Parameter design method, device and equipment for controlling blasting lumpiness of shallow hole step of hard-rock cavern based on plum-blossom-shaped horizontal hole distribution, and medium

Abstract

The invention discloses a parameter design method, device and equipment for hard-rock cavern shallow-hole bench blasting lumpiness control based on plum-blossom-shaped horizontal hole arrangement and a medium. The method comprises the steps that a plurality of initial blasting design schemes are constructed; constructing a blasting load tunnel surrounding rock damage calculation model, and determining a working face surrounding rock damage degree under each initial blasting design scheme; an initial blasting design scheme with the working face surrounding rock damage degree lower than a damage threshold value is reserved; determining the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the reserved initial blasting design scheme; and according to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the reserved initial blasting design schemes, screening from the reserved initial blasting design schemes to obtain an optimal blasting design scheme. The invention belongs to the field of blasting design. The construction efficiency and economical efficiency can be improved while the engineering safety can be guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of blasting design, in particular to a parameter design method, device, equipment and medium for block size control of hard rock cavern shallow hole bench blasting based on horizontal distribution of plum-blossom type holes. BACKGROUND

[0002] A large number of complex horizontal structural planes such as faults, joints and fissures develop in natural rock mass, which will cause problems such as stress wave reflection, explosion gas escape and energy distribution imbalance, and further cause uneven rock fragmentation and increase of large block rate, which has adverse effects on subsequent shovel loading and transportation efficiency.

[0003] In recent years, research on rock mass blasting block size control has focused on the influence of joint characteristics on blasting effect, and empirical hole pattern parameter design is often used in engineering practice, but the regulation mechanism of the coupling relationship between hole distribution mode and structural plane is lack of systematic research, especially the synergistic effect of horizontal structural plane and hole distribution mode is not clear, and in the blasting practice of complex jointed rock mass, the problems of excessive fragmentation and high large block rate are still easy to occur, and the problem of insufficient safety may also be caused. Therefore, how to ensure the safety of the scheme in the blasting scheme design is a problem to be solved. SUMMARY

[0004] The present application provides a parameter design method, device, equipment and medium for block size control of hard rock cavern shallow hole bench blasting based on horizontal distribution of plum-blossom type holes, which solves the technical problem of insufficient safety of the blasting scheme in the prior art and achieves the technical effect of improving the safety of the blasting scheme.

[0005] In a first aspect, the present application provides a parameter design method for block size control of hard rock cavern shallow hole bench blasting based on horizontal distribution of plum-blossom type holes, comprising: constructing a plurality of initial blasting design schemes, wherein each initial blasting design scheme at least includes a cut hole, a functional hole charge, a footage, a detonation segment position and a segment delay; constructing a blasting load tunnel surrounding rock damage calculation model, and determining the working face surrounding rock damage degree under each initial blasting design scheme based on the blasting load tunnel surrounding rock damage calculation model; retaining the initial blasting design scheme whose working face surrounding rock damage degree is lower than the damage threshold; determining the working face blasting peak vibration velocity and the maximum vibration speed of the surface building corresponding to the retained initial blasting design scheme; According to the working face blasting peak vibration velocity and the maximum vibration speed of the surface building corresponding to the retained initial blasting design scheme, the optimal blasting design scheme is selected from the retained initial blasting design scheme.

[0006] Furthermore, based on the peak vibration velocity of the working face blasting and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design schemes, the optimal blasting design scheme is screened from the retained initial blasting design schemes, including: If the peak vibration velocity of the working face blasting of the retained initial blasting design is greater than the first vibration velocity threshold, or the maximum vibration velocity of the surface building is greater than the second vibration velocity threshold, the retained initial blasting design is discarded to update the retained initial blasting design; Among the updated retained initial blasting design schemes, the initial blasting design scheme with the least number of slot holes or the least amount of explosives filled in the functional holes is taken as the optimal blasting design scheme.

