17 results about "Explosives engineering" patented technology

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blasting area's polyline hole arrangement optimization method and system.The present application first filters out the historical reference project of current blasting project, to determine the basic hole arrangement parameter of current blasting project based on the hole arrangement design parameter of each historical reference project;Further analyze the engineering basic information deviation of current blasting project and historical reference project, and the drilling positioning error deviation of the drilling equipment of current blasting project and historical reference project, to obtain hole arrangement correction coefficient;Finally, the basic hole arrangement parameter is adaptively corrected using hole arrangement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 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.

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.

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 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.

The application discloses a kind of blast hole rapid plugging bag for roadway excavation and application, belong to mining technical field.The plugging bag is composed of two-component polyurethane system, and is packaged using multi-layer composite aluminum foil bag:A component is isocyanate and modifier, B component contains polyol, blowing agent and composite system containing trimerization catalyst;When used on site, it is rapidly activated and mixed, packed to blast hole plugging section, rapidly foamed and solidified in hole, forming high-strength, high-closed-cell-rate and tightly bonded polyurethane foam plugging body with hole wall, which can effectively seal explosive gas, significantly improve blasting stress wave energy and explosion gas action time, thereby improving rock breaking effect, reducing explosive unit consumption, effectively controlling harmful effects such as flyrock and shock wave;The present application solves the core problems of traditional blast hole plugging construction, poor sealing and low strength by using stable packaging and specific reaction system, providing an efficient, safe and convenient plugging solution for blasting engineering.

This invention relates to the field of tunnel blasting engineering management and data processing technology, specifically to a data-driven method and system for optimizing tunnel blasting parameters. The method includes: acquiring the functional region to which the blast hole belongs, hole layout parameters, benchmark explosive consumption, and benchmark rock mass resistance parameters; collecting drilling operation data from the rock drilling equipment to determine the dynamic rock mass strength index of the blast hole, thereby identifying strength anomaly regions in the tunnel face and generating weakened topological boundaries enveloping these regions; combining the spatial position characteristics of the blast hole relative to the weakened topological boundary and the dynamic rock mass strength index to determine the local strength mutation coefficient of each blast hole; using this coefficient to correct the benchmark explosive consumption, and combining it with spatial volume parameters to calculate the dynamic charge amount of the blast hole. This method can respond to local heterogeneous mutations in the rock mass at the tunnel face, improving the accuracy of matching the charge energy with the actual rock-breaking resistance.

The application discloses a charge dropping device for vertical blast hole and a charging method, which comprises a bottom disc fixed at the bottom of a charge, wherein a circle of buffer blades which are inclined upward and outward is arranged on the outer peripheral edge of the bottom disc, and the buffer blades have elastic deformation allowance relative to the bottom disc; the bottom disc and the buffer blades are put into the blast hole together with the charge, and the buffer blades are extruded with the blast hole wall after the charge enters the blast hole, so that the falling speed of the charge in the blast hole is reduced; and the bottom of the bottom disc is further provided with a bottom buffer part which reduces the collision energy of the charge with the bottom of the blast hole when the charge falls to the bottom of the blast hole. The application increases the resistance of the charge in the blast hole through the buffer blades, slows down the falling speed of the charge, reduces the impact pressure of the charge when it touches the bottom, effectively eliminates the safety hidden danger existing in the free sliding of the charge in the vertical blast hole, improves the charging efficiency, avoids the safety problem of the charge in the blasting engineering, and has the advantages of simple structure and low cost.

The present application relates to a kind of experimental device of simulating ore rock bulk blasting, accumulation and migration, belong to mining engineering and mine blasting engineering technical field.It includes experimental warehouse device, vertical throwing device and multi-angle throwing device.The experimental warehouse device is used to construct the geometric space and boundary constraint condition in line with the characteristics of actual underground stope;Vertical throwing device is used to simulate the vertical throwing of ore rock bulk under the action of explosion and gravity after blasting;Multi-angle throwing device can simulate the throwing behavior of ore rock bulk under different blasting energy and throwing direction by adjusting the throwing angle and throwing energy.Through the combination of the above device and the regulation of key parameters, the present application can simulate the motion trajectory, diffusion range, final accumulation form and space-time migration of ore rock bulk under the action of explosion power and multi-throwing direction, so as to provide a repeatable, observable and controllable indoor experimental platform for the similar model experimental study of ore rock bulk accumulation and migration law in underground deep mining.

This invention discloses a safe blasting construction method and system based on pre-blast shock wave detection, belonging to the field of blasting safety control in waterway engineering. It solves the technical problems of traditional blasting lacking accurate pre-detection and difficulty in controlling vibration velocity around dilapidated buildings. The method includes: clearly defining the blasting area and vibration velocity warning value during construction preparation; zoning and deploying numbered pre-blasting holes in strongly / moderately weathered rock areas and implementing gradient charge initiation; collecting shock wave data through an integrated acoustic-vibration-stress system to deduce parameters such as site coefficient and attenuation coefficient; constructing a vibration velocity calculation equation with vibration reduction correction terms to optimize the charge amount, blasting point offset, and vibration reduction hole parameters; and feeding back the measured vibration velocity to the model for iterative optimization after vibration reduction structure construction, formal blasting, and real-time monitoring. This invention achieves high vibration velocity control accuracy, with the deviation between measured and theoretical values ​​≤20%, below the 0.2 cm / s warning value. It is suitable for blasting projects around dilapidated buildings, offering strong safety and reproducibility.