3494results about "Blasting" patented technology

The invention discloses a tunnel deep-buried drainage ditch rapid blasting excavation method based on vertical drilling, which comprises the following steps: step 1, detecting the geology in front of a tunnel by using vertical drilling coring, geological radar and TSP seismic wave technology, and constructing a three-dimensional model; 2, generating an asymmetric hole net layout based on a geological model and AI, and setting a drilling-free vibration isolation belt; the design of dense inside and sparse outside is adopted, and vibration propagation is blocked; thirdly, a three-stage air spacer is arranged at the bottom of the blast hole, segmented charging is implemented, the explosive energy release time is prolonged, and the single-segment explosive quantity peak value is reduced; fourthly, an electronic detonator is adopted for millisecond detonation, and peak vibration is weakened through the waveform superposition offset effect; 5, arranging fiber grating sensors in the tunnel, collecting data in real time and transmitting the data to the cloud AI platform; dynamically adjusting parameters based on the monitoring data; and 6, evaluating a blasting effect through a three-dimensional laser scanner, generating an evaluation report in combination with data, updating a BIM model database, and continuously optimizing an AI algorithm.

The invention discloses a blasting design-oriented multi-source data fusion preprocessing method, and particularly relates to the technical field of blasting data scientific processing. Comprising the following steps: acquiring multi-source heterogeneous data of a blasting area through a multi-source sensor array and a geological modeling system, establishing a multi-modal data unified representation framework based on ontology, constructing a depth feature fusion network with physical constraints, developing a blasting parameter optimization-oriented mixed integer programming model, and establishing a blasting parameter optimization-oriented mixed integer programming model; integrating a multi-target genetic algorithm and an expert experience knowledge base to perform parameter optimization; according to the method, a multi-mode unified representation framework based on the ontology is constructed, millimeter-level space alignment and millisecond-level time synchronization of multi-source data are achieved through a space-time reference coordinate system and an improved DTW-B spline composite algorithm, the spatial resolution of blasting design is improved to the centimeter level, the time synchronization precision reaches the millisecond level, and the time synchronization efficiency is improved. Compared with a traditional method, the data utilization rate is increased by more than 40%, and a solid foundation is laid for fine blasting design.

The invention provides an intelligent optimization method and system for tunnel smooth blasting blast holes in layered rock mass, and belongs to the technical field of tunnel engineering and blasting. The method comprises the steps of collecting stratified rock geological data, evaluating and extracting features, constructing a multi-objective optimization function, solving by an intelligent optimization algorithm, performing construction feedback and dynamic optimization and the like. The method comprises the following steps of: acquiring data by using various geological exploration equipment, performing evaluation processing on the data by using a support vector machine model, constructing an optimization function considering multiple indexes, solving an optimal blast hole parameter combination by combining a genetic algorithm and a particle swarm optimization algorithm, and finally feeding back a blasting effect to dynamically adjust an optimization scheme. According to the intelligent optimization method and system for the smooth blasting blast holes of the tunnel in the layered rock mass, the blasting effect can be improved, over-break and under-break and concrete consumption can be reduced, the construction cost can be reduced, the construction safety and efficiency can be enhanced, and remarkable economic and social benefits can be achieved for layered rock mass tunnel engineering construction.

The invention discloses a method for determining the distance between blasting unit groups for a surface mine, a rapid adjusting device and a blasting operation system. The determination method comprises the following steps: acquiring multi-dimensional data through a geological radar, a sensor and the like, and constructing a model through normalization processing; a finite element-discrete element coupling algorithm is adopted to carry out three-dimensional geology-blasting coupling modeling, an improved NSGA-III algorithm is combined to solve a multi-objective function to determine an optimal interval, and Kalman filtering is utilized to realize real-time feedback correction. The rapid adjusting device comprises a multi-angle adjusting module, an intelligent navigation module and a cooperative control module, and accurate positioning and rapid adjusting can be achieved. According to the method, a modeling-calculating-adjusting-feedback full-process automatic system is formed, and compared with a traditional technology, the lumpiness qualification rate can be increased by 25% or above, the interval adjusting time is shortened to be within 15 minutes, and the mine blasting efficiency and safety are effectively improved.