[0007] Furthermore, based on the peak vibration velocity of the working face blasting and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design schemes, the optimal blasting design scheme is screened out from the retained initial blasting design schemes, further comprising: Determine the vibration velocity index of the retained initial blasting design scheme based on the peak vibration velocity of the working face blasting and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme; For the retained initial blasting design scheme with the lowest vibration velocity index, if the peak vibration velocity of the working face blasting of the initial blasting design scheme is less than or equal to the first vibration velocity threshold, and the maximum vibration velocity of the surface building is less than or equal to the second vibration velocity threshold, then the retained initial blasting design scheme with the lowest vibration velocity index will be taken as the optimal blasting design scheme.

[0008] Furthermore, based on the peak vibration velocity of the working face blasting and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme, the vibration velocity index of the retained initial blasting design scheme is determined, including:

[0009] in, For the The vibration velocity index of the retained initial blasting design, weight, For the The peak vibration velocity of the working face blasting of the retained initial blasting design scheme, For the The maximum vibration velocity of the surface building for the retained initial blasting design scheme.

[0010] Furthermore, the peak vibration velocity of the working face blasting and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme are determined, including:

[0011] in, is the maximum vibration velocity, are geological condition coefficients, is the amount of functional hole charge of a single section, is the distance from the observation point to the blasting source.

[0012] Further, a blasting load tunnel surrounding rock damage calculation model is constructed, and based on the blasting load tunnel surrounding rock damage calculation model, the working face surrounding rock damage degree under each initial blasting design scheme is determined, including: determining the geological conditions of the to-be-blasted point, the geological conditions at least including rock type, structure surface distribution, and rock physical properties; constructing a blasting load tunnel surrounding rock damage calculation model based on the LS-DYNA software and according to the geological conditions of the to-be-blasted point; bringing the initial blasting design scheme into the blasting load tunnel surrounding rock damage calculation model to obtain the working face surrounding rock damage degree under each initial blasting design scheme.

[0013] Further, the initial blasting design scheme further includes: hole depth, hole spacing and row spacing, charging structure, and plugging length.

[0014] In a second aspect, the present application provides a parameter design device for controlling block size in shallow hole bench blasting of hard rock caverns based on a quincunx horizontal hole arrangement, comprising: a scheme construction module configured to construct a plurality of initial blasting design schemes, wherein each initial blasting design scheme at least includes a cut hole, a functional hole charge amount, a footage, a blasting section position, and a section delay time; a model construction module configured to construct a blasting load tunnel surrounding rock damage calculation model, and based on the blasting load tunnel surrounding rock damage calculation model, determine the working face surrounding rock damage degree under each initial blasting design scheme; a damage screening module configured to retain the initial blasting design scheme whose working face surrounding rock damage degree is lower than a damage threshold value; a vibration velocity screening module configured to determine the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme; an optimal scheme module configured to screen an optimal blasting design scheme from the retained initial blasting design scheme according to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme.

[0015] In a third aspect, the present application provides an electronic device, comprising: a processor; a memory for storing processor-executable instructions; The processor is configured to perform to realize the parameter design method for controlling the block size of the horizontal-hole-based hard rock chamber short-hole bench blasting provided in the first aspect.

[0016] In a fourth aspect, the present application provides a non-transitory computer-readable storage medium, when instructions in the non-transitory computer-readable storage medium are executed by a processor of an electronic device, the electronic device can execute the parameter design method for controlling the block size of the horizontal-hole-based hard rock chamber short-hole bench blasting provided in the first aspect.

