36 results about "Subsoil" patented technology

The invention relates to a profiling two-section subsoiler for hilly and mountainous areas, and belongs to the field of agricultural mechanical equipment. The deep scarification device comprises a three-point suspension device, a first-stage profiling device, a second-stage profiling device, a first-stage deep scarification device, a second-stage deep scarification device, a rear soil crushing device, a rack and a stop dog, the first-stage deep scarification device is located at the front end of the rack, the second-stage deep scarification device is located behind the first-stage deep scarification device, the soil penetrating depth of the first-stage deep scarification device is small, and the soil penetrating depth of the second-stage deep scarification device is small. The secondary deep scarification device is deep in soil, the primary deep scarification device and the secondary deep scarification device are matched to complete deep scarification operation of cultivated land, the primary deep scarification device is installed on the primary profiling device, the secondary deep scarification device is installed on the secondary profiling device, the rear soil crushing device crushes deep scarified soil, and follow-up cultivation operation is facilitated. The subsoiler solves the problems of low terrain flatness of cultivated land in mountainous areas and hills, low operation matching horsepower of the subsoiler, large subsoiling operation resistance, poor effect and difficulty in breaking a plow pan, so that the subsoiling operation of the cultivated land in the hilly areas is efficient and rapid.

The application provides a pick-up type underground groundwater level control device, which comprises a receiving box and a machine box buried in a pit, a top end of the receiving box is detachably provided with a cover plate, a top end of the cover plate is provided with a water filling opening assembly, an inside of the receiving box is provided with a rainwater filtering and storing assembly, a top end of the rainwater filtering and storing assembly is provided with a surface water detection assembly protruding above the ground, the machine box is provided with a drainage mechanism for pumping rainwater in the receiving box, a water outlet end of the drainage mechanism is connected with an underground drainage pipeline, an inside of the machine box is provided with a liquid level jump mechanism for controlling opening and closing of the drainage mechanism according to a water level in the receiving box, a power supply for supplying power to the device as a whole and a controller for controlling operation of the device as a whole. The application can collect rainwater, adjust water storage capacity, effectively filter rainwater, discharge excess rainwater into the underground drainage pipeline and automatically monitor whether to perform greening belt irrigation and the like.

The invention relates to a filter drain (20) for draining fluid from a subsoil, wherein the filter drain comprises: an outer pipe (21) for insertion into the subsoil, wherein the outer pipe comprises an outer pipe circumferential wall (22) with a filter drain inlet (25) for receiving the fluid from the subsoil; an inner pipe (31) inside the outer pipe, wherein the inner pipe and the outer pipe together bound a fluid receiving channel (35) that is in fluid communication with the filter drain inlet, and wherein the inner pipe internally bounds a drainage channel (36) for evacuation of the received fluid; and a floater assembly (50) inside the outer pipe, wherein the floater assembly comprises a fluid passage device (51) with a fluid inlet opening (59) between the fluid receiving channel and the drainage channel, and a floater (70) that is moveable in a moving direction with respect to the fluid passage device between a draining position and a closing position, wherein in the draining position a fluid passage is present from the fluid receiving channel to the drainage channel via the fluid inlet opening, and wherein in the closing position said fluid passage is blocked.

The utility model provides a sandy gravel bottom layer pile foundation cleaning tool, and relates to the technical field of pile foundation cleaning, the sandy gravel bottom layer pile foundation cleaning tool comprises an extraction pipe, the outer surface of the extraction pipe is provided with a first gas transmission assembly and a second gas transmission assembly, the first gas transmission assembly is connected with a plurality of first nozzles, and the second gas transmission assembly is connected with a plurality of second nozzles; the second spray head, the first spray head, the first air conveying assembly and the second air conveying assembly are matched with one another to be used for conveying compressed air into the pile foundation so that the compressed air can turn over mud. The cleaning tool can be matched with an existing air compressor, so that the air compressor conveys compressed air into the pile foundation through a first air conveying assembly, a second air conveying assembly, a second spray head and a first spray head, effective stirring of slurry is achieved, and the stirring effect enables the slurry to be more evenly distributed in a hole; the pumping efficiency of the slurry pump is improved, scattered muck can be promoted to be mixed with the slurry, and therefore the cleaning effect is greatly enhanced.

