90results about How to "Effective support" patented technology

A fire risk dynamic assessment and early warning system based on K-class mean value clustering relates to the technical field of big data and artificial intelligence, and comprises a data acquisition module, a data processing module, a fire risk classification module, a fire risk assessment module, an early warning decision module and a feedback mechanism module. Through combination of clustering analysis and multi-factor evaluation, the system can quickly generate a risk evaluation result and timely give an early warning according to a preset threshold value. The efficient response mechanism can quickly inform related departments when the fire risk is aggravated, so that the safety of personnel and property is guaranteed.

The embodiment of the invention discloses a layered interval paste filling coal mining method for a'under three 'thick coal seam, and relates to the technical field of coal filling mining, the coal mining method comprises the following steps: dividing a thick coal seam to be mined into at least two mining layers along the vertical direction; the thickness of the thick coal seam is greater than 3.5 m; all the layers are mined from top to bottom in sequence; wherein a transportation crossheading, an air return crossheading and an open-off cut of each layer are tunneled and arranged, each mining layer is divided into a plurality of branch roadways, the branch roadways are mined by adopting a coal mining method of branch roadway jump mining and paste filling, and filling mining of a lower layer is carried out after a working face of the upper layer is completely mined and a filling body reaches expected strength to form an artificial roof. The embodiment of the invention is suitable for mining the thick coal seam with the thickness of more than 3.5 m.

The invention relates to an abnormal energy measurement data identification method and system based on time-frequency transformation, and the method comprises the following steps: S1, describing a randomness feature through analyzing the certainty features of four frequency spectrum aspects: frequency spectrum center frequency, frequency spectrum bandwidth, frequency spectrum energy and frequency spectrum phase, and four statistical features: mean value, variance, inclination and kurtosis; establishing an energy measurement data feature set; s2, taking the extracted features as input features, and constructing a training data set; s3, using an SVM algorithm to train an anomaly study and judgment matching model based on the training data set; s4, predicting a to-be-tested data set by using the trained anomaly study and judgment matching model to obtain abnormal data points; and S5, calculating an abnormal score of each abnormal data point by using a mahalanobis distance to represent an abnormal degree of the data point relative to normal data, and marking the abnormal data point on the time-frequency graph. According to the method, the accuracy and robustness of abnormal data detection can be improved, visual reminding is carried out, and the detection efficiency of workers is improved.

The invention provides a customer service navigation method and device, and relates to the technical field of computers. According to the specific scheme, incoming consultation of any user is monitored, target user features corresponding to the user are obtained, and real-time consultation texts of the user are collected; taking customer service staff in an idle state at the current moment as candidate customer service staff, and obtaining target customer service staff characteristics of each candidate customer service staff; inputting the target user feature, the real-time consultation text and the target customer service feature into a trained target network model to obtain a matching degree of a user output by the target network model and each candidate customer service; and determining a target customer service corresponding to the user from the candidate customer service according to the matching degree, and distributing the real-time consultation text of the user to a customer service window corresponding to the target customer service. According to the method, the user can be matched with the target customer service most suitable for their requirements, the user is ensured to obtain the professional service most matched with their requirements, the specific requirements of the user are met, and the user experience is enhanced.

The utility model relates to the technical field of borehole stress monitoring, and discloses a borehole stress meter. The borehole stressometer comprises a stressometer body, a guide assembly and an elastic connection assembly. Wherein the stressometer body is used for collecting stress data; the guide assembly is arranged on the side surface of the stress meter body, and an installation gap is formed between the guide assembly and the stress meter body; the elastic connection assembly is arranged in the installation gap, and two ends of the elastic connection assembly are respectively connected with the stress meter body and the guide assembly, and the elastic connection assembly is used for pressing the guide assembly to the side wall of the monitoring hole, so that the guide assembly abuts against the side wall of the monitoring hole. In the process of installing the borehole stressometer in the monitoring hole, the elastic connecting assembly can press the guide assembly to the side wall of the detection hole, so that the guide assembly abuts against the side wall of the monitoring hole, and the problems that the borehole stressometer in the prior art adapts to the aperture size and the pothole hole wall during installation and the installation levelness cannot be guaranteed are solved.

