114 results about "Explosives engineering" patented technology

The invention provides a blasting engineering site safety risk real-time assessment and intelligent scheduling method. According to the method, a piezoelectric sensor array is arranged on a blasting engineering site to collect sound wave signals, and dynamic change information of fractures in a rock mass is captured; calculating sound wave propagation time difference data between adjacent nodes, and determining a new fracture space position and an existing fracture expansion trend according to time difference fluctuation characteristics; the fracture position, the expansion trend and the label of the current blasting operation stage are input into a fuzzy logic decision-making system, and a fracture risk distribution diagram reflecting the real-time stability of the rock mass is generated through collaborative analysis; determining a field safety risk level based on the graph, and quantifying the subsequent instability possibility of the rock mass; and a scheduling instruction is generated according to the risk level, the drilling position, the charging sequence and the detonation time sequence are dynamically adjusted, the operation process is optimized, and the instability risk is avoided. According to the method, the dynamic sensing precision and response speed of the blasting engineering field rock mass instability risk are improved.

The invention discloses a strip mine blasting numerical simulation analysis method based on an RHT constitutive model, and the method comprises the following steps: S1, building a strip mine blasting model: building a three-dimensional model through ANSYS software according to the actual geological conditions and blasting design requirements of a strip mine, and determining the geometric dimension of the model, the arrangement of blast holes, and the parameters of a charging structure; s2, determining material parameters: performing sampling and physical and mechanical property testing on field rocks of the strip mine to obtain rock parameters, determining rock material parameters in combination with an RHT constitutive model, determining explosive material parameters according to types of explosives used on site, and determining parameters of other related materials such as air and filling materials. According to the method, the RHT constitutive model is adopted, so that the accuracy of numerical simulation is improved; a more reliable basis is provided for blasting engineering design; the method has obvious economic benefits and social benefits; and powerful technical support is provided for the development of the strip mine blasting technology.

The invention discloses a deep hole blasting method for a strip mine step, relates to the technical field of blasting engineering, and aims to solve the problems that an existing strip mine step blasting method is easy to cause excessive large blocks on a slope surface and on the front section of the step, so that the excavation difficulty and the transportation potential safety hazard are increased. The method comprises the steps that an inclined first main blast hole and a vertical second main blast hole are drilled in the end, close to the slope surface, of a step to be blasted; a first auxiliary hole crossed with the first main blast hole is drilled in the slope surface, and a second auxiliary hole is formed beside the first main blast hole of the step; charging each blast hole with explosives; all the blast holes are connected into a detonating network through detonating lines; detonating through an exploder; wherein the first main blast hole and the second main blast hole can be distributed in a quincunx shape, the second main blast hole is vertical, and each main blast hole comprises a filling section and a charging section. According to the method, the auxiliary holes are formed to solve the problem of insufficient explosion stress of the slope and the step front section, and the explosion effect is improved.

The invention discloses a rock blasting load transfer and throwing simulation method which comprises the following steps: S1, acquiring field parameters of a target blasting project, the field parameters comprising rock mass mechanical parameters, explosive parameters, blast hole parameters and charging structure parameters; and S2, based on the field parameters, constructing a three-dimensional explosive-rock calculation model by adopting pretreatment software, dividing grids, importing the grids into finite element software, setting a material model, a state equation and boundary conditions, and simulating an explosive detonation process. The limitation of a single numerical value method is solved; quantitative analysis and accurate prediction of rock blasting lumpiness are achieved, inclined joints are adopted in the discretization process, actual rock mass joint distribution is better fitted, and the reliability of a simulation result is improved; bulk rocks and excessive crushing phenomena are effectively reduced, the explosion energy utilization rate is improved, the engineering cost is reduced, and a scientific basis is provided for explosion design of projects such as mining and water conservancy and hydropower.