[0017] The one or more technical solutions provided in the present application have at least the following technical effects or advantages: The present application optimizes the parameters of hard rock chamber short-hole bench blasting through a systematic design method, ensuring the safety and efficiency of construction. The present application provides a variety of choices for subsequent screening by constructing multiple initial blasting design schemes and setting key parameters such as the amount of cut hole and functional hole. The present application evaluates the damage degree of each scheme to the surrounding rock by using the blasting load tunnel surrounding rock damage calculation model, and only retains the design scheme that meets the safety standard. The present application screens the optimal scheme by accurately predicting and controlling the peak vibration speed of the working face and the maximum vibration speed of the surface building. The present application not only effectively reduces the impact of blasting on the surrounding rock and the surrounding environment, but also improves the consistency and predictability of the breaking effect, thereby ensuring the safety of the project while improving the construction efficiency and economy, especially suitable for underground engineering construction under complex geological conditions. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The flowchart of the parameter design method for controlling the block size of the horizontal-hole-based hard rock chamber short-hole bench blasting provided by the present application is shown in the figure. Figure 2 The structural diagram of the parameter design device for controlling the block size of the horizontal-hole-based hard rock chamber short-hole bench blasting provided by the present application is shown in the figure. DETAILED DESCRIPTION

[0020] The embodiments of the present application provide a parameter design method for controlling the block size of the horizontal-hole-based hard rock chamber short-hole bench blasting, which solves the technical problem of insufficient safety of the blasting scheme in the prior art.

[0021] The technical solution of the present application is to solve the above technical problems, and the general idea is as follows: The parameter design method for controlling the block size of the horizontal hole step blasting of the hard rock chamber based on the plum-blossom type horizontal hole comprises the following steps: constructing a plurality of initial blasting design schemes, wherein each initial blasting design scheme at least comprises a slotting hole, a functional hole charge amount, a footage, a detonation segment position, and a segment delay; constructing a blasting load tunnel surrounding rock damage calculation model, and determining the working face surrounding rock damage degree under each initial blasting design scheme based on the blasting load tunnel surrounding rock damage calculation model; retaining the initial blasting design scheme whose working face surrounding rock damage degree is lower than the damage threshold; determining the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme; and selecting the optimal blasting design scheme from the retained initial blasting design schemes according to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design schemes.

[0022] In order to better understand the above technical solution, the above technical solution will be described in detail in combination with the drawings in the specification and the specific embodiments.

[0023] First of all, the term "and / or" appearing in this paper is only to describe the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0024] The present application provides a parameter design method for controlling the block size of the horizontal hole step blasting of the hard rock chamber based on the plum-blossom type horizontal hole as shown in Figure 1 The parameter design method comprises steps S11-S15: Step S11, constructing a plurality of initial blasting design schemes, wherein each initial blasting design scheme at least comprises a slotting hole, a functional hole charge amount, a footage, a detonation segment position, and a segment delay.

[0025] Each parameter is explained as follows: Slotting hole (position): a drill hole located in the center area of the excavation face, which is used to initiate first and provide a free surface for subsequent blasting. The slotting hole is used to improve the efficiency of subsequent blasting and reduce the clamping effect.

[0026] Functional hole charge amount: the explosive charge amount of each hole except the slotting hole. The functional hole charge amount is used to determine the blasting energy size, which directly affects the broken block size, vibration speed, and surrounding rock damage.

[0027] Advance: The length of the excavation after one blasting, i.e. the distance of the forward advance after each blasting. The advance is used to affect the cycle times, construction efficiency and blasting stability, and can be combined with the slotting form, rock hardness, equipment capacity and other factors to preset the advance value (such as 1.0-2.0 meters).

[0028] Delay: The time interval between the adjacent two initiation segments, usually in milliseconds (ms).

[0029] Delay: The time interval between the adjacent two initiation segments, usually in milliseconds (ms).

[0030] It can be understood that at least one of the parameters in each initial blasting design scheme is different.

[0031] In addition, the initial blasting design scheme also includes hole depth, hole spacing and row spacing, charge structure, and plug length.

[0032] Step S12, a blasting load tunnel surrounding rock damage calculation model is constructed, and the working face surrounding rock damage degree under each initial blasting design scheme is determined based on the blasting load tunnel surrounding rock damage calculation model.