The invention discloses a relay, which comprises a shell, a magnetic circuit part, a contact part and a pushing part, and is characterized in that the magnetic circuit part is mounted on the shell and comprises at least two magnetic circuit units; the contact part is arranged on the shell and comprises a movable spring group, a static contact group and a load terminal; the movable spring groups and the static contact groups are arranged corresponding to the magnetic circuit unit, and each movable spring group is provided with a movable contact group corresponding to the static contact group; each movable spring group and the corresponding static contact group jointly form a switch; the movable spring group and the static contact group in each switch are respectively connected with different load terminals, and at least one load terminal is shared by at least two switches and forms a common terminal; and the pushing part comprises a pushing piece accommodated in the shell, the pushing piece and the magnetic circuit unit are correspondingly arranged, and the pushing piece is driven by the corresponding magnetic circuit part to drive the corresponding movable spring group, so that the movable contact group and the corresponding static contact group are closed or opened. By adopting the technical scheme, the occupied space is smaller than that in the prior art for realizing the functions of more than two switches.

The invention provides a fan foundation high-strength grouting material supporting and intelligent maintenance system which comprises a supporting structure and an intelligent maintenance structure, the supporting structure comprises steel formworks distributed around the circumference of the side edge of a fan foundation high-strength grouting material, and gaps between the upper ends of the steel formworks and the side face of the fan foundation high-strength grouting material are filled with elastic pieces; the intelligent maintenance structure comprises a sensor, a controller and a maintenance cover capable of containing the fan foundation, a keel support is arranged on the inner side of the maintenance cover, a heat preservation layer is arranged in the maintenance cover, a plurality of water pipes with sprayers are arranged at the position, at the upper end of the fan foundation, in the maintenance cover, and a heater is arranged in the middle of the maintenance cover. A sensor is arranged on the fan foundation high-strength grouting material and used for detecting temperature or / and humidity, and the controller is used for controlling actions of the heater or / and the spray head according to detection results of the sensor. The supporting and intelligent maintenance functions of the high-strength grouting material of the fan foundation can be achieved.

The invention relates to the technical field of anchoring agents, and discloses an intumescent resin anchoring agent. The invention relates to an intumescent resin anchoring agent which is formed by compounding intumescent resin mortar and an intumescent curing agent according to the mass ratio of (4-8): 100. Wherein the expansive resin mortar is prepared from the following raw materials in parts by mass: 150 to 250 parts of unsaturated polyester resin, 730 to 830 parts of stone powder, 18 to 23 parts of thixotropic agent, 2 to 4 parts of accelerant and 3 to 10 parts of expanding agent A; and the intumescent curing agent comprises the following raw materials in parts by mass: 90-190 parts of a curing agent and 3-18 parts of an expanding agent B. The expansive type resin anchoring agent disclosed by the invention has excellent expansive performance and bonding strength, can be used for filling fractured rock masses and can be bonded with ore bodies under the condition of complex broken soft rocks, and effective supporting of the ore bodies is realized.

The invention discloses a dune buggy storage battery heat dissipation mounting box and a dune buggy, and relates to the technical field of dune bugs.The dune buggy storage battery heat dissipation mounting box comprises a buggy body, a seat frame is arranged on the outer surface of the back side of the buggy body, a seat cushion is arranged on the outer surface of the upper end of the seat frame, and a lifting handle is arranged at the front end of the seat cushion; a movable rotating shaft is arranged between the saddle cushion and the saddle frame, a battery containing bin is arranged on the inner side of the saddle frame, a battery mounting box is arranged in the battery containing bin, and a battery body is arranged in the battery mounting box. According to the dune buggy storage battery heat dissipation mounting box and the dune buggy, the vehicle storage battery can be mounted through the arranged vehicle seat frame, the battery containing bin is located at the bottom of the vehicle seat, and the battery mounting box arranged in the battery containing bin can be used for mounting the battery; and the battery can realize an effective heat dissipation effect through a plurality of groups of heat dissipation assemblies arranged on the outer side of the battery mounting box, so that the stability and the safety of the operation of the battery in a high-temperature environment are guaranteed.

