54results about How to "Good development and application prospects" patented technology

The invention relates to a standardized design construction method of a flexible compound fabricated recoverable rectangular working well supporting structure. The method comprises the following stepsthat (1) construction of minisize supporting piles is carried out; (2) construction of pile top crown beams; (3) a rectangular working well is excavated, panels and waist beams are installed, and high polymers are poured to side walls for sealing; (4) excavation is carried out layer by layer sequentially in the vertical direction, and the step (3) is carried out repeatedly till the design depth is met, that is, construction of the rectangular working well supporting structure is completed accordingly; and (5) after the supporting structure fulfills the usage function, the supporting structurerecovery work can be carried out as the backfilling work is started. Through standardized design construction of the established supporting structure system, one supporting structure can meet the construction requirement of most rectangular working wells in a region, the advantages of safety, reliability, quick and convenient construction, advanced technologies, high recoverability, superior economic indicators and the like are achieved, and the application and development prospects are considerable.

The invention discloses a fluorocarbon modified styrene-acrylic coating. The fluorocarbon modified styrene-acrylic coating consists of the following components in percentage by mass: 34 to 42.5 percent of GHT-1 styrene-acrylic emulsion, 5.2 to 6.5 percent of GHSF-25 fluorocarbon emulsion, 0.4 to 0.5 percent of gamma-aminopropyltriethoxysilan, 0.4 to 0.5 percent of polyethylene glycol phenyl ether, 18 to 22 percent of rutile type titanium dioxide, 8 to 10 percent of talcpowder, 8 to 10 percent of mica powder, 8 to 11 percent of calcite in powder, 0.1 to 0.15 percent of hydroxy silicone oil modified polyacrylate, 0.01 to 0.02 percent of polyether modified polysiloxane, 0.01 to 0.02 percent of kazon and the balance of water. A preparation method comprises the following steps of: modifying the styrene-acrylic emulsion by using the fluorocarbon emulsion, the gamma-aminopropyltriethoxysilan, and the polyethylene glycol phenyl ether at the temperature of between 76 and 80 DEG C, and preparing by using the modified fluorocarbon modified styrene-acrylic emulsion to obtain the fluorocarbon modified styrene-acrylic coating. The preparation process is simple, and low in investment and cost; and a product has the advantages of high weather fastness, chemical resistance, and water resistance, scrubbing resistance, and artificial aging resistance.

The invention discloses a refrigerating method for using hydrate as working medium and relative air conditioner. Said method comprises: generating high-pressure gas; generating gas hydrate; the slurry hydrate via the expand valve is depressurized to be fed to the decompose reactor (evaporator); the hydrate is decomposed into gas and water to adsorb heat; the gas and water are separated in gas-liquid separator to be fed to the compressor or generate reactor (condenser) to complete the cycle. Said air conditioner comprises a decompose reactor (evaporator), a expand valve, a compressor, a generate reactor (condenser), a water pump, and a gas-liquid separator connected to the valve via tubes, while the tube is filled with hydrate refrigerating working medium; the decompose reactor (evaporator) is connected to the cold end; the generate reactor (condenser) is connected to the hot end to discharge heat outside the room. The invention can save energy with high efficiency and wider application.

The invention aims to provide a high-pressure resistant lamella heat exchanger adopting round corrugated plates, which includes a shell, cover plates, a corrugated plate lathed bundle, flow guiding blocks and support plates, wherein the corrugated plate lathed bundle includes corrugated plates and is fixed in the shell through the support plates; the two ends of the shell are sealed by the cover plates; a shell side outlet and a shell side inlet are arranged in the shell; a plate side inlet and a plate side outlet are arranged in the cover plates; an annular zone between the shell and the corrugated plate lathed bundle is divided into a shell side inlet chamber and a shell side outlet chamber through the flow guiding blocks; the shell side inlet is communicated with the shell side inlet chamber; the shell side outlet is communicated with the shell side outlet chamber; angular holes are formed in the corrugated plate lathed bundle; and the plate side inlet is communicated with the plate side outlet through the angular holes in the corrugated plate lathed bundle. The high-pressure resistant lamella heat exchanger provided by the invention has the advantages of high pressure bearing capability, high heat exchange efficiency, compact structure, big heat transfer area in a unit volume, wide material selection range, wide application range, as well as simplicity in processing and installation.