The invention discloses a large-section long-footage mechanical blasting mixed excavation method suitable for a subway station, and relates to the technical field of underground rail transit engineering, and the method comprises the following steps: obtaining a tunnel section contour, a geologic structure and blasting parameters, building a three-dimensional blasting wave propagation inversion model, and combining geology and material heterogeneity to obtain a three-dimensional blasting wave propagation inversion model; and identifying a closed space region forming reflection interference, and predicting a space point location where blasting wave energy is abnormally accumulated. Based on the three-dimensional blasting wave propagation inversion model, the abnormal wave energy accumulation area is predicted in combination with geological heterogeneity, the high-risk blasting section is recognized, parameters are reconstructed, vibration real-time monitoring and model feedback correction are assisted, a closed-loop control system is constructed, local wave crest abnormity is effectively restrained, and the safety and controllability of large-section tunnel blasting construction are improved.

The invention discloses an intelligent blasting sequence control system for mixed loading explosives, which is provided with a data acquisition module, a data preprocessing module, a model construction module, a parameter optimization module, a multi-target control module and a data storage module to intelligently control the blasting sequence of the mixed loading explosives. Distance attenuation features, delay features, topographic features and blasting energy features of blasting data are constructed, the blasting prediction model is updated and iterated based on a neural network algorithm and historical blasting data information, and the performance of the blasting prediction model is evaluated. The number of hidden layers and the number of nodes in the blasting prediction model are updated and optimized through a control variable method, the blasting prediction model is optimized, when mixed explosive is adjusted and the blasting sequence is optimized, the optimal mixed explosive composition is searched through a search optimization algorithm, and the optimal mixed explosive composition is obtained through control signals in combination with real-time blasting data information. And the blasting sequence and delay are dynamically adjusted, so that the blasting of the mixed explosive is intelligently and accurately controlled in real time.

The invention relates to the technical field of mining, and discloses a method for determining pre-splitting blasting parameters for mining blasting, which comprises the following steps of: 1, acquiring rock mass structure information of a blasting area through three-dimensional geological radar, laser radar and shallow seismic reflection data, and constructing a structural plane distribution map containing a soft and hard interbed and joint combination mode; 2, initial presplitting blasting parameters are generated based on the structural plane distribution map, wherein the initial presplitting blasting parameters comprise the hole distance, the linear charge density and the charge structure; according to the method, the technical scheme that the structural plane distribution map is constructed through multi-source geological data fusion and digital twinborn simulation dynamic correction is adopted, so that the technical effects that the influence of a complex structure combination on blasting energy transfer is accurately quantified, and the presplitting path control precision is remarkably improved are achieved; compared with the technical scheme depending on a static rock mass model or an empirical formula in the prior art, the defects of presplitting path offset and serious parameter mismatch caused by the fact that modeling is not carried out due to the dynamic effect of the structural plane are overcome.

The invention provides a tunnel blasting scheme determining method and device, and relates to the technical field of tunnel engineering data processing.The method compensates stress wave attenuation caused by large-aperture blast hole air gaps through radial explosive density gradient design, so that the energy utilization rate is higher; the axial charge density is dynamically adjusted on the basis of a three-dimensional clamping coefficient, the problem that energy of a hole bottom high constraint area is insufficient is solved, the explosive density and the hole net topology are collaboratively optimized, the contour forming quality is greatly improved, back break is reduced, and therefore the cost is reduced, and the time is shortened. Due to the fact that explosive and hole net parameters are optimized, energy distribution is more reasonable, blasting disturbance is reduced, stability of surrounding rock is enhanced, safety in a hole is greatly improved, and casualties are reduced.

The invention discloses a complex geological weak surrounding rock tunnel micro-disturbance green blasting construction method which comprises the following steps: acquiring multi-source data through a sensor and geological survey equipment, and extracting a standardized feature set; and constructing a blasting parameter and surrounding rock response prediction model by using a random forest algorithm, inputting explosive load and hole net parameters, and outputting predicted surrounding rock deformation and vibration values. And if the vibration value exceeds the environment-friendly threshold value, adjusting the parameter by adopting a gradient descent algorithm until the requirement is met. And in combination with real-time monitoring data, the surrounding rock response is dynamically updated by using a Kalman filtering algorithm. If the overexcavation probability exceeds the threshold value, the parameters are further optimized through a genetic algorithm. And finally, optimizing resource allocation through a linear programming algorithm, and determining a final blasting scheme. Intelligent regulation and control of blasting parameters of the weak surrounding rock tunnel are achieved, vibration and deformation are effectively controlled, the overexcavation risk is reduced, the construction efficiency and quality are improved, and a new technical scheme is provided for similar projects.