The utility model provides a high-strength modularized steel structure supporting frame which comprises a supporting stand column, a butt joint module, an extending stand column, a cross beam installation module and a steel structure cross beam, the butt joint module is fixedly installed on the top of the supporting stand column, and the extending stand column is fixedly installed above the butt joint module. The cross beam mounting module is fixedly mounted on the outer side of the butt joint module; the steel structure cross beam is fixedly mounted at the outer end of the cross beam mounting module; the butt joint module and the beam installation module are arranged, the installation module is arranged, the installation process is simple and rapid, adjustment can be conducted, and the installation position of the steel structure can be adjusted according to needs.

The invention discloses a construction method for matched use of a split type anchor rod drill carriage and a heading machine, which comprises the following steps: the heading machine reaches a head-on working face and cuts the upper part of the working face, and the split type anchor rod drill carriage grabs a separated type support platform with a steel mesh and a steel belt; the separated supporting platform reaches the interior of the cutting space, and supporting legs are opened to temporarily support a top plate; the split type anchor rod drill carriage and the split type supporting platform are unhooked and retreat, and the heading machine continues to cut the lower portion of the working face; the split type anchor rod drill carriage carries out supporting operation; after the supporting operation is completed, the heading machine is driven to the working face to continue the construction of the next cycle; the defect that a single-rail hydraulic anchor rod drill carriage is used in cooperation with a heading machine is overcome, the separated supporting platform is fully utilized, and through separation and combination, construction safety is guaranteed, and roadway heading efficiency is improved.

The utility model discloses a road asphalt crack sealing machine which comprises a material tank, a cover plate is movably connected to the top of the material tank, an asphalt pump is fixedly connected to one side of the material tank, a discharging pipe is fixedly connected to one side of the asphalt pump, a screw is rotated anticlockwise and loosened, and a sliding arm and a shade are moved to the position needing to be protected in cooperation with a U-shaped limiting hole. The cover plate is opened, asphalt raw materials are put into the material tank, the push rod is held to be matched with the rolling wheel to move the device to the position above the groove, then the air pump is started to blow and clean small chippings in the groove, the asphalt pump is started to inject asphalt in the material tank into the groove through the discharging pipe, and the device is pushed to move above the groove. And fine chippings sputtered from the grooves are shielded by the shielding cover and the inner plate, and naturally fall off after losing kinetic energy, so that the situation that the chippings sputtered at a high speed strike the skin of an operator to cause discomfort is effectively reduced, and the safety of constructors is guaranteed.

The utility model discloses a park security monitoring device based on Internet of Things, and relates to the technical field of security equipment, the park security monitoring device comprises a base, the top surface of the base is fixedly provided with a fixing rod, the top surface of the fixing rod is fixedly provided with a connecting block, the connecting block is T-shaped, the connecting block is provided with a communication module through a fixing piece, and the communication module is connected with the base. Fixing rings are fixedly mounted on the two side walls of the connecting block correspondingly, mounting bases are arranged in the two fixing rings correspondingly, protective shells are fixedly mounted on the bottom surfaces of the two mounting bases correspondingly, and the two mounting bases and the protective shells are fixedly mounted below the fixing rings through four supporting frames correspondingly; through the cooperation of the high-definition camera and the infrared camera, the all-weather monitoring function is realized, meanwhile, through the design of the cleaning assembly and the power supply assembly, the long-term stable operation and the clear monitoring effect of the device are ensured, the whole device is compact in structure and complete in function, and powerful support is provided for the security work of the park.

