232 results about "Safety engineering" patented technology

The invention provides a pressure-bearing equipment damage mode identification and risk assessment method and system, and relates to the technical field of safety engineering, and the method comprises the steps: collecting multi-source sensor data and image data, inputting the data into a deep neural network after preprocessing and feature extraction, extracting spatial features through a convolutional layer, and extracting time sequence features through a recurrent neural network. And using the attention mechanism to fuse the features to identify an injury pattern. And then, constructing a multi-level evaluation index system, performing combined weighting by adopting an analytic hierarchy process and an entropy weight method, inputting weights into an improved Bayesian network model based on a D-S evidence theory, dynamically updating a conditional probability table by the model by utilizing a deep neural network and a fuzzy inference rule, and finally obtaining a risk evaluation result. According to the invention, the damage mode of the pressure-bearing equipment can be effectively identified, risk assessment is carried out, and assessment precision and reliability are improved.

The invention discloses a self-adaptive grouting control plugging method based on mining-induced fracture real-time monitoring, and relates to the technical field of mine safety engineering and hydrogeology. Through cooperative work of the grouting mechanism, the data monitoring system, the data collecting and processing module and the self-adaptive control module, automation and intellectualization of grouting protection can be achieved, and through introduction of the fracture roughness coefficient and the time-dependent viscosity, rough fracture flow resistance and grout rheology and time-varying characteristics are quantified, and the grout diffusion radius calculation error is reduced. The data weight is dynamically adjusted through a micro-seismic travel time residual error and sound wave velocity field joint inversion algorithm in combination with a weighted robust LM algorithm, and accurate fracture positioning is achieved. And a PID gain compensation and saturation function mechanism is adopted, so that self-adaptive safe and efficient grouting is realized. The fracture dynamic state is monitored in real time through the multi-source data fusion technology, grouting parameters are dynamically optimized in combination with an intelligent algorithm, complex geological interference is effectively restrained, slurry waste is reduced, and efficient and accurate plugging of mining-induced fractures is achieved.

The invention relates to the technical field of risk analysis, in particular to a safety engineering comprehensive management system which comprises a geological parameter dynamic monitoring module, a risk threshold early warning module, a stability weight evaluation module and a risk comprehensive management and control module. According to the method, lithology data are extracted through a drilling profile to calculate the layer thickness sudden change rate and the strength attenuation rate, a lithology abnormal area is positioned through a variable coefficient method, lithology sudden change marks are analyzed through spatial clustering, a dynamic trend is captured through sliding window mean value comparison, and gradient amplitude and slope direction dispersion are calculated through a digital elevation model. Fusing the abnormal point density to generate a terrain instability index; establishing a multi-dimensional quantitative evaluation framework; carrying out fuzzy comprehensive evaluation and cross validation on the instability index and an engineering parameter trend; generating a dynamic priority sequence, carrying out stake number interval matching to construct a risk measure table, carrying out analytic hierarchy process dynamic resource allocation support drainage scheme, and carrying out real-time monitoring and prediction closed-loop iteration. And adaptively adjusting the control strategy.

The invention discloses a method, a system, a medium and equipment for evaluating the running state of a main ventilator, relates to the technical field of safety engineering, and aims to select important parameters from monitoring parameters of a mining main ventilator to construct a running state evaluation index system and divide the running state of the main ventilator. The initial weight of the index is determined through a combined weighting method, the weight of the degradation index is improved by introducing a variable weight theory, and the identification capability of the model on the degradation state is enhanced. A cloud model is adopted to calculate the membership degree of the index parameters to the operation state grade, and the operation state of the main ventilator is determined according to the evaluation criterion of the worst grade item with the membership degree larger than 0.1. Verification is carried out by using data before the main ventilator breaks down, and the result shows that the model can evaluate the degradation state of the ventilator in time.