The invention relates to the technical field of underground engineering and geotechnical mechanics, and provides an ABAQUS secondary development-based underground engineering blasting simulation method, which comprises the following steps of: 1, establishing a geometric model and dividing a calculation region into an Euler domain and a Lagrange domain; step 2, calling and realizing a JH-2 constitutive model through a UMAT user subprogram interface of the ABAQUS; step 3, modeling in an Euler domain by adopting a JWL state equation; step 4, applying a coupling Euler-Lagrange method; 5, setting boundary conditions and blasting loading parameters of the geometric model; and step 6, performing transient dynamics calculation, and outputting a result for analyzing a blasting effect. According to the scheme, a high-precision numerical test platform can be provided for underground engineering blasting design and safety control, engineering risks are reduced, blasting parameter configuration is optimized, and remarkable engineering application value and popularization significance are achieved.

The invention discloses a V-shaped mine collecting trench construction method for improving the stability of a roadway in an ore pillar, which comprises the following steps of: constructing a plurality of rows of upward fan-shaped blast holes along the trend of a stope, and adding an empty hole in the middle position of each of the left side hole and the right side hole in the adjacent rows of fan-shaped blast holes; the fan-shaped blast holes are filled with explosives, and newly-added empty holes are not filled with explosives; and the cutting raise is used as a blasting free surface, and the fan-shaped blast holes are detonated row by row in several times to form the V-shaped mine collecting trench. According to the method, through cracks are formed along the center connecting lines of the side holes under the guiding effect of the newly-added empty holes during fan-shaped hole blasting, cutting of the V-shaped boundary is completed, damage of fan-shaped blast hole blasting to ore pillar rock mass is reduced, and the purposes of improving the integrality of ore removal roadway surrounding rock and the stability of an ore removal roadway are achieved. The V-shaped ore collecting trench construction method is suitable for V-shaped ore collecting trench construction of a stope bottom structure of an open stope subsequent filling mining method, damage to ore pillar rock mass can be weakened in the V-shaped ore collecting trench construction process, and then the stability of an ore removal roadway is improved.

An explosive downhole tool includes a housing having an upper housing part on one side of a window section and a lower housing part on an opposite side of the window section. An explosive charge is provided within the housing for cutting or expanding the wall of the tubular. The majority of outer surface of at least one of the upper and lower housing part in cross-section is rounded so as to be devoid of corners. The rounded surface eliminates the presence of sharp corners that may catch on restrictions or protrusions in a wellbore so that the downhole tool is more easily conveyable within a wellbore. Another explosive downhole tool includes fins extending from the housing. The fins have a height that decreases in a direction away from the housing. The shape of the fins enables the downhole tool to be more easily conveyable within the wellbore.

The invention discloses a self-adaptive pre-pressure-relief danger relieving device for a deep mine. The self-adaptive pre-pressure-relief danger relieving device comprises a supporting assembly. The supporting assembly comprises two side supporting plates which are symmetrically arranged, a top supporting plate is installed on the tops of the side supporting plates through connecting plates, and a plurality of pressure relief buffering assemblies which are arranged at equal intervals are installed on the outer walls of the side supporting plates and the outer wall of the top supporting plate. A pressure relief channel is established through the drilling assembly, continuous and directional hydraulic pressure relief is achieved in combination with the jet flow pressure relief assembly, rock mass fractures are effectively expanded, in addition, high-energy shock waves can be rapidly released through the blasting pressure relief assembly, strong pressure relief is achieved, and the device is suitable for a high-stress area; the jet flow pressure relief assembly and the blasting pressure relief assembly are switched in the hollow anchor rod, and an external water supply system and a blasting control system are connected, so that a mine has high adaptive capacity and safety performance according to different pressure relief requirements.