The invention relates to the technical field of rock-soil blasting engineering multi-parameter monitoring, in particular to a protective material anti-impact characteristic testing device under dynamic load impact, a load setting structure is arranged at the upper part of a frame body and comprises a magnetic lifting module and an impact module which are arranged up and down, and the magnetic lifting module comprises an electromagnet and a magnetic chuck with a hole in the middle; the electromagnet is arranged above the fixing plate; the impact module comprises an impact circular ring outer ring which is sleeved on a positioning sleeve; the anti-explosion plate is located under the impact ring, and the bottom face of the anti-explosion plate is connected with the lower bottom plate through a second elastic piece. A sample is connected between the bottom of the central column and the anti-explosion plate through a clamp. The invention also provides a method for testing the anti-impact characteristic of the protective material under the dynamic load impact, the quantitative test and evaluation of the anti-impact characteristic of the protective material can be realized, test equipment is provided for the research on the anti-impact characteristic of the protective material, the test method is enriched, and the application prospect is wide.

The invention provides a medium-length hole blasting method for cooperative control of air blasting and hole collapse, and relates to the technical field of underground mine blasting engineering.The medium-length hole blasting method comprises the following steps that S1, geological and structural information of an underground mine stope to be mined is obtained; s2, dividing a medium-length blast hole function section; s3, designing a charging system: constructing a structure coupling blasting configuration system based on the synergistic effect of a blasting section, an air blasting section and a hole collapse section; s4, setting an initiation system and delay; and S5, blasting implementation. According to the method, function division in the drilling space is redefined, a collapse-air coupling system is established, directional management and control over the detonation pressure release path and structure-level protection over the protection target are achieved, the structure bottleneck of blasting disturbance control in the prior art is broken through, and the reliability of blasting disturbance control is improved. And the safety, the stability and the adaptability of medium-length hole blasting under complex geological conditions are improved.

The present invention discloses a method for identifying misfired electronic detonators based on comparison of multiple characteristic information of blasting vibration. The method performs EMMD signal decomposition based on the original blast source information, establishes an AR model to extract multiple characteristic information, and uploads the model and multiple characteristic information to the data center to form a basic database of blasting vibration. At the same time, the original blast source information of multiple blasting sites is collected and its characteristics are extracted to establish a large database of blasting vibration signals under different delay intervals, typical hole network parameters, and charge structures. Then, the actual blasting vibration signal is collected and the actual multiple characteristics are extracted, and they are compared with the multiple characteristics in the large database of blasting vibration signals. When there are characteristic differences, it is determined that there are misfired detonators in this blasting project. The present invention improves the blasting construction efficiency, reduces the great danger in the process of misfired detonator treatment, and improves the safety of using digital electronic detonators at the same time.

The invention discloses a method for rapidly and accurately judging a blasting vibration safety allowable distance, and belongs to the technical field of geotechnical engineering blasting. The method specifically comprises the steps of establishing a simplified mathematical model of explosive wave propagation and an explosive wave propagation control equation; basic mechanical parameters of rocks of the blasting engineering are obtained; obtaining a blast hole wall stress wave action time history curve; solving the explosion wave propagation control equation to obtain a radial stress complex variable function and a mass point displacement complex variable function at any moment around an explosion source; obtaining a radial stress time domain variable function and a mass point vibration velocity function; constructing a characteristic function relationship between a radial stress peak value and a mass point vibration velocity peak value, introducing a peak value stress wave propagation attenuation function, finally obtaining a mass point peak value vibration velocity, and drawing a mass point peak value vibration velocity distribution curve; and the blasting vibration safety allowable distance is obtained. According to the method, the blasting vibration safety allowable distance conforming to the specification can be rapidly and accurately calculated, the calculation efficiency is high, and the prediction result is accurate.

