92 results about "Safety engineering" patented technology

The invention relates to the technical field of safety engineering, in particular to a tunnel unfavorable geologic body recognition system and method based on fused geological information, and the method comprises the steps: data collection and preprocessing, geological information quantification, sample set construction and enhancement, Faster-RCNN model construction of fused geological information, model training and optimization, and unfavorable geologic body intelligent recognition. The intelligent recognition of the unfavorable geologic body of the tunnel is realized by fusing the geological information and the seismic wave method imaging data and utilizing the convolutional neural network model, the recognition precision and robustness are effectively improved, and effective technical support is provided for tunnel construction safety early warning.

The invention discloses a roadway roof damage time prediction method and system, and belongs to the technical field of mine rock mechanics and safety engineering. Comprising the following steps: recognizing a roof rock stratum structure and lithology of each layer through drilling peeping, and drilling a representative rock sample; determining the crack initiation strength and peak strength of the rock sample through a uniaxial compression test; selecting a plurality of stress levels between the axial strain and the acoustic emission signal to carry out a creep test, synchronously monitoring the axial strain and the acoustic emission signal, and determining an accelerated creep starting moment as the damage time under the stress according to the abrupt change characteristics of the axial strain and the acoustic emission signal; establishing a stress-failure time relation model of each lithology; finally, selecting a corresponding model to predict the damage time of rocks at different layers of the roof according to the actual rock stratum structure and ground stress state of the roadway; according to the method, accurate and reliable time prediction of the progressive damage process of the roadway roof is realized.

The invention relates to the technical field of mine safety engineering and hydrogeological information processing, and discloses a multi-scale coal seam water spatial variation analysis and main control factor identification system for group-mine combined mining, which comprises a multi-source spatio-temporal data benchmark unification and preprocessing module for generating a standardized data set; the macro-micro orthogonal collaborative dynamic permeability tensor field construction module is used for establishing a permeability tensor field; a non-Euclidean hydraulic distance calculation module based on Riemannian manifold calculates a manifold hydraulic distance; a variable-lag embedded convergence cross-mapping causal identification module calculates causal coupling strength; a causal topology feedback driving model correction module iteratively corrects the model to convergence according to the difference; and the spatial variation characteristic analysis and main control factor output module outputs a main control factor list. According to the method, a causal topology feedback-driven model self-correction closed loop is constructed, a causal intensity reverse constraint physical model obtained through convergence cross mapping is used, and the problems that a traditional physical model cannot respond to mining-induced fracture evolution in real time, and pure data mining lacks physical interpretability are solved.

The invention relates to the field of coal mine safety engineering, and provides a coal mine gas control extraction effect dynamic evaluation and closed-loop control method, which comprises the following steps: S1, based on a basic threshold value in an extraction design scheme, periodically and dynamically calibrating the threshold value through a multiple linear regression model, and generating a dynamic threshold value matrix of a core index; s2, collecting multi-dimensional data to construct a fusion data matrix; s3, a dynamic multi-scale convolutional neural network model is constructed and trained, and the model comprises a variable-length filter generator which is used for adaptively generating a variable-length filter according to the input data so as to extract multi-scale time sequence features; outputting a standard state judgment result of the current extraction effect and a core index prediction value of a future preset time period in parallel; and S4, starting a three-level linkage feedback management and control flow coordinated by the AI model and the expert rule base according to the standard reaching state judgment result and the predicted value output in the step S3. Accurate evaluation and short-term prediction of core indexes such as the extraction flow, the gas concentration and the attenuation coefficient are achieved.

