470 results about "Clay soil" patented technology

To provide a deep well filtering structure that effectively prevents the subsidence and collapse of the well wall. [Solution] The deep well filtration structure of this invention includes a surface loess layer 1 and a well channel 7, with a concrete well side 8 poured onto the surface of the surface loess layer, a reinforced concrete permeable pipe and a reinforced concrete solid pipe 10 installed in sequence inside the well channel, a well pipe pallet 6 placed at the bottom end of the well channel, and below the surface loess layer, in sequence, a gravel-mixed loess layer 2, a gravel layer 3, a crushed stone-mixed loess layer 4 and an underground loess layer 5, and a clay ball-filled sealing layer 9 filled between the surface loess layer, the gravel-mixed loess layer and the reinforced concrete solid pipe.

The invention belongs to the technical field of oil field drilling, and particularly relates to a preparation method of modified sulfonated phenolic resin for drilling fluid, and the modified sulfonated phenolic resin is prepared by chemically bonding a functional monomer simultaneously containing sulfonic acid anions and quaternary ammonium cations in a phenolic resin structure in a free radical polymerization mode. The quaternary ammonium cation group adsorbs negatively-charged clay particles, the adamantyl group can be adsorbed in hydrophobic areas of the clay particles through association, and the sulfonated phenolic resin can be quickly adsorbed on the surface of the clay in a double adsorption mode of hydrogen bonds and electrostatic attraction. Besides, a large number of sulfonic acid anions can form a compact solvation layer after hydration, and a compact coating film can be formed when phenolic resin is quickly adsorbed on the surface of clay, so that the clay is prevented from being in contact with water, the stability of clay particles is realized, a compact mud cake can be formed, and the prepared phenolic resin has good filtrate loss reduction performance.

Systems and methods for determining a diagenesis level in a reservoir for performing hydrocarbon extraction include receiving a set of open hole (OH) log data from one or more wells in the reservoir, the OH log data representing a subsurface of the reservoir; executing a diagenesis model to process the set of OH log data, the diagenesis model trained by thin-section image data correlated to labeled OH log data, the labeling identifying values for a quartz overgrowth rate (QOR), a clay coating rate (CCR), or a thin-section porosity in the subsurface based on a value in the OH log data; determining a prediction of a porosity of the reservoir, a permeability of the reservoir, or both the porosity and the permeability; and generating a control signal representing a recommendation to drill a well at a location in the reservoir.

The invention discloses a Chinese wolfberry seedling raising method for improving paddy field soil, which comprises the following specific steps: collecting cutting slips: collecting branches with the diameter of more than 0.3 cm, cutting the branches into cutting slips with the length of 12-15 cm, and reserving 2-3 tender shoots on each cutting slip without damage; rooting liquid treatment: preparing a rooting liquid, and soaking the positions 3-5 cm above the bottom ends of the cutting slips in the rooting liquid for 12-24 hours; the rooting liquid is mainly prepared from rice vinegar and brown sugar; temperature-controlled root promoting: controlling the environment temperature to be 15-25 DEG C, and vertically inserting the cutting slips treated by the rooting liquid into the seedling raising container; the seedling raising container is filled with improved paddy field soil in advance; when 1-2 tender shoots newly grow on the cutting slips and 7-8 tender leaves grow on the cutting slips, shoot tips are removed, so that the tender shoots on the cutting slips are converted into semi-lignified from fleshy, apical dominance is inhibited, rooting is promoted, and seedling raising is continued; when new buds grow out again, seedling raising is completed, and the seedlings are transplanted to a field for planting. The lycium barbarum seedling raising method has the advantages of being low in cost, environmentally friendly, high in survival rate, suitable for improved paddy field soil and the like.

The invention provides a shale fracture attribute inversion method based on clay matrix dominant azimuth distribution correction, which utilizes an azimuth distribution function to describe the influence of directional arrangement of a clay matrix part on rock anisotropy, and meanwhile, utilizes an improved anisotropic matrix Eshelby-Cheng model to simulate the influence of a horizontal fracture. According to the method, a shale rock physical model considering directional arrangement and horizontal cracks of a clay matrix part at the same time is constructed, shale reservoir crack attributes and anisotropy parameters are estimated in combination with logging information, and in the inversion process, a simulated annealing particle swarm optimization (SA-PSO) is used for improving the solving capacity of a non-linear objective function. According to the method, the influence of anisotropy caused by directional arrangement of the clay matrix on fracture attribute inversion can be reduced, the accuracy of shale reservoir fracture attribute estimation and anisotropy parameter inversion is improved, and development of a shale gas resource exploration and development technology is assisted.

