109results about How to "Cost-effective" patented technology

A durable composite anticorrosive coating for a concrete structure of a road in a cold region belongs to the technical field of building materials, and adopts the specific scheme that the composite anticorrosive coating comprises an inner coating and an outer coating, the inner coating is coated on a concrete base surface, the outer coating is coated on the inner coating, and the outer coating is coated on the outer coating. The inner coating is a single-component epoxy resin interface bonding layer, and the outer coating is a single-component MMA resin sand-containing anti-corrosion layer. Through the composite structure design of the epoxy resin interface bonding layer and the MMA resin sand-containing anti-corrosion layer, the advantages of high permeability and strong bonding characteristics of epoxy resin and the advantages of rapid curing, high wear resistance, wide temperature range (still keeping toughness at-40 DEG C) and good weather resistance of MMA resin are fully played, and the efficient and lasting protection effect is achieved.

The application relates to a circuit structure for realizing circuit pin multiplexing, which comprises an MCU module, a temperature sensing circuit and a functional module circuit, the output end of the temperature sensing circuit is connected with an enable signal port of the MCU module, the output voltage of the temperature sensing circuit is always higher than the threshold voltage of the enable signal, and the MCU module is connected with the functional module circuit. The circuit structure for realizing circuit pin multiplexing adopts the application, aiming at the problem of circuit pin multiplexing, a temperature sensing output curve is designed, analog signal output and digital signal transmission are influenced mutually, the problem of single pin multifunction multiplexing is solved, analog signal output and input signal can share a pin, the problem of pin quantity limitation is solved, signal transmission is effectively solved, and the performance-cost ratio of the circuit is improved.

The utility model discloses a flexible protective device for treating a collapsed cavity at the top of a tunnel, which comprises at least two flexible protective nets which are arranged from top to bottom and connected to the inner wall of the collapsed cavity, and the aperture of the lower part of each flexible protective net is smaller than that of the upper part of each flexible protective net. The protective net is composed of a steel wire rope protective net body and a twisted-pair hexagonal flexible net body, the steel wire rope protective net body is formed by rhombic weaving of Galfan coating steel wire ropes, and the twisted-pair hexagonal flexible net body is formed by weaving of A-grade Galfan coating steel wires, overlaps the edge of the steel wire rope protective net body by 10-20 cm and is tied. The steel wire rope protective net is formed by splicing meshes of different specifications, splicing follows a specific principle, and steel wire rope buckles are used for connection. The device is further provided with anchor rods, spring hooks and other components, and the number and size of the components are determined according to the three-dimensional data of the collapsed cavity. Compared with a traditional protective net, the device can effectively absorb rockfall energy, is good in buffering effect, high in adaptability to different collapse cavities, easy and convenient to install and capable of reducing construction risks and guaranteeing tunnel construction and operation safety.

This invention belongs to the field of microbial technology and discloses the application of *Lactobacillus plantarum* P101 in the adsorption and removal of nanoplastics in environmental water. The *Lactobacillus plantarum* P101 strain is deposited at the China Center for Type Culture Collection (CCTCC), accession number CCTCC NO: M 2021108, deposit date January 19, 2021. This strain exhibits an adsorption rate of ≥85% for nanoplastics with a particle size of 100-1000 nm. The strain was isolated from fermented sauerkraut. The *Lactobacillus plantarum* P101 provided by this invention demonstrates significant adsorption capacity for nanoplastics in both live and inactivated states, which is of great significance for the environmental remediation of nanoplastics.

This utility model discloses a water replenishment device for arid desert ecosystems based on micro-moisture self-circulation in the field of soil replenishment equipment technology. It includes a water replenishment pipe with a seepage port at its bottom, buried within the desert soil. A rain collection tray and an air supply mechanism are connected to both ends of the water replenishment pipe, respectively, both located above the desert soil. A humidity sensor for detecting soil moisture is installed on the water replenishment pipe, and a humidity sensor for detecting air humidity is installed on the air supply mechanism. This utility model delivers water to the water replenishment pipe deep in the soil through the rain collection tray and delivers micro-moisture into the water replenishment pipe through the air supply mechanism. The warm air carrying the micro-moisture condenses in the water replenishment pipe, and the condensed water seeps into the soil through the seepage port, replenishing the desert soil's moisture and improving the desert ecological environment.