The utility model provides a tree planting frame capable of preventing water and soil loss. The tree planting frame capable of preventing water and soil loss comprises two semicircular surrounding plates, the two semicircular cone plates are fixedly mounted at the bottoms of the two semicircular surrounding plates respectively; the two arc-shaped positioning plates are fixedly mounted on the two semicircular surrounding plates respectively; the two lifting mechanisms are arranged on the two semicircular surrounding plates correspondingly, and the two lifting mechanisms are used for adjusting the heights of the two supporting and positioning mechanisms; and the two supporting and positioning mechanisms are arranged on the two lifting mechanisms correspondingly, and the two supporting and positioning mechanisms are used for supporting and fixing a tree. The tree planting frame capable of preventing water and soil loss has the advantages of being capable of preventing water and soil loss, having the function of supporting and fixing trees and being suitable for trees of different heights and thicknesses.

The present application relates to electronic digital data processing, and discloses a method for realizing a universal transmission interface of audio data, an audio device, and a storage medium, including: based on a clock module, receiving or generating a bus protocol clock, and generating an internal first clock signal and a second clock signal; based on a synchronization module, receiving or generating a synchronization signal; using the first clock signal as the clock of a first logic module and a first counter, using the second clock signal as the clock of a second logic module and a second counter, and capturing the rising edge of the synchronization signal as a trigger signal; when the first counter is triggered, the first logic module receives serial data from the bus of the audio interface for storage; when the second counter is triggered, the second logic module reads out multi-bit wide audio data from a storage unit for transmission. The present application aims to realize a universal transmission interface of audio data supporting multiple audio protocols in a low-cost manner.

The present invention discloses a fixed white rot fungus bioreactor and a method for treating pharmaceutical wastewater using the same, and belongs to the technical field of pharmaceutical wastewater treatment. The fixed white rot fungus bioreactor provided by the present invention is provided with a packing layer, a filter material layer, an aeration layer and a drainage layer from top to bottom, a water distribution pipe is provided on the top of the packing layer, and a water outlet pipe is provided on the side wall of the drainage layer; the packing layer is used to carry white rot fungi, and the packing of the packing layer is a granular packing, which is obtained by mixing sawdust, copper and iron filings and adhesives, pressing into granules, and drying; the drainage layer is composed of a drainage ditch cast by concrete, and the drainage ditch is connected to the water outlet pipe. Through the joint action of the packing layer, the filter material layer, the aeration layer and the drainage layer, it can ensure long-term stable operation, high pharmaceutical wastewater treatment efficiency and good wastewater treatment effect, without the need for frequent packing replacement.

The utility model provides a soft rock fully mechanized coal mining face roadway supporting structure which comprises a mining roadway supporting section, a supporting section and a supporting section. The advance roadway supporting section is used for supporting an advance roadway located in front of a stoping roadway, the advance roadway is provided with a center face, the advance roadway is divided into a stoping side and a non-stoping side by the center face, the advance roadway supporting section comprises a plurality of anchoring sets, and at least one anchoring set is arranged on a top plate, close to the center face, of the stoping side. The rest anchoring groups are distributed on a top plate and a side wall of a non-stoping side at intervals along the circumferential direction of the advance roadway; the mining roadway supporting section and the anchoring set are each at least composed of a plurality of anchor cables. According to the technical scheme, the problem that in the prior art, the supporting effect is poor when a single hydraulic prop is adopted for advance supporting of a machine roadway can be solved.

The invention belongs to an ultrahigh side slope revetment supporting structure suitable for different soil layers and a construction method. According to the ultrahigh side slope revetment supporting structure and the construction method, supporting schemes of all areas are designed according to geological exploration and supporting area division of an ultrahigh side slope; the supporting method that locking anchor rods, system anchor rods, pre-stressed anchor cables, an outer sealing and spraying concrete layer and inner cement grouting are combined is used for clay and gravel soil areas, and the supporting method that anchoring steel meshes and locking anchor rods are combined is used for rock areas. The overall stability and safety of the supporting structure can be greatly improved, and potential landslide and collapse risks are reduced. The method is high in adaptability, can cope with various different geological conditions, can achieve effective supporting on clay layers, gravel layers and other complex soil layer structures, and can be used in regions with complex geological conditions or varied regions.