The invention relates to a water and land construction rapid filling method suitable for a cofferdam with cohesive soil at a soil taking point. The water and land construction rapid filling method comprises the following steps of A, underwater throwing filling, B, overwater turning filling and C, land filling of a dam core. Water throwing and land throwing are combined, cofferdam forming is accelerated, inland river conventional equipment is adopted for overwater construction, construction organization is facilitated, adopted dredgers are backhoe dredgers and grab dredgers which are commonly used for earth cutting in inland rivers, and the ships are shallow in draught, convenient to transport in the inland rivers, free of weather influence, capable of working continuously, capable of saving the construction period, capable of reducing soil disturbance and convenient to throw and fill water. The overall stability of the cofferdam can be improved, earthwork balance is achieved, cost is saved, environment friendliness is achieved, and good social and economic benefits are achieved.

The invention provides a coastal area foundation pit dewatering system and method, and belongs to the technical field of foundation pit dewatering, the coastal area foundation pit dewatering system comprises a foundation pit, a plurality of light well points, a deep tube well and an electroosmosis auxiliary module, and the light well points are annularly arranged in a shallow layer area on the periphery of the foundation pit; the deep tube well extends to a deep area from the ground; and a plurality of electro-osmosis auxiliary modules are arranged in the peripheral clay layer area of the foundation pit. The annularly-arranged light well points evenly intercept shallow underground water around the foundation pit, the deep pipe wells can rapidly reduce the deep underground water level, and the drainage problem of a low-permeability clay layer area is effectively solved through the synergistic effect of the arranged electro-osmosis auxiliary modules and the well points / pipe wells; the synchronous precipitation uniformity of the complex soil layer is improved, layered targeted precipitation design is adopted in a shallow area, a deep area and a clay layer area, and the overall precipitation efficiency is improved. According to the foundation pit dewatering system in the coastal area, the problem that in the prior art, in the environment with complex hydrogeological conditions, the dewatering efficiency of a single dewatering measure is low is solved.

The invention provides nano-modified clay compounded hollow micro-powder and a preparation method thereof. The nano-modified clay compounded hollow micro-powder comprises the following components in percentage by mass: 55%-68% of nano-modified clay, 32%-45% of hollow micro-powder, 0.8%-4% of a functional aid and 0.1%-2% of a coupling enhancer, wherein the nano modified clay is obtained by performing dual modification treatment on natural clay, and the dual modification comprises the following steps: performing intercalation modification, adopting a composite modifier of a silane coupling agent and a titanate coupling agent, and stirring and reacting for 3-6 hours at 60-85 DEG C, the total dosage of the modifier is 3-8% of the mass of the clay; on the basis of intercalation modification, an acrylic monomer is introduced for free radical graft polymerization, and the grafting rate is 5-15%. According to the invention, through gradient compounding of the nano modified clay and the core-shell hollow micro-powder and the synergistic effect of intercalation modification and surface grafting modification, the interlayer spacing of the clay is enlarged to 1.85 nm or more, the specific surface area is increased to 120 m < 2 > / kg, and the interface bonding force with a polymer matrix is significantly enhanced.

The present invention relates to a composition comprising a plurality of clay nanoparticles, each clay nanoparticle comprising an anionic component and a cationic component, the anionic component having the formula (I): [(Si8Mg b Li c )O 20 (OH)4](I), where 5.5 < b ≦ 6, and where c > 0 and b / c > 12.

Disclosed is use of a compound of formula (I) to determine the quantity of clay in a sand and / or to determine the amount of CMA compound to be added to a hydraulic binder composition using a sand:R1—(OA)n—XR2  (I)where: R1 is a linear or branched C1 to C4 alkyl groups, or a coloured compound; R2 is a coloured compound; A, each the same or different, are independently a —CH2—CH2— group or —CH(CH3)—CH2— group; n is an integer of between 1 and 500, preferably between 4 and 250; and X is O or NH.

Systems and methods for clay composite based construction are disclosed. The system includes control towers spaced apart and surrounding a build area. The system includes a carriage having build tools suspended over the build area by cables attached to, and supported by, the control towers. The build tools include a claw for picking-up clay composite materials from the build area, transporting the clay composite materials, and placing clay composite materials onto the build area, and a hammer for sculpting the clay composite materials placed onto the build area. The system includes a processing module connected to the control towers, the processing module controlling the operation of the carriage to form clay composited based structures.

