115results about How to "Lightweight" patented technology

The invention discloses a fiber foamed concrete and a preparation method thereof. The fiber foamed concrete comprises the following raw materials in parts by weight: 5290 parts of cement, 4965 parts of water, 1.361 part of foaming solution, 1.2964 part of fly ash and 10 parts of fiber. The preparation method comprises the following steps: proportionally weighing the components; sequentially adding the cement and fly ash into a stirrer, proportionally weighing the water, uniformly stirring the mixture by the stirrer, and adding the fiber; preparing and adding the foaming solution; gradually adding the foam into the mixture, and continuously stirring until all the components are uniformly mixed; pouring the mixture into a mold on which lubricating oil is brushed, and curing in a curing chamber; after 24 hours, removing the mold; and respectively curing for 3 days, 7 days and 28 days for experimental detection. The fiber foamed concrete has the advantages of favorable thermal insulation property, favorable compression resistance and favorable bending resistance, and is applicable to a railway bed strengthening layer.

The invention discloses a multi-degree-of-freedom morphing wing based on a zero poisson ratio superstructure, and belongs to the technical field of morphing wings. The wing comprises a front edge section, a wing body and a rear edge section which are sequentially connected, the front edge section comprises an inner side front edge plate, a middle front edge plate and an outer side front edge plate, the wing body comprises a plurality of zero-Poisson-ratio honeycomb structures, each zero-Poisson-ratio honeycomb structure is formed by arraying a plurality of zero-Poisson-ratio unit cell cubic structures, and the adjacent zero-Poisson-ratio unit cell cubic structures share a connecting rod; the rear edge section comprises an inner side rear edge plate, a middle rear edge plate and an outer side rear edge plate; the inner-side front edge plate and the inner-side rear edge plate, the middle front edge plate and the middle rear edge plate, and the outer-side front edge plate and the outer-side rear edge plate are respectively connected through zero-Poisson-ratio honeycomb structures which are arranged along the chord length direction of the wing; the two sides of the middle front edge plate are connected with the inner side front edge plate and the outer side front edge plate through zero-Poisson-ratio honeycomb structures arranged in the extension direction of the wing correspondingly, and the two sides of the middle rear edge plate are connected with the inner side rear edge plate and the outer side rear edge plate through zero-Poisson-ratio honeycomb structures arranged in the extension direction of the wing correspondingly. The wing has four deformation functions of variable elongation, chord length, dihedral angle and camber, so that the aircraft can adapt to different flight environments and tasks.

The utility model relates to a lightning protection and insulation withstand voltage protection circuit, which is characterized in that a circuit is formed by piezoresistors MOV1, MOV2, MOV3 and MOV4, when surge voltage such as lightning stroke and the like exceeds rated voltage, the values of the piezoresistors in a parallel circuit are suddenly reduced to be conducted, high voltage passes through gas discharge tubes G1 and G2, and after lightning transient overvoltage is discharged, the circuit is discharged by a grounding wire. Meanwhile, the resistance value of a piezoresistor MOV5 connected in the LN circuit in parallel is sharply reduced to be switched on, and a fuse Ft is burnt out by instantaneous strong current, so that electric equipment such as an LED power supply and the like is prevented from being damaged. In addition, the technical scheme has a protection mode of lightning protection and discharge resistor combination of resistors R1, R2 and R3, can meet the requirements of lightning protection and high voltage, has the characteristics of no leakage current, no follow current and the like, and effectively prolongs the service life of an LED system.

The invention discloses a cladding tube for a lithium cold space nuclear reactor and a preparation method of the cladding tube, and belongs to the technical field of cladding tube structures, and the cladding tube is of an interlayer structure formed by sequentially overlapping a first W-Re alloy layer, a first WSi2 coating, a SiCf / SiC composite material layer, a second WSi2 coating and a second W-Re alloy layer from inside to outside. According to the invention, the air tightness and corrosion resistance of the cladding tube are obviously improved, and the cladding tube for the lithium cold space nuclear reactor has the properties of strong toughness, light weight, corrosion resistance, sealing property and the like.