This invention discloses a power supply device for safety engineering equipment on construction sites, relating to the field of power supply devices. It includes a power cabinet and multiple batteries. The power cabinet is cylindrical with a notch on one side, where a side filter is installed. It should be noted that, in this embodiment, when the batteries are in use, the radial layout effectively increases the gap between batteries while ensuring the number of batteries is sufficient, increasing airflow and improving heat dissipation. A combination of central heat dissipation and rotating lateral heat dissipation ensures uniform heat dissipation for each battery, eliminating localized hotspots, improving heat dissipation efficiency, extending battery life, and reducing maintenance costs and replacement frequency. Furthermore, the sliding filter plate can slide open, directly exposing the batteries to further enhance heat dissipation. When not dissipating heat, it closes, providing ample protection against dust, moisture, and impact.

The utility model discloses a ventilation device for safety engineering of industry and trade enterprises, which comprises a ventilation pipeline, an air inlet and an air outlet, the protective screen plate is arranged at the position of an air inlet of the ventilation pipeline, and the protective screen plate is detachably connected with the ventilation pipeline; the air guide fan is arranged at the position, away from the air inlet, in the ventilation pipeline and used for guiding air; and the filtering assembly is arranged in the ventilating pipeline, is close to the air inlet and is used for filtering air. According to the ventilation device for the safety engineering of the industrial and trade enterprises, through the structural matching design of the ventilation pipeline, the protective screen plate, the air guide fan and the filtering assembly, the device can filter ventilated air, the situation that fluff drifts around to influence the environment is avoided, and through the structural design of the filtering assembly, the ventilation effect is improved. Therefore, the device can realize a double filtering effect and is convenient to replace and maintain.

The invention relates to the technical field of fire fighting, in particular to a self-adaptively adjustable fire-fighting tank auxiliary fire extinguishing device for safety engineering, which comprises a fire extinguishing tank and an injection pipe mounted at one end of the fire extinguishing tank, a nozzle is detachably mounted at one end of the injection pipe, and a core plate is fixedly arranged on the inner wall of the nozzle. A stage adjusting mechanism is arranged in the spray head and comprises a threaded barrel fixedly arranged on the outer wall of the injection pipe in a sleeving mode, the outer wall of the threaded barrel is in threaded connection with an adjusting sleeve, a movable frame is slidably arranged in the spray head in the vertical direction in a penetrating mode, and the top end of the movable frame abuts against the bottom end of the adjusting sleeve; according to the fire-fighting tank auxiliary fire extinguishing device, through flexible switching of a mist spraying mode and a columnar spraying mode, the fire-fighting tank auxiliary fire extinguishing device is suitable for various fire extinguishing scenes, the applicability of the fire-fighting tank auxiliary fire extinguishing device is effectively improved, a worker can conveniently and rapidly complete adjustment operation in an emergency fire, and the practicability is high. And the convenience of fire-fighting operation of safety engineering is further improved.

The present application belongs to the technical field of coal mine safety engineering, and particularly relates to a gas extraction blind area detection method and system based on three-dimensional space analysis and intelligent algorithm. The method is based on the secondary development of the AutoCAD platform. The system calls the AutoCAD ActiveX interface through VBA programming, realizes the automatic import of the extraction drilling data and three-dimensional modeling, and adopts the Bezier interpolation algorithm to construct the coal seam model under the influence of gas extraction. The present application realizes the automatic and high-precision detection of the gas extraction blind area, has high detection accuracy, greatly reduces the manual detection error, improves the coal mine gas control efficiency, and provides intelligent technical support for the prevention and control of gas disasters.

The invention relates to the technical field of safety protection, in particular to a protection device for well drilling safety engineering, which comprises a derrick and a drill column, a drill bit is fixedly connected to the bottom of the drill column, a drill floor is fixedly connected to the lower part of the derrick, protection plates are fixedly connected to the periphery of the bottom of the drill floor, a protection cavity is formed at the bottom of the drill floor, and each protection plate comprises an outer layer plate and an inner layer plate; a plurality of springs are arranged between the outer-layer plates and the inner-layer plates, the tops of the outer-layer plates are fixedly connected with the corresponding edges of the bottom of the drill floor, and the bottoms of the outer-layer plates are fixedly connected with the ground; the tops of the inner-layer plates are in sliding fit with the bottom of the drill floor, and transmission assemblies used for decomposing stress of the inner-layer plates to provide supporting force for the drill floor are arranged on the outer-layer plates. By means of the design of the protection plate of the double-layer structure, buffering is formed on impact of drilling splash, the service life of the protection plate is prolonged, and meanwhile the impact force of the splash is converted into supporting force on the drill floor through the transmission assembly so as to reduce vibration of the drill floor.