This utility model provides a structure for converting a clay core dam into an overflow dam, including a spillway excavated along the top of the clay core dam to the bottom of the downstream side. A spillway bottom slab is poured below the spillway, and side walls are poured on both sides of the spillway bottom slab. The height of the side walls is not lower than that of the clay core dam on both sides. An overflow weir is poured on the spillway bottom slab, and the overflow weir is located in the direction of the top of the clay core dam. The two sides of the overflow weir are connected to the side walls, and the height of the overflow weir is lower than that of the clay core dam on both sides. An anti-seepage wall is embedded in the clay core dam below the overflow weir. The overflow dam is converted on the clay core dam to ensure that the converted clay core dam has a certain discharge capacity, thereby enhancing the flood control capacity of the reservoir.

The application discloses a quaternary solid waste-based soil stabilizer (GSCP) for a base layer, which is composed of slag (GGBFS), steel slag (SSA), calcium carbide slag (CS) and phosphogypsum (PG) and has a weight ratio of GGBFS:SSA:CS:PG=56:24:12:8. The stabilizer forms C-S-H colloid and ettringite (AFt) through alkaline activation and sulfate activation, does not need to add cement or chemical activator, is used for stabilizing silty clay and steel slag mixed soil, and significantly improves the unconfined compressive strength, splitting tensile strength, water stability and freeze-thaw resistance. Compared with a traditional cement-based stabilizer, the application reduces carbon emission by 82% and cost by 31.25%, provides a low-carbon and economical solution for road engineering, and is suitable for the base layer and the subbase layer of a secondary road or above.

The present invention relates to a method for obtaining amorphous iron in the form of volumetric samples of varying porosity by sintering compacted mixtures of Fe₂O₃ and RLA in airtight steel capsules placed in a furnace at a pressure of 10⁻¹ × 10⁻² mm Hg. The sintering process and subsequent slow cooling of the samples were carried out according to standard powder sintering techniques used in powder metallurgy. The reduction of Fe₂O₃ to Fe is achieved by the decomposition products of the RLA biocomponent to C and CO. The stabilization of the amorphous state of the iron is achieved through the presence of impurities in the form of clay and sand (approximately 10⁻²⁰ wt%) in the RLA. The products of the complete reduction of the clay and sand lead to the formation of Si-Al-C coatings on the surface of the resulting Fe particles.Residual accumulations of SiO2, Al2O3, and C between the iron particles also prevent complete melting / expansion of the iron particles and their transition to the crystalline state. Optimal conditions for amorphous iron formation were found to occur at a mixing ratio of (40-60) wt% Fe2O3 to (60-40) wt% RLA, a processing temperature of 1000 °C, and a processing time of 1-5 hours.

The invention relates to the technical field of oil and gas reservoir damage evaluation, in particular to a method and device for calculating irreducible water saturation of a tight sandstone reservoir, electronic equipment, a storable medium and a computer program product. The method comprises the following steps: acquiring a pore distribution curve of a compact sandstone sample; based on the pore distribution curve of the compact sandstone sample, determining the capillary bound water content of different pressure differences of the compact sandstone reservoir; carrying out total rock and clay mineral analysis on the compact sandstone sample to obtain the content of the clay bound water in the compact sandstone reservoir; and obtaining the irreducible water saturation of the tight sandstone reservoir based on the capillary irreducible water content and the clay irreducible water content. According to the method, the relationship between the absolute content, the pore distribution, the stress distribution and the interfacial tension of the clay mineral and the irreducible water saturation is established, so that qualitative and quantitative analysis on the irreducible water saturation is quickly and accurately performed.

The invention discloses a soft clay cyclic reconsolidation characteristic test method and device, and the method mainly comprises the steps: applying an axial cyclic load, and dynamically adjusting the lateral boundary constraint condition of a sample according to an independent control logic to simulate an actual stress path; synchronously collecting axial deformation, a lateral strain field, pore water pressure and an acoustic emission signal of the sample; and then characteristic parameters are calculated in real time based on the multi-physics field data, and a test process is automatically decided according to a preset criterion. According to the soft clay cyclic reconsolidation characteristic test method and device provided by the invention, the field boundary condition can be simulated more truly, and multidimensional state monitoring and intelligent test control from macroscopic to microscopic can be realized.

The utility model relates to the field of building construction, in particular to an underground water pressure relief device transformed by utilizing a foundation pit drainage well, which comprises a well body, a clay sealing layer and a waterproof coiled material, the well body, the clay sealing layer and a filter material form a dewatering well arranged before foundation pit construction, the waterproof coiled material and a water stop steel plate are arranged in a bottom plate interval of the well body, and the water stop steel plate is arranged in the bottom plate interval of the well body. And a pressure relief device is mounted at the top of the well body. The underground water pressure of the area is determined by observing the water pressure gauge, the drainage opening valve is opened when the design value is reached, the underground water is drained through the water pressure effect, the damage such as bottom plate upheaval caused by continuous rising of the water pressure is avoided, the drainage opening valve is closed after pressure relief is completed, the water pressure is monitored and released in real time through the device, and high practicability is achieved.

