the lower edge of the roof; the primary filtering device is arranged at the lower part of a water outlet opening of the rainwater collecting groove in a non-contact way, and can be used for intercepting sundries with large sizes to prevent a water passing pipeline from being blocked; an intercepting regulating rod of the split-flow device can intercept the rainwater from entering a regulating cavity so as to raise a floating ball valve; the early stage rainwater split-flow and the later stage pure water collection can be realized; the reverse flushing device is provided with a first filtering screen, a second filtering screen and a flushing device; the filtration on the collected rainwater can be realized; when pipeline accumulated water increase is caused by the blockage of the first filtering screen and the second filtering screen by filtering sundries, under the rainwater static pressure effect in the water passing pipeline, a piston is driven to move, a flushing outlet is opened; and the automatic flushing on the reverse flushing device can be realized. The roof rainwater collecting system has the dual filtering and early stage rainwater split-flow function; and the rainwater collection and utilization efficiency can be improved.

The invention discloses a method for dividing urban rainstorm waterlogging evaluation units based on a Voronoi diagram. The method includes the steps of using DEM data to determine the direction of water flow to extract low-lying points, and using low-lying point buffer zones to carry out combined screening for the low-lying points; intercepting centerlines of roads and rivers with regular grids,and selecting a center point of each section of the centerline; and generalizing pipeline data to extract real rainwater wells, water outlets and other nodes, and building a Voronoi diagram based on the above low-lying points, road and water system center points, pipelines and other nodes so as to complete the division of evaluation units in a study area. Compared with a traditional method for dividing waterlogging evaluation units using topographic data alone, the method integrates the functions of the actual water system and roads to collect the waterlogging and accumulated water on the basis of the topographic data, so that the divided waterlogging evaluation units better fit the actual situation.

The invention discloses an urban rainstorm water accumulation assessment modeling method based on full space-time, and the method comprises the following steps: 1, obtaining DSM data containing surface information, employing a D8 algorithm to divide a water catchment area, and modifying the boundary of the water catchment area according to the connection and distribution conditions of a real pipenetwork, so as to obtain the divided water catchment area; 2, establishing a surface runoff production model, and calculating runoff production of each catchment area; Step 3, establishing a surface confluence model, and calculating confluence of each catchment area; And step 4, establishing a drainage experience model to carry out drainage calculation, and calculating the drainage capacity of each catchment area through the drainage experience model so as to obtain an urban inland inundation assessment result. The DSM is adopted to divide the urban catchment area, the influence of urban planning and construction on urban topography reconstruction can be well reflected, and the method is more practical; The problem that drainage calculation cannot be carried out due to lack of structural data of a drainage pipeline is solved, and the operation time of the model is remarkably shortened.