The utility model relates to the field of automobile safety engineering, in particular to a collision simulation test device for an automobile anti-collision beam. The utility model provides a collision simulation test device for an automobile anti-collision beam, which can conveniently adjust the horizontal angle and the inclination angle of a collision block and can conveniently evaluate the safety performance of an automobile under different collision conditions. An automobile anti-collision beam collision simulation test device comprises a bottom frame, supporting frames, supporting rods and the like, the front supporting frame and the rear supporting frame are connected to the upper side of the right portion of the bottom frame, and the multiple supporting rods are connected to the upper side of the middle of the bottom frame. A double-shaft motor is started to drive a moving wheel to rotate, so that an impact block moves, the horizontal angle of the impact block is adjusted, then a first air cylinder is started to drive a supporting plate to rotate upwards, a rotating block and a connecting piece rotate, and the inclination angle of the impact block is adjusted; and the effects that the horizontal angle and the inclination angle of the collision block can be conveniently adjusted, and the safety performance of the vehicle under different collision conditions can be conveniently evaluated are achieved.

The invention provides an arrangement optimization method for a multi-stage energy absorption component of a low-altitude logistics unmanned aerial vehicle. The method belongs to the crossing technical field of low-altitude intelligent equipment safety engineering and structural dynamics. The method comprises the following steps: carrying out regional function division on an unmanned aerial vehicle body based on a safety cabin and collapse frame integrated architecture, and generating internal safety cabin regional data and external collapse frame regional data; according to a regional function division result, deploying an initial topological structure of the multi-stage energy absorption component, and constructing an initial energy absorption component layout network; even under the inevitable falling working condition, the structure can still absorb most of kinetic energy through the external collapse area, and the peak acceleration to a ground target is reduced.

The utility model relates to the technical field of mine safety engineering, and discloses a ventilation performance detection device for mine safety engineering, which comprises a main body cabinet, the upper surface of the main body cabinet is fixedly connected with a supporting frame, the inner wall of the supporting frame is fixedly connected with a detection chamber, one end of the detection chamber is fixedly connected with a filtering device, and the other end of the detection chamber is fixedly connected with a ventilation device. Through the arrangement of the filter device and the dust cover, the device can protect sensitive detection elements in a severe mine environment and reduce interference of dust and impurities, so that more accurate ventilation performance data is obtained, a visual user interface is provided by the design of the control panel, and the device is more convenient to use. According to the mine safety monitoring device, an operator can easily monitor and adjust equipment setting, the working efficiency is improved, the device is allowed to flexibly move in a mine through the design of the moving wheels and the triangular supporting plate, and meanwhile the stability under various terrain conditions is guaranteed.

The invention relates to the technical field of coal mine safety engineering, in particular to water injection equipment and a water injection method for a strong-adhesion difficult-to-wet three-soft coal seam. The equipment systematically integrates a water injection pressure adjusting device, a moistening agent adding device, a water injection monitoring device and a protection device. According to the invention, by constructing a closed-loop feedback intelligent water injection system, the technical bottlenecks of poor water injection wettability, non-uniform water transverse dispersion and sweating or water leakage caused by easy plastic deformation of the coal wall due to complex coal body pore structure and low surface free energy in the strong-adhesion and difficult-to-wet three-soft coal seam are effectively solved; the dust falling efficiency and the engineering reliability of coal seam water injection are remarkably improved, and meanwhile the synergistic enhancement effect on coal mine rock burst prevention and control is achieved.