The invention discloses an anti-static flexible fracturing rock breaking pipe based on a conductive oxygenating conduit, which comprises a flexible outer sleeve film with two closed ends and filled with an adsorbing material combustion agent, and further comprises the conductive oxygenating conduit penetrating into the flexible outer sleeve film from the top of the flexible outer sleeve film, an excitation wire and an exhaust pipe, the excitation wire is connected with an electric ignition device, and the electric ignition device is positioned in the flexible outer sleeve film and is in contact with the adsorption material combustion agent; the outer wall of the conductive oxygenation conduit is connected with a conductive unit. The invention further discloses a rock breaking method using the anti-static flexible fracturing rock breaking pipe based on the conductive oxygenating guide pipe, the conductive unit is arranged on the conductive oxygenating guide pipe and makes contact with the ground for conduction, static electricity generated in the filling process of liquid oxygen or pressurized high-purity liquid oxygen can be guided out and eliminated, and the anti-static flexible fracturing rock breaking pipe based on the conductive oxygenating guide pipe can be used for breaking rocks. Static electricity generated in the filling process of liquid oxygen or high-purity liquid oxygen with pressure can be conducted away and eliminated more efficiently, timely and continuously, and the risk of safety accidents caused by the static electricity is greatly reduced.

The invention discloses a double-row medium-length hole blasting method for a filling stope. According to the method, a theoretical value range of each blasting parameter is deduced according to field engineering practice, an ore rock blasting crushing mechanism and a blasting parameter theoretical formula. The method comprises the following steps of: constructing a stope blasting model with different hole bottom distances, explosive unit consumption and resistance line combinations by using ANSYS numerical simulation software in combination with physical and mechanical properties of ore rocks and field explosive performance parameters, and preferably selecting double-row medium-length hole blasting parameters according to a chamber effective stress distribution rule and a roof area vibration velocity peak value of the ANSYS blasting model. According to the method, by selecting the double-row optimal medium-length hole blasting parameters, it is guaranteed that ore rocks in the chamber are fully crushed, the effective stress invading the roof and the blasting vibration velocity peak value are reduced, and the roof is prevented from being damaged. And meanwhile, the explosive loading amount is reduced, the economic cost is reduced, and the production efficiency of a mine is improved.

The invention discloses a tunnel peripheral hole smooth blasting parameter intelligent optimization system and method, and relates to the technical field of blasting, and the system comprises a data management module, a factor identification module and a parameter optimization and scheduling module. Dynamic adjustment and scheduling optimization of the blasting parameters are achieved by collecting blasting data in real time, extracting key parameters, screening influence factors in combination with a factor recognition algorithm and constructing a parameter scheduling optimization model, and the system can effectively improve scientificity and accuracy of blasting design, so that efficient, accurate and self-adaptive optimization of the blasting parameters can be achieved; and the requirements of high quality and high efficiency of modern tunnel engineering construction are met.

The invention provides a broken thick and large ore body combined mining method based on medium-length hole blasting and drift type cooperation, and belongs to the field of ore body mining. Firstly, an ore body is segmented and partitioned, blocks are formed in a three-dimensional space, then the blocks are alternately operated through sequential control, meanwhile, the positions of a pre-splitting area and a recovery area are limited in the space, and the positions of the pre-splitting area and the recovery area are determined; and safe and efficient mining of the broken thick and large ore body is realized in cooperation with a medium-length hole subsection presplitting blasting and drift stoping process. According to the method, on the basis that the broken thick and large ore body is segmented and partitioned, and time sequence and space regulation and control are conducted on operation of the blocks, medium-length hole blasting is used for presplitting the ore body, controllable caving lumpiness is formed, direct disturbance to a recovery area is reduced, caved ore is efficiently recovered by adopting access road type mechanical equipment, and the recovery efficiency is improved. The large-scale caving advantage of the medium-length hole sublevel mining method is exerted, safe and efficient recovery of the broken ore body is guaranteed through drift type mining, and remarkable technical breakthrough is achieved.