[0033] Specifically, it includes: determining the geological conditions of the blasting point, the geological conditions at least including rock type, structure surface distribution and rock physical properties; based on the LS-DYNA software, the blasting load tunnel surrounding rock damage calculation model is constructed according to the geological conditions of the blasting point; the initial blasting design scheme is brought into the blasting load tunnel surrounding rock damage calculation model, and the working face surrounding rock damage degree under each initial blasting design scheme is obtained.

[0034] In addition to the LS-DYNA software, the modeling software can also include ANSYS / LS-DYNA, FLAC3D, PFC, UDEC, 3DEC, etc. Key parameters can be input into the modeling software: rock physical and mechanical parameters (elastic modulus, Poisson's ratio, compressive strength, internal friction angle, etc.); blasting load curve (pressure change with time); drilling arrangement (slotting hole, auxiliary hole), charge distribution; initiation sequence and delay; free surface position, boundary conditions, etc. A suitable constitutive model (such as Mohr-Coulomb, Drucker-Prager, damage model, etc.) can be set to describe the rock failure behavior.

[0035] The parameters (such as charge, initiation sequence, advance, etc.) of each initial blasting design scheme are input into the above model for simulation calculation, and the damage range and degree of surrounding rock under blasting are obtained.

[0036] The simulation process comprises: Defining a pressure-time function of the shock wave generated by the explosive explosion; simulating the dynamic response of the shock wave propagating into the surrounding rock; recording indexes such as the maximum principal stress, plastic strain, crack development area, etc. in the surrounding rock; whether tensile failure or shear failure occurs; the size of the plastic failure zone (such as a depth of not more than 0.5 m is safe); the displacement of the surrounding rock, the crack density, the energy dissipation, etc.; output results: surrounding rock damage map (cloud display of the damage area); stress-strain curve of key points; quantitative indexes such as damage index or damage volume.

[0037] The damage degree of the working face surrounding rock can be determined according to the parameters obtained in the simulation process, and the damage index, the damage volume or the surrounding rock damage map can be selected as the damage degree of the working face surrounding rock.

[0038] Step S13, retaining the initial blasting design scheme whose working face surrounding rock damage degree is lower than the damage threshold.

[0039] The damage threshold can be set by relevant personnel according to their work experience, which is not limited here.

[0040] Step S14, determining the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme.

[0041] Determining the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme comprises:

[0042] Wherein, is the maximum vibration velocity, are both geological condition coefficients, is the explosive quantity of a single segment, is the distance from the observation point to the blasting source.

[0043] In addition to using the commonly used Sutherland formula or similar prediction model to predict the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building, the finite element method (FEM) or the discrete element method (DEM) can also be used.

[0044] For example, professional engineering software such as ANSYS, LS-DYNA, FLAC, etc. are used for numerical simulation, specific blasting parameters (such as explosive quantity, hole spacing, row spacing, initiation sequence, etc.), geological conditions (rock physical and mechanical properties) and boundary conditions are input, the stress wave propagation during blasting is simulated, and then the vibration velocity distribution at different positions is obtained.

[0045] Blasting simulation software (BlastMate, WBM) can be used to more accurately predict the blasting effect and the vibration influence range.

[0046] Step S15, according to the reserved initial blasting design scheme corresponding to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building, the optimal blasting design scheme is obtained from the reserved initial blasting design scheme.

[0047] The present application provides {way 1} and {way 2}, please refer to the following description: The working face blasting peak vibration velocity refers to the maximum instantaneous vibration velocity of the particle medium (such as rock or soil) at a monitoring point near the working face when subjected to the action of the blasting shock wave during the blasting process.

[0048] The maximum vibration velocity of the surface building refers to the maximum vibration velocity when the vibration wave caused by the blasting propagates to the foundation of the surface building or the sensitive area near it and is subjected to the action of the blasting shock wave.

