100 results about "Subsoil" patented technology

The invention relates to an ion type rare earth ore tailing sandy land soil improvement structure and an improvement method, and belongs to the technical field of ecological restoration. The ion type rare earth ore tailing sandy land soil improvement structure sequentially comprises a humus layer, a surface soil layer and a subsoil layer. The subsoil layer comprises rare earth ore tailing sandy land soil and a slow-release modifier; the surface soil layer comprises the rare earth ore tailing sandy land soil, a slow-release modifier and a quick-acting modifier; the slow-release improver comprises agricultural and forestry wastes, and the quick-acting improver comprises livestock and poultry manure, lime and a compound fertilizer. According to ecological function characteristics of the soil, aiming at physical characteristics and nutrient content of the soil and specific rare earth and aluminum toxicity pollution of a mining area, the soil layer is remolded by using different dosages and different types of improvers, so that the restoration of a local damaged soil ecological system is accelerated, and the ecological function restoration of the soil in the rare earth ore tailing sand land is realized.

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.

The Coastal INTERBLOC Unit and the Coastal INTERBLOC Reinforced Medium Variable Geometry Variable Density Modular Revetment System, represent a flexible revetment system designed to: be vertical or sloping, incorporate one or several slopes, be straight or curvilinear; be constructed on competent or soft sub-soils; absorb wave energy by virtue of its high void porosity ratio; be installed using manual labor and light construction equipment; settle differentially without structural or functional distress; be transported cost efficiently in containers; be space efficient in transport; be scaled up or scaled down to suit the coastal energy environment; be theoretically analyzed through numerical modelling; and which can co-exist with any coastal riverine or reservoir environment and which can be adapted for installation in any variety of seabed or subsoil conditions.

Suction device for subsoil drilling rigs, comprising: a main body, having at least one internally hollow cylindrical body; a rotary actuator associated with the main body; a rotation shaft extending within the cylindrical body. The rotation shaft is interlocked with the rotary actuator and has an end portion axially protruding from the cylindrical body. The device further comprises a terminal element, mounted on the end portion of the rotation shaft and having a plurality of circumferential openings putting the inside of the cylindrical body in fluidic communication with the outside environment. The suction device further comprises a cleaning device. The cleaning device comprises a plurality of protrusions substantially integral with the cylindrical body; each protrusion extends into a respective one of said openings, thus cleaning such openings during a rotation of said terminal element.

A 3D printed structure is provided. The structure includes a composition formed from a mixture including an earth component, e.g., naturally occurring soil, subsoil, topsoil, clay, a clay-rich soil, sand, silt, an engineered soil formed of sand and clay, etc.; at least one fiber component, e.g., a bast or leaf fiber, including straw, wheat straw, rice straw, rice husk, reed, hay, hemp, kenaf, banana, sisal, fique, flax, jute, etc.; fluid component, e.g., water, oil, acid, etc.; and at least one additive component, e.g., a bio-based additive such as cellulose, a polypeptide such as gelatin, a polysaccharide such as alginate, guar gum, locust bean gum, chitosan, and xanthan gum, and lime, etc. The mixture includes a weight ratio of about 2-50 parts earth; about 5-50 parts fiber; about 25-80 parts fluid; and about 0-10 parts additive. The mixture can be 3D printed into prefabricated building elements, e.g., block-like geometries, monolithic walls, panels, etc.

The invention belongs to the field of soil dissolved organic matter analysis, and provides a multispectral-based DOM detection and reclamation influence evaluation method, which comprises the following steps: step 1, collecting dry farmland soil samples of different reclamation years, and obtaining soil column samples of a plough layer, a plow pan and subsoil; 2, extracting, centrifuging and filtering the soil sample to obtain a DOM solution; 3, detecting the DOM solution by adopting an ultraviolet-visible absorption spectrum; step 4, adopting a three-dimensional fluorescence spectrum and combining parallel factor analysis to obtain fluorescence components and source characteristics of the DOM solution; step 5, analyzing molecular composition and characteristic parameters of the DOM solution by adopting solid-phase extraction in combination with Fourier transform ion cyclotron resonance mass spectrometry; and step 6, based on the detection data in the steps 3-5, evaluating the influence of reclamation years on the composition, structure and degradation characteristics of the DOM. According to the method, multi-dimensional detection of soil DOM is realized through a multi-spectrum and mass spectrum combined technology, and DOM is comprehensively analyzed from a macrostructure to molecular composition.