The utility model provides a kind of multi-head adjustable support node and foundation pit multi-node support structure, solve the problem that the fixed angle foundation pit support node in prior art cannot adapt to special-shaped foundation pit, and then cause to increase construction difficulty, affect the problem of supporting effect;Wherein multi-head adjustable support node, comprising: fixed rod and more than one steering piece, steering piece includes first hinged component and second hinged component, one end of first hinged component is hinged with one end of second hinged component, and the other end of first hinged component is fixed with fixed part;More than one connecting rod, one end of connecting rod is fixed with the other end of second hinged component, fixed rod is fixed with a support rod, and is connected with other support rod by the other end of connecting rod, adjust steering piece, drive other support rod to rotate, to adapt to the supporting scene of multiple angles, increase support distance and operation space becomes larger, convenient for construction, and reduce support rod consumption, save supporting cost.

The invention discloses a long-distance temporary supporting device for a fully-mechanized excavation roadway. The long-distance temporary supporting device comprises a plurality of gate-type supports arranged side by side. Migration mechanisms are arranged among the door-type supports, so that the door-type supports in the odd-numbered rows and the door-type supports in the even-numbered rows alternately move; a forepoling bar mechanism is arranged at the top end of the gate-type support located at the foremost end and used for supporting a roadway roof; a roadway clearing mechanism is arranged at the bottom end of the gate-type support located at the foremost end and used for trimming the ground in the advancing direction of the gate-type supports; side supporting mechanisms are arranged on the two sides of the top end of the gate-type support located on the rear portion and used for supporting the side wall of the top of the roadway. The trimming structure and the supporting structure are orderly combined, so that the stability of the surrounding rock of the roadway is effectively maintained, the trimming structure and the roadheader can work in parallel, the continuous operation of the roadheader is realized, and the tunneling efficiency of coal mining operation is effectively improved.

The utility model provides a construction formwork reinforcing device easy to position, which relates to the technical field of formwork reinforcing and comprises an adjusting T-shaped rod, adjusting structures are arranged at two ends of the adjusting T-shaped rod, sliding support blocks are arranged at two ends of the adjusting T-shaped rod, and sliding T-shaped grooves are formed in the sliding support blocks. Meanwhile, a sliding supporting block is slidably installed on the outer side of the adjusting T-shaped rod through a sliding T-shaped groove, a sliding supporting hole is formed in the sliding supporting block, a locking inserting column is slidably installed in the sliding supporting hole, a limiting inserting hole is formed in the adjusting T-shaped rod, and meanwhile one end of the locking inserting column is inserted into the limiting inserting hole. By means of the arrangement of the adjusting structure, adjustment and use can be conveniently conducted according to the size of a site formwork, by means of the arrangement of the reinforcing structure, operation of workers is facilitated, the device can be used by both a circular formwork and a square formwork, the applicability of the device is improved, and by means of the arrangement of the supporting structure, the device is convenient to use. And the reinforcing effect on the formwork is further enhanced.

The invention relates to the technical field of circuit board processing, and particularly discloses a circuit board mold drilling machine positioning structure which comprises a positioning base, the top of the positioning base is fixedly connected with a guiding positioning assembly, and the outer side of the guiding positioning assembly is fixedly connected with a size adjusting assembly. A pushing assembly is installed on the inner side of the size adjusting assembly, the guiding and positioning assembly comprises a first positioning disc, the top of the first positioning disc is fixedly connected with an adsorption positioning assembly, and the outer side of the adsorption positioning assembly is fixedly connected with a positioning block; in the diffusion process of the edge adjusting assembly, the corner adjusting assembly can be diffused synchronously, and the top of the sliding supporting strip, the top of the guide plate and the top of the first L-shaped plate are located on the same plane, so that the bottom of a circuit board can be effectively supported, punching work is facilitated, and the production efficiency is improved. And the included angle of the corner adjusting assembly can be positioned through the positioning adhesive tape according to actual processing requirements.

