73 results about "Explosives engineering" patented technology

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 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 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 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 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 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 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.

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.

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 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.

This invention discloses an experimental system and method for simulating the stress wave effect of a cylindrical charge blast hole, relating to the fields of rock dynamics and blasting engineering. The system includes a dynamic loading system, an incident system, a stress wave converter, and a sample model. The dynamic loading system generates a plane stress wave, which is transmitted through the incident system to the stress wave converter. The converter, through a semi-cylindrical pressure arc surface, conforms to the semi-cylindrical channel of the sample model, converting the plane stress wave into a cylindrical stress wave that acts on the sample. This invention generates a controllable plane stress wave through the dynamic loading system, which is shaped and directionally transmitted by the incident system, ensuring waveform stability, low energy loss, and consistent input conditions. The stress wave converter, with its flat-arc structure, converts the plane stress wave into a cylindrical stress wave conforming to the cylindrical blast hole, highly simulating the radial diffusion characteristics of real blasting stress waves. This allows for the simulation of stress wave loading during a cylindrical charge blast hole blast in a mine within the laboratory.

The invention provides a method for determining the detonation speed of an explosive used for tunnel caving blasting by considering the influence of ground stress, and belongs to the technical field of blasting engineering and rock mass mechanics. Comprising the steps of obtaining rock mass mechanical parameters, blasting parameters and crustal stress data; establishing a stress analysis model based on ground stress and a blasting design drawing; establishing a crustal stress redistribution model caused by a cut cavity in the model, calculating radial pressure stress generated by crustal stress redistribution among the caving holes, and drawing a polar coordinate graph; establishing a collapse inter-hole explosion stress superposition model, and calculating circumferential tensile stress generated by explosion at the central points of the two holes; and based on the dynamic tensile strength and stress state of the rock, establishing a strength criterion for forming the inter-hole through crack, and deducing and solving the minimum explosive detonation speed required by the criterion. The blasting joint forming quality is effectively improved, back break is controlled, surrounding rock damage is reduced, and the safety, economical efficiency and reliability of blasting engineering are improved.

The invention discloses a reasonable blasting lumpiness determination method based on numerical calculation, and relates to the technical field of strip mine blasting engineering.The method comprises the steps that after existing blasting design parameters and basic rock mechanical parameters are comprehensively obtained, a step model of a blasting area is constructed by applying Hypermesh three-dimensional modeling software; carrying out grid division and other necessary preprocessing operations on the built model; performing simulation calculation on the output K file through LS-DYNA finite element numerical simulation software, checking detailed simulation results by means of LS-Prepost software, setting monitoring points at key positions where large rocks are easy to generate in the blasting process, and judging whether the rocks are damaged or not according to a VonMises stress failure criterion. The method effectively solves the problems of low precision, high cost, low efficiency and the like in the existing blasting lumpiness determination method, remarkably improves the accuracy and efficiency of blasting lumpiness determination, and provides a solid scientific basis for blasting design work.

The invention belongs to the technical field of blasting engineering, and particularly relates to a blast hole filling material impact resistance characteristic experiment device and a using method thereof.The blast hole filling material impact resistance characteristic experiment device comprises an impact device and an air compression cylinder fixedly arranged in the impact device, and the impact device impacts a piston rod through a falling drop hammer to compress air in an air cylinder; a lower port of the air cylinder is communicated with an upper port of the filling pipe, and a rupture disk for converting pressure potential energy of compressed air in the air cylinder into kinetic energy is arranged in the air cylinder and the filling pipe; a filling material is arranged in the filling pipe, and a compaction observation component is further arranged on the filling material below the filling material and in the filling pipe; and a recovery device for recovering the filling material is arranged below the lower port of the filling pipe. The compaction observation component of the filling material is arranged in the filling pipe, and the lower ends of the upper vertical rod and the lower vertical rod forming the compaction observation component extend out of the filling pipe, so that the movement and deformation process of the filling material in the blast hole can be monitored in real time from the outside.

The invention relates to the technical field of blasting engineering control, and discloses an electronic control module based on a non-explosive rock breaking technology, which comprises an energy storage and execution unit, a core control unit, a transient stress wave sensing unit and a high-speed bus transceiving unit. The core control unit is electrically connected with all the units and used for receiving physical characteristic data generated after the transient stress wave sensing unit captures preorder blasting stress waves or receiving cooperative event codes transmitted by the high-speed bus receiving and transmitting unit from a blasting bus, and the final blasting moment is calculated in a self-adaptive mode based on the cooperative event codes. And then the energy storage and execution unit is controlled to release detonation energy. According to the invention, the problems of low delay precision, complex networking process and poor flexibility of the traditional technology are solved by sensing the physical feedback of the rock mass in real time and carrying out intelligent decision making and networked cooperation, and the accurate and adaptive control of the non-explosive rock breaking process is realized.