The invention discloses a sparse sensor optimization layout method for battery thermal safety monitoring. The method comprises the following steps: constructing a full-working-condition temperature field data set through high-fidelity simulation data; defining a multi-task loss function fusing the overall reconstruction error, the hotspot monitoring error and the spatial dispersion; and with minimization of the loss function as a target, an optimal sensor distribution point is automatically searched by adopting an optimization algorithm. According to the method, the problems of sensing blind areas and early warning lag existing in empirical layout are solved, high-precision temperature field reconstruction and early thermal safety early warning can be achieved with the minimum number of sensors, the reliability is high, the cost is low, and the method is suitable for thermal management design of various lithium ion battery systems.

This invention relates to a sealing machine and related improved sealing heads, as well as cans equipped with corresponding covering seals. The sealing head applies a covering seal (1) to the surface (3s) of a can (3) to be sealed, the can including an edge (3b) and an opening (3a) covered by a pull ring (31) for dispensing the contents of the same can. The sealing head (10) includes: a plurality of circular sealing sectors (20), an elastic device (30), and a heating device (12). A feature of this invention is the inclusion of elastic devices (31-36) with different stiffnesses when connected to the circular sealing sectors; that is, elastic devices with higher stiffness when connected to circular sectors (21-23) positioned corresponding to a distal point (D) of the edge (3i) adjacent to the opening of the can, and elastic devices with lower stiffness when connected to circular sectors (24-26) positioned at a proximal point (P) of the can edge adjacent to the can opening.

This utility model discloses a lockable sliding switch, comprising: an upper shell and a lower shell, the upper shell and the lower shell being connected to form a closed outer shell structure; a rotary lock seat, rotatably disposed within the upper shell and the lower shell; and a fixed lock seat, fixedly disposed within the upper shell and the lower shell, forming a relative rotational relationship with the rotary lock seat; the rotary lock seat is provided with a first locking plate, and the fixed lock seat is provided with a second locking plate; when the rotary lock seat is rotated to the locked position, the first locking plate and the second locking plate abut face to face, blocking the rotation of the rotary lock seat; the rotary lock seat is provided with a lock hole, and when the rotary lock seat is in the locked position, an external lock can be inserted into the lock hole and locked. This lockable sliding switch has the characteristics of double locking to prevent misoperation, stable gear switching, and reliable contact.

The invention provides a new energy power station planning method and system, and the method comprises the steps: obtaining the static characteristics of a plurality of candidate points, the static characteristics including the seismic activity frequency, the altitude, the gradient and the underground water burial depth; calculating a static abnormal score of each candidate point based on the static features of the candidate points, and performing a first round of screening on all the candidate points according to the static abnormal scores to obtain remaining candidate points; obtaining dynamic characteristics of each residual candidate point, wherein the dynamic characteristics comprise wind speed, sunlight intensity, environment temperature, environment humidity and precipitation; and performing a second round of screening on all the remaining candidate points based on the dynamic feature of each remaining candidate point and the static abnormal score of each candidate point to obtain a final point location. According to the method, multi-dimensional quantitative evaluation of new energy power station site selection is realized through a static and dynamic dual screening and clustering optimization mechanism, and site selection scientificity and engineering reliability are remarkably improved.

The invention discloses a functional fabric preparation method and finishing equipment for realizing fabric functionalization, and relates to the technical field of textile fabric functionalization and finishing equipment. According to the preparation method of the functional fabric, the functional finishing agent and fabric fibers can be triggered to be subjected to chemical grafting reaction through ultraviolet irradiation and / or heating, and the textile fabric is subjected to one-time continuous multifunctional finishing; the finishing equipment comprises two functional modules, an ultraviolet light initiation module and a thermal initiation module, can support different finishing processes of fabrics, realizes chemical covalent bond grafting reactions of different principles, has strong production operability and high flexibility, and has ideal popularization and application values in the fields of textile fabric finishing and engineering.