The invention relates to a HA-targeted layered doubled hydroxide-ultrafine iron nano material and preparation and applications thereof. The preparation is as follows: synthesizing an LDH-Fe3O4 nano composite material by a coprecipitation method; covalently bonding activated hyaluronic acid on the surface of an LDH laminate through a silane coupling agent; and finally, carrying out surface loadingof an anticancer drug. The nano-material particles are uniformly distributed, and can enhance the MR imaging effect of the tumor part in an animal body. The LDH-Fe3O4-HA NPs is used as a carrier of ananticancer drug doxorubicin DOX, not only has sensitive pH response and release characteristics, but also can carry out specific recognition on tumor cells expressed by CD44 receptors so as to achieve the idealization effect of efficiently inhibiting tumors.

The invention provides a preparation method of a high-performance ultra-large and ultra-thick carbon/carbon composite material. The preparation method comprises the following steps: A, preparing a carbon fiber preform; B, performing primary graphitization treatment on the carbon fiber preform to obtain a carbon fiber blank; C, carrying out CVD densification treatment on the carbon fiber green body to obtain a CVD green body; D, carrying out secondary graphitization treatment on the CVD green body to obtain a graphitized green body; E, sequentially carrying out dipping curing treatment, carbonization treatment, high-temperature heat treatment and machining treatment on the graphitized green body; F, repeating the step E until the density of the graphitized green body reaches a target value to obtain a primary finished product; and G, performing finish machining on the primary finished product, and obtaining a finished product. The product prepared by the method is high in percent of pass and excellent in performance, and batch preparation of the high-performance ultra-large and ultra-thick carbon/carbon composite material can be realized.

The invention relates to a design and construction method for a flexible composite, seepage-proofing, fabricated and recyclable row pile supporting structure with a circular cross section. The design and construction method comprises the following steps: (1) constructing row piles with circular cross sections; (2) installing section steel top beams; (3) installing steel panels and performing post-grouting on the steel panels; (4) excavating in layers and sections sequentially in the vertical direction; (5) repeating the steps (3) and (4), and constructing up to the design depth; and (6) performing recycling step by step along with pit backfill after the supporting structure completes the using function. The flexible composite, seepage-proofing, fabricated and recyclable row pile supporting structure with the circular cross section constructed by adopting the design and construction method has the advantages that high safety and reliability are achieved, the construction is fast, the technology is advanced, high recyclability and reusability are achieved and the comprehensive economy and environmental protection indexes are superior, is a new method with advanced technology, high safety and reliability, high recyclability and reusability and superior comprehensive economy and environmental protection indexes for excavation and support of projects such as foundation pits, side slopes, subway stations, municipal pipelines and the like, and further has a considerable development and application prospect.

The invention provides a permanent circular working well with a preset pipe-jacking door opening in a water-rich formation and a construction method of the permanent circular working well. The construction method specifically includes the following steps that (1) functional requirements of the circular working well are designed; (2) open caisson construction of a maintenance structure of the circular working well is conducted; (3) temporary border protection construction is conducted; (4) downhole earthwork is excavated; (5) the bottom of the circular working well is sealed; (6)a crawling ladder for entering the circular working well is mounted; (7) joint leakage is treated; (8) a wellhead water stopping pressing plate is mounted; (9) a sandwich concrete board wall at the top of the presetdoor opening is lifted; (10) jacking construction of pipe-jacking is conducted; (11) communication of downhole pipelines, mounting of valves and related work are implemented, checked and accepted; and (12) the temporary border protection is removed, the top of the circular working well is covered with a plate, a inspection well is mounted, and waterproof construction is conducted. According to the permanent circular working well and the construction method, a constructed structural system has many advantages of being clear in function, safe and quick, skillful in design and the like, the potential safety hazard of sudden water gushing and sand gushing in the process of the penetration of pipe-jacking through the well wall is particularly overcome, and a new method is provided for non-excavation construction of underground pipelines such as water conservancy, municipal administration, heating power and communication.

The invention provides a construction method for a reinforced supporting structure for a foundation pit ramp under a heavy-load passing condition. The construction method comprises the following steps: A, road surface construction for the foundation pit ramp; B1, sidewall supporting structure construction for the foundation pit ramp; B2, sidewall steel latticework installation for the foundation pit ramp; and B4, diagonal bracing beam installation. The construction method has the advantages of being safe and rapid, advanced in technology, capable of being efficiently recovered, green and economic, capable of saving resources, and the like in the aspects of design construction concept, structure system stress, construction manner, recovery value and the like of the reinforced supporting structure for the foundation pit ramp, and is capable of being successfully applied to a supporting project for the foundation pit ramp under the heavy-load passing condition, and considerable in development and application prospect.