1. The name of the design product: more thematic graphical user interface for electronic equipment. 2. The use of the design product: the design product is used for an electronic device. 3. The design points of the design product: the graphical user interface content. 4. The picture or photo that best indicates the design points: change state figure 1. 5. The use of the graphical user interface: the main view is the graphical interface displayed when the user enters the provincial city lifeline safety engineering supervision platform; change state figure 1 is the graphical interface displayed after the user correctly logs in by clicking the "login" option in the main view; change state figure 2 is the graphical interface displayed after the user moves the mouse to "more topics".

The invention discloses a fault identification and risk management system for an electrochemical energy storage system, and belongs to the technical field of energy storage safety. Aiming at the problems that complex faults are difficult to process and thermal runaway is easy to cause in traditional threshold or model diagnosis, a diagnosis framework combining natural language processing and safety engineering is provided. The method comprises the following steps: constructing a fault database and generating a rare fault supplementary sample by using a large language model; semantic representation is formed through word segmentation, word vector embedding and feature extraction; adopting a self-attention enhanced convolutional neural network and introducing a dynamic learning rate to realize fault classification; through combination of Bow-Tie and failure mode analysis, prevention measures, emergency response and consequence evaluation are automatically output. According to the method, complex faults such as communication anomalies can be identified with high precision, the training convergence is fast, the calculation requirement is low, the method can be deployed in a battery management system, an edge server and a cloud edge collaborative architecture, real-time intelligent diagnosis and risk control are realized, and the safety and operation reliability of an energy storage system are improved.

The utility model discloses a foldable protective fence for safety engineering, relates to the technical field of protective fences, and aims to solve the problems that the protective effect is weakened due to a larger gap when the foldable protective fence is unfolded and the foldable protective fence is easy to topple over when the foldable protective fence is placed on an uneven ground. The same crosspiece mechanism is arranged on the outer walls of the rear ends of the two supporting frames, and leveling assemblies are arranged on the outer walls of the front ends of the two supporting frames; the two supporting frames are pulled to drive the cross-shaped folding frame to be unfolded, so that the sleeves slide on the outer surfaces of the sleeve rods, after the corresponding sleeves are locked by rotating the nuts, through cooperation of the multiple sleeve rods and the sleeves, gaps formed after the cross-shaped folding frame is unfolded are reduced, the pull blocks are pulled to drive the positioning blocks to enter the receding grooves, and therefore the cross-shaped folding frame is folded. The supporting seats slide to drive the sliding rods to move, and after the pull blocks are loosened, the positioning blocks are pushed to be inserted into the corresponding positioning grooves under the action of the springs, so that the two supporting frames are located on the same level.

The utility model relates to the technical field of building construction lifting appliances, and particularly discloses a safety protection lifting appliance for building safety engineering, which comprises a shell, a motor arranged on the shell, a roller arranged in the shell and driven by the motor, a cable wound on the roller and a lifting hook arranged on the cable, the fixed disc and the shell are mutually fixed, the rotary disc and the roller coaxially rotate, a plurality of clamping hooks are arranged on the rotary disc, a plurality of clamping grooves allowing the clamping hooks to be clamped therein are formed in the fixed disc, and when the rotating speed of the roller exceeds a set threshold value, the clamping hooks are clamped into the clamping grooves, and the clamping hooks are clamped into the clamping grooves. According to the electric hoist, the safety protection performance of the electric hoist can be effectively improved, safety accidents are avoided, the personnel safety in the construction process and the use period of a building is effectively ensured, and economic losses caused by the accidents are reduced.