The invention provides a foundation pile low-strain reflection wave method test method, and belongs to the technical field of pile foundation detection. The method comprises the following operation steps: S1, building a column-bearing platform-pile soil system three-dimensional dynamic model under a rectangular coordinate system according to an elastic theory; s2, a pile, a bearing platform, a column, soil around the pile and soil at the bottom of the pile are regarded as isotropic linear elastomers, physical power is not considered, and system dynamic response is solved based on an elastic wave equation; s3, analyzing the influence of different excitation force positions and different vibration pickup positions on the speed response curve; s4, verifying the correctness of the theoretical model by comparing the numerical calculation curve with the actual measurement curve, and applying the theoretical model to engineering practice to assess the completeness of the foundation pile. Through three-dimensional theoretical innovation, test technology optimization and engineering verification, the accuracy, reliability and practicability of low-strain detection of the column-bearing platform-pile system are comprehensively improved; an effective technical solution is provided for foundation pile integrity evaluation under complex conditions, and the method has important theoretical value and engineering application prospects.

A water barrier inhibits flow of water through water permeable subsoil. The water barrier includes a mixture of bacteria such as sporosarcina pasteurii that when combined with water and salt reacts with CO2 to build limestone. The water barrier is created by providing a mixture that can fill voids in a water permeable subsoil and introducing the mixture into the water permeable subsoil to fill voids. The mixture is introduced by creating a passage through the water permeable subsoil layer and pumping the mixture into the passage.

The invention discloses a molybdenum tailing harmless treatment and functional soil dressing preparation method based on a geopolymer, the curing rate of sulfides in molybdenum tailings can be increased to 95% or above through a three-dimensional network structure formed by the geopolymer, and generation of acid wastewater and migration of pollutants are thoroughly blocked; the pH value of the prepared alien soil is stabilized at 7.0-8.5 (neutral and slightly alkaline), the compressive strength of 7 days is larger than or equal to 0.5 MPa, the compressive strength of 28 days is larger than or equal to 1.0 MPa, the water retention rate is larger than or equal to 60%, and the prepared alien soil can adapt to multiple purposes such as mine area regreening, slope protection and farmland improvement according to scene requirements, and meets the requirements of vegetation growth and engineering stability. The technology of using local materials and preparing at normal temperature is adopted, high-temperature calcination is not needed, the treatment cost is reduced by 30%-50% compared with that of traditional landfill, foreign soil can be applied nearby, the long-distance transportation cost is avoided, and economic benefits are remarkable. Solid waste is used as a main raw material of the soil dressing, carbon emission is reduced by 60% or above compared with that of traditional soil dressing, acid soil can be improved, the double-carbon target and the ecological restoration concept are met, and environmental benefits are outstanding.

The utility model relates to agriculture and can be used for seasonal subsurface irrigation of trees, primarily in areas with sandy loam and sandy soils under conditions of extremely high temperatures and water shortages. The subsurface irrigation device, which includes a tank and a protective screen, according to the utility model, features a tank mounted in a permeable casing with a layer of black soil at the bottom. The tank, within the casing, is mounted on a waterproof protective screen made of bentonite or clay. The tank has a tube at the bottom for delivering water to the plant's rhizome. The top of the tank is equipped with a protective ring made of porous concrete, painted a reflective color. A light indicator connected to a float is installed in the neck of the tank.The device is equipped with a synthetic fabric cord placed in a tube to deliver water to the plant's rhizome for capillary irrigation. The cord's outlet end is connected to a geotextile skirt located around the rhizome. This subsurface irrigation device provides the required irrigation rate in sandy and sandy loam soils, maximizing the use of irrigation water for the irrigated tree's root system.