The invention relates to the technical field of safety engineering, in particular to an intelligent high-altitude and fire operation safety management system based on risk assessment, which comprises a safety helmet module, a data acquisition and transmission module, an edge calculation and processing module, a risk assessment and decision module, an emergency response module and a data analysis and optimization module. The intelligent safety helmet worn by each operator is integrated with a flame sensor and a height sensor, and flame information in an operation environment and height changes of the operators can be collected in real time. Through the low-power-consumption wireless communication technology, the collected data is transmitted to the edge computing device in real time, and the edge computing device calculates the comprehensive risk index through multi-sensor data fusion. And when the risk index exceeds a preset threshold value, the system automatically triggers alarm, sends early warning information to operators and a management platform, and takes emergency measures, so that the accident rate in high-altitude operation and fire operation can be effectively reduced, and the safety management level of the operation environment is improved.

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.

A detection method and device for predicting railway mud swells and mud leaks, comprising: step 1, obtaining a railway subgrade filling coefficient, a cyclic loading coefficient, and a radar detection coefficient; step 2, calculating a railway mud swell and mud leak risk value based on the subgrade filling coefficient, the cyclic loading coefficient, and the radar detection coefficient; and step 3, setting a risk value threshold, comparing the mud swell and mud leak risk value with the risk value threshold, and predicting the occurrence of mud swell and mud leaks when the mud swell and mud leak risk value is greater than or equal to the threshold. The present invention not only improves the accuracy of subgrade geological radar detection but also comprehensively considers subgrade filling and cyclic loading. Compared to existing technologies, the present invention comprehensively considers the three necessary conditions for mud swell and mud leaks, quantitatively and comprehensively predicting railway subgrade mud swell and mud leaks, meeting the requirements of resource conservation and quality and safety engineering construction.

The invention relates to the technical field of dust filtering, in particular to an indoor dust filtering device for safety engineering, which comprises a filtering barrel, an air inlet pipe is mounted at the upper end of the outer side wall of the filtering barrel, an air outlet pipe is mounted at the lower end of the outer side wall of the filtering barrel, a positioning cylinder is movably connected to the upper end of the filtering barrel, and a hollow column is fixedly connected to the lower end of the positioning cylinder. A hollow column is arranged in the positioning barrel, the hollow column extends into a cavity of the filtering barrel, a filtering structure is installed on the outer side wall of the hollow column, a soft connection structure is arranged in the positioning barrel, and the soft connection structure can judge whether the balance weight of the filtering structure is too heavy or not. Meanwhile, when the filter plate is cleaned, the bumping frequency of the filter plate is increased through the gravity of the filter plate, the interval of rotating speed switching of the filter plate is increased, the cleaning effect on the filter plate is improved, then through a scraping structure, the upper surface of the dust falling plate is scraped, and meanwhile dust is prevented from flowing backwards.

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 utility model relates to a sewage well anti-falling device for urban safety engineering, which comprises a well body and a well cover positioned at the top end of the well body, an anti-falling component is mounted on a step surface of the well body, the anti-falling component comprises a support ring and an anti-falling plate, and the support ring is movably connected with the anti-falling plate through a plurality of clamping components; the clamping component is movably installed on the supporting ring and comprises a fixing block, a bolt rod and a fixing rod, one end of the bolt rod and one end of the fixing rod are both fixedly connected with the bottom face of the fixing block, and the other end of the bolt rod and the other end of the fixing rod both extend downwards to be in sliding fit with the supporting ring. The fixing block is pulled upwards, the fixing block drives the fixing rod and the bolt rod to slide upwards along the second inserting hole and the first inserting hole correspondingly, the bottom end of the bolt rod is pulled out of the clamping hole to be located in the first inserting hole, the anti-falling plate is disassembled from the supporting ring, operation is convenient and fast, and the purposes of reducing construction danger, reducing damage to a well body and improving the safety of the well body are achieved. And the service life of the well body is prolonged.

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.