The invention discloses a design method of an expressway maintenance construction area control safety management system, and relates to the technical field of construction safety engineering, and the method comprises the steps: collecting multi-dimensional dynamic data of an expressway maintenance construction area in real time, constructing a multi-dimensional interference factor model, and generating a dynamic interference index of the expressway maintenance construction area; based on historical construction accident records of the expressway, constructing an expressway high-risk period prediction model; associating and pairing vehicle navigation systems, pushing an optimal detouring path, and dynamically adjusting traffic measures of a construction area; for safety protection of constructors, the constructors wear smart bracelets to monitor physical indexes of the constructors in real time and evaluate physiological change conditions of the constructors, if abnormity is found, a construction area traffic organization scheme is automatically optimized, people-road-vehicle safety collaborative management and control are realized, and a safety management scheme of the expressway maintenance construction area is generated. The method has the beneficial effect that efficient and safe operation of highway maintenance construction is promoted.

The invention discloses a method for predicting and evaluating corrosion fatigue residual life of an oil pipeline, and belongs to the technical field of structural integrity management and safety engineering of oil and gas conveying pipelines. Comprising the following steps: acquiring pipeline corrosion defect original data, carrying out defect merging and identification to obtain a defect sample set, selecting a target defect sample, and obtaining the defect depth of the target defect sample at the detection moment; based on the defect sample set, statistical modeling is carried out on the corrosion defect depth, the maximum defect depth in a preset service period is obtained through prediction, and safety margin evaluation is carried out; constructing an electrochemical corrosion life model fused with a temperature-soil resistivity correction factor to predict the residual life; and carrying out pipeline residual strength evaluation and decision making by adopting an optimized ASME B31G standard and an SY / T 6151 standard. According to the method, all links are seamlessly connected, a complete solution from theory to practice and from technology to economy is provided, the operation and maintenance cost is effectively reduced, and the pipeline safety management level is improved.

The utility model relates to the technical field of safety engineering dust fall, in particular to a dust fall device for chemical production safety engineering, which comprises a water tank, the outer ring surface of a water accumulation ring is fixedly connected with the inner ring surface of a gas gun tube, and an atomizing nozzle is arranged on the inner ring surface of the water accumulation ring; the dust falling device for the chemical production safety engineering has the advantages that water is conveyed into the water accumulation ring by starting the high-pressure pump, then water mist is sprayed out through the atomizing nozzle, the draught fan is arranged in the air pipe, when the draught fan is started, air flow is generated in the air pipe and the air gun pipe, and dust falling is achieved. The throttle valve is driven by the rotating rod to rotate by an angle in the air pipe, so that the flow speed of the airflow passing through the interior of the air pipe can be controlled through the rotation of the throttle valve; therefore, the dust falling distance of water mist spraying at the output end of the atomizing nozzle can be adjusted by controlling the airflow of the air pipe.

1. Name of the product in this design: Safety Fence (Safety Engineering). 2. Purpose of this design: For safety protection during engineering construction. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention relates to the technical field of mine safety engineering, in particular to mechanical coal field fire extinguishing equipment which comprises a rack sleeve, a hinge end is arranged on the outer cambered surface of the rack sleeve, an abutting end is arranged in the middle of the inner cambered surface of the rack sleeve, a step end is arranged at the position, close to the abutting end, of the rack sleeve, and the inner cambered surface of the step end is sleeved with a sealing cover. The inner arc face of the sealing cover is sleeved with a fire extinguishing fluid conveying cavity, and a pressing sleeve is sleeved between the sealing cover and the fire extinguishing fluid conveying cavity. A conical outer partition cover and an inner arc cover face of the first-stage fire extinguishing mechanism surround a fire extinguishing area, fire extinguishing force can be concentrated, medium loss is reduced, directional conveying of a fire extinguishing medium is achieved through cooperation of a permeation suite and a ventilation sleeve, it is ensured that the fire extinguishing medium accurately acts on the core portion of the fire area, and fire extinguishing efficiency is improved. And a frame structure and a heat insulation cover net of the second-stage fire extinguishing mechanism can complementarily cover the edge and the gap area of the fire area and cooperate with the first-stage fire extinguishing mechanism, the fire extinguishing range is widened, the fire extinguishing efficiency is improved, and fire re-combustion is effectively avoided.