The invention discloses a tunnel mining engineering blasting effect evaluation and analysis method based on the Internet, and relates to the technical field of tunnel mining engineering, and the method comprises the steps: carrying out the synchronous fusion of a multi-modal feature set, and generating a multi-dimensional blasting feature representation; performing multi-scale time sequence decomposition and spectrum energy clustering on the multi-dimensional blasting characteristic representation to generate a blasting response mode, and performing statistics and spectrum analysis to generate a blasting effect evaluation index set; comparing the blasting effect evaluation index set with a standard template in a historical blasting engineering database to generate a deviation reference, and calculating a current blasting effect deviation degree by adopting a Bayesian dynamic inference method to generate a deviation vector; performing dynamic weight adjustment and feature contribution correction on the deviation vector to generate a comprehensive blasting effect scoring result; and analyzing and summarizing the comprehensive blasting effect scoring results to generate a blasting effect evaluation report. The reliability of blasting quality control and safety early warning is improved.

The invention provides an explosion control device and method for directional shaped charge blasting with low environmental influence, and relates to the technical field of blasting engineering and environmental protection, the device comprises a rock mass characteristic analysis module, a directional shaped charge structure design module and a blasting effect prediction module; the method comprises the steps of conducting geological investigation and rock mass characteristic analysis on a to-be-blasted area, conducting directional shaped charge structure design on the basis of the rock mass characteristic analysis result, conducting blasting effect prediction on the basis of the rock mass characteristic analysis result and the directional shaped charge structure, and if the prediction effect conforms to expectation, constructing a low-environmental-influence control decision, the environmental influence is reduced. By means of rock mass characteristic analysis, directional shaped charge structure design and blasting effect prediction, balance of efficient rock mass breaking and low environmental influence is achieved, the environmental influence can be remarkably reduced, the energy utilization rate is increased, and the method adapts to complex geological conditions and has important engineering application value and social significance.

The invention relates to the technical field of blasting engineering, and particularly discloses a segmented charging structure device for high-hardness rock mass blasting, which comprises a segmented charging unit body, a top cover, a camera, an elastic centering assembly, a reinforcing assembly, a detonating system and a sealing protective layer, the body is provided with two independent charging cavities, and intelligent monitoring modules are arranged in the charging cavities; the elastic centering assembly realizes self-adaptive centering through four groups of supporting legs with reinforcing ribs and an arc-shaped rubber pad, and is matched with a folding supporting structure of the reinforcing assembly to guarantee the stability of a deep hole; the camera and the pressure sensor monitor the hole wall state and the centering effect in real time; and the top cover and the protective layer form double sealing. According to the device, the positioning precision is improved, the uniformity of blasting lumpiness is improved, the root rate is reduced, and the device is suitable for high-hardness rock mass blasting scenes such as mines and tunnels.

The invention relates to an underwater rock plug blasting charging device and a using method thereof. The method is suitable for the technical field of underwater rock plug blasting engineering. The technical problem to be solved by the invention is to provide the underwater rock plug blasting charging device and the using method thereof. According to the technical scheme, the underwater rock plug blasting charging device comprises a waterproof pipe body, explosives, leg wires, fixing pieces, plugs and electronic detonators, a cavity is formed in the waterproof pipe body, an opening communicated with the cavity is formed in the single end of the waterproof pipe body, the explosives and the electronic detonators are installed in the cavity through the fixing pieces, and the explosives and the electronic detonators are arranged in the waterproof pipe body. A cavity is formed in the waterproof pipe body, a plug capable of plugging the cavity is arranged at the opening of the waterproof pipe body, one end of the leg wire is connected with the electronic detonator, and the other end of the leg wire penetrates through the plug and is at least partially positioned outside the waterproof pipe body; and when the waterproof pipe body is sealed by the plug, the interior of the cavity can be inflated to be adjusted to preset air pressure.