The present invention provides a host-side lightweight container traffic monitoring system and method based on eBPF, including: a container information management module: collects and automatically maintains container information; a kernel eBPF module: a BPF program executed in the kernel, obtains data traffic information and passes it to the user space; an eBPF program management module: cooperates with the container information management module and the user interaction module to manage the kernel eBPF program, extracts the obtained data traffic information and passes it to the user interaction module; the user interaction module: accepts the input container traffic control rules, and converts them into eBPF program logic to realize system functions. The present invention is based on eBPF technology, has the characteristics of convenient use and high efficiency. In terms of traffic monitoring, the transmission path between data traffic receiving and being captured is shorter, and the system response speed is also faster.

The invention discloses a preparation method of a high-breathability anti-ultraviolet fabric and the fabric, relates to the technical field of functional fabrics, and provides the preparation method of the high-breathability anti-ultraviolet fabric which is high in breathability, light, thin and comfortable and has a high ultraviolet protection coefficient and the fabric. The invention discloses a preparation method of a high-breathability anti-ultraviolet fabric. The preparation method comprises the following steps: S1, weaving; alkali-soluble yarn is mixed into the yarn according to the proportion of 15%-50%, and after the yarn is subjected to warping, sizing and re-beaming, the yarn is woven through a weaving machine; s2, desizing; adding sodium carbonate, a scouring agent and a chelating agent into a desizing machine for treatment to remove an oiling agent in the fabric; s3, yarn dissolving treatment; a NaOH solution is added into the dissolving solution according to the proportion of 10 g / L, and alkali-soluble yarn in the fabric is dissolved away; s4, carrying out anti-ultraviolet treatment; soaking the fabric in an acidic anti-ultraviolet agent solution for dyeing, and then carrying out color fixation and cleaning treatment; s5, shaping and finishing.

The invention discloses LaxCe (1-x) O (2-0.5 x) hollow microspheres and a preparation method thereof, and belongs to the field of rare earth metallurgy. The LaxCe (1-x) O (2-0.5 x) hollow microspheres are prepared by grinding LaxCe (1-x) O (2-0.5 x) (x = 0, 0.36, 0.5) powder, performing spray granulation and performing high-temperature firing. The slurry for spray granulation is high in concentration and good in dispersity, the production cost of spray granulation is reduced, and the yield of hollow microspheres is increased; the prepared LaxCe (1-x) O (2-0.5 x) hollow microspheres have the advantages of light weight, heat insulation, sound insulation and excellent low-frequency performance, and have good application prospects in the fields of reflective thermal insulation coatings, light thermal insulation materials, thermal spraying thermal insulation and wear-resistant materials, thermal insulation plates, sewage purification, sound absorption materials, drug sustained-release and controlled-release bodies, catalyst carriers, photoelectric materials and the like.

The utility model relates to a 45-degree oval thoracic cavity curettage spoon, which belongs to the technical field of medical supplies. The utility model discloses handle and harrow hook are connected as an organic whole, the harrow hook includes the harrow hook main part and the spatula who are connected, the spatula is arranged at the front end of the harrow hook main part, the handle is arranged at the rear end of the harrow hook main part, and the spatula adopts oval long groove type design. The utility model has simple and reasonable structure design, is safe and reliable, convenient to operate, can be applied to single-hole and multi-hole thoracoscope, and satisfies the use demand.

The utility model provides a liquid cooling plate, a battery pack and a vehicle, and belongs to the technical field of power batteries. The liquid cooling plate comprises a first mounting plate and a second mounting plate; the second mounting plate is a resin-based composite material mounting plate; the second mounting plate and the first mounting plate are connected to form a liquid cooling flow channel; the second mounting plate comprises at least two structural plates which are connected in a laminated mode, and the strength of the at least two structural plates is different. On the basis of ensuring the structural strength of the liquid cooling plate, the heat exchange amount between the liquid cooling plate and the outside is reduced, namely the thermal insulation performance of the liquid cooling plate is improved; in addition, the material cost of the structural plate with relatively low strength is lower, so that the material use cost is also reduced, and the balance between the structural strength and the material cost of the liquid cooling plate is realized.