The invention discloses a comprehensive blasting method for controlling muck pile lumpiness and vibration in surface mine blasting, which comprises the following steps: S1, early-stage preparation and parameter calculation: investigating the geological condition of a mine in detail, and obtaining such information as rock physical and mechanical properties and joint fissure distribution; according to rock properties and mining requirements, blast hole parameters are determined; calculating initial delay detonation time according to a delay blasting rock breaking principle; s2, optimizing a charging structure: selecting a water medium interval charging structure, and determining the optimal unit consumption through theoretical analysis and field test; and based on the optimal unit consumption, establishing three-dimensional models of different water medium interval charging structures by adopting numerical simulation software, and selecting the optimal water medium interval charging structure. According to the method, the muck pile lumpiness is effectively controlled; the blasting vibration intensity is reduced; the blasting quality and the economic benefit are improved; the adaptability is high.

A detonator housing facilitates assembly of detonator components of a perforating gun. In an example, the detonator housing comprises a housing body configured for coupling to a charge tube of a perforating gun. A detonator receptacle is formed on the housing body for receiving a detonator. A detonating cord receptacle is formed on the housing body adjacent the detonator receptacle for receiving an end portion of a detonating cord in an overlapping relationship with the detonator. A detonating cord stop is formed on the detonating cord receptacle to limit an insertion depth of the detonating cord within the detonating cord receptacle.

The invention provides a blasting control method for simultaneously creating a free surface in advance by front-row holes in a slag pressing blasting area, which comprises the following steps of: arranging front-row blast holes and rear-row blast holes: arranging the front-row holes in the slag pressing area along a free surface direction, arranging rear-row holes in a main blasting area, and arranging according to a preset hole distance, a preset row distance, a preset hole depth and a preset charging coefficient; the front-row holes are set to be at the same detonation moment, so that synchronous detonation of the front-row holes earlier than that of the rear-row holes is achieved, the same multi-section charging is conducted in the blast holes of the front-row holes, and multi-section detonator detonation can be conducted in the same high-frequency millisecond detonation mode; setting delayed detonation of the rear row holes: setting the detonation moment of the rear row holes to be 10-20ms after the last section of detonation moment of the adjacent front row holes; and detonating implementation: detonating control is carried out by adopting a blasting network established by digital electronic detonators. According to the method, a continuous and stable free surface can be formed in the slag pressing blasting area, the crushing effect of follow-up blasting is improved, and the boulder yield is reduced.

The invention relates to the technical field of blasting charging devices, in particular to a surface mine pre-splitting blasting parameter design method which comprises the following steps: acquiring P-wave velocity and differentially constructing a stiffness sequence, mapping a hole depth axis to identify a sudden change area, monitoring displacement and crack rate to extract triaxial deformation, identifying an unstable rock section and setting a charging section. According to the method, the P-wave speed is obtained, differential processing is carried out on the P-wave speed, the P-wave speed is converted into the rigidity gradient change rate, the rigidity gradient change rate is mapped to a hole depth axis recognition sudden change area, crack propagation and hole wall displacement are monitored, and an unstable rock stratum is positioned; and three-axis deformation is extracted to enhance prediction precision, a charging section is set, the dosage is calculated, the energy release efficiency is optimized, and blasting interference optimization is carried out by combining the time delay difference and the inter-hole included angle division distance.

The invention provides a laser plasma sound barrier and magneto-rheological antiknock array collaborative protection method. The method comprises the following steps: firstly, constructing a collaborative protection structure consisting of a laser plasma sound barrier layer and a magneto-rheological antiknock array layer; a shock wave leading signal is detected in real time and input into a preset multi-dimensional feature model, the model dynamically generates a protection strategy, and a sound barrier instruction and an anti-explosion instruction are output respectively. The laser plasma sound barrier layer outputs specific reverse sound waves according to a sound barrier instruction and attenuates shock waves through destructive interference; meanwhile, the magneto-rheological anti-explosion array layer instantaneously solidifies a magnetic field according to an anti-explosion instruction, and shock wave energy is efficiently absorbed. According to the laser plasma sound barrier and magneto-rheological anti-explosion array cooperative protection method provided by the invention, the cooperative protection structure and the preset multi-dimensional feature model are constructed, so that the cooperative effect of the sound barrier and the anti-explosion array is realized, the response speed to shock waves is increased, the energy processing efficiency is improved, and the adaptability and reliability of protection are enhanced.