A three-dimensional network drainage salt control and alkali discharge method and system, the method comprising the following steps: laying a soil improvement salt control and alkali discharge channel in a subsoil layer of the saline-alkali soil to be improved for discharging saline-alkali water in the topsoil layer and the subsoil layer from the soil body; laying a hidden passage salt control and alkali discharge channel in a bottom soil layer of the saline-alkali soil to be improved for discharging saline-alkali water below the subsoil layer and discharging the upward saline-alkali water when the saline-alkali water upwardly returns below the bottom soil layer; and drilling a vertical shaft salt control and alkali discharge channel in a micro-domain alkali spot area of the saline-alkali soil to be improved for opening a water-permeable alkali discharge channel from the topsoil layer, the subsoil layer to the bottom soil layer. The invention also provides a three-dimensional network drainage salt control and alkali discharge system constructed by using the above method. The invention improves the number of drainage channels, improves the drainage efficiency, prolongs the service life, reduces the construction cost, and solves the problem of difficulty in discharging salt in the micro-domain hard alkali spot block area where the saline-alkali water upwardly returns.

A water barrier inhibits flow of water through water permeable subsoil. The water barrier includes a mixture of bacteria such as sporosarcina pasteurii that when combined with water and salt reacts with CO₂ to build limestone. The water barrier is created by providing a mixture that can fill voids in a water permeable subsoil and introducing the mixture into the water permeable subsoil to fill voids. The mixture is introduced by creating a passage through the water permeable subsoil layer and pumping the mixture into the passage.

The present application relates to the technical field of mine ecological restoration, and discloses a sandy mudstone composite guest soil based on geopolymer and a preparation method and application thereof, aiming to solve the problems of pollution caused by accumulation of solid waste of sandy mudstone in open-pit coal mines, low resource utilization rate, lack of guest soil for ecological restoration in mining areas, poor water and fertilizer retention, and weak erosion resistance. The present application takes the sandy mudstone in open-pit coal mines as the core aggregate, and is compounded with a complex geopolymer cementing material, an alkaline activator, a modified functional agent, and a water and fertilizer retention component. After treatment, the compressive strength reaches about 2 MPa, and then the product is made into a finished composite guest soil by a breaker and a pulverizer. The finished guest soil has good bulkiness and excellent biocompatibility, and has the abilities of stable water and fertilizer retention and anti-loss performance. The raw materials are locally sourced, the preparation process is simple, and the finished product can be directly applied to ecological restoration in areas such as goaf, dump, and slope in open-pit coal mines, so as to achieve the dual goals of on-site disposal of solid waste and ecological restoration.

The invention relates to the technical field of agricultural planting. The invention provides a winter rape straw mulching no-tillage direct seeding planting method which comprises the following steps: (1) collecting straws on the earth surface of a to-be-planted area, ditching on the earth surface of the to-be-planted area, and constructing a planting bed; (2) precisely sowing on the planting bed, and covering the straw collected in the step (1) on the surface. The three-layer structure of the subsoil layer, the seed layer and the straw covering layer is innovatively constructed, and the problem of'high seedlings' caused by seed suspension in the traditional straw returning mode is effectively solved. According to the method, the straw covering layer is used for preserving heat and soil moisture and inhibiting weed and bird damage, meanwhile, the subsoil layer is used for ensuring that seed implantation is stable, the emergence rate and the overwintering survival rate of the oilseed rape are remarkably increased, and cooperation of straw resource utilization and high yield and high efficiency of the oilseed rape in the rice-oil rotation cropping mode is achieved.

A lawn irrigation system with a draining subsoil and water recycling, characterized by comprising an irrigation subsystem (5) and a multi-layered subsoil formed, from top to bottom, by a substrate layer (2); a sand layer (3); a mixed filter layer formed by a biochar layer (6), a zeolite layer (7), a gravel layer (8), and a separating geotextile (4) between them; a drainage sheet (9); and an impermeable layer (11), the impermeable layer (11) being inclined towards one or more reservoirs (12).

The present disclosure provides a sand soil large-diameter pile foundation P-Y curve correction method and system, the scheme comprises: dividing the sand soil foundation into several subsoil layers, obtaining the sand soil internal friction angle, soil effective gravity of each subsoil layer and vertical depth from the mud surface at the middle height of each subsoil layer based on geological exploration; based on the obtained internal friction angle and the expression in the API specification P-Y curve method, the correlation coefficient is calculated; based on the soil effective gravity, vertical depth and correlation coefficient, the standard value of the limit horizontal soil resistance of each subsoil layer per unit pile length is obtained; based on the load characteristics and the preset cycle number, the correction coefficient is determined, and the initial modulus of the foundation reaction force is calculated based on the internal friction angle; based on the limit horizontal soil resistance standard value, correction coefficient and initial modulus of foundation reaction force, the P-Y curve of each subsoil layer after correction is obtained; based on the obtained P-Y curve and the finite element simulation analysis software, the deformation analysis of the horizontal bearing pile is realized.