The utility model discloses an anti-explosion exhaust structure of an air conditioning system, and relates to the technical field of safety engineering, the anti-explosion exhaust structure comprises an exhaust pipe, a group of water collecting trays are fixedly arranged in the middle of the interior of the exhaust pipe, and atomizing nozzles for atomizing a neutralization solution are fixedly mounted at the bottoms of the two water collecting trays at equal intervals; a blocking plate used for changing the wind direction is fixedly installed above one end of the exhaust pipe, and a plate type separator used for collecting waste liquid is fixedly installed below the end, away from the blocking plate, of the exhaust pipe. The atomization nozzle is matched to atomize the neutralization solution and then make full contact with harmful gas to generate neutralization reaction, compared with pure vortex adsorption, the neutralization reaction can more directly and effectively remove harmful ingredients, and the possibility that the poisonous gas is discharged outdoors when not fully treated is reduced.

The utility model discloses a hoisting device for safety engineering, which relates to the technical field of engineering hoisting and comprises a bottom plate, moving wheels are symmetrically and fixedly arranged at four corners of the lower end of the bottom plate, balancing weights are symmetrically and fixedly arranged on two sides of the upper end of the bottom plate, and an adjusting mechanism is arranged in the middle of the upper end of the bottom plate. A reinforcing frame is fixedly arranged on the left side of the upper end of the bottom plate, a top plate is arranged at the top end of the adjusting mechanism, a transverse plate is arranged on one side of the lower end of the top plate, hooks are symmetrically and fixedly arranged on the two sides of the lower end of the transverse plate, and anti-falling mechanisms are arranged at the lower ends of the hooks. The lifting rod installed in a threaded mode can be pushed to move up and down through the rotating lead screw, the lifting rod can drive the winding disc and the hoisting plate to move synchronously through the top plate, the hoisting use height can be adjusted, hoisting can be conveniently carried out, meanwhile, when the height is large, the height can be conveniently reduced for daily maintenance, and the use effect of the device is improved.

This utility model relates to the field of safety engineering and emergency protection technology, and discloses an insulated lifting platform for live-line work on high-voltage transmission lines. It includes a chassis, a compression mechanism on the top center of the chassis, lifting rods fixedly connected to the left and right sides of the top of the chassis, a platform fixedly connected to an adjacent side of the two lifting rods, a protective mechanism on the top of the platform, two buffer blocks fixedly connected to the top of the chassis at their bottoms, and multiple Z-shaped rods fixedly connected to the top of the lifting rods at their bottoms. The left and right sides of the platform are slidably connected to adjacent sides of the two lifting rods. In this utility model, the air inside the telescopic column is rapidly compressed into the air compressor, causing adsorption blocks one and two to quickly adhere to the outer wall of the lifting rods. The pneumatic force rapidly triggers braking, significantly shortening the braking response time and improving platform safety.

The invention relates to the technical field of crossing of coal mine safety engineering and artificial intelligence, and provides a gas extraction and coal seam anti-reflection intelligent decision-making method based on a three-dimensional geological model, which comprises the following steps: extracting multi-dimensional geological parameters in a preset range of a working face to be mined and carrying out standardization processing to form a structured parameter matrix; inputting the structured parameter matrix into a pre-trained adaptive neural fuzzy inference system model, and outputting an extraction difficulty level score of the to-be-mined working face; according to the extraction difficulty level score, matching at least one gas extraction and coal seam anti-reflection technology combination from a preset structured measure library; and based on a mixed water circulation-moth fire optimization algorithm, engineering parameters in the matched technical combination are optimized, and an optimized gas extraction and coal seam anti-reflection construction scheme is output. According to the method, rapid and accurate optimization of multi-target engineering parameters is realized, and the scientificity and decision-making efficiency of a gas extraction scheme are remarkably improved.