[0049] {way 1} If the working face blasting peak vibration velocity of the reserved initial blasting design scheme is greater than the first vibration velocity threshold, or the maximum vibration velocity of the surface building is greater than the second vibration velocity threshold, the reserved initial blasting design scheme is rejected, and the reserved initial blasting design scheme is updated; In the updated reserved initial blasting design scheme, the initial blasting design scheme with the least slotting hole or the least functional hole charge amount is taken as the optimal blasting design scheme.

[0050] {way 1} is a blasting scheme optimization strategy oriented to safety and economy. The core idea is to first eliminate the vibration exceeding scheme to ensure that all reserved schemes meet the basic requirements of surrounding rock stability and surface building safety; then in the remaining schemes, the scheme with the least slotting hole or the least charge amount is selected as the optimal scheme. {way 1} has clear logic, simple operation, and is suitable for preliminary design stage or resource-limited engineering practice. {way 1} emphasizes safety first, while considering construction cost and efficiency, and is suitable for experienced technical personnel to make quick decisions.

[0051] {way 2} According to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the reserved initial blasting design scheme, the vibration velocity index of the reserved initial blasting design scheme is determined; For the initial blasting design scheme with the lowest vibration velocity index, if the working face blasting peak vibration velocity of the initial blasting design scheme is less than or equal to the first vibration velocity threshold, and the maximum vibration velocity of the surface building is less than or equal to the second vibration velocity threshold, the initial blasting design scheme with the lowest vibration velocity index is taken as the optimal blasting design scheme.

[0052] The vibration velocity index of the retained initial blasting design scheme is determined based on the peak vibration velocity of the working face and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme, including:

[0053] in, For the The vibration velocity index of the retained initial blasting design, weight, For the The peak vibration velocity of the working face blasting of the retained initial blasting design scheme, For the The maximum vibration velocity of the surface building for the retained initial blasting design scheme.

[0054] Method 2 introduces a comprehensive metric, the "vibration velocity index," to uniformly weight the peak vibration velocity of the working face blasting and the maximum vibration velocity of surface structures, achieving multi-objective optimization. Method 2 not only considers the safety threshold for vibration control but also flexibly reflects different engineering priorities (such as prioritizing surrounding rock protection or surface structure safety) through weighting coefficients, improving the scientific and adaptable nature of the scheme selection process. Compared to Method 1, Method 2 is more systematic and refined, making it suitable for optimizing blasting parameters in complex engineering environments. It is particularly well-suited for use in conjunction with numerical simulation and intelligent algorithms, enhancing the intelligence of blasting design and the precision of engineering control.

[0055] In summary, the present invention provides a parameter design method for controlling the size of shallow hole step blasting in hard rock caverns based on plum blossom-shaped horizontal hole arrangement, including: constructing several initial blasting design schemes, wherein each initial blasting design scheme includes at least a slot hole, a functional hole charge, a feed rate, a detonation section, and an inter-section delay; constructing a blasting load tunnel surrounding rock damage calculation model, and based on the blasting load tunnel surrounding rock damage calculation model, determining the degree of damage to the working face surrounding rock under each initial blasting design scheme; retaining the initial blasting design schemes in which the degree of damage to the working face surrounding rock is lower than the damage threshold; determining the peak vibration velocity of the working face blasting and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design schemes; and screening the optimal blasting design scheme from the retained initial blasting design schemes based on the peak vibration velocity of the working face blasting and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design schemes. The present invention optimizes the parameters of shallow hole step blasting in hard rock caverns through a systematic design method, thereby ensuring the safety and efficiency of construction. The present invention provides a variety of options for subsequent screening by constructing multiple initial blasting design schemes and setting key parameters such as the amount of explosives for slot holes and functional holes in detail. The present invention uses the blasting load tunnel surrounding rock damage calculation model to evaluate the degree of damage to the surrounding rock caused by each scheme, and only retains design schemes that meet safety standards. The present invention screens out the optimal scheme by accurately predicting and controlling the peak vibration velocity of the working face blasting and the maximum vibration velocity of the surface building. The present invention not only effectively reduces the impact of blasting on the surrounding rock and the surrounding environment, but also improves the consistency and predictability of the crushing effect, thereby improving construction efficiency and economy while ensuring project safety. It is particularly suitable for underground engineering construction under complex geological conditions. In addition, the present invention describes the following related contents: In view of the high rock strength, the interweaving of three rock masses with different lithologies and irregular contact surfaces in the site, and the complex rock structure, the original blasting plan adopted a rectangular hole layout for blasting. After blasting, the rate of large blocks was high, resulting in low shoveling efficiency and the need for secondary crushing, which greatly increased the blasting cost.