The invention relates to the technical field of irrigation and water conservancy engineering, and discloses a karst mountainous area water retention and stabilization zoned ridge construction method and a ridge, and the method comprises the following steps: S1, digging a foundation trench along a ridge line of a pre-built upper terrace; s2, a load-bearing outer slope body surrounding the upper terrace is built in the foundation trench, and a through drainage hole is formed in at least one lateral section of the load-bearing outer slope body; s3, laying an inverted filter layer on the inner side of the bearing outer slope body; s4, the inner side of the inverted filter layer is filled and tamped with clayed soil in a layered mode, and an anti-seepage soil core wall is formed; s5, the bottom of the foundation trench in the area defined by the anti-seepage soil core wall is backfilled with planting soil; according to the construction method of the zoned ridge for water retention and stabilization in the karst mountainous area and the ridge, the series of problems that the ridge in the karst mountainous area cannot be stabilized, cannot be stored and cannot be drained smoothly are solved, and structural stability, efficient moisture retention and smooth drainage of the ridge in the karst mountainous area under complex hydrogeological conditions are achieved.

The application discloses a single-row tooth rake head suitable for digging clay, a dredger and a method, and belongs to the technical field of dredgers. The single-row tooth rake head suitable for digging clay comprises a rake body, further comprises: a movable cover which is hingedly arranged on the front side of the rake body and is provided with a hydraulic oil cylinder between the movable cover and the rake body; a water flushing assembly which is arranged on the rake body and is used for cutting and flushing clay; a grid assembly which comprises a first grid and a second grid, the first grid is arranged on the rake body, and the second grid is arranged in the movable cover and is used for intercepting large pieces of clay; and a single-row rake tooth which is fixedly arranged at the front end of the movable cover through a tooth seat and is used for cutting into and crushing clay. The single-row rake tooth can effectively crush the clay layer, effectively avoid clay adhesion, reduce downtime, is suitable for clay digging operation scenes such as channel dredging and water conservancy engineering, and can effectively improve the clay digging efficiency and effect.

A system (100) for processing sand product includes a process tank (104) having a first compartment (104a), a second compartment (104b) in fluid communication with the first compartment (104a), and a third compartment (104c) isolated from the other compartments. The system (100) also includes a first hydrocyclone (116) that receives a sand mixture comprising the sand product and water from the first compartment (104a), and separate the sand mixture into wet sand and a clay mixture. The second compartment (104b) receives the wet sand and clay mixture from the first hydrocyclone (116). A second hydrocyclone (120) receives the wet sand and the clay mixture from the second compartment (104b), and further separates the wet sand from the clay mixture to produce a clay product that includes a fully hydrated clay material. The third compartment (104c) receives the clay product from the second hydrocyclone (120)

This process for the recovery of rare earths contained in ionic clays implements the leaching of said clays according to a continuous loop: in which said leaching is initiated by contacting fresh ionic clay with an aqueous leaching solution S1 comprising a dissolved salt of M1 / zCl or M2 / zSO4, where M is a cation chosen from the group consisting of Na+, NH4+ and Mg2+; and z = 1 or 2, representing the number of charges of the cation M, generating on the one hand, a leachate or aqueous solution S2 comprising rare earth cations and actinium, and on the other hand, a leached or exhausted clay; then in which, said solution S2 is subjected to a phase of extraction of the valued rare earths, generating on the one hand, an organic solution S3 or a solid S3 comprising the valued rare earths, and on the other hand a raffinate R comprising the salt of M1 / zCl or of M2 / zSO4, actinium in cationic form, and the non-valued rare earths;The raffinate R is brought into contact with a quantity of fresh ionic clay, forming a new solution S2; said new solution S2 is then subjected to a new phase of extraction of the valuable rare earths, generating a new raffinate R; the leaching solution constituted by the raffinate R resulting from the successive phases of extraction of the valuable rare earths, continuously circulating in connection with new quantities of fresh ionic clay. Figure 1;

Soluble metal ions contained in clay and loam can migrate to the surface with the moisture present in the clay building materials and react there with oxygen. This can lead to the formation of manganese dioxide and thus to discoloration of the building material surface. This reaction can be reversed using reducing agents such as HDEP and hydrogen peroxide and effectively prevented by the use of chelating agents such as HEDP or citric acid.