A vehicle front structure of the present application is provided with a vibration absorber. The vibration absorber has a recess that forms an internal space, an upper-side through portion that links a space above the vibration absorber to the internal space, a lower-side through portion that links a communication space linked to the upper-side through portion in the internal space to a space below the vibration absorber, and a pair of soundproofing portions. The pair of soundproofing portions separate the communication space and a space adjacent to the communication space in the internal space in the vehicle width direction.

The utility model relates to the technical field of downhole geophysical prospecting, specifically a kind of instrument shock absorption type storage device for downhole geophysical prospecting. Including: storage component, the storage component includes box, lid, storage, shock pad and sealing element, the lid rotationally connected on box, storage is set to the inside of box, shock pad is fixedly connected at the bottom of box, the sealing element is set to the outside of box;Protective component, the protective component is set to the inside of box and lid, and protective component includes buffer, foam pad, magic tape, limiting piece and pull rope, buffer is set to the inside of storage, foam pad is set to the inside of box and lid, magic tape is set to the outside of foam pad, limiting piece and pull rope are all set to the outside of buffer. The utility model can avoid that instrument is extruded harm, utilizes lining bushing and is wrapped with instrument protection, can reduce the impact force from each direction, improves the protection effect to instrument.

The present invention provides a method for absorbing energy in a gradual gradient collision for rail vehicles. In the energy absorption method, the impedance and effective deformation stroke curves of the rail vehicle include a gradient energy absorption zone curve, and the gradient energy absorption zone curve refers to a curve in which the impedance is gradually increased as the effective deformation stroke of the vehicle increases; the gradual gradient is a smooth gradient or a step gradient; and the energy absorption method is implemented by a corresponding energy absorption device. The energy dissipation calculation results of the two modes of traditional multi-stage energy absorption in the prior art and the gradual gradient energy absorption of the present invention show that under the same impact conditions, the high-speed train adopting the gradual gradient energy absorption mode has better energy absorption and impact deceleration on the main energy absorption interface than the traditional multi-stage energy absorption mode. The gradual gradient energy absorption mode provided by the present invention can reduce the risk of train structure damage during a collision to a greater extent, and better protect the personal safety of passengers and drivers and control personnel.

The invention provides a panoramic lens. The panoramic lens is sequentially composed of a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and plate glass from the object side face to the image face. The first lens has negative focal power, the second lens has negative focal power, the third lens has positive focal power, the fourth lens has positive focal power, the fifth lens has negative focal power, the sixth lens has positive focal power, the seventh lens has negative focal power, and the eighth lens has negative focal power. The method satisfies the following conditional expression: 190 degree lt; a FOVlt; 205 DEG, wherein FOV represents a full field angle of the panoramic lens; iMA is greater than or equal to 6 mm and less than or equal to 7 mm, 0.38 lt; iMA / TTLlt; 0.46, 0.95 lt, 0.46, 0.95 lt; cA1 / TTLlt; 1, VP is greater than or equal to 2, 2.97 lt; iMA / FNOlt; and 3.57, can be matched with a 1 / 1.8 inch large-target surface sensor to realize high-resolution imaging, has a field angle of about 200 degrees, meets the requirements of users on large-view panoramic imaging, has the characteristics of short total length, small caliber and small volume, and is convenient for realizing miniaturization and portability of photographic equipment.