The transformation of seabed sediments into organic sludge is a serious problem, both in improving the water environment of enclosed sea areas through sediment improvement and in river dredging as a flood control measure. Japan's organic sludge disposal sites are controlled facilities, and their remaining capacity is becoming critical. Constructing new disposal sites requires enormous project costs and construction time. [Solution] The solution of this invention involves forming a subsoil improvement layer on the seabed by consolidating the surface layer of the organic sludge using a rapid vacuum consolidation method, thereby increasing its density and strength, and stabilizing it on the seabed. Substances that cause water pollution in the subsoil are forcibly dissolved by consolidation wastewater to form an impermeable improved soil layer, which then seals in the organic sludge below. Meanwhile, the wastewater containing pollutants is properly treated. By forming an even more effective impermeable improved soil layer instead of permeable sand capping, a sustainable and healthy aquatic environment is restored without the need for sand capping materials or the generation of dredged soil.

Device (10) for deep foundations of structures, in particular for noise and visual barriers, comprising a cylindrical steel tube, which serves as a foundation tube (11) for vibration-free insertion into a subsoil intended for the foundation, with a first open end (12) in the working direction (20) and a second free open end (13) arranged diametrically apart from it, wherein a cutting device (26) is arranged at the first free open end (12) such that soil material can be directed into the foundation tube (11) and removed at the second free open end (13) and thereby the original density of the in situ subsoil surrounding the foundation tube (11) can be substantially maintained, and the cutting device (26) comprises at least two cutting plates (14, 15, 21, 22) arranged radially outside the outer circumference of the steel tube,the ends of the foundation pipe (11) are arranged at an angle to the axis of the foundation pipe (11) and spaced apart from each other, characterized in that the cutting unit (26) comprises cutting plates (14, 15, 21, 22) arranged on the outside (16) of the foundation pipe (11), which have an angle of attack relative to the inner axis of the foundation pipe (11) depending on the soil to be founded, which is essentially preset by the density of the soil to be founded.

The present application relates to a method for raising and resetting the subsided foundation of a plant in deep-lying workshops, belongs to the technical field of foundation settlement resistance and correction, and comprises: S1: Determination of the pressure diffusion angle of the subsoil based on the ratio of the compression modulus of a load-bearing layer and an underlying layer, namely ES1 / ES2, as well as the value of Z / b; S2: Determination of the load diffusion zone based on the pressure diffusion angle of the subsoil; S3: Grouting and stabilizing the unstable soil in the soft underlying layer according to the load diffusion zone to form a grouted and stabilized body; S4: Grouting and stabilizing the load-bearing layer according to the load diffusion zone, arranging grouting holes in two triangular areas along the lines of the pressure diffusion angle, the grouting holes being distributed on both sides of the plant foundation;S5: Grout reinforcement in the middle area of ​​the load-bearing layer for lifting; S6: Construction of an irregular composite foundation support structure at the base of the soft underlying layer. The present application enables a deep reinforcement of the foundation in order to save material while simultaneously ensuring the requirements for permanent settlement stability of the foundation and achieving the corrective effect.

The utility model discloses an expanding drill bit, which relates to the technical field of building construction foundation piles and comprises an expanding device mounted on a core tube. Part of the expanding device can obliquely extend to the outer side of the core tube; the expanding device rotates along with the drill bit, and the bottom end of the expanding device rotates to the part outside the outer diameter range of the spiral blade I and simultaneously cuts a hole wall rock-soil body so as to realize expanding; the expanding device is provided with an oil cylinder, a shaft II, a yoke plate, a shaft III, a hollow connecting rod, a locking pin, a shaft IV and an expanding body; according to the expanding drill bit, the displacement sensor is arranged on the oil cylinder, the expanding size is monitored and determined in real time, the stability of the expanding amount of a construction pile type is guaranteed, and digital construction is achieved; the oil cylinder of the expanding device in the expanding drill bit is arranged in the closed cavity of the drill bit, so that the service life is long; the expanding drill bit can be used for cast-in-place pile construction of re-compaction concrete, and compaction of pile subsoil is achieved; the expanding body in the expanding drill bit can be screwed out of various sizes, pile types of pile sections with different expanding diameters can be formed, and optimization design is facilitated.