The utility model relates to the technical field of ventilation devices, in particular to a ventilation device for safety engineering of industry and trade enterprises, which comprises a bottom plate, a side plate is fixedly mounted on the upper surface of the bottom plate, a top plate is fixedly mounted on the upper surface of the side plate, and a motor is fixedly mounted on the inner wall of the side plate. Through cooperation of a motor, a first fan, a threaded rod, a threaded plate, a telescopic conveying pipe and a conical opening, the output shaft end of the motor drives the threaded plate to move through the threaded rod, the threaded plate drives the conical opening to move through a clamping plate, and the position of the conical opening can be changed. The problems that in the prior art, a ventilation opening is formed in the side wall of a factory building to ventilate the interior of the factory building generally, the ventilation opening is fixed to the side wall of the factory building, when a certain position of the factory building needs to be ventilated, the whole factory building can only be ventilated for a long time, and fixed-point and positioned ventilation cannot be conducted on the certain position of the factory building basically are solved.

The invention relates to the technical field of pipeline safety engineering, and discloses an airlock air curtain for closing smoke and fire of a pipeline, which comprises an outer shell, an inner shell is coaxially sleeved in the outer shell, an upper cover plate and a lower cover plate are respectively assembled at two axial ends of the outer shell and the inner shell, and the upper cover plate and the lower cover plate are both of annular structures; the outer shell, the inner shell, the upper cover plate and the lower cover plate jointly define a closed cavity, an air inlet is formed in the side wall of one end of the outer shell, a slag discharging opening is formed in the other end of the outer shell, a closing valve is arranged on the slag discharging opening, a plurality of spiral air outlets are formed in the side wall of the inner shell in the circumferential direction, and the spiral air outlets are evenly distributed in the axial direction of the inner shell. Compressed air is introduced through the air inlet holes, a continuous and uniform air curtain wall is formed through the spiral air outlet holes in the inner holes, and the safety and reliability of equipment operation are greatly improved by means of the blocking effect of airflow.

This utility model relates to the technical field of dust suppression spray devices, specifically a dust suppression spray device for safety engineering. It includes an upper fixed frame, a spray PVC pipe, a movable platform, and an installation assembly. The spray PVC pipe is installed at a buckle on the upper fixed frame, and the movable platform is welded to a fixed point on the upper fixed frame. The movable platform and the upper fixed frame are also fixed at a fixed point on the installation assembly. In this utility model, after the dust suppression spray device is adjusted according to the dust pollution requirements of the safety engineering project, the user manually pushes the upper fixed frame and the movable platform to move their positions. When the dust pollution area is large, the dust suppression spray device can be moved to a fixed position using a support frame and movable wheels. The user can then manually tighten the through bolt to allow the buckle column and the ground buckle plate to spirally descend, with the ground buckle plate threaded onto the ground. Therefore, the dust suppression spray device does not need to be disassembled and moved as a whole, and can be moved to areas with severe dust pollution in safety engineering projects for dust suppression treatment.

The invention discloses a safety monitoring method for a lateral cantilever body of a filling body in a downward filling mining method based on dynamic response, and relates to the technical field of mine safety engineering and structural health monitoring. A steady-state vibration section is screened through standardization, covariance matrix characteristic decomposition and a minimum projection criterion, a main vibration orientation sequence is separated, and inherent frequency is extracted; based on the quantitative mapping model of the inherent frequency and the safety coefficient, the corresponding safety coefficient is obtained through calculation in combination with the current inherent frequency; and evaluating the stability of the cantilever body and assisting in supporting decision based on the safety coefficient. According to the invention, non-intrusive continuous online monitoring is realized, a quantitative basis is provided for support decision, resource waste and potential safety hazards are avoided, and intelligent safety management and control of a mine are facilitated.