The invention relates to the field of thermal insulation materials, and discloses a fireproof thermal insulation coating as well as a preparation method and application thereof. The fireproof heat-insulating coating is prepared from 10 to 30 parts of epoxy resin, 1 to 5 parts of curing agent, 5 to 20 parts of sulfonated polyhedral oligomeric silsesquioxane intercalation modified multi-metal compound, 30 to 80 parts of silicon dioxide, 20 to 50 parts of metal oxide, 0.5 to 1 part of borax, 5 to 20 parts of short fiber and 50 to 80 parts of diluent. The coating provided by the invention takes epoxy resin as a base material, and has the characteristic of light weight compared with a heat-insulating fireproof blanket and a mica plate. The sulfonated polyhedral oligomeric silsesquioxane modified multi-metal compound is compounded in the coating, so that the fireproof and heat-insulating properties and mechanical properties of the coating can be remarkably improved.

This invention relates to the field of integrated circuit manufacturing, specifically disclosing a semiconductor photoelectric level sensor, its fabrication method, and its application. The sensor is a sheet-like structure comprising: a substrate including multiple photodiodes evenly distributed on a ring with a first circular axis perpendicular to the substrate as its axis of symmetry; a circular cavity located on the substrate, perpendicularly corresponding to the ring formed by the multiple photodiodes, and containing a rollable microgravity sphere; and a first signal light guide located on the circular cavity, also circular in shape and perpendicularly corresponding to the cavity, for vertically guiding actively irradiated circular signal light into the cavity. This invention utilizes the lowest point of the circular cavity where the rollable microgravity sphere can freely roll under gravity, and simultaneously guides actively irradiated circular signal light vertically into the cavity, with the multiple photodiodes accurately sensing the precise angular position of the rollable microgravity sphere.

The utility model discloses a liquid crystal display television frame structure which comprises an upper frame, a lower frame and a reinforcing assembly, the upper frame is installed on the upper end face of the lower frame, the reinforcing assembly is arranged on the inner side of the lower frame, the reinforcing assembly comprises a reinforcing frame and reinforcing ribs, the reinforcing frame is installed on the inner side of the lower frame, and four sets of reinforcing ribs are arranged on the inner side of the reinforcing frame. A reinforcing plate is arranged in the center of the reinforcing frame, a first reinforcing block is arranged on one side of the reinforcing plate, a second reinforcing block is arranged on the side, away from the first reinforcing block, of the reinforcing plate, and a connecting plate is mounted on the upper end face of the second reinforcing block. According to the connecting device, metal and plastic are combined for use, so that the connecting device is light in weight and high in strength, the stability of the frame is guaranteed, the television frame is supported through the reinforcing assembly, the situation that the liquid crystal television outer frame drives the connecting device to bend is avoided, and the stability of the liquid crystal television outer frame is improved.

The present invention discloses a 3D printed graded rebound structure and a sole using the structure, wherein the graded rebound structure comprises a surface grid, a plurality of 3D printed graded rebound lattice units, a ring edge, a bottom grid and a diagonal brace; the graded rebound lattice unit is composed of a shock absorbing component and a shock absorbing rebound part; the shock absorbing component is composed of n vertical rods, n diagonal braces, and 4n diagonal braces to form a plane force structure (n≥3); the shock absorbing rebound component is a single elastic vertical column structure. The present invention is based on the plantar pressure distribution, and the 3D printed secondary rebound structure is applied to the sole, which can not only fully absorb the impact energy generated by the movement through its two times of shock absorption, but also provide a strong rebound force, support athletes of different sports and different sports characteristics to complete technical movements, protect athletes from sports injuries, and also have the functions of comfortable breathability, customizability, and lightweight.

The invention relates to a building special-shaped imitation brick facing outer wall structure and a construction method, and the structure comprises a rear embedded part which is fixed on a civil engineering main body structure through an anchor bolt; the main keels comprise a plurality of vertical main keels and transverse main keels which are vertically arranged in space, and the vertical main keels and the transverse main keels are welded to the rear embedded part to form a preliminary contour positioning structure meeting the building requirement; the secondary keel is welded on the primary contour positioning structure to form a primary contour structure; the fiber board is fixed and covers the preliminary contour structure to form a quasi contour structure; the imitated red bricks are pasted on the surface of the quasi-contour structure to form an outer wall structure. Wet operation is reduced, the construction precision and quality are improved, the structural stability is enhanced, meanwhile, the lightweight characteristic is achieved, on the basis that the weight of a building is reduced, the overall energy consumption is reduced, various sizes, shapes, colors and textures can be molded, the building is clear and natural, and rich and diversified building styles can be achieved.