The utility model discloses a consumable detection device for a 3D printing extruder. The consumable detection device comprises a printing head shell, a wire extruding channel is vertically formed in the inner side of the printing head shell in a penetrating mode, and a detection channel, an adjusting groove and a square groove are formed in the inner side of the printing head shell. The inner wall of the detection channel is fixedly connected with a first fixing shaft and a clamping block. Through an innovative mechanical conduction structure, when the consumables are inserted from the top, the balls are pushed and eject the deflector rod, so that the distance between the magnet block on the deflector rod and the Hall sensor is changed, the entry state of the consumables is detected in real time, and meanwhile, the detection accuracy is improved. The Hall sensor can accurately sense the actual diameter of the consumables according to the difference of the shifting distance of the shifting rod caused by small change of the diameters of the consumables, real-time accurate control over the extrusion flow is achieved in combination with the driving motor and the transmission gear set, and the problem that in the prior art, the extrusion amount is unstable due to uneven diameters of the consumables is solved; and the consistency of printing quality is obviously improved.

The utility model discloses a laboratory is with ultrapure water and acid -base water system of making water, include: pretreatment module, the input of pretreatment module connects water inlet of tap water, reverse osmosis pure module, reverse osmosis pure module includes high pressure pump, reverse osmosis device and pure water tank, the input of high pressure pump is connected with the output pipeline of pretreatment module, the output of high pressure pump is connected with the input of reverse osmosis device, and the output pipeline of reverse osmosis device is connected with the input of pure water tank, multi -water quality preparation module, multi -water quality preparation module includes and is connected with pure water tank's acid -base water preparation unit, ultrapure water preparation unit and pure water direct -feed unit who sets up in parallel. The utility model discloses a laboratory is with ultrapure water and acid -base water making water device. The water system that the present application provides will prepare the function of four water qualities of pure water, ultrapure water, acid water, alkali water and integrate in one, discard the mode of the dispersed setting of traditional split type equipment, and the overall land area of equipment is greatly reduced, especially adapts the laboratory scene of space nervous.

The invention belongs to the technical field of avionics testing and signal simulation, and discloses an LVDT analog simulation circuit and a signal simulation method thereof, and the LVDT analog simulation circuit comprises a main control module, a communication interface module, an excitation signal processing module and a sensor signal simulation output module. The main control module receives an external displacement setting instruction through the communication interface; the excitation signal processing module comprises a DAC unit and an excitation conditioning unit and is used for generating amplitude control voltage and conditioning an external LVDT excitation signal; the sensor signal simulation output module serves as a core and comprises a difference value control unit, a sum value control unit, a summation unit and a differencing unit, a conditioned excitation signal and amplitude control voltage are synthesized through an analog multiplier and an operational amplifier circuit, and finally three-phase differential signals (a high end, a low end and a center tap) simulating a real LVDT sensor are output. A mechanical LVDT is replaced by a full-electronic mode, high-precision, programmable and flexible simulation of displacement signals is achieved, the device is particularly suitable for occasions needing high-reliability LVDT interface testing and verification such as an aviation flight control system, and the device has the advantages of being low in cost, high in flexibility and easy to integrate automatic testing.

This invention belongs to the field of water conservancy and marine engineering technology, and specifically relates to an optimized design method for sandbag revetment protection structures on erosive beaches. The method includes: basic data collection, material selection and determination, optimized design of individual sandbag dimensions, and determination of the structural assembly and installation method. To better utilize sandbag protection structures for the protection of erosive sandy beaches, this application, through theoretical derivation, optimizes the stability design formula for beach sandbag structures, improves the design process for beach sandbag revetment structures, and enhances the applicability of the protection structure.

This invention discloses a method and system for synchronous inversion of multiple atmospheric parameters, belonging to the field of atmospheric laser remote sensing technology. The probe light and the reference light are obtained by splitting laser pulses; the probe light is expanded, reflected, and then perpendicularly incident into the atmosphere, where it is scattered by the atmosphere to obtain the echo light. That is, all parameters originate from the same measurement and the same spectrum, resulting in perfect spatiotemporal consistency of the data, efficient measurement methods, and accurate measurement results. The temperature and pressure parameters in the atmosphere are calculated using the normalized scattering spectrum, and then aerosol and wind speed parameters are obtained, achieving true synchronous inversion of the four key parameters of temperature, pressure, wind speed, and aerosols for the first time. Furthermore, in applications such as meteorological forecasting, achieving synchronous measurement of atmospheric temperature, pressure, wind speed, and aerosols can save costs and improve efficiency, which has significant practical implications.