The invention relates to the crossing field of coal mine safety and blasting engineering, and particularly discloses a method for determining the blasting loosening range of a rock burst coal seam, which comprises the following steps: S1, based on rock burst coal seam parameters actually measured on site, substituting the parameters into a dynamic correction formula to calculate an initial blasting loosening radius; s2, a strain softening-dynamic instability coupling constitutive model matched with the rock burst coal seam is adopted, blasting parameters consistent with theoretical calculation are simulated through LS-DYNA software, and an irregular loosening range boundary and a simulated loosening radius and a fracture extension form under a non-uniform medium are output; s3, testing is carried out in stages after blasting, and data are obtained by combining multi-directional test hole arrangement; and S4, correcting theoretical calculation and numerical simulation results based on field test data to obtain a final blasting loosening range. According to the method, the defects of poor adaptability, simulation distortion, inaccurate test and no closed loop of the existing method are overcome, the accurate quantification of the loosening range is realized, and the method adapts to multiple working conditions and impact grades.

The invention relates to an intelligent blasthole explosive cartridge filling system and a conveying device thereof in the technical field of blasting engineering, and the intelligent blasthole explosive cartridge filling system comprises a supporting frame serving as a carrier, and a conveying mechanism, an explosive charging pipe and a pushing mechanism which are mounted on the supporting frame, and the explosive cartridge is separated from the carrier explosive charging pipe bearing the explosive cartridge through the reciprocating motion of the explosive charging pipe driven by the conveying mechanism and the reciprocating motion of the pushing component of the matched pushing mechanism. According to the explosive cartridge pushing device, the explosive cartridge pushing device is of a separated structural design, the carrier charging pipe and the explosive cartridge pushing mechanism are independently designed, and the flexible shaft with certain flexibility is ingeniously adopted as a pushing piece or a blocking piece, so that a plurality of explosive cartridges can be sequentially arranged in the blast hole at intervals while integrally entering the blast hole; the filling efficiency of the explosive cartridges is greatly improved, the filling precision of the explosive cartridges can be improved, and the blasting effect is effectively improved.

The invention discloses a material for constructing a non-Newtonian fluid, the non-Newtonian fluid, a preparation method and a blast hole blocking device, and belongs to the technical field of blasting engineering. The material for constructing the non-Newtonian fluid is prepared from the following components in parts by mass: 53 to 77 parts of sodium bentonite, 10 to 18 parts of modified hectorite, 1 to 4 parts of water-soluble carbonate, 1 to 2 parts of water-soluble hexametaphosphate, 0.3 to 4.5 parts of polyethylene glycol and 0.2 to 4.5 parts of silicon dioxide. After the material for constructing the non-Newtonian fluid is mixed with water, the non-Newtonian fluid with high static viscosity and limited recovery time period can be formed, the limited recovery time is less than or equal to 5.8 s, and the static viscosity is greater than or equal to 8000 mPa.s, so that the non-Newtonian fluid has excellent impact load absorption efficiency and can well meet the blast hole filling requirement.

The invention discloses an intelligent blasting construction method and system for dynamic blasting engineering, and relates to the field of blasting engineering. According to the method, a corresponding initial blasting scheme is generated according to an initial three-dimensional geological model; a preset blast hole subset is determined from the multiple preset blast holes, while-drilling process data corresponding to each target blast hole in the preset blast hole subset is obtained, and an actual measurement geological response data set is formed; performing spatial registration and difference calculation on the actually measured geological response data set and the model prediction geological response data set to generate a geological correction field model and a deviation data set corresponding to the geological correction field model; on the basis of the geological correction field model, lithology parameters of the positions corresponding to the non-drilled blast holes in the initial three-dimensional geological model are corrected, and a target three-dimensional geological model is obtained; and based on the target three-dimensional geological model, generating a corresponding target blasting scheme, and according to the target blasting scheme, completing the remaining operations. By implementing the technical scheme provided by the invention, the accuracy of the blasting effect is improved.