The application provides a design method of a road subsidence support steel pipe pile based on a pressure rod stability theory, comprising: a data measurement step, which obtains the following road data by measurement: road width, weight, road surface uniform load of a subsidence road, thickness of a silty clay layer, outer diameter and inner diameter of the steel pipe pile, and determines the width of the subsidence road which needs to be reinforced and supported; a first stress analysis step, which performs stress analysis on the subsidence road, establishes a vertical balance force equation of the subsidence road and a bending moment balance equation of the subsidence road; a second stress analysis step, which performs stress analysis on a single steel pipe pile anchor body, establishes a vertical force balance equation of the steel pipe pile, and obtains a critical vertical pressure value of the steel pipe pile; and according to the vertical balance force equation of the subsidence road, the bending moment balance equation of the subsidence road, the vertical force balance equation of the steel pipe pile, and the critical vertical pressure value of the steel pipe pile, the minimum arrangement number of the steel pipe pile is calculated, the liquefied land can be locally reinforced, and the overall stability of the liquefied land is improved.

An agricultural particulate blend includes a plurality of porous, calcined clay particles having more than 50% of the particles by weight corresponding to sieve sizes 6-30 and a plurality of control release fertilizer particles in an amount of 75-99.5 wt. %, based on a total weight of the blend, the blend being a substantially homogenous blend such that the plurality of porous, calcined clay particles and the plurality of control release fertilizer particles have substantially a same size, shape, or both.

The present application relates to the technical field of building materials, especially to the field of IPC C04B 33, and more particularly to a light high-strength building ceramic large plate and a preparation method thereof. The components of the ceramic large plate include: coal gangue 30-60 wt%, fly ash 10-20 wt%, clay 10-30 wt%, and a sintering aid to make up the balance. The fineness of the coal gangue is 20-300 mesh, and the proportion of particles with a size of more than 100 mesh in the coal gangue is not less than 40%, which can improve the compressive strength of the material. The weight ratio of the coal gangue, fly ash and clay is (40-60):(10-20):(15-25), which can effectively reduce the density of the material and improve the thermal shock resistance at the same time. The sintering temperature is 1230-1300 DEG C, which can reduce the density of the product and also improve the thermal insulation performance of the product.

The invention relates to the technical field of soil turning devices, in particular to a soil turning device suitable for land reclamation, which comprises a frame, a central transmission case and a rotary soil turning cutter shaft, the central transmission case is connected with a power output shaft of a tractor, and the frame is fixedly connected with the central transmission case. Through the arrangement of components such as the connecting and smashing mechanism and the power transmission and matching relation between the rotary soil turning cutter shaft and all the components, the connecting and smashing mechanism can drive the shearing roller to forcibly roll and shear soil blocks which are turned up preliminarily by means of the rotating power of the rotary soil turning cutter shaft; the spiral conveying blade is used for pushing soil blocks to axially move and uniformly shear the soil blocks, so that the effect that the device can finish soil deep scarification and efficient secondary crushing in one-time operation is achieved, and the fine crushing degree and uniformity of the soil are remarkably improved; the problems that a traditional soil turning device is prone to generating large-particle-size soil blocks in slightly dry or heavy soil, and the earth surface flatness is poor are solved.

The application discloses a clay storage box, which comprises a box body and a cover body, wherein the box body and the cover body are rotationally connected; the box body is used for storing clay; the cover body can be opened or closed to the box body through rotation; a locking mechanism is arranged on the box body; a lock catch matched with the locking mechanism is arranged on the cover body; an elastic member is arranged between the cover body and the box body; and the elastic member is used for rotating the cover body to open the box body. When the cover body is pressed to rotate and close to the box body, the lock catch and the locking mechanism are connected and locked under the action of the pressing force. When the cover body is pressed again, the lock catch and the locking mechanism are connected and unlocked under the action of the pressing force. The cover body is rotated to open the box body under the action of the elastic member. A user only needs to press to realize the locking and unlocking of the cover body, and the operation is labor-saving, and the use experience is better.

The invention discloses a rapid pile repairing method for a broken pile. The method comprises the following steps that the position and size of a fault of a pile body of a cast-in-place pile are determined through a sound wave transmission method; firstly, a hole with the diameter of about 1500 mm is manually excavated to the position 1-2 m away from the section of the broken pile; then chiseling the upper broken pile, cleaning a hole, and fixing the hole position by using a wood mold; a reinforcement cage is installed in a hole position for fixing the wood pattern, and concrete pouring is conducted; and after hole site core grouting is completed, concrete of the upper pile splicing part is constructed. The method is short in construction period and can be effectively suitable for broken pile treatment of mucky clay, and the strength of the section of the broken pile is higher.