The utility model relates to the technical field of LED street lamps, in particular to an LED street lamp with a heat dissipation structure convenient to install. The LED street lamp convenient to install the heat dissipation structure comprises a shell, installation frames, a light bar and the like, the installation frames are fixedly connected to the left side and the right side of the bottom of the shell, the light bar is installed on the upper portion of the right wall of the shell, a solar panel is installed on the top of the shell, a draught fan is installed on the upper portion in the shell, and the draught fan, the light bar and the solar panel are all electrically connected. Hot air is dissipated through the draught fan and the square holes, then residual heat is taken away through the natural cooling effect and the evaporation process of rainwater in the hollow plate, and therefore the temperature of the street lamp is effectively reduced, environment protection and energy conservation are achieved, manual liquid supplementing is not needed, and the street lamp has the advantages of being high in cost benefit, high in adaptability and the like. Opening and closing of the square hole are controlled through the baffle, so that rainwater is prevented from continuously entering the shell from the square hole in rainy seasons, rainwater erosion is effectively prevented, and a circuit is protected from being affected.

The invention discloses a universal molecular beacon kit for various animal-derived components, and belongs to the technical field of molecular biological detection. Aiming at gene segments with specific structural characteristics in 11 common livestock and poultry animal genomes, the invention designs a composition of a universal primer and a molecular beacon fluorescent probe. The combination can be used for carrying out real-time fluorescent PCR detection and melting curve analysis by using the kit and the method by taking genome DNA of a sample to be detected as a template. By comparing the shape of a melting peak of a detected sample and the characteristic melting temperature (Tm value) of the detected sample, 11 animal-derived components of livestock and poultry can be quickly and accurately identified under the condition of single-tube detection. Technical innovation is achieved in the field of molecular biological detection, an efficient and reliable solution is provided for animal-derived component detection, and the method has important practical value and popularization potential.

The invention relates to a method for synergistically enhancing bank slope vegetation water quality purification through arbuscular mycorrhiza and nitrifying bacteria, and belongs to the technical field of water environment ecological management and ecological engineering. The method comprises the following three core steps: preparation of an arbuscular mycorrhiza-nitrifying bacteria immobilized complex microbial inoculant, construction of a bank slope vegetation rhizosphere microhabitat, and cooperative regulation and control of system stabilization and purification functions. According to the method, the rhizosphere microhabitat of the bank slope vegetation is actively intervened by artificially inoculating the fungicide formed by the arbuscular mycorrhiza and the nitrifying bacterium community, and the symbiotic system formed by the arbuscular mycorrhiza-nitrifying bacterium composite community and the plants is utilized, so that the method is environment-friendly, high in cost benefit, simple and stable in operation condition, easy to engineer and suitable for large-scale popularization and application. And an innovative solution is provided for realizing synergistic interaction of bank slope ecological restoration and water quality purification.

The invention discloses a mica ceramic heating plate and an assembling method thereof, and belongs to the technical field of electric heating equipment, the heating plate comprises a plate body assembly, the plate body assembly comprises an upper plate cover and a lower plate seat, one end of the lower plate seat is provided with a mounting groove matched with the upper plate cover, and the other end of the lower plate seat is provided with a cavity communicated with the mounting groove; a heating assembly is arranged in the mounting groove and located between the upper disc cover and the lower disc base, the heating assembly comprises a base plate matched with the mounting groove and mica sheets arranged on the surfaces of the two sides of the base plate, and the mica sheets on the two sides of the base plate are flexibly attached to the lower disc base and the upper disc cover respectively. According to the heating disc of the scheme, thermal resistance caused by air gaps in the heating disc can be eliminated, and heat is efficiently conducted to the heating disc; meanwhile, stress generated by thermal expansion and cold contraction of an internal structure can be effectively absorbed, damage such as cracking of the disc body is prevented, and the service life of the disc body is effectively prolonged. According to the scheme, the assembly method is simple, and heat loss caused by air gaps in the heating disc can be effectively eliminated.

The invention relates to a superparamagnetic (SPM) transducer comprising: - a rigid body (10) having a longitudinal central axis (X) and two planar surfaces (101, 102) at each of the opposite ends of the body (10) in the direction of the longitudinal central axis (X), the two planar surfaces (101, 102) being substantially perpendicular to the longitudinal central axis (X); - at least one support channel (103) formed in the body (10) and accommodating a SPM coil (2), the support channel (103) extending parallel to the longitudinal central axis (X) and being open to the two planar surfaces (101, 102), the SPM coil (2) being formed by a core based on a SPM material around which at least one electrical conductor is wound. Furthermore, a feedback winding (3) is formed by an electrical conductor along the longitudinal central axis (X) and wound on an outer surface of the body (10).