[0056] To address this issue and further develop a hole-layout optimization method suitable for rock masses with complex structural surfaces, local blasting models with rectangular and plum blossom-shaped hole layouts were established using HyperMesh software for rock masses with horizontal structural surfaces. Surrounding rock damage was calculated using the LS-DYNA platform, and the RHT constitutive model was used to describe dynamic rock damage. Damage was quantified using the damage variable D to characterize rock damage and crack propagation behavior. The differences in crack development and post-blasting fragmentation under different hole-layout configurations were explored, and the effects of the structural surface-blasting energy coupling mechanism and hole-layout method on fragmentation distribution were analyzed.

[0057] The numerical simulation result shows that stress waves of adjacent blast holes are superposed in phase during blasting, so that cracks mainly occur in the direction parallel or perpendicular to the blast hole connecting line after blasting in the rectangular blast hole arrangement mode, a small amount of long damage zones are formed, the central rectangular area surrounded by the blast holes in the rectangular blast hole arrangement mode is weak due to stress superposition effect, and there is almost no damage and crack, the overall energy utilization rate is low, but there is over-crushing phenomenon in the local area, so that the lump size distribution is uneven and polarized.

[0058] In the blast hole arrangement, the plum blossom blast hole arrangement mode is used, the plum blossom blast hole arrangement mode forces stress waves to be interwoven in different phases, multiple reflections and superpositions occur at the rock-structure surface, and blasting energy is redistributed at the interface, so that damage zones of adjacent blast holes are staggered and overlapped at the rock-structure surface interface, and a dense stress interference zone is formed.

[0059] Under the premise of ensuring that the vibration speed does not exceed the standard, based on the above principles and simulation results, the plum blossom blast hole arrangement is selected from the two blast hole arrangement modes as the blasting design scheme.

[0060] Part of the design parameters provided by the application are as follows: The blast hole depth is all set to 5m; the hole spacing is selected according to the blast hole type: after the blast hole function (auxiliary eye, peripheral eye, etc.) is divided into types, the initial hole spacing range is preselected based on rock mechanics test and experience of similar engineering cases, the excavation section size (length, width, curvature, joint fissure distribution, rock strength, etc.) data are collected, the numerical simulation technology is used to simulate the blasting stress field, the preselected different hole spacings are input, the rock breaking effect after blasting and the cave forming deviation are simulated, and finally it is found that when the auxiliary eye and the floor hole spacing is selected to be 130-140mm, better blasting effect can be obtained, and the specific value is selected according to the change of the cave width; in order to control the cave forming, the peripheral eye hole spacing is selected to be 56-60cm; the auxiliary eye row spacing is set to be 60-130cm, and the closer to the floor, the smaller the row spacing.

[0061] The blasting section and the delay time between sections are determined by comprehensively considering the rock properties, blasting vibration control and breaking effect and other factors. According to the Safety Regulations for Blasting, the maximum vibration speed allowable value of the peripheral adjacent building is determined.