The application discloses a test system and a test method for simulating the stress wave action of a columnar charge blast hole, and relates to the technical field of rock dynamics and blasting engineering. The test system comprises a dynamic loading system, an incidence system, a stress wave conversion body and a sample model. The dynamic loading system generates a plane stress wave. The plane stress wave is conducted to the stress wave conversion body through the incidence system. The stress wave conversion body is attached to the sample model half-cylindrical channel through a semi-cylindrical pressure-arc surface, and the plane stress wave is converted into a cylindrical stress wave acting on the sample. The application generates controllable plane stress waves through the dynamic loading system, and the plane stress waves are shaped and directed through the incidence system, so that the waveform is stable, the energy loss is low, and the input conditions are consistent. The stress wave conversion body converts the plane stress wave into a cylindrical stress wave attached to the columnar blast hole through a plane-arc structure, highly simulates the radial diffusion characteristics of the real blasting stress wave, and realizes the simulation of the columnar charge blast hole blasting stress wave loading in the laboratory.

The present application relates to the technical field of computer-aided design, in particular to a kind of well lane blasting area's polyline hole arrangement optimization method and system.The present application first filters out the historical reference project of current blasting project, to determine the basic hole arrangement parameter of current blasting project based on the hole arrangement design parameter of each historical reference project;Further analyze the engineering basic information deviation of current blasting project and historical reference project, and the drilling positioning error deviation of the drilling equipment of current blasting project and historical reference project, to obtain hole arrangement correction coefficient;Finally, the basic hole arrangement parameter is adaptively corrected using hole arrangement correction coefficient, to determine the polyline hole arrangement parameter of current blasting project.The present application quantifies rock mass characteristics and equipment deviation by historical similar blasting project matching and blasting condition deviation comparison to adaptively adjust hole arrangement parameter, optimizes the polyline hole arrangement of well lane blasting area, and improves the economy and safety of blasting design.

The utility model relates to the technical field of mine blasting engineering, and discloses a deep hole blasting chassis resistance line measuring device which comprises a supporting cylinder, the upper surface of the supporting cylinder is rotationally connected with a first threaded ring, a first threaded rod is arranged in the supporting cylinder, and the first threaded rod is in threaded connection with the first threaded ring; a fixing part is hinged to the upper surface of the first threaded rod, a threaded cylinder is in threaded connection with the right side face of the fixing part, an extending cylinder is arranged in the threaded cylinder, and a second threaded ring is rotationally connected to the right end of the threaded cylinder. According to the deep hole blasting chassis resistance line measuring device, when the angle of a blast hole is checked and accepted, the length of the long supporting barrel is adjusted, the long supporting barrel is placed in the blast hole, the included angle between the threaded barrel and the supporting barrel is adjusted, the threaded barrel is kept horizontal according to the bubble level, and the included angle between the threaded barrel and the supporting rod is the actual angle for checking and accepting the blast hole; whether the resistance line of the chassis meets the design requirement or not can be calculated through the angle and the measurement angle, so that the measurement efficiency is improved.

The invention relates to the technical field of mining and blasting engineering, and discloses an open limestone mine slope presplitting blasting device which comprises two frame plates, a groove is formed in the center of the top of each frame plate, a bubble level is fixedly connected to the inner side of each groove, and two fixing mechanisms are arranged at the position, close to the end, of the bottom of each groove. Track plates are fixedly connected to the positions, close to the two ends, of the tops of the two frame plates, track groove holes are formed in the track plates, L-shaped blocks are slidably connected to the inner sides of the track groove holes, and limiting strip-shaped holes are formed in the two sides of the interiors of the track groove holes. Through ground nail fixing and multiple sets of adjusting structures, the frame plate can be accurately adjusted to be in the horizontal state, a ground nail stable supporting device and a bubble level monitor in real time are matched with a lifting mechanism for thread adjustment and toothed plate limiting, the height can be finely adjusted, it is guaranteed that drilling of a drill bit does not deviate, the punching precision is guaranteed, and a good foundation is provided for follow-up explosive filling; and the overall operation stability is improved.