The invention relates to a water-based anticorrosive primer and a preparation method thereof. The water-based anticorrosive primer comprises the following materials in parts by weight: 60-70 parts of zinc powder modified epoxy resin, 15-20 parts of modified zinc oxide, 8-10 parts of nano silicon dioxide, 3-4 parts of titanium dioxide, 0.5-1 part of a defoaming agent, 1-2 parts of a dispersing agent, 5-7 parts of a curing agent and 25-30 parts of water. The preparation method comprises the following steps: preparing the zinc powder modified epoxy resin and the modified zinc oxide, weighing the raw materials, mixing and stirring the zinc powder modified epoxy resin, the modified zinc oxide, the nano silicon dioxide and the titanium dioxide for 10-15 minutes, then adding the defoaming agent, the dispersing agent, the curing agent and the water, continuously stirring for 30-40 minutes, and uniformly mixing, thereby obtaining the paint. According to the water-based anti-corrosion primer and the preparation method thereof, the anti-corrosion performance of the water-based anti-corrosion primer is effectively improved, the drying speed is increased, and the phenomena of sagging, sedimentation and the like are reduced.

The present application discloses a mine coal mining tunneling device, system and method, relates to the field of mine coal mining equipment, and comprises a tunneling machine, a tunneling arm is installed on the tunneling machine, a tunneling drill bit is installed on the tunneling arm, a conveying device is installed in the tunneling machine, a material collecting device is installed on the tunneling machine, the material collecting device is located below the tunneling drill bit, and two feeding rotating frames are installed on the material collecting device. It should be noted that in the embodiment of the present application, the setting of the expansion device and the linkage device can fully collect the mined coal, avoid the scattering of the coal to pollute the environment of the mine, when the tunneling machine is tunneling, the two side support frames can support the sidewalls of the mine, the top support frame can support the top wall of the mine, effective support of the mine can be achieved, and accidents such as collapse can be avoided during tunneling, so that the use of the tunneling machine is safer.

The present invention discloses an automatic irrigation control device, comprising a water control chamber located below a water storage chamber, wherein a water control tank is arranged in the water control chamber; a water pipe is arranged in the water storage chamber, and the lower end of the water pipe sealably passes downward out of the water storage chamber and extends to the top of the water control tank opening; the device is characterized in that the water pipe is a hose and its length exceeds the height of the inner cavity of the water storage chamber, a flow control float floating on the water surface is connected to the upper end of the water pipe, a limited flow hole is horizontally penetrated on the part of the flow control float immersed under the water surface, an air vent is vertically penetrated on the flow control float, and the air vent and the limited flow hole are cross-connected; the lower end of the air vent and the upper end of the water pipe are sealed and connected. The present invention can realize mechanical automatic water supply and irrigation of the irrigation network in a timely and quantitative manner. The irrigation control process reduces the dependence of the irrigation control process on electricity.

The utility model discloses a knee pad capable of dynamically protecting knee joints, which comprises a weaving cylinder communicated end to end, auxiliary ligament position composite fabrics are symmetrically arranged on two sides of the surface of the weaving cylinder, and memory metal material supporting pieces are arranged in the two auxiliary ligament position composite fabrics along the vertical direction. The opposite sides of the bottoms of the two auxiliary ligament position composite fabrics are jointly provided with a composite fabric pressure adjusting belt, a nanometer buffering material stabilizing piece is arranged on the weaving cylinder, and a patella position composite fabric cutting piece is arranged on the weaving cylinder. According to the utility model, the seamless integrated weaving cylinder, the U-shaped supporting structure and the composite fabric adjusting pressure belt can be always attached to the knee part in a motion state, and during use, the U-shaped supporting structure can effectively support and stabilize the patella without hindering the normal flexion and extension actions of the knee; the fitting degree can be adjusted according to the supporting position of the leg shape of the user through the adjustable composite fabric adjusting pressure belt and the nanometer buffering material stabilizing piece, and the protection effect is improved.