The invention discloses a device and a method for detecting tiny flaws on the surface of a reflective vehicle logo, and relates to the technical field of defect detection. The method comprises the following steps: acquiring camera acquisition data, and preprocessing the camera data to obtain a repaired image; a cross-space multi-scale attention module is added in the YOLOv8 network, and a defect detection model comprising a target scale mapping module and the cross-space multi-scale attention module is formed; inputting the repaired image into a flaw detection model for training to obtain a trained flaw detection model; and inputting a to-be-detected image into the trained flaw detection model, and detecting tiny flaws on the surface of the reflective vehicle logo. According to the invention, reflection interference on the surface of the vehicle logo can be effectively inhibited by using the polarization technology, the image acquisition quality is improved, the method is suitable for vehicle logo of different specifications, and a reliable basis is provided for subsequent high-precision online real-time defect identification.

This invention discloses a weak force sensor based on a teardrop-shaped micro / nano optical fiber and its fabrication method. The sensor comprises a biconical micro / nano optical fiber, a single-conical optical fiber, a quartz capillary tube, and a PDMS microsphere. The biconical micro / nano optical fiber is symmetrically bent, with the central waist region fiber forming a teardrop-shaped ring. The two ends of the teardrop-shaped micro / nano optical fiber ring are sequentially connected to portions of the waist region fiber, a transition region fiber, and a standard fiber. This invention utilizes the sensitive self-sensing capability of micro / nano optical fibers to achieve integrated signal input and output, greatly simplifying the measurement feedback mechanism of the sensing system and reducing overall cost. Furthermore, it is simple and intuitive to operate, reducing the technical requirements for operators. In terms of sensor fabrication, the main raw materials are standard optical fiber and quartz capillary tube, both of which are extremely low-cost. Therefore, this micro / nano optical fiber sensor exhibits significant cost-effectiveness.

This invention discloses a filtering device suitable for mobile phone shielding, comprising a connector, a tube, a first conductive element, a second conductive element, and a tubular ceramic capacitor. The connector includes a metal housing and a conductive core disposed within it. The tube is also made of metal, with its front end connected to the rear end of the connector housing. The first conductive element passes through the tube axially from within it, without contacting the tube. The front end of the first conductive element is connected to the conductive core of the connector. The second conductive element is disposed outside the tube, with its front end connected to the connector housing. The tubular ceramic capacitors are connected in series with the first conductive element, with at least one of them sealing the rear end of the tube. The casing of the tubular ceramic capacitor includes a conductive portion connected to the tube. Compared with existing technologies, this filtering device not only performs better in high-frequency filtering and electromagnetic shielding, but its structural design is also simpler and more practical.

The utility model discloses an outdoor vehicle-mounted rotary stove, and belongs to the field of vehicle-mounted stoves. The stove is installed on a vehicle-mounted trunk and is composed of a first storage cabinet, a second storage cabinet and an operation area, and the operation area comprises a supporting column, a stove fire assembly and a cleaning assembly. Aiming at the problems of low firepower, poor wind resistance, inconvenience in fixation of an independent outdoor furnace end, easiness in flameout and the like of the existing special stove for the motor home, the stove adopts the design of a large-firepower furnace end and a self-contained wind shield, and has the advantages of high safety, strong practicability, multiple functions and the like. During use, cooking can be performed by connecting a power supply, a water tank and gas, and during storage, operation is performed according to an opening sequence, and a mechanical lock is used for locking after closing. Through the reasonable structural design, the cooking requirements of people for outdoor travel, camping and picnic are met, and the outdoor market competitiveness of the pickup truck is enhanced.

A method of manufacturing a semiconductor device. According to some embodiments, the method includes forming a substrate of a first conductivity type having a doped layer fabricated therein that can be used as a bottom layer of a barrel-like structure in the semiconductor device. The bottom layer has a second conductivity type opposite the first conductivity type, and a peak doping concentration plane of the bottom layer has a predetermined bottom layer embedding depth from a top surface of an initial substrate layer of the substrate, the predetermined embedding depth being substantially greater than 0.5 [mu] m. The method may further include forming a plurality of sidewalls of the barrel-like structure. The method may further include forming the high voltage transistor of the barrel-like structure.