This invention discloses a digital design method for bridge pile foundations based on the coordination of geological and pile foundation parameters, comprising: S1, constructing a geological database; S2, acquiring the unique geological profile information of each pile, setting the initial value of the pile length for each pile, and obtaining its comprehensive value and the vertical foundation coefficient of the soil at the pile bottom; S3, establishing and solving equilibrium equations, and then calculating the external force vector at the pile top of each pile; S4, calculating the single pile bearing capacity and determining the pile length: S41, calculating the design axial force and allowable bearing capacity of each pile; S42, if [condition missing], then setting the pile length to the required length; if [condition missing], then adjusting the pile length in S2, executing S2~S41 until [condition missing]; S5, calculating the internal forces of the pile body section of each pile based on the external force vector at the pile top, the comprehensive value, and the vertical foundation coefficient of the soil at the pile bottom, for reinforcement design. This invention realizes pile foundation design with a one-pile-one-geological-model, saving materials and solving the problem of interdisciplinary collaboration.

The invention is a system and method for repairing, improving, and stabilizing subgrade and subsoil / natural ground layers of a rail bed generally consisting of softer soils. One embodiment includes a method of installing subsurface inclusions and ballast fills comprising injected slurry mixtures of stabilizing material such as cement grout mixed with in situ soil. Another embodiment includes a system of installed ground inclusions and ballast fills. Another embodiment includes an integrated system of equipment for emplacing the system of inclusions and ballast fills.

Method for determining a flow rate of a drilling mud in a subsoil drilling system which includes a main duct and a bypass conduit. The bypass conduit has a narrowed section. The method includes: feeding the bypass conduit with drilling mud, coming from a drilling well formed by the system and carrying drilling cuttings; coupling, to the narrowed section, a differential pressure sensor generating a first signal representative of a difference between a first pressure detected upstream or downstream of the narrowed section and a second pressure detected in the narrowed section; coupling, to the bypass conduit, a thermal dispersion sensor generating a second signal representative of a velocity of the mud; selecting, as a mud flow rate value, one of a first value calculated based on the first signal and on a density value of the mud, and a second value based on the second signal.

The utility model relates to the technical field of agricultural planting, and particularly discloses a quantitative under-soil fertilization device for seedlings, which comprises a soil expanding frame, a first communicating groove is formed in the soil expanding frame; rivets are symmetrically inserted into holes formed in the first communicating groove. The rivet is sleeved with a soil shoveling frame; a second communicating groove is formed in the soil shoveling frame; the upper end of the soil expanding frame communicates with and is fixedly connected with a second stress application pipe; the second stress application pipe and the first stress application pipe are held to be inserted into soil, then the second stress application pipe and the first stress application pipe are opened to drive the soil expanding frame and the soil shoveling frame to be far away from each other, then quantitative fertilizer is poured into the first stress application pipe, and then the fertilizer enters expanded pits in the soil along the second communication groove, so that under-soil fertilization is realized; then the soil expanding frame and the soil shoveling frame are lifted upwards and combined at the same time, then the cracked soil is treaded by feet, the fertilizer is thoroughly sealed, the soil is broken through a lever with a simple structure and labor saving, and the labor intensity of large-area seedling fertilization is reduced.

The present invention relates to adsorbent material that contains at least subsoil and at least one adsorbent, to mineral soils containing such adsorbent materials, to a process for producing the adsorbent materials, to a process for producing mineral soils that contain such adsorbent materials, to the use of adsorbents for producing adsorbent materials, and to the use of adsorbent materials for producing mineral soils.