The invention relates to the technical field of blasting engineering intellectualization, in particular to a blasting design classification method and evaluation system based on a k-means method, and the method comprises the steps: collecting blasting design data, recording coordinate data (x, y) of each blast hole, preprocessing the data, processing abnormal data points, determining a final boundary, and forming a closed boundary region. Ensuring that all blast hole points are located in the boundary region, performing triangulation, outputting triangular plates, calculating the average area, the area variance, the area sum and the single-hole average load area of all the triangular plates, inputting the features into a K-means clustering function, determining a K value, and performing classification; the method aims at solving the problems that a traditional blasting design classification method depends on artificial experience judgment and lacks objective quantitative standards, so that classification results are high in subjectivity and poor in consistency, intelligent classification of blasting design is achieved, and a scientific basis is provided for blasting scheme optimization.

The invention discloses a bench blasting delay parameter determination method based on new free surface evolution, which comprises the following steps: S1, establishing a 3D-DIC in-situ experiment system, and collecting three-dimensional displacement field dynamic data of an ore rock mass in single-hole bench blasting and double-hole bench blasting processes; and S2, identifying an initial forming moment, a spatial position and a full-period evolution process of a new free surface by taking the ore rock mass out-of-plane displacement not less than 10cm as a new free surface forming criterion. According to the method, delay parameters are determined on the basis of new free surface evolution data actually measured on site, subjectivity of empirical design is avoided, and inter-hole and inter-row delay is accurately matched with a new free surface expansion rule; the method realizes collaborative optimization of vibration control and crushing effect, is suitable for large-scale bench blasting of large surface mines, can be directly applied to an electronic detonator hole-by-hole detonating system, and improves the safety and economy of blasting engineering.

The invention discloses a method for calculating effective energy of explosives in blasting demolition, and relates to the technical field of blasting engineering. The method is used in a blasting demolition project of a reinforced concrete (RC) structure, and comprises the following specific steps: firstly, according to known parameters, based on a Rittinger theory, determining the crushing energy of concrete by calculating the newly increased surface area of a concrete fragment after blasting; secondly, the longitudinal bars are regarded as simply supported beams, and the bending deformation energy of the longitudinal bars is calculated based on the elastic theory and the plastic ultimate bending moment; and finally, defining the sum of the crushing energy of the concrete and the bending deformation energy of the longitudinal bars as effective energy of demolition damage, and calculating the effective energy and the proportion of the effective energy in the total energy of explosive explosion. According to the method, effective energy distribution of the explosive can be accurately quantified, the amount of the explosive can be regulated and controlled, the defect that the amount of the explosive is determined by depending on an experience method and a repeated trial explosion method in the prior art is overcome, and a scientific calculation method is provided for determining the amount of the explosive.

The invention discloses a blasting engineering monitoring system and method based on expansion type blasting vibration measurement piles, and relates to the technical field of mine blasting monitoring, and the blasting engineering monitoring system comprises a plurality of expansion type blasting vibration measurement piles and a visual tracking module; the unfolding type blasting vibration measuring pile comprises a center rod and an unfolding part arranged outside the center rod in a sleeving mode. A synchronous clock module and a cache unit are arranged in the center rod, and a triaxial accelerometer and a mark point are arranged at the two ends of the center rod respectively; the unfolding part comprises a plurality of unfolding type supporting sheets, and pressure sensors are arranged at the root parts of the unfolding type supporting sheets in a coupling manner; a strain gauge is arranged in a gap position between every two adjacent expansion type supporting sheets, and the strain gauges are electrically connected with the cache unit; and the strain gauge clings to the wall of the drill hole. The device is compact in structure and accurate in measurement, and can efficiently and reliably provide real-time data support and safety early warning decision basis for blasting engineering.