This application discloses a defect processing method, a defect processing device, an electronic device, and a server, belonging to the field of electronic device technology. The method on the first electronic device side includes: when a first operational anomaly event occurs, the first electronic device sends first defect data to a cloud server; the first defect data includes defect data of the first operational anomaly event collected by the first electronic device through pre-embedded points; the first electronic device receives a first Berkeley Data Packet Filter (BPF) program and a first path sent by the cloud server; the first path includes the critical path of the first operational anomaly event; the first electronic device mounts the first BPF program to the first path; when the first electronic device runs on the first path, it triggers the execution of the first BPF program, and collects second defect data of the first operational anomaly event through the first BPF program.

The present invention relates to a foaming molding device and a foaming molding method using the device, wherein the foaming molding device preferably comprises: a foaming agent supplying section for injecting a foaming agent; a molten resin supplying section for injecting a molten resin; a fixed type mixing section for mixing the foaming agent injected from the foaming agent supplying section and the molten resin injected from the molten resin supplying section together from an internal rod-shaped body to form a foaming resin critical solution; and a molding section for molding a foamed molded product using the foaming resin critical solution injected from the fixed type mixing section. By using a high-strength multi-channel flow channel, a high-viscosity gel-like molten resin and a high-pressure compressed low-viscosity foaming agent are uniformly mixed in large quantities to form a foaming resin critical solution, so that the number of foaming pores generated from the molding section or the injection mold when injecting or injecting the foaming resin critical solution can be greatly increased, thereby greatly reducing the specific gravity of the foamed molded product and achieving lightweight foamed molded products.

This invention relates to the field of locomotive welding technology, specifically disclosing a positioning device and method for welding locomotive roofs. The positioning device for locomotive roof welding includes: a traveling trolley, a main lifting mechanism, a linkage clamping mechanism, and an arc-shaped rod clamping mechanism; the main lifting mechanism includes a main lifting drive and a lifting seat, with the output end of the main lifting drive connected to the lifting seat; the linkage clamping mechanism includes a horizontal drive and two linkage clamping members spaced apart along a first horizontal direction, the linkage clamping members being used to clamp roof connecting rods; the arc-shaped rod clamping mechanism includes an arc-shaped rod lifting drive and an arc-shaped rod clamping member, the arc-shaped rod clamping member being used to clamp the arc-shaped rod of the roof. The positioning method for locomotive roof welding is accomplished using the above-mentioned positioning device. The positioning device and method for locomotive roof welding can solve the problems of poor flexibility, poor positioning accuracy, and simple clamping fixture structure existing in the positioning mode of existing locomotive roof welding.

The embodiment of the utility model provides a top cover assembly of a vehicle and the vehicle, and belongs to the technical field of vehicle parts, the top cover assembly comprises a top cover cross beam and a top cover outer plate arranged on the top cover cross beam, one end of a side wall connecting plate is used for being connected with a side wall assembly of the vehicle, the other end of the side wall connecting plate is connected with the top cover cross beam, and the top cover cross beam is connected with the top cover outer plate. And the reinforcing piece is connected with the top cover outer plate and the side wall connecting plate so as to support the top cover outer plate together with the top cover cross beam. According to the top cover assembly of the vehicle, the reinforcing piece is used for connecting the top cover outer plate and the side wall connecting plate, the reinforcing piece and the top cover cross beam jointly support the top cover outer plate, and therefore the structural strength of the top cover assembly is locally enhanced, redundant materials are reduced, and the weight of the whole vehicle is reduced on the premise that the bending resistance of the top cover assembly is guaranteed.