The invention discloses a drilling, deslagging, charging and blocking integrated device, which belongs to the technical field of tunnel engineering and open-air engineering blasting equipment, and comprises a mobile vehicle body, a multi-link structure, a drilling and deslagging device, an explosive filling device and a stemming blocking device. The drilling and deslagging device is used for drilling and discharging drilling cuttings; and the explosive filling device independent track is arranged above the drilling machine beam track in parallel and is used for accurately conveying detonators and emulsion explosives into holes. After drilling is completed, the explosive filling device moves downwards in parallel to be aligned with the hole site for charging; after charging, the device moves upwards to drive the stemming plugging device to reach an orifice, and drilling cuttings discharged by drilling are directly used as stemming raw materials for automatic compaction and plugging. The problems that in the traditional blasting construction process, equipment is frequently switched, the manual operation efficiency is low, high-risk link manual operation needs to be conducted, and stemming raw materials need to be prepared independently are solved, automatic continuous operation of the whole process of drilling, charging and plugging is achieved, and the construction efficiency and intrinsic safety are remarkably improved.

The utility model provides an underwater explosion efficient shaped charge cutting device based on combined charge, which comprises an underwater annular shaped charge structure and a positioning device, the positioning device is connected with a semi-annular shaped charge structure through a connecting device, and the outer side of the semi-annular shaped charge structure is connected with a detonator; the two positioning devices are arranged on the outer side of the cutting position of the target tubular structure, and the two positioning devices are fixed to each other; the two semi-annular shaped charge structures are arranged on the outer side of the cutting position of the target tubular structure, the two semi-annular shaped charge structures are fixed to each other, and each semi-annular shaped charge structure comprises a plurality of equally-divided cutting units. The cutting end face formed by the underwater explosion cutting device has high fairness, the refinement level of underwater explosion cutting is improved, the underwater explosion cutting device is suitable for cutting tubular structures in any direction and with any structural parameters on the seabed, deep water cutting operation can be achieved, and the underwater explosion cutting device can also be used for cutting structures with rigid body displacement after underwater explosion of flexible bodies such as steel cables, optical cables and electric cables.

The invention discloses a coal mine deep hole blasting charging device and charging method, and belongs to the technical field of coal mine deep hole blasting, the coal mine deep hole blasting charging device comprises a charging pipe and a plurality of explosive blocking arms, the inner wall of the charging pipe is connected with a detonating cord mounting pipe and a plurality of rotating rod mounting pipes, and rotating rods are rotationally mounted in the rotating rod mounting pipes; a blocking arm mounting notch is formed in the side wall of the rotating rod mounting pipe; the explosive blocking arm is connected with the rotating rod and can be driven by the rotating rod to rotate in the blocking arm mounting notch; the explosive blocking arm is of an arc-shaped structure matched with the inner wall of the explosive charging pipe. During use, a detonating cord is placed in the detonating cord mounting pipe, and the charging pipe is placed in a drill hole; the explosive charge is loaded into the charge tube, and the operation rotating rod is rotated to drive the explosive blocking arm to rotate, so that the explosive blocking arm blocks and supports the explosive charge, and air interval charge is realized. The explosive charging pipe provides a smooth explosive charging path space for the explosive packages, and high efficiency and safety of explosive charging are achieved; the interval of explosives can be accurately controlled, displacement of explosive packages is avoided, the blasting effect is guaranteed, and potential safety hazards are avoided.

A method for predicting solid material dislodgement due to explosive blasting, the method including: representing pre-blast solid material with a set of discrete particles, each with a 3D location and one or more mechanical properties of the solid material at that 3D location before the explosive blasting; representing at least one explosive blast with a blast time and a set of explosive particles, each with a 3D blast location in the pre-blast solid material and an initial internal energy; repeatedly, for a plurality of time steps, defining a 3D grid surrounding the discrete particles (e.g., plus two empty grid cells in each direction), and numerically determining / calculating updated velocities and updated 3D locations of the discrete particles based on the mechanical properties and the 3D locations, using the 3D grid; for at least one of the time steps corresponding to the or each blast time, including the explosive particles with the discrete particles to numerically determine the velocities and updated 3D locations of the discrete particles, and numerically determining / calculating the updated velocities and the updated 3D locations at the time steps after the or each blast time using the initial internal energies; and determining post-blast locations of the solid material using the repeatedly updated 3D positions of the discrete particles and the pre- blast solid properties of those discrete particles.