The blasting method comprises the steps that according to engineering geological conditions and blasting effect requirements, blasting engineering design is carried out, drilling parameters, a detonating time sequence and plugging requirements are determined, according to the drilling parameters, a charging structure matched with the specification is selected, and a blasting process is carried out according to the selected charging structure. And the explosive charging structures filled with the explosives are assembled outside the drill hole according to the designed interval, the drill hole is pushed, and a hole opening is blocked. And the space between the charging structure and the hole wall of the drill hole is filled with rapid hardening slurry, and gas in the drill hole is exhausted through the exhaust pipe. And after the slurry in the hole is solidified, final connection of the detonating network is completed in a safe area outside the hole, and after comprehensive inspection and warning setting, a detonating station commands to excite the network to achieve detonating. According to the segmented plugging blasting method for the ascending drill hole, the hole sealing length is shortened, the axial distribution of blasting energy is optimized, the energy effect of a hole opening area is effectively enhanced, and the boulder rate is reduced.

The present application provides a kind of open-air blasting hole net parameter determination method, device, electronic equipment and detection system, belongs to blasting engineering technical field.The method comprises: S1, obtains the rock mass explosibility parameter of target blast area, initial hole net parameter;S2, the parameters obtained and blasting energy parameters are input into numerical simulation model, and output prediction result;S3, obtains the measured result according to the current hole net parameter execution blasting;S4, according to the measured result and prediction result, corrects the parameters of numerical simulation model;S5, optimizes hole net parameter;S6, based on the iteration control of multi-objective optimization repeatedly executes S2-S5, and the first preset number of iterations control executes S2-S5, subsequent iteration control only executes S2 and S5;Until the prediction boulder rate exceeds the first threshold value, stop iteration, and the optimal hole net parameter with the prediction boulder rate less than the first threshold value is determined as target hole net parameter.The method is used to solve the problem of high explosive specific consumption in related art.

This invention proposes a method for testing a grouting curtain model system for underground pipeline vibration control, relating to the fields of underground engineering and blasting engineering technology. The method includes: constructing a test model based on similarity theory, including determining a geometric similarity ratio, constructing a model test box with a shock-absorbing boundary, and reserving grouting locations within the test box; selecting model test materials, including selecting fill materials appropriate to the project site, determining buried pipeline specifications, preparing explosive packs for simulated blasting, and preparing grouting curtain materials according to a predetermined ratio; arranging a measurement system and conducting tests, including arranging strain measurement points on the pipeline surface, deploying acceleration sensors and earth pressure sensors in the soil, and using a dynamic signal acquisition system to record measurement data during the simulated blasting process. This invention systematically reveals the vibration reduction mechanism of grouting curtains in controlling blasting vibration in urban underground pipelines, providing a theoretical basis and technical support for urban infrastructure safety.

The present application relates to the technical field of shaft blasting, and particularly relates to a kind of intelligent design methods of shaft blasting excavation, comprising: constructing back-end database, the back-end database includes typical shaft blasting case knowledge base and shaft blasting engineering theoretical rule knowledge base;Shaft blasting design parameters are input into blasthole design model, to generate blasting design data, the blasthole design model is established based on the back-end database;Equal proportion layering method is used to calculate blasthole distribution radius, and blasthole plane coordinates are calculated based on polar coordinate positioning method;Based on the blasthole plane coordinates, different types of blastholes are visualized and rendered according to the preset graphic semantic system, and section boundary auxiliary line, coordinate axis, legend and title bar are automatically generated on the rendered graphics, to obtain the final blasthole layout diagram.The present application realizes the change of blasting design data from artificial experience decision to data and algorithm driven decision.

1. The name of the design product: universal gas spacer. 2. The use of the design product: the need for spacing charges between blasting holes in blasting engineering. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention belongs to the technical field of mining, and provides a blasting treatment method suitable for a large complex water-filled goaf, which comprises the following steps: constructing a three-dimensional digital model of the water-filled goaf; according to the three-dimensional digital model of the water-filled goaf, drill holes are formed in a goaf roof, and a goaf model is detected and rechecked; drilling through holes in a goaf top plate for lifting hole backfilling; a gas spacer, a high-precision digital electronic detonator, a primer and an emulsion explosive are placed in the hole; and finally, blasting engineering software is used for blasting design and simulation, an optimal scheme is selected, hole-by-hole millisecond blasting is adopted, and blasting treatment is completed. According to the method, accurate detection of the large complex water-filled goaf is achieved, the problem that the water-filled goaf is difficult to construct is solved through simple blasting construction, it is ensured that the goaf roof blasting effect is good, goaf caving is complete, goaf potential safety hazards are eliminated, and good economic benefits are created.