This invention discloses a nebulized inhalation therapy device for pediatric pneumonia, relating to the field of medical device technology. It includes a nebulizer, a nebulizer cup, a nebulizer mask, and nebulizer tubing. It also includes: a micro-pressure air supply component installed inside the nebulizer, used for stable air injection; and a pneumatic sealing component installed on the outer surface of the nebulizer mask, used for dynamic sealing of the nebulizer mask. In use, the micro-pressure air supply component injects stable micro-pressure gas into a flexible sealing airbag. The flexible sealing airbag automatically expands and fills according to the child's facial contours, evenly wrapping the cheeks, nose, and jawline, maintaining a continuous seal. Simultaneously, the stepped wavy lip forms a multi-layered seal to conform to the facial contours. The pneumatic sealing component ensures a tight fit between the edge of the nebulizer mask and the patient's face, preventing side leakage. Both the flexible sealing airbag and the stepped wavy lip are made of medical-grade liquid silicone, which is soft and non-irritating.

The application relates to the technical field of beam structures, in particular to a beam structure which comprises a beam main body and connecting bases, the number of the connecting bases is two, the two connecting bases are symmetrically arranged at two ends of the beam main body, and a butt joint mechanism is arranged between the connecting bases and the beam, the beam main body comprises an outer shell, longitudinal ribs, plate ribs and inclined ribs, the surface of the beam main body is provided with a track structure, the two ends of the inclined ribs are respectively connected with one side of the inner top wall of the outer shell and the inner bottom of one side, the surface of the outer shell is provided with a track and other protruding structures, therefore, the inclined ribs in the beam can realize internal diagonal line connection of the outer shell with the shortest length, the weight of the beam structure is reduced while the strength of the outer shell is improved, and the beam structure can realize minimum weight on the premise of guaranteeing overall strength through the arrangement of the longitudinal ribs, the plate ribs and the reinforcing ribs, so that light weight and high rigidity are considered.

The invention discloses a test place personnel management and control method based on deep learning. A data acquisition module, a personnel identity registration module, a workshop personnel identity recognition module, a dangerous place access people counting module and a detection result visualization module are included. The data acquisition module transmits the real-time video of the camera to the software front end for display; the personnel identity registration module performs face detection based on a RetinaFace improved model; the work cell personnel identity identification module is used for realizing identification of personnel identities in a work cell on the basis of a RetinaFace improved model and an Insight Face network; the dangerous place entering and exiting people counting module counts the number of people entering and exiting the dangerous place in real time based on a YOLOv5 target detection algorithm and a DeepSort multi-people tracking algorithm; and the detection result visualization module is used for displaying the video detection result processed by the deep learning algorithm in real time in a software front-end interface. The method has the advantage of light weight, can be deployed at a mobile terminal or an embedded terminal, and widens the application range of the algorithm while reducing the hardware cost.

The utility model provides an integrated bearing and an RV speed reducer using the same, the integrated bearing comprises an integrated bearing a, and a plurality of groups of integrated bearings b and integrated bearings c which are uniformly distributed along the circumferential direction of the integrated bearing a; the integrated bearing a comprises a pin wheel housing, an output side flange, an input side flange, a bearing inner ring, a rolling body and a retainer; the integrated bearing b comprises an eccentric high-speed shaft, an output side flange, a rolling body and a retainer; the integrated bearing c comprises an eccentric high-speed shaft, an input side flange, a rolling body and a retainer; the pair of bearing raceways is arranged on the pin wheel housing and the eccentric high-speed shaft, and the pair of bearing raceways is machined by adopting one-time clamping, so that the pair of bearing raceways have high coaxiality when being synchronously supported and rotated, and the stability of the bearing in the rotating process is ensured.