The invention relates to a safety control method for underwater blasting in a sensitive area. The method comprises the following steps: acquiring rock hardness data and a fracture development grade of a target area; acquiring underwater flow velocity data, and acquiring hole net parameters and explosive distribution positions in combination with the rock hardness data and the fracture development grade; vibration data and shock wave data in the blasting process are collected and processed, and the processed vibration data and shock wave data are obtained; according to the processed vibration data and shock wave data, the concentration degree of blasting energy release is judged through preset indexes, and the preset indexes are an energy concentration index and a crushing uniformity index; and if the concentration degree of blasting energy release is smaller than the preset value, the charging structure is adjusted, and blasting operation is executed. According to the method, the safety of underwater blasting in the sensitive area can be improved.

The invention discloses a novel pillar-free shallow hole shrinkage mining method with stud recovery, which comprises the following steps of: stoping ore bodies from top to bottom, and stoping a to-be-mined room (9.1) and a to-be-mined stud (8.1) of a next middle section after stoping of the previous middle section of ore body is finished; a stoping stud (8.2) is communicated with an outside-vein pedestrian ventilation filling raise (6) arranged on a footwall surrounding rock (16) of an ore body through a stud connection way (5), the lower end of the outside-vein pedestrian ventilation filling raise (6) is communicated with the top of a middle section stud ore removal roadway (10), and the top end of the outside-vein pedestrian ventilation filling raise (6) is communicated with an upper middle section stud ore removal roadway (3). And the right end of the upper middle section column ore removal roadway (3) is communicated with the upper middle section haulage roadway (2). According to the method, the problems of large intermediate pillar ore loss and difficulty in recovery in a traditional shallow hole shrinkage method are solved, the resource recovery rate is increased to 88% or above, the compressive strength of the filled artificial intermediate pillar is superior to that of a primary pillar, and the stope stability is remarkably improved.

The invention relates to the technical field of mining engineering, in particular to a goaf blasting parameter design scheme optimization method and system. The method comprises the following steps: analyzing stratum complexity based on goaf distribution and fracture density; according to the rock mechanical parameters and the stratum stress data, the rock anti-knock strength is calculated; the dynamic stability of the goaf is evaluated, and a blasting adaptability coefficient is obtained through the stratum complexity, the rock anti-explosion strength and the dynamic stability; calculating an energy balance coefficient by utilizing the stratum disturbance energy and the blasting energy utilization rate; and based on a genetic algorithm, in combination with the blasting suitability coefficient and the energy balance coefficient, obtaining a goaf blasting parameter design optimal scheme. The method is suitable for underground or open blasting engineering with the goaf, accurate matching of blasting parameters, stratum conditions, goaf stability and engineering actual effect can be achieved, and the problem that goaf blasting safety control, operation efficiency and implementation effect are difficult to comprehensively consider is solved.

The medium-length hole mining method under the complex geological condition comprises the following steps that S1, a stope is divided, specifically, the stope is divided into two stages along the inclination direction of an ore body, and bottom columns are not reserved; s2) roadway construction; s3) stoping: taking the cutting raise and the transverse cutting roadway as double free surfaces, and constructing medium-length hole blasting in a retreating manner from the middle to the two ends; s4) drilling and blasting; s5) transporting the ores; and S6) ventilation and dust prevention. The method is suitable for mining inclined ore bodies with thick ore bodies, unstable IV-level surrounding rock stability, extremely unstable V-level local parts and inclination angles of 30-50 degrees. By means of the non-sill-pillar structure and the 25-m stage interval and the through ore removal access road of the outside-vein transportation roadway, 15%-20% of sill pillar resource loss in a traditional method can be eliminated, the ore recovery rate is greatly improved, dead ore resources in a mining area are activated, and the service life of a mine is prolonged.