The invention relates to the technical field of data management, and provides a lightweight business data change history recording method and system.The method comprises the steps that data persistence operation initiated through an ORM framework is intercepted and analyzed, and the operation type, involved target business objects and corresponding operation conditions of the data persistence operation are determined; reading external dynamic configuration, and judging whether the target business object is set as an audit object which needs to record a change history according to configuration information; and for the audit object needing to record the change history, automatically executing data state capture and audit log generation corresponding to the operation type. According to the method, the development efficiency can be remarkably improved, the maintenance cost can be remarkably reduced, non-invasion and purity of service codes are achieved, high flexibility and expandability are provided, integrity and traceability of audit data are guaranteed, and system operation and maintenance and data governance experience are optimized.

The invention discloses a multidirectional forging and extruding hydraulic machine with a straight column horizontal loading system, which comprises a rack, a vertical oil cylinder for extruding along the vertical direction and a horizontal oil cylinder for extruding along the horizontal direction, and the vertical oil cylinder and the horizontal oil cylinder are arranged on the rack; the frame structure is formed by an upper semicircular beam, a lower semicircular beam, a left stand column and a right stand column, the left stand column and the right stand column are supported on the left side and the right side between the upper semicircular beam and the lower semicircular beam, and the steel wire winding layer is wound on the outer side of the frame structure. The height of the right side of the upper end of the right stand column is not larger than the height of the left side, the height of the right side of the lower end of the right stand column is not smaller than the height of the left side, and the upper ends and the lower ends of the left stand column and the right stand column are in left-right locking connection with the lower end face of the upper semicircular beam and the upper end face of the lower semicircular beam through concave-convex inserting structures correspondingly. And the requirements of large-tonnage vertical die-splitting swaging and horizontal die-splitting swaging can be met.

The utility model discloses a double oil pipe suspension device with pipeline protection function, including the suspension body, be equipped with the pressing plate on the suspension body, and the suspension body is by two half symmetrical and constitutes a annular whole, and every half is equipped with two passages, and one passage is equipped with the oil pipe, and the other passage is equipped with the crossing sheath, and the crossing sheath suspension body fastening connection, and the crossing sheath is equipped with the pipeline, and the upper and lower ends of crossing sheath are all through the pipe clamp fixed connection pipeline, the utility model discloses a double oil pipe suspension device with pipeline protection function adopts the symmetrical two half structure design, and the suspension body inside is matched and is set up double oil pipe and crosses crossing sheath, and the protection crossing of the pipeline such as the pipeline of downhole safety valve control, chemical reagent injection pipeline is convenient.

The utility model discloses a device for testing the focus of an X-ray bulb tube, which comprises a support base and a test support, the test support is fixed on the support base, the height and the angle of the test support can be adjusted, a dental film base is arranged on the test support, a handle is arranged on the dental film base, and the test support is fixed on the support base. A height fixing knob is arranged on one side of the test bracket; the slit camera is placed on an X-ray path; the dental film is positioned on the dental film base; a computer; the X-ray image processing system has the advantages that by means of optimized hardware design and advanced software control, the aims of being efficient, accurate, easy to use, high in adaptability and high in cost effectiveness are achieved, and the X-ray image processing system has wide application prospects and market value.

This invention relates to the technical field of road engineering, and in particular to a method for converting old road structures into long-life pavement structures based on low-carbon cold recycling, comprising the following steps: S1, milling and recycling of the old pavement layer; S2, conversion of the semi-rigid base course system by vibratory compaction using a road roller to convert the semi-rigid base course into a granular flexible subbase course; S3, injection of a semi-flexible isolation layer; injection of a highly permeable slurry into the crushed base course to form a flexible recycled isolation layer; S4, forming of the flexible recycled base course; uniformly spreading a mixture of milled recycled material and new aggregate on the isolation layer, and simultaneously spraying and injecting bio-based modified emulsified asphalt; S5, laying of a low-carbon surface layer; spraying a modified emulsified asphalt tack coat onto the surface of the flexible recycled base course, followed by spreading a rubber asphalt concrete surface layer, and finally compacting it. The construction method of this invention solves the problems of "high carbon emissions, rapid recurrence of reflective cracks, and short lifespan" in traditional old road reconstruction and expansion.