The invention provides a preparation method of artificial oven subsoil. The preparation method comprises the following steps: firstly, mixing shrub ash, rice hull ash and wormwood ash in proportion to prepare plant ash, then mixing calcined and crushed oyster shells and plant ash, adding water, washing and removing impurities to prepare mortar, and then adding loess powder for injection molding; drying at the temperature of 250-350 DEG C, oxidizing at the temperature of 450-650 DEG C and reducing at the temperature of 750-850 DEG C to finally obtain the artificial oven subsoil. According to the method, the natural production process of traditional oven subsoil is simulated, the compound structure and effective component composition of the natural oven subsoil are successfully reproduced, the obtained product is stable in component and quality, the content of heavy metal and pesticide residues meets the safety standard, and the problems that natural resources are exhausted, and the quality of the oven subsoil all over the country is uneven are effectively solved.

The utility model provides a soft foundation embankment structure with an embankment body space integrated with a municipal function, which relates to the technical field of seawall structures, and comprises a suppression platform I, a seawall complex, a closed earthwork and a suppression platform II which are sequentially arranged from open sea to inland, the seawall complex comprises a pile foundation, a reinforced concrete raft plate arranged on the pile foundation and a reinforced concrete empty box dike body arranged on the reinforced concrete raft plate. A comprehensive pipe gallery space, a parking space, a patrol inspection and maintenance and driving channel and a driving entrance and exit for entering the patrol inspection and maintenance and driving channel are formed in the reinforced concrete empty box embankment body, and a drought gate is arranged at the entrance of the driving entrance and exit. The repression platforms in front of and behind the embankment body are implemented firstly, cement mixing piles and other composite foundation treatment methods are adopted for foundations below the platforms, the negative friction resistance effect, deformation and other adverse effects caused by soft soil foundations on pile foundations are greatly reduced, the mixing piles below the repression platforms on the inner side are densified to form frame supports, and the good shielding effect on later land area soil filling influences is achieved.

According to the soil in-situ reconstruction and soil improvement method suitable for the open-air grassland mining area, soil in the grassland mining area is reconstructed, the subsoil layer, the isolation layer and the reconstructed soil layer are sequentially arranged from bottom to top, the added clay isolation layer has the water and fertilizer retention effect, plant growth is facilitated, and the soil in-situ reconstruction and soil improvement effects are achieved. Sandy soil and clay are compounded to serve as a reconstructed soil layer, the used clay is high in organic matter content and can be bonded into micro aggregates and large aggregates, the soil texture is compact, soil particle gaps are small, and the water and fertilizer retention capacity is high. On the basis, the multi-dimensional soil improvement method is provided and comprises the steps of platform and slope soil reconstruction, platform soil fertility improvement and platform microtopography finishing, and the ecology of the grassland mining area can be effectively restored through the synergistic effect of the multi-dimensional improvement scheme.

Receptacle (1) for the detachable arrangement of a device (2) for improving, processing or changing the soil mechanical properties of soils, comprising at least one soil processing unit (3) on a carrier device (4), characterized in that the receptacle (1) for the detachable arrangement on the carrier device (4) has a compensating element (6) which is designed to ensure at least lateral mobility of the soil processing unit (3) relative to the carrier device (4).

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 present application relates to methods for compacting a subsoil. In order to develop an alternative method for compaction which eliminates the disadvantages of the prior art and which is at the same time characterized by a particularly simple implementation, the following method steps are proposed according to the invention: a. Erecting at least two building elements (2) on the building site (1), each building element (2) comprising at least one building block (3) cast from concrete. b. Connecting the components (2) to one another by means of at least one connecting element (4) to form a composite (5). c. Loading the subsoil (1) with the construction elements (2) for a specified period of time. d. Removal of the building elements (2) from the building ground (1), whereby the removal of the building elements (2) is carried out without leaving any residue and without destruction.