The invention discloses a roof / pillar displacement and stress monitoring-early warning integrated system and method. The system comprises a monitoring device, a data transmission system and a terminal controller, the terminal controller comprises a data processing system and an early warning system, the monitoring device comprises a plurality of monitoring boxes, and displacement sensors and stress sensors are arranged in the monitoring boxes; the data transmission system is used for transmitting the monitoring data to the data processing system; the data processing system converts the monitored and collected electric signals into readable data and processes the readable data to obtain real-time monitoring data, and the early warning system is used for identifying the monitoring data to obtain an early warning result. Monitoring, early warning and alarming are integrated, real-time analysis and response to monitoring results are completed, certain safety guarantee is provided for mine production, tunnel operation and the like, meanwhile, the construction strength is small, the disturbance effect of an original structure is reduced, the monitoring device can be repeatedly used, and the cost is reduced. And popularization and application in safety engineering monitoring of small and medium-sized mines and tunnels are facilitated.

The utility model discloses a ventilation device for safety engineering of industry and trade enterprises, which comprises a shell and a ventilation assembly arranged on one side of the shell, and the ventilation assembly is used for performing induction ventilation on the indoor space; the air purifier further comprises an adsorption assembly arranged in the shell, and the adsorption assembly is used for adsorbing and dehumidifying sucked air. The utility model belongs to the technical field of safety engineering, and particularly relates to a ventilation device for safety engineering of industry and trade enterprises.

The invention discloses a high-safety engineering construction collaborative supervision method and system based on a BIM model, relates to the technical field of collaborative management, is used for solving the problems of non-network problem delay and the like caused by redundant data accumulation in dynamic links, and comprises the steps of monitoring the stability of the dynamic links in real time and setting a dynamic monitoring threshold value; judging the stability of the dynamic link according to the dynamic monitoring threshold value, changing a cache strategy to recover the stability of the dynamic link when the stability is low, collecting transmission behavior data and storage behavior data when the stability is high, and calculating the data transmission priority of the transmission data and the cache data according to the transmission behavior data and the storage behavior data; according to the data transmission priority, a transmission rule is set to transmit data in different modes, feedback data is collected according to the data transmission condition, the feedback data is utilized to calculate a data redundancy proportion and a data calling rate, a deletion rule is set, and the redundant data is deleted according to the deletion rule. And the influence of non-network problem delay on engineering progress is reduced.

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 invention discloses a multi-stage ventilation filtering device for safety engineering, and relates to the technical field of ventilation equipment, the multi-stage ventilation filtering device comprises three double-layer filtering frames, each double-layer filtering frame is internally provided with two filtering net plates, the two filtering net plates are located on the same vertical plane, and the two filtering net plates are located on the same vertical plane. A sliding frame is arranged in each double-layer filter frame, two supporting frames are fixedly installed on one side of each sliding frame, a cleaning brush is fixedly installed in each supporting frame, and the outer wall of each cleaning brush makes contact with the outer wall of the corresponding filter screen plate; a cleaning transmission assembly is arranged in each double-layer filter frame, and four sleeving frames are fixedly mounted on the outer wall of each double-layer filter frame; multiple groups of double-layer filter frames can be quickly and conveniently assembled, so that multi-stage assembly and fixation can be conveniently carried out according to engineering requirements, the whole filter screen plate can be wiped and cleaned, and the blockage of the filter screen plate caused by accumulation of a large amount of dust is avoided.

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 discloses a buffering type steel structure stair guardrail, and belongs to the technical field of safety engineering. The guardrail comprises a handrail, a mounting block, a connecting block, a mounting column, a moving column, a buffering mechanism and an adjusting mechanism, wherein the fixed top of the mounting block is mounted on the handrail; the connecting block is rotationally mounted on the mounting block; the mounting column is arranged on a stair; the buffer mechanism comprises a shell arranged at the top of the moving column, a pressing column arranged at the bottom of the connecting block and inserted into the shell, a moving plate arranged at the bottom of the pressing column and slidably attached to the inner wall of the shell, and a limiting column arranged on the moving plate; through cooperative use of the devices, the handrail can stably move downwards through buffering when being subjected to external pressure, and can quickly return to the original position after the pressure is relieved.