The invention belongs to the technical field of foundation pit supporting structures, and discloses a foundation pit earthwork rapid supporting structure which comprises a supporting plate, a rotating assembly is movably connected to the interior of the supporting plate, a hydraulic rod is fixedly connected to the top of an inner cavity of the supporting plate, and a limiting block is fixedly connected to the bottom end of the hydraulic rod. A first arc-shaped plate and a second arc-shaped plate are annularly arranged at the bottom of the supporting plate at equal 90 degrees; through cooperation of a rotating assembly, a limiting block, a first arc-shaped plate, a second arc-shaped plate and other structures, the circular foundation pit can be rapidly and conveniently supported, after a rotating disc rotates, the first arc-shaped plate and the second arc-shaped plate can be driven to linearly move towards the inner wall of the foundation pit under the circumferential limiting effect of a limiting groove, and the foundation pit can be conveniently supported. And after the first arc-shaped plate and the second arc-shaped plate are completely unfolded, a cylinder attached to the inner wall of the foundation pit can be formed, and therefore the effects that the device is rapidly and conveniently unfolded, and effective supporting is provided for the circular foundation pit are achieved.

This invention belongs to the field of ceramic slurry technology, specifically disclosing an alumina ceramic slurry, its preparation method, and its application. The alumina ceramic slurry comprises the following components by mass percentage: 5-8% acrylic resin composition, 0.1-0.3% dispersant, 8-14% resin solvent, 11-17% solvent, 0.93-1.42% inorganic sintering aid, and 59.28-74.97% alumina. The acrylic resin composition contains polydopamine-modified graphene material, acrylic resin, and ethyltoluenesulfonamide. The alumina ceramic slurry of this invention exhibits excellent stability, uniform dispersion, and casting performance. It does not crack or break during casting and can be matched with existing casting preparation processes. Its stability is 85-95%, its flowability is 120-140s, and its absolute Zeta potential is 30-33mV.

The present invention belongs to the field of foundation pit support, especially a foundation pit support structure and its construction method. In view of the existing problems, the following scheme is proposed, which includes a polygonal retaining wall panel, multiple faces of the retaining wall panel are fixedly connected with support seats, and a support mechanism is installed between two adjacent support seats; the support mechanism includes a horizontal plate, which is fixed at the corner of the retaining wall panel and located between two support seats, and the surface of the horizontal plate is fixedly connected with a vertical plate, and one side of the vertical plate is rotatably connected with a hydraulic cylinder. The present invention significantly enhances the overall stability through a clever double-layer support system and connection mechanism design, and can effectively cope with local deformation of the foundation pit. The structure ensures stable support strength and direction, and prevents the connection seat from tilting through an anti-slip component, further improving stability. Its high adaptability enables flexible adjustment according to the shape and size of the foundation pit, while simplifying the installation and maintenance process, reducing construction difficulty and cost.

The present invention discloses a method and system for automatically distributing early warning events for smart cities, and belongs to the field of smart city technology. The present invention obtains smart IoT sensor monitoring data to be analyzed for early warning, and performs attention processing on it to effectively extract key information, thereby forming sensor monitoring attention data. Then, the debugged AI decision analysis algorithm is used to deeply analyze the target abnormal event label information in the monitoring data, which not only reveals the multi-modal state trend of the event, but also evaluates the city interface energy level, so as to fully grasp the development trend and impact range of the abnormal event. Through characterization integration, an abnormal event linkage attribute vector is innovatively constructed, and this comprehensive indicator provides a scientific basis for early warning distribution. Finally, based on rich data support and precise vector analysis, the early warning distribution keywords are accurately marked, and efficient early warning event distribution processing is performed accordingly, which greatly improves the speed and accuracy of emergency response.