This invention discloses a deep-hole blasting method for open-pit mine benches, relating to the field of blasting engineering technology. Existing open-pit mine bench blasting methods tend to result in excessive large blocks on the slope and in the front section of the bench, increasing excavation difficulty and transportation safety hazards. This method includes: drilling an inclined first main blast hole and a vertical second main blast hole at the end of the bench near the slope; drilling a first auxiliary hole on the slope that intersects with the first main blast hole; and setting a second auxiliary hole beside the first main blast hole on the bench; loading explosives into each blast hole; connecting all blast holes with detonating wires to form a detonation network; and detonating with a detonator. The first and second main blast holes can be arranged in a quincunx pattern, with the second main blast hole being vertical. Each main blast hole includes a filling section and a loading section. This method compensates for insufficient explosive stress on the slope and in the front section of the bench by setting auxiliary holes, thereby improving the blasting effect.

The utility model discloses a blasthole angle measuring device for open-air deep hole blasting, and relates to the technical field of blasting engineering. The device comprises a telescopic sleeve and an extension rod slidably connected to the bottom end in the telescopic sleeve, a sliding ring is slidably connected to the outer side of the outer wall of the telescopic sleeve, the top of the outer wall of the telescopic sleeve is movably connected with a rotating ring through a bearing, telescopic rods are evenly installed on the outer wall of the sliding ring in the circumferential direction at intervals, and an adjusting assembly is arranged in the center of the top of the telescopic sleeve. A limiting assembly is arranged on one side of the front end of the top of the telescopic sleeve. Through the adjusting assembly and the limiting assembly, a worker can conveniently and correspondingly adjust the length of the extension rod according to needs, the working efficiency is high, the positions of the placement plate and the ground nail can be adjusted according to the diameter of a blast hole through the telescopic rod and the rotating ring, the application range is wide, meanwhile, the measurement accuracy can be improved, and the practicability is high. And operation is convenient, and time and labor are saved.

The invention relates to the technical field of blasting engineering, and discloses a side slope presplitting blasting device based on mixed loading explosives and an installation method. The side slope presplitting blasting device based on the mixed explosive is formed by fixing modules such as the reinforced explosive charging pipe, the air spacing pipe and the hard explosive charging pipe through detachable connecting structures, the detonating cord penetrates through all the explosive charging modules in the length direction and extends to the outside, rapid assembly and disassembly are supported, and the side slope presplitting blasting efficiency is improved. The pre-assembled device can be integrally or sectionally placed into the pre-splitting hole quickly, a complex charging structure can be integrally mounted in one device, time consumption of section-by-section filling, adjusting and fixing in traditional manual charging is reduced, and construction efficiency is remarkably improved.

This invention discloses a method and system for designing tunnel smooth blasting charge schemes, relating to the field of tunnel blasting engineering technology. The method includes: collecting and preprocessing basic parameter data required for tunnel smooth blasting design; calculating initial design parameter values ​​for the smooth blasting charge based on smooth blasting design theory and a pre-set parameter calculation model, generating an initial design scheme; inputting the initial design parameter values, cross-sectional geometric parameter data, surrounding rock condition parameter data, explosive parameter data, and historical blasting effect feedback index values ​​into a pre-trained neural network optimization model, outputting optimized smooth blasting charge design parameter values; automatically updating the peripheral hole layout and charge structure in the design scheme based on the optimized design parameter values, generating and outputting the final tunnel smooth blasting charge design scheme. This invention enables intelligent and adaptive design of tunnel smooth blasting charge parameters, improving engineering applicability and molding quality.