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 utility model discloses an anti-fall warning device for an air-conditioning unit in a large space, comprising a support plate, characterized in that: one side of the support plate is fixedly connected to a support ring through a symmetrical connecting rod, one side of the support ring is rotatably connected to an inner gear ring, the inner gear ring meshes with a plurality of gears, and the central axis of each of the gears is bearing-connected to the support ring; the central axis of each of the gears is respectively fixedly connected to one end of a connecting rod, and the other end of each of the connecting rods is respectively fixedly connected to one end of a limiting rod, and the limiting rod is arranged in the central ring of the support ring. The utility model relates to the technical field of air-conditioning safety engineering, and specifically, to an anti-fall warning device for an air-conditioning unit in a large space, which can limit the position of the air-conditioning unit and provide an anti-fall warning.

The utility model relates to the technical field of safety engineering, and discloses a novel safety platform ladder which comprises first ladder side rods, second fixing pieces are fixedly connected to the upper sides of the outer walls of the two first ladder side rods, the right ends of the second fixing pieces are rotationally connected with the second ladder side rods, and sliding rods are fixedly connected to the middles of the left sides of the two second ladder side rods. The bottom of the right end of the protective handrail is fixedly connected with an anti-falling net, the bottom end of the anti-falling net is fixedly connected with the top of the rotating folding rod, the adjacent sides of the two first ladder side rods are fixedly connected with a plurality of pedals, the top ends of the first ladder side rods are provided with damping mechanisms, and the damping mechanisms are used for damping the safety platform ladder. According to the safety platform ladder, when the safety platform ladder is used, a worker can step on the wide platform plate through the pedals, and under the auxiliary action of the protective handrails and the anti-falling net, the safety of the worker can be protected to the maximum extent, and the use safety is improved.

The utility model relates to the technical field of air purification equipment, and discloses air purification equipment for automatic safety engineering, which comprises a pre-buried seat, two cover plates arranged at the top of the pre-buried seat, a vertical pipe vertically and fixedly connected to the inner bottom of the pre-buried seat, a connecting cover rotatably connected to the top of the vertical pipe, and a first connecting pipe vertically and fixedly connected to the interior of the connecting cover. A plurality of spraying pipes are horizontally and fixedly connected to the surface of the first connecting pipe, the multiple spraying pipes are connected to the outer surface of the connecting cover in a sleeving mode, the multiple spraying pipes are annularly and evenly distributed, a filtering mechanism is arranged in the pre-embedded base, and a spraying mechanism is arranged at the top of the vertical pipe. Through the arrangement of the device, air can be sprayed when the device is used, so that dust in the air is absorbed, the air purification effect is improved, meanwhile, falling water vapor can be partially recycled and can be reused after being filtered, and the water saving effect is improved.

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.

The application discloses a kind of environmental protection dust removal devices for safety engineering, specifically relates to the field of environmental protection technology of safety engineering, including shell, the lower end of the shell is fixedly connected with support frame, the front end of the shell is fixedly installed with control box, the lower part of the front end of the shell is fixedly connected with air inlet pipe, the inner surface of the shell is provided with filter assembly, the inner surface of the shell is provided with wet component above filter assembly.The environmental protection dust removal device for safety engineering disclosed in the application can realize the filtering mode of combination of dry and wet by being provided with filter assembly and wet component, so that air can rise in spiral form and mix with water mist at two protrusions, the spiral air flow can increase the contact area and time of air and water mist, thereby improving the adsorption and purification effect of water mist on fine particles in air, more particles can be captured and removed, and the filtering efficiency and stability of the whole device can be improved.