The utility model discloses a pervious concrete structure with a rainwater collection function, which comprises a roadbed layer, a water storage tank, a pervious concrete layer and a pavement layer which are sequentially arranged from bottom to top, two roadside layers are further arranged at the top of the roadbed layer, and the roadside layers are mutually attached to the water storage tank, the pervious concrete layer and the pavement layer. The two sides of the water storage tank communicate with water passing pipes, a plurality of first water seepage holes are formed in the top of the water storage tank in a matrix mode, and a first water passing cavity and a second water passing cavity are formed in the roadside layer from top to bottom. The pervious concrete structure with the rainwater collection function is reasonable in design, rainwater can be effectively discharged and collected and utilized in rainstorm weather, impurities can be synchronously prevented from flowing in in the collection process, and therefore the cleanliness of the rainwater is guaranteed, waste of water resources is also avoided, and the pervious concrete structure is suitable for popularization and application. And the whole concrete is high in structural strength, long in service life and good in use effect.

This invention relates to the field of ecological technology, specifically disclosing a soil matrix containing mud cake, its preparation method, and its application in ecological restoration. The soil matrix of this invention comprises a solid mixture and water. The solid mixture includes: 0.005%-0.01% nitrogen-fixing compound bacterial agent, 20%-45% organic compound slow-release material, 25%-40% mud cake, 28%-42% deep subsoil, 0.05%-0.1% cationic polyacrylamide, and 0.2%-0.4% vinyl acetate-ethylene carbonate copolymer; the nitrogen-fixing compound bacterial agent includes rhizobia, Azotobacter chrysophyllariae, Bacillus megaterium, and Azospirillum; the organic compound slow-release material includes organic fertilizer, wood flour, and fertilizer. This invention fully utilizes the large amount of mud cake generated in hydropower development and other projects, developing it into a substrate suitable for plant growth, especially providing a platform and carrier for plant growth on slopes, saving land resources, and possessing advantages such as high operability, low cost, and good ecological restoration effect.

A soil compactor comprises a head-up display (54) associated with at least one subsoil observation window (36), wherein the head-up display (54) is configured to display processing status information representing the processing status of the area (26) of the subsoil (24) lying in front of the soil compactor (10) in the direction of movement (B), wherein the processing status information comprises: - a perspective projection of passes (58, 58') already made or / and still to be made by the soil compactor (10) in the area (26) of the subsoil (24) lying in front of the soil compactor (10) in the direction of movement (B), or / and - a perspective projection of the area lying in front of the soil compactor (10) in the direction of movement (B). (26) of the subsoil to be compacted (24) with areas (62,62') different states of the subsoil to be compacted (24) differentiating representation.,

This invention discloses a rapid remediation isolation membrane and permeable blind pipe laying equipment and method for constructing topsoil-subsoil salt-cutting plots, relating to the field of saline-alkali land improvement. It pioneers a non-excavation in-situ membrane laying technology, integrating modules such as a disc plow (2), a serrated separating plow (3), a soil conveying system (4), an HDPE geomembrane laying mechanism (5), and a permeable blind pipe laying device (6). The disc plow (2) cuts and shapes the field ridges (9), and the serrated separating plow (3) separates the topsoil layer (10) and subsoil layer (11). An HDPE geomembrane (12) is simultaneously laid and vertically attached to the ridges to form a three-dimensional barrel-shaped salt-cutting structure. Permeable blind pipes (13) are laid simultaneously, and soil amendments are added during backfilling. This invention completely blocks saltwater migration, solving the problems of recurring and costly traditional treatment methods, creating conditions for residual salt management and biological improvement, and is suitable for rapid remediation and topsoil reconstruction of saline-alkali land.

Irrigation bag for irrigation of primarily fully-grown, mature and collection trees, which contains at least one non- pressurized filling opening (3) and / or at least one filling opening (4) with pressure filling fitting, and it also contains in the lower part simple openings (21) for discharging liquid and / or waterproof seams and / or dripper (22) and / or connecting piece (23) with dripping hose connection (24), and the volume of the bag is up to 4000 litres. Irrigation bag assembly, where at least one bag (1) contains at least one non-pressurized filling opening (3) and / or at least one filling opening (4) with pressure filling fitting, and the bags (1) are connected via a connecting hose (51) connected with openings (4) and / or connected with connecting elements (5). Tree irrigation method using bags or bag assembly where the bag (1) or bag assembly (1) is placed as close to the tree canopy dripline (103) at least partly on permeable subsoil (104).