[0062] Based on the same inventive concept, the application provides a parameter design device for hard rock cave shallow hole bench blasting lump size control based on plum blossom type horizontal blast hole, as shown in Figure 2 The parameter design device comprises: A scheme construction module 21 is used to construct a plurality of initial blasting design schemes, wherein each initial blasting design scheme at least comprises a cut hole, a functional hole charge, a footage, a blasting section position and a delay time between sections; The model construction module 22 is configured to construct a blasting load tunnel surrounding rock damage calculation model, and determine the working face surrounding rock damage degree under each initial blasting design scheme based on the blasting load tunnel surrounding rock damage calculation model. The damage screening module 23 is configured to retain the initial blasting design scheme whose working face surrounding rock damage degree is lower than the damage threshold value. The vibration velocity screening module 24 is configured to determine the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme. The optimal scheme module 25 is configured to screen the optimal blasting design scheme from the retained initial blasting design scheme according to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme.

[0063] Based on the same inventive concept, the present application further provides an electronic device, comprising: a processor; a memory for storing processor-executable instructions; The processor is configured to execute to implement the parameter design method for controlling the block size of the shallow hole bench blasting of the hard rock cavern based on the plum-blossom type horizontal hole arrangement as provided in the foregoing.

[0064] Based on the same inventive concept, the present application further provides a non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the electronic device, the electronic device can execute the parameter design method for controlling the block size of the shallow hole bench blasting of the hard rock cavern based on the plum-blossom type horizontal hole arrangement as provided in the foregoing.

[0065] Since the electronic device introduced in the embodiment is the electronic device used to implement the method for processing information in the embodiment of the present application, the specific implementation of the electronic device and its various forms can be understood by those skilled in the art based on the method for processing information introduced in the embodiment of the present application, so the method for processing information in the embodiment of the present application is not introduced in detail. As long as the electronic device used to implement the method for processing information in the embodiment of the present application is implemented by those skilled in the art, it belongs to the scope of the present application.

[0066] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can be in the form of a computer program product implemented on one or more computer usable storage media containing computer usable program code (including but not limited to disk storage, CD-ROM, optical storage, etc.).

[0067] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0068] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0069] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0070] While the preferred embodiments of the application have been described, additional variations and modifications can be employed by those skilled in the art. Therefore, the appended claims are intended to cover all such variations and modifications as falling within the scope of the application.

[0071] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A parameter design method for block size control of shallow hole bench blasting in hard rock caverns based on the horizontal multi-hole quadruplet, characterized in that, The application relates to a method for screening an optimal blasting design scheme from initial blasting design schemes. The method comprises the following steps: constructing a plurality of initial blasting design schemes, wherein each initial blasting design scheme comprises at least a cutting hole, a functional hole charge amount, a footage, a blasting section position and a section delay time; constructing a blasting load tunnel surrounding rock damage calculation model, and determining a working face surrounding rock damage degree under each initial blasting design scheme based on the blasting load tunnel surrounding rock damage calculation model; retaining an initial blasting design scheme whose working face surrounding rock damage degree is lower than a damage threshold value; determining a working face blasting peak vibration velocity and a maximum vibration velocity of a surface building corresponding to the retained initial blasting design scheme; 2. The parameter design method for block size control of the shallow hole bench blasting in the hard rock cavern based on the WOB pattern according to claim 1, characterized in that, screening an optimal blasting design scheme from the retained initial blasting design schemes according to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design schemes. The method for screening an optimal blasting design scheme from initial blasting design schemes according to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design schemes comprises the following steps: if the working face blasting peak vibration velocity of the retained initial blasting design scheme is greater than a first vibration velocity threshold value, or the maximum vibration velocity of the surface building is greater than a second vibration velocity threshold value, the retained initial blasting design scheme is removed, and the retained initial blasting design schemes are updated; 3. The parameter design method for controlling the fragmentation of shallow hole step blasting in hard rock caverns based on plum blossom-shaped horizontal hole arrangement according to claim 1 is characterized in that: in the updated retained initial blasting design schemes, an initial blasting design scheme with the least cutