877 results about "Water table" patented technology

The invention discloses a simulation regulation and control system and method of the percolation performance of an aeration zone of a river or a lake and relates to the technical field of research on water and soil resources and environmental engineering. The system comprises a seepage control device, an aeration zone simulation device, an underground water level regulation and control device anda data monitoring system, wherein the seepage control device comprises a seepage control column and a regulation column; the upper layer of the regulation column is connected with the seepage controlcolumn through a flange plate, and the lower layer of the regulation column is connected with the aeration zone simulation device through a water supply pipeline and a peristaltic pump; the aeration zone simulation device comprises a plurality of soil columns connected in series, and the underground water level regulation and control device comprises an underground water supply Markov bottle and an underground water balancing device which are connected through an underground water supplementing pipeline, and the underground water balancing device is connected with the aeration zone simulationdevice through the underground water supplementing pipeline. By adopting the system and the method, the hierarchical accurate simulation of a layered soil structure is realized, the accurate monitoring of the percolation performance of the aeration zone of the river or the lake is realized, and the simulation precision of the different types of layered soil is greatly improved.

The invention belongs to the slope stability estimation and landslide hazard monitoring and early warning technologies. A landslide forecasting method capable of utilizing underground water levels and displacement real-time monitoring includes the following steps: (1) landslide preliminary reconnaissance and monitoring point selection; (2) monitoring arrangement and installation of equipment; (3) monitoring the landslide displacement and the underground water levels in real time and processing real-time monitoring data; (4) statistical analysis period by unit and confirming mean-value underground water level HO and a displacement speed VO; (5) confirming underground water level loading and unloading parameters and loading and unloading quantities; (6) confirming displacement speed response parameters and displacement response quantities; (7) confirming the landslide displacement speed and underground water level loading and unloading response ratio parameters and numbers; (8) applying the underground water levels and displacement speed loading and unloading response ratio to carrying out evaluating slope stability and monitoring and early warning. According to the landslide forecasting method capable of utilizing the underground water levels and the displacement real-time monitoring, produced erroneous judgement or mistake judgement that landslide physics mechanical parameters, boundary conditions and the like can not be confirmed difficultly and accurately by the transitional ultimate equilibrium mechanics appraisal method can be overcome effectively.

A method and apparatus for desalinating water combined with power generation, comprising a desalination system used for desalinating coastal seawater and comprising a power generation system, wherein such dual purpose co-generation facility captures the heat vapor exhausted or a steam turbine generator's condenser is replaced by the desalination plant's heat exchanger enabling such captured heat energy to reduce the energy requirements of the desalination plant, and wherein brine solution being treated by the desalination plant is pumped from the substrata sea water table wells having low salt content brackish water.

The invention discloses a multifunctional unsaturated soil permeameter and a testing method thereof. The permeameter comprises a first bracket, a second bracket, a water supplementing device which is fixed on the first bracket and can perform up-and-down adjustment, and a soil sample permeation device which is fixed on the second bracket and can perform up-and-down adjustment, wherein the water supplementing device and the soil sample permeation device can be combined to form an underground water level rise simulation device, a flooding simulation device or a rainfall simulation device. The testing method comprises the following steps of: 1, performing underground water level rise, flooding and rainfall simulation tests, namely respectively performing the underground water level rise, flooding and rainfall simulation tests on the same tested soil sample by employing the underground water level rise simulation device, the flooding simulation device and the rainfall simulation device; 2, performing test data arrangement, and acquiring a permeation characteristic testing result of the tested soil sample. The multifunctional unsaturated soil permeameter is reasonable in design, low in investment cost, simple in operation, convenient in realization and good in using effect and can simply and rapidly finish the permeation characteristic testing process of unsaturated soil.

The invention discloses a method for supporting an existing building underground added storey through original pile foundations. The method comprises the steps that the pile foundations of the existing building underground added storey are end bearing piles; before soil around piles are excavated, foundation pit supporting and protection and underground water level reduction preparation work are carried out; the soil around the piles below an existing building is excavated; when the stability of the pile can not satisfy safety requirements, supports are installed between adjacent piles; a plurality of supports are arranged, and the soil around the piles is excavated until a designed elevation is reached; a newly added bottom plate of a basement is poured, and serves as a bearing platform of the pile foundations below the building; a support on the bottom storey is dismantled, and reinforcing steel bars are assembled around the piles from bottom to top; the piles are reinforced and reconstructed to form posts of the basement, and beams and plates of the basement are constructed at the same time; supports in all storeys are dismantled continuously, posts, beams and plates in the upper storey are constructed until the ground; soil is backfilled to the outer side of the basement. According to the method for supporting the existing building underground added storey through the original pile foundations, the existing building is provided with friction piles, new pile foundations are additionally arranged through press piles or bored piles arranged between the original pile foundations, the bearing platform is connected with the original piles through the bearing platform, and a new basement is additionally arranged according to an end bearing pile method.

The invention relates to the field of controlling underground water inrush disaster for mining projects and relates to a comprehensive treatment method of mine water inrush. The method includes the steps of setting a mine hydrogeology observation network; measuring a mine underwater supply area, a mine drainage area and a mine runoff area; exploring and measuring a water guide passage and fissures of the mine underwater supply area; determining and implementing a grouting curtain blocking scheme of the mine underwater supply area; designing and implementing a drainage treatment scheme of the mine drainage area, and after implementing the grouting curtain blocking scheme, performing underwater drainage treatment in the mine drainage area; implementing a scheme for dynamic monitoring of mine underwater level and information-based dredging and blocking treatment, during underwater drainage treatment in the mine drainage area, and dynamically monitoring the underwater level in the mine runoff area to finish the scheme.

The invention belongs to the technical field of agricultural planting, and in particular discloses a method for planting pearl guavas, which comprises the following steps: (1) the planting garden for the pearl guavas is planned, gutters are dug to drain stagnant water and reduce underground water level, a gutter is dug every 6.5 to 7 meters in the garden, the row spacing of plants in each border is between 3.5 and 4 meters, the row spacing of plants on two sides of the gutters is three meters, the space of the plants is between 2.5 and 3 meters, the plants are all planted through supporting piers, the height of the piers is between 25 and 30 centimeters, the pearl guavas are grafted, bred and fixedly planted mainly in spring; (2) fertilizer is applied, wherein the pearl guavas are fertilized by taking earthworm excretion as the basic fertilizer and are sprayed by microelement foliage fertilizer such as zinc, boron and molybdenum after fertilizer; and (3) field management work is carried out, including 1. controlling the time of fruiting of young trees, 2. reasonably keeping fruits and controlling the flowering and fruiting, and 3. wrapping the fruits by bags. The pearl guavas planted by the method have incrassated and broad leaves, big and stout fruits, sweet taste without acid taste, good color and luster of the fruits, juicy and crisp pulp, good mouthfeel and high yield, are suitable for standardization planting on a large scale.

An underground reservoir for storing water in alluvial deposits utilizes slurry walls keyed to an aquiclude beneath the reservoir to form a substantially impermeable water seal. A variety of water extraction/recharge apparatus provides for rapid and complete filling and draining of the underground reservoir. Such apparatus includes a plurality of wells distributed about the underground reservoir and a series of perforated pipes buried at a predetermined depth within the underground reservoir. A method of mitigating water table fluctuations resulting from the construction of an underground utilizes perforated pipes buried outside of the reservoir to transfer excess water from an uphill land parcel to a downhill land parcel that would otherwise experience a water shortage after construction of the underground reservoir.

The invention discloses a monitoring device for foundation pit deep horizontal displacement and the underground water level. The monitoring device comprises a monitoring module which is formed by detachably assembling a plurality of monitoring units in series. Universal couplings are adopted for mechanical connection between the monitoring units. Electric power and electric signals are all connected through cables with aviation plugs or sockets. According to the monitoring device for the foundation pit deep horizontal displacement and the underground water level, the multiple inclination monitoring units are connected in series, and therefore the monitoring device can adapt to deformation of a monitoring hole and can continuously monitor inclination changes of the monitoring hole for a long time in the monitoring hole. All the monitoring units are connected through spherical joints, the monitoring device can still be sunk into or be pulled out of the monitoring hole freely under the condition that the monitoring hole deforms, the repeated usage rate of the device is increased, and the engineering cost is reduced.

The invention discloses a method for dewatering a large-area foundation pit on a silt stratum, which belongs to modification of existing methods of dewatering light well points and includes the steps: firstly, setting well points, and determining spacing and depth of the well points according to dewatering depth and dewatering area; secondly, constructing the well points; thirdly, installing a dewatering system; fourthly, cleaning up wells; fifthly, operating the dewatering system to pump water; sixthly, regionally repeating the steps from one to five for dewatering a large-area foundation pit, lowering the water level to an expected depth, and maintaining the water level; seventhly, dismantling the dewater system within the foundation pit, maintaining the system to operate until the foundation pit is backfilled above the underground water level, and maintaining the underground water level to meet demands during construction; and eighthly, dismantling the foundation pit and maintaining the dewatering system. Mutual coupling among the well points is fully utilized, so that dewatering efficiency is improved. Compared with conventional light well point dewatering methods, the method is short in construction period, low in manufacturing cost and effective.

The invention discloses a marine environment and dynamic load coupling test equipment system, which comprises marine environment simulation environment box equipment (1) and an electro-hydraulic servo dynamic and static testing machine (2), wherein the electro-hydraulic servo dynamic and static testing machine comprises a testing machine loading head which applies power load to a test piece, a dynamic load control circuit and an electronic control cabinet; the electronic control cabinet is used for providing saline water and compressed air for a saline water spraying device; the electronic control cabinet is connected with the saline water spraying device via an air pipe and a water pipe; the test piece is fixedly arranged on a test piece support in the body of the marine environment simulation environment box; and the test piece is subjected to loading compression, stretching and bending deformation loading under different environments of saline water dipping, saline water fluctuation and saline water atomization. According to the marine environment and dynamic load coupling test equipment system disclosed by the invention, dynamic load as well as the environments of saline water dipping, saline water fluctuation and saline water atomization can be simultaneously provided for the experiment test piece, the characteristics of marine structure service under the marine environment conditions, such as marine underwater areas, water table fluctuation areas, splash areas and the like, can be simulated.

The invention discloses a side slope dynamic stability coefficient determination method and technology based on underground water level change and displacement monitoring data. The landslide formation motivation and mechanism are cross coupled with displacement response information change and an evaluation method thereof. A nonlinear unload and load response ratio parameter prediction model is established so that the side slope stability coefficient determination method based on underground water level and displacement change is established. According to the landslide displacement prediction method, the idea of a conventional displacement time sequence prediction method that only landslide displacement or displacement rate is selected to act as monitoring and evaluation parameters is changed, and simultaneous monitoring and integration of landslide underground water level and displacement or displacement rate are put forward so that the coupling integration power prediction parameter and evaluation method of landslide underground water level and displacement or displacement rate is confirmed. The limitation that a static limit mechanics evaluation method cannot analyze and evaluate the change rule of side slope stability along with time can be overcome by the method, and a defect that the conventional displacement time sequence prediction method cannot analyze and evaluate the landslide formation mechanism and motivation can also be overcome by the method.

The invention discloses a household type new air machine set. The household type new air machine set solves the problem that PM 2.5 cannot be effectively filtered and outlet air temperature and moisture content are not adjustable in the prior art. The household type new air machine set comprises an outdoor air inlet, a new air outlet, an indoor air inlet, an air exhaust opening, a PM 2.5 filter, a heat recycling device, an air return filter, a water meter cooler, an evaporator of a compressor, a condenser of the compressor, an adjusting 3-way valve, a throttle valve, a forced draught blower, an air exhaust machine, a controller, and an electric bypass ventilation valve. According to the household type new air machine set, through a built-in compressor evaporation and refrigeration method, combined with a water table cooler and the condenser, depth moisture elimination and temperature adjustment are conducted to new humid air entering the machine set, through the linkage of a temperature and humidity detector and the electric bypass ventilation valve, frosting of a heat recycling module is prevented, and it is guaranteed that humidity and temperature of the new air machine outlet air are stable and adjustable. The household type new air machine set provides a reliable and energy saving processing method for a temperature and humidity independent control adjustable system, and can be applied in green buildings and meets the using standards of the green buildings.

The invention provides a method for cultivating Chinese wolfberry in a saline and alkaline land through drip irrigation with saline water, which comprises ridging, planting and irrigation management, and is characterized by comprising: A, a step of manual ridging; B, a step of planting, in which the row spacing is 3 meters and the plant spacing is 1 meter; C, a step of drip irrigation zone setting, in which a single drip irrigation zone is arranged in a single ridge; D, filming covering and irrigation, in which spring irrigation is performed after film covering with local underground saline water in a mount which is four times of that used for daily irrigation continuously for three days till the water accumulates to a fixed amount of 16 millimeters; E, a step of pruning the Chinese wolfberry in a growth season; and F, winter irrigation, in which winder irrigation is performed once after the growth season of the Chinese wolfberry with 16 millimeters of water. According to characteristics of a saline and alkaline land in the groundwater area, the method maintains the water potential in the soil of the root area of the Chinese wolfberry at a constant higher value through ridging, filming covering and saline water drip irrigation and other measures to ensure Chinese wolfberry absorbs water normally and grows, thereby providing a good growing environment for the Chinese wolfberry and increasing the output and quality of medlar. Meanwhile, irrigation with local underground saline water reduces the water level of underground water and reduces the risk of further raising the water level of ground water due to irrigation with extraneous water.

The invention discloses a soil column simulation experiment device aiming at reclaimed soil and coal ash matrix in a mining area. The soil column simulation experiment device comprises a transparent column body, a plurality of flange disks, a movable plate, a stainless steel wire gauze, a base disk, a bracket and an underground water level simulation component, wherein the base disk is fixed at one end of the column body; the bracket is connected with the base disk; the column body has a multi-section structure and consists of a plurality of sub column bodies; two adjacent sub column bodies are fixedly connected by one of the flange disks; the movable plate and the stainless steel wire gauze are accommodated in a groove of the flange disk close to the bottom; and the underground water level simulation component is connected to the bottom of the base disk. The soil column simulation experiment device has the advantages that when capillary water rises, experiments such as soil water and salt movement under an atmosphere rainfall condition, soil water and salt movement under an evaporation condition and soil water and salt movement under an underground water level change control condition can be simulated; and the water and salt movement in the coal ash matrix of the reclaimed soil filled by the mining area coal ash can be dynamically observed through the device, so that a reclaiming mode suitable for crop growth can be found out.

The invention relates to a low-lift high-flow reversible tubular pump with asymmetric SX type blades. The low-lift high-flow reversible tubular pump comprises a forward water inlet runner, a rotating wheel, a guide blade, a gear box, a reversible motor, a bulb body, a sleeve pipe and a reverse water inlet runner. The low-lift high-flow reversible tubular pump is characterized in that the rotating wheel comprises the blades, a hub and a runner cone, wherein the blades are evenly arranged on the hub in the circumferential direction, and the runner cone is arranged on the reverse sluicing side of the hub; the blades are in a spatial warping SX shape, the axial midsection wing sections of the blades are in an asymmetric S shape, the guide blade is a movable guide blade oblique relative to the spatial curved surface, and the guide blade and the rotating paddle-type blades achieve the cooperation function. According to the low-lift high-flow reversible tubular pump, the demands that the water flow in a water pumping working condition and the water flow in a power generating working condition of the reversible tubular pump are opposite and the dual working conditions of water pumping and power generating can be met by one rotating wheel are met, and it is ensured that the efficiency in the two working conditions reaches the best. The reversible tubular pump is suitable for various reversible tubular pump stations with the water table drop ranging from 2 m to 5 m, and the efficient development and utilization of water resources can be achieved.

The invention discloses a simulation test model device for studying hyporheic exchange under drive of flood pulse and a using method thereof. The simulation test model device comprise a trough body, an upstream ground surface water supplementing system, an underground water control box and a flood pulse driving device. A partition plate capable of dividing the trough body into a water level control chamber and a water discharging chamber, and a river nearby beach model is arranged in the water level control chamber. The underground water control box can perform hyporheic exchange with the river nearby beach model. The flood pulse driving device comprises a lifting piston capable of lifting in a partition plate and a periodic waveform driving device. The lifting piston can periodically lift under the drive of the periodic waveform driving device and enables a flood peak process line in the water level control chamber to change periodically. After the simulation test model device and the using method are adopted, the upstream ground surface water level periodically and proportionally changes along the flood peak process line under the drive of the periodic flood pulse, and the downstream underground water level is kept constant and is approximate to the hyporheic exchange situation of a natural flooding beach land.

The invention discloses a high speed railway embankment structure in salty soil regions. The high speed railway embankment structure comprises a ground stabilization body arranged in soft foundation, wherein a reinforced mattress layer is laid above the ground stabilization body; a salty soil isolation layer is laid above the reinforced mattress layer; a filling embankment is laid above the salty soil isolation layer. The high speed railway embankment structure is simple in structure and convenient to construct, the reinforced mattress layer on the base is fully utilized as a carrier, the isolation measures are taken through the salty soil isolation layer made by taking a composite geomembrane or a capillary drain board as a main body, the high speed railway embankment structure is small in layer thickness and relatively low in material price and has obvious advantages compared with the measures of excavating a great quantity of salty oil, reducing underground water level, permeating water and soil or isolating asphaltic sand, the project investment can be obviously reduced, the environmental pollution is alleviated, capillary water of the salty oil can be effectively prevented from eroding the embankment body, and high service performance and long-term stability of the embankment engineering are guaranteed.

The invention discloses a construction method by adopting dewatering and water recharging to control sedimentation surrounding a deep foundation pit, which comprises the following steps that: quantity and depth of dewatering wells are accurately determined by calculating water inflow of the deep foundation pit under the action of pressure water and the construction quality of finished wells is guaranteed; aquifers and pervious beds of the soil outside the foundation pit are determined through a geological exploration report, a target soil layer to be recharged is calculated, and a steel sleeve is sent to the target soil layer through a method for drilling a slope inside the foundation pit; a high-level water tank is arranged on the top part of the foundation pit, the water outlet of the high-level water tank is connected with a recharging well opening, water inside the foundation pit is pumped by a high-pressure pump to the high-level water tank and then to be pressed to the recharging well through the high-level pressure and to reach the recharged target soil layer. By utilizing the method, the underground water level inside the foundation pit can be maintained at a set water level, so a favorable condition can be created to the project construction. At the same time, the underground water level outside the foundation pit is adjusted to be stably maintained within a warning level, so powerful guarantee can be created for the safety of roads and buildings outside the foundation pit.

The present invention is directed to a subsurface drainage system for a playing surface. The subsurface drainage system includes a subgrade, an intermediate layer disposed over the subgrade, a layer of semi-permeable filter fabric disposed over the intermediate layer, an upper permeable layer disposed over the layer of filter fabric and on which the playing surface is disposed, and a hydronic piping network disposed in the upper layer near the layer of filter fabric. The layer of filter fabric has a permeability less than the permeability of the intermediate layer and such that the layer of filter fabric functions as a perching layer to support a perched water table above the filter fabric. The hydronic piping network is positioned within the perched water table such that the water of the perched water table functions as a heat exchanger to facilitate heating and cooling of the upper layer upon the hydronic piping network being heated or cooled.

The invention discloses a high-ridge cultivation method of Chinese gooseberries, which comprises steps of flattening soil; ridging, wherein space between ridges is controlled to be 6-8m, the height of the ridges is 0.5-0.6m, the ridges are formed by using improved surface soil and ladder-shaped, and ridges are smashed; planting, wherein the upper parts of the ridges are dug to be used for planting, and strong Chinese gooseberry seedlings are chosen to be planted; planting the seedlings in the center parts of furrows, tamping earthing soil, and fully watering seedlings with rooting water; after the surface soil of the ridge furrows and an organic fertilizer are mixed, digging the mixture of the surface soil and the organic fertilizer out and piling to the ridge sides to make the height of the ridges reach 0.9 m to 1 m; and fertilizing and earthing up according to the growth conditions of the Chinese gooseberry seedlings. The high-ridge cultivation method is simple in operation. The purpose of limiting the root region can be achieved by reducing the cost, the influence of overhigh ground water level to the Chinese gooseberry growth is avoided and the fruit quality is greatly enhanced.

The invention relates to a monitoring and early warning system and method, belongs to the technical field of coal mine monitoring, and particularly relates to a comprehensive monitoring and early warning system and method for floor water inrush in a coal mining working face. The comprehensive monitoring and early warning system and method mainly focus on real-time monitoring and graded early warning of a goaf part during the recovery process and after the recovery process of a mine coal mining face, based on a "lower three zones" theory, and a numerical simulation method is combined to determine monitoring positions, a microseism monitoring subsystem is used for monitoring the damage depth of a floor in the coal mining working face, a multi-frequency continuous electrical monitoring subsystem is used for monitoring the height of water table of confined water in the floor of the coal mining working face, the distance between the lowest point of floor damage and the highest point of height of water table of the confined water is calculated; a floor water inrush coefficient method is used for dynamically calculating the water inrush coefficient of the floor of the entire working surface; and the level of floor water inrush early warning is determined through different water inrush coefficients, early warning indication of stress and strain, early warning indication of water temperature and water pressure, and early warning is performed.