The present invention discloses a portable temperature-controlled compress heater, comprising a portable bag, a heating box, a hanging strap and a box cover, wherein a zipper is sewn on one side of the upper end of the portable bag, and a winding groove is opened on one side of the lower end of the portable bag, a storage bag is sewn on the upper side of the winding groove, the upper and lower sides of the storage bag are open, a binding strap is sewn on the upper side of the storage bag, one end of the binding strap is buckled on a button on the outer side of the portable bag, and limiting belts are fixed by sewing on both sides of the bottom end of the storage bag, and the limiting belts are fixed by buttons, a heating box is placed inside the portable bag, a lower fixing rod is fixed to the inner bottom end of the heating box by welding, and the lower fixing rods are connected to the upper fixing rods by placing plates and telescopic rods. The present invention increases the comfort of patients in the application of wet compresses and improves the effect of hot wet compresses. The improved compress heater is light in size, simple to operate, low in cost, and easy to clean.

The invention discloses a ship-based unmanned aerial vehicle auxiliary landing system suitable for a remote water surface, and relates to the technical field of unmanned aerial vehicles. The ship-based unmanned aerial vehicle landing assisting device comprises a ship-based unmanned aerial vehicle and a base, an electromagnetic adsorption assembly is rotationally installed at the top of the base, a rotary connecting assembly is rotationally installed at the bottom of the ship-based unmanned aerial vehicle, and after the electromagnetic adsorption assembly is powered on, the rotary connecting assembly and the electromagnetic adsorption assembly attract each other to achieve ship-based unmanned aerial vehicle landing assisting; a pneumatic fisheye lens monitoring assembly is installed at the bottom of the ship-based unmanned aerial vehicle. According to the unmanned aerial vehicle landing platform, butt joint of the unmanned aerial vehicle and the landing platform is achieved in an electromagnetic attraction mode through the arranged electromagnetic attraction assembly, the control difficulty of the unmanned aerial vehicle on the flight attitude in the complex sea condition is reduced, and the rotary connecting assembly rotates in the butt joint process to resist external interference airflow; the unmanned aerial vehicle landing device has the advantages of being easy to operate, simple in structure and low in cost.

The invention relates to lightweight thermal insulation concrete and a preparation method, and relates to the field of building materials, the lightweight thermal insulation concrete comprises the following components by mass: 60-100 parts of cement, 5-10 parts of modified SEBS, 20-40 parts of fly ash, 30-60 parts of ceramsite, 0.5-1.5 parts of a compound foaming agent, 10-20 parts of a modified cellulose filler, 0.005-0.015 part of a foam stabilizer, 0.5-1.5 parts of a water reducer and 30-50 parts of water; the modified SEBS is prepared from the following raw materials: an SEBS body, itaconic acid and allyl glycidyl ether. The preparation method comprises the following steps: mixing and stirring cement, modified SEBS, fly ash and modified cellulose filler, adding ceramsite, and stirring to obtain a dry mixture; preparing a water reducing agent solution, and preparing a foaming agent dispersion liquid; adding water into the dry mixture, stirring, adding a water reducing agent solution, and stirring to obtain a wet mixture; and adding the foaming agent dispersion liquid into the wet mixture, and carrying out pressure foaming to obtain the lightweight thermal insulation concrete. The method has the effect of improving the thermal insulation performance and the anti-cracking performance of the concrete.

The present application belongs to the technical field of geological disaster identification, and provides a tunnel construction geological disaster dynamic identification method and system, geological and structural response data in the tunnel construction process are acquired, and the data is cleaned and feature enhanced; a dynamic horizontal extension network learning model is used to extract image primary fusion features of the data, the features are mapped to feature nodes through random weight mapping, and part of the feature nodes are randomly mapped to enhanced nodes; in response to changes in the tunnel construction conditions, an incremental learning mechanism is triggered, the feature nodes and the enhanced nodes are incremented, and the acquired data is newly added, the number of the feature nodes and the enhanced nodes is dynamically adjusted according to the feature distribution and complexity of the newly added data; the feature nodes and the enhanced nodes are taken as inputs, and a geological disaster dynamic identification model is used to perform real-time discrimination of disaster types and risk level evaluation. The present application can realize real-time perception and dynamic risk prevention and control of tunnel construction geological disasters.