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 time-domain statistical analysis system for spatial anomalies intended for the detection and visualization of fluid movement zones in a geological subsurface. The system comprises an integer number M of sensors (2), said integer number M being greater than or equal to 3. The sensors (2) are configured to measure a wave (3) propagating through the geological subsurface over an observation period to obtain at least one measurement signal. The system also includes a controller configured to implement several processing steps for said measurement signal. The invention further relates to a method for detecting and visualizing fluid movement zones. The invention further relates to a computer program comprising program code instructions for executing the steps of said method. The program operates on a controller. Abstract figure: Fig. 1

The invention relates to a method for sizing a geothermal well for the thermal regulation of a building, including the steps of: —51: Modelling a geothermal potential of a zone of interest including a subsoil zone comprised within a given perimeter around the building; —S2: Estimating the thermal requirements of the building; —S3: Generating models of geothermal installations according to the results of 51 and S2, a model of a geothermal installation including one or more geothermal solutions configured to meet the requirements estimated in step S2 according to the zone of interest modelled in step 51; —S4: Applying a selection criterion which is configured to determine a preferred model.

The present invention discloses a method for inducing synchronous emergence of rice seeds. The method comprises: crushing and sieving a mixture of yellow mud, fermented cow dung, vermiculite, peat, and fermented biomass to obtain a main material, adding water to obtain a hydrated main material; fertilizing, acidifying, and adding a fungicide to the hydrated main material to form a breathable seedling-raising substrate; laying subsoil in seedling trays, covering with soil after sowing, watering thoroughly, and then stacking the seedling trays together; placing the seedling trays at a temperature of 30-32°C and a relative humidity of 90% or higher for emergence; and placing the seedling trays on a seedling board under constant temperature and humidity for emergence when the buds reach 0.5 cm in length. The present invention solves the problem of inconsistent emergence times during transplanting and raising rice seedlings in existing rice transplanting machines, resulting in uneven seedling heights and disease in the seedlings. The method of the present invention not only ensures rapid and uniform seedling emergence, but also provides a strong guarantee for cultivating strong seedlings and increasing production and efficiency.

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.

1. Device (10) for vibration-free deep foundations of foundations for noise and visual protection structures. 1.1. A device (10) for vibration-free deep foundations of building foundations, in particular for noise and visual protection structures, comprising a cylindrical steel tube serving as a foundation tube (11) for 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 spaced therefrom, wherein a cutting mechanism (26) is arranged at the first free open end (12) such that soil material can be guided into the foundation tube (11) and removed at the second free open end (13), thereby substantially maintaining the original bulk density of the in situ subsoil surrounding the foundation tube (11), and the cutting mechanism (26) comprises at least two cutting plates (14, 15, 21, 22) arranged radially outwardly on the outer circumference of the steel tube,which have ends that are angled relative to the axis of the foundation pipe (11) and arranged at a distance from one another. 1.2. Method for vibration-free deep foundations of foundations for noise and visual protection structures with the device (10) for vibration-free deep foundations of foundations for noise and visual protection structures.

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.

A two-row self-supporting earth retaining wall structure includes an upper displacement restraining tea structure and an excavated subsoil passive resistance block body. Piles having a two-row structure, waling members, and guide brackets, which are improved in shape, may be used to directly apply tension to the rear waling member and the front waling members, thereby improving bearing capacity of the waling members due to an earth pressure of backfill soil and improving stability of the two-row self-supporting earth retaining temporary structure. In addition, since the front pile is disposed to be spaced a predetermined distance from the rear pile, the gravity retaining wall may be provided between the front pile and the rear pile, and the gravity retaining wall may further improve the stability of the two-row self-supporting earth retaining temporary facility while supporting the backfill earth pressure between the front piles and the rear piles.

The present application relates to methods for compacting a subsoil. In order to develop an alternative method for compaction which eliminates the disadvantages of the prior art and which is at the same time characterized by a particularly simple implementation, the following method steps are proposed according to the invention: a. Erecting at least two building elements (2) on the building site (1), each building element (2) comprising at least one building block (3) cast from concrete. b. Connecting the components (2) to one another by means of at least one connecting element (4) to form a composite (5). c. Loading the subsoil (1) with the construction elements (2) for a specified period of time. d. Removal of the building elements (2) from the building ground (1), whereby the removal of the building elements (2) is carried out without leaving any residue and without destruction.

The invention provides a pre-stressed anchor cable cable-stayed retaining wall and a construction method thereof, reinforced concrete walls are poured layer by layer from bottom to top according to the trend of a foundation pit slope, and in the pouring process, sleeves are pre-buried in concrete; and when the reinforced concrete wall body reaches the preset strength, one end of the pre-stressed anchor cable is inserted into the reserved casing pipe and extends to the side slope soil layer or the foundation pit subsoil layer, the other end of the pre-stressed anchor cable is connected with the fixed waist beam, and construction of the pre-stressed anchor cable cable-stayed retaining wall is completed. According to the pre-stressed anchor cable cable-stayed retaining wall and the construction method thereof, operation is convenient, the speed is high, compared with a traditional gravity retaining wall, the pre-stressed anchor cable cable-stayed retaining wall is more economical, concrete is saved, and particularly when anchor rods or soil nails are not arranged on the periphery of a side slope for construction and soil texture below a base is good, a base rock layer can be fully used as a bearing layer to achieve the soil retaining effect.

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.

The Coastal INTERBLOC Unit and the Coastal INTERBLOC Reinforced Medium Variable Geometry Variable Density Modular Revetment System, represent a flexible revetment system designed to: be vertical or sloping, incorporate one or several slopes, be straight or curvilinear; be constructed on competent or soft sub-soils; absorb wave energy by virtue of its high void porosity ratio; be installed using manual labor and light construction equipment; settle differentially without structural or functional distress; be transported cost efficiently in containers; be space efficient in transport; be scaled up or scaled down to suit the coastal energy environment; be theoretically analyzed through numerical modelling; and which can co-exist with any coastal riverine or reservoir environment and which can be adapted for installation in any variety of seabed or subsoil conditions.

A planting method for rhizome plants in the buffer zone of lakes and reservoirs, which relates to the technical field of ecosystem construction, specifically to the technical field of ecosystem construction in the buffer zone of lakes and reservoirs. The present invention solves the problems of poor recovery ability of rhizome plants and low interception efficiency of non-point source pollution during the restoration of the existing buffer zone of lakes and reservoirs. The planting method described in the present invention includes: digging multiple mutually parallel planting trenches with a depth of 30 cm along the contour line on the shoreline at the edge of the lake or reservoir; longitudinally laying a layer of corn straw at the bottom of each planting trench, 10 cm above the bottom of the trench, and 20 cm above the bottom of the trench in sequence; backfilling the subsoil between adjacent layers of corn straw; backfilling the topsoil with a thickness of 5 cm above the uppermost layer of corn straw, then evenly laying multiple plant rhizomes, and then backfilling the planting trench with topsoil to cover the rhizomes to complete the planting. The planting method for rhizome plants in the buffer zone of lakes and reservoirs has a wide application prospect in the fields of environmental protection, ecological restoration and landscape construction of lakes and reservoirs.

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.

The utility model discloses a waterproof art retaining wall which mainly comprises a foundation raft plate, a concrete wall body, an inclined strut structure and a tie bar. The foundation raft plate is poured on a hard stratum, the concrete wall body is poured on the foundation raft plate, and a high soil layer and a subsoil layer are arranged on the two sides of the wall body respectively. The inclined strut structure, the foundation raft plate and the concrete wall body are integrally poured, and the inclined strut is arranged on one side of the subsoil layer and buried under the subsoil layer in a covering mode. The fixed section of the tie bar is fixed in a concrete wall body, the extending section of the tie bar is obliquely and downwards buried in a high soil layer, and the fixed section is fixedly connected with a buckling piece. The waterproof layer is arranged between the concrete wall body and the high soil layer, so that water permeation is effectively prevented. And the decorative plate is fixed on the wall body through the fastener and is arranged on one side of the subsoil layer, so that the appearance is improved. The waterproof art retaining wall is suitable for complex terrains and high soil layer environments, and has high adaptability, stability and a good visual effect.

The invention relates to a monopile for an offshore foundation, wherein the monopile is configured for insertion into a subsoil in a vertical insert direction, wherein the monopile has a circumferential wall defining an internal monopile chamber therein, and a driving shoe having a distal end that forms an entry towards the internal monopile chamber, wherein the distal end of the monopile enters the subsoil first, wherein the monopile comprises a soil resistance compensator that is configured to distribute soil resistance on the monopile during insertion thereof into the subsoil, wherein the soil resistance compensator comprises a soil resistor that is arranged on the circumferential wall at a predetermined height from the distal end in the insert direction.