The invention relates to a design and construction method for a flexible composite lattice type recyclable double-row pile supporting structure. The method comprises the following steps that (1), a front pile row and a rear pile row are constructed; (2), profile steel crown beams are installed; (3), the earthwork is excavated in layers, panels are installed, and polymer grouting is carried out; (4), waist beams and contra-pull connecting rods are installed; (5), the earthwork is excavated vertically, hierarchically and sectionally in turn, the third step and the fourth step are repeated, the earthwork is excavated to the base elevation, and the construction of the flexible composite lattice type recyclable double-row pile supporting structure system is completed; and (6), after the supporting structure completes the use function, the supporting structure can be recycled step by step with the backfilling of a foundation pit. The constructed supporting structure system has the beneficialeffects of more reasonable structural stress, stronger resistance to lateral earth pressure, avoidance of crossing red lines, safety and reliability, quick construction, advanced technology, recyclability, superior economic and environmental protection indexes and the like and has considerable development and application prospects.

The invention provides an analysis method for mechanical performance of a stainless steel reinforced concrete column, and the method comprises the following steps of establishing a mechanical performance test of a stainless steel reinforced concrete eccentric compression column; checking whether the flat section assumption of a stainless steel reinforced concrete eccentric compression member is true; analyzing the variation law of a deflection curve, a mid-span lateral deflection and a longitudinal steel strain; checking the theoretical formula of the bearing capacity of the stainless steel reinforced concrete eccentric compression column; and giving a calculation formula of an average crack spacing of a test piece of the stainless steel reinforced concrete eccentric compression column anda recommended value of the component characteristic coefficient. The analysis method provided by the invention compares the failure mode, deflection curve, crack development and longitudinal steel strain of the stainless steel reinforced concrete eccentric compression test piece under the change of the reinforcement ratio and the loading eccentricity, and discusses the calculation of the bearingcapacity and the crack width, so that a method of calculating the bearing capacity of the stainless steel reinforced concrete column is established to provide theoretical basis for the design of stainless steel reinforced concrete structures, having a good development and application prospect.

The invention relates to a circular jacking pipe work well of a preset jacking pipe doorway in the water-rich stratum and construction method thereof. The construction method specifically comprises the following steps of (1) functional requirements design of a circular jacking pipe work well, (2) open caisson construction of a maintenance structure of the circular jacking pipe work well, (3) temporary edge protection construction; (4) earth excavation in the well, (5) sealing of the bottom of the circular jacking pipe work well, (6) installation of a ladder stand entering the circular jackingpipe work well, (7) joint leakage treatment, (8) installation of a water-stop pressing plate at an opening, (9) lifting of a sandwich concrete slab wall at the top of a preset doorway and (10) construction of jacking of a jacking pipe, and the design and construction of the circular jacking pipe work well of the preset jacking pipe doorway in the water-rich stratum is completed. The circular jacking pipe work well structural system of the preset jacking pipe doorway in the water-rich stratum has the advantages of clear function, safety, quickness, and smart design, especially overcomes the potential safety hazard of sudden water gushing and sand gushing in the process of the jacking pipe in the water-rich stratum penetrating the well wall, and provides a novel method for the non-excavationconstruction of underground pipes of water conservancy, municipal, thermal force, communication and the like.

The invention relates to an integrated design construction method of a flexible compound fabricated support and an underground structure. The method comprises the following steps that (1) side walls of the fabricated support structure are constructed; (2) a first layer of supporting system is installed; (3) earth excavation is carried out, and high polymers are poured to joints of the side walls of the fabricated support structure; (4) internal fabricated supporting systems are installed layer by layer; (5) excavation is carried out layer by layer and section by section sequentially in the vertical direction, and the step (3) and the step (4) are carried out repeatedly till the foundation base elevation is met; (6) a foundation pit of the underground space is sealed; and (7) the top of thefoundation pit is sealed, separated application of internal space capacities is improved, and accordingly construction is completed. The established underground space integrated structure has the various advantages of quick and convenient construction, recoverability, superior economic and environmental protection indexes and the like, the novel method which is safe, reliable, capable of achieving efficient recovery and superior in economic and environmental protection index is provided for construction of underground pipe galleries, underground space utilization and the like, and the application and development prospects are considerable.