The invention discloses a rock blasting damage uniform control method of an axial interval charging structure, which comprises the following steps: S1, basic parameters of blasting engineering are determined, and the basic parameters comprise blast hole diameter, blast hole depth, mechanical parameters of target rock and explosive type; s2, an axial interval charging structure is designed, the axial interval charging structure comprises an upper-section explosive, a lower-section explosive and an inert interlayer, the inert interlayer is arranged between the upper-section explosive and the lower-section explosive, the length of the upper-section explosive is 2 / 3 of the length of the final assembly explosive, and the length of the lower-section explosive is 1 / 3 of the length of the final assembly explosive; the detonating point of the upper-section explosive is arranged at the middle lower part of the upper-section explosive, and the detonating point of the lower-section explosive is arranged at one end, close to the inert interlayer, of the lower-section explosive. The method effectively eliminates the root and large block problems of a traditional detonating mode, and damage distribution is uniform; the blasting effect stability is improved; and the method has important significance for promoting refined development of a rock blasting technology.

The present application relates to the technical field of multi-parameter monitoring of rock-soil blasting engineering, in particular to a device for testing the impact resistance of protective materials under dynamic load impact, a load setting structure is arranged on the upper part of the frame body, and the load setting structure comprises a magnetic lifting module and an impact module arranged in a top-bottom manner, the magnetic lifting module comprises an electromagnet and a magnetic chuck with a hole in the middle, the electromagnet is arranged above the fixed plate, the impact module comprises an impact ring, and the outer ring of the impact ring is sleeved on the positioning sleeve; the blast-resistant plate is located directly below the impact ring, and the bottom surface is connected to the lower bottom plate through a second elastic element; the center column is connected to the blast-resistant plate through a clamp at the bottom. The present application also provides a method for testing the impact resistance of protective materials under dynamic load impact, which can realize quantitative testing and evaluation of the impact resistance of protective materials, provide test equipment for the study of the impact resistance of protective materials, and enrich the testing method, and has a wide application prospect.

The application provides an explosive impact pressure testing device, and relates to the technical field of explosives and blasting engineering. The testing device simulates the hole wall where the explosive is located in the actual blasting through a testing pipe, and collects the test data of the detonation products generated after the explosion of the explosive, such as time, instantaneous impact pressure of the detonation products on the inner wall surface of the testing pipe and the like, by cooperating with an information collector. Meanwhile, the detonation products are reduced in energy carried when being discharged from the outlet end of the pressure relief pipe in the form of reverse folding and mutual collision by means of the main pressure relief channel and the auxiliary pressure relief channel, so that the testing device has good repeatability and low external impact power, reduces the high standard dependence of the testing device on the testing site, and avoids the problems of poor test repeatability, high cost, inconvenient operation and difficulty in obtaining stable and reliable data caused by the influence of factors such as geological conditions and charging parameters during the on-site blasting test.

The present application relates to the technical field of blasting engineering, specifically is the subway tunnel blasting harmful effect peak value prediction system based on multi-source data, including: the duration of response blasting effect, obtain harmful effect data at different subway tunnel structure; according to the continuous distribution degree and dispersion trend of harmful effect data, delimit the regional unit and regional identification corresponding to harmful effect data;Peak value characteristic analysis is carried out on harmful effect data, the change trend of peak value in each regional unit is calculated, and the peak value interval of each regional unit is delimited;The regional unit is converted into an early warning node, the peak value interval of each early warning node is associated and identified, and the association between the early warning nodes is determined;The association between the early warning nodes is mapped to each blasting point, and the peak value mapping relationship under each blasting is determined, so that the early warning activity degree of different regions is determined. The processing efficiency and scene pertinence of peak value prediction are improved.

This utility model discloses a segmented carbon dioxide gas expansion blasting device, relating to the field of blasting engineering technology. The utility model includes a first liquid storage pipe and a second liquid storage pipe. A controller is installed on one side of the inner cavity of both the first and second liquid storage pipes, and an excitation tube is installed on one side of the controller. A connecting assembly is provided between the first and second liquid storage pipes, and connectors are provided at both ends of both the first and second liquid storage pipes. In use, multiple sets of expansion blasting devices can be transported to the blasting point. By rotating the connecting plate, a locking block is inserted into the inner cavity of the connecting frame, and the locking block is fixed to the connecting frame using fixing bolts, thus completing the connection of the first and second liquid storage pipes. Subsequent connections are made in the same way. This connection method is simple to operate and allows for flexible connection of multiple devices into an expansion blasting device of a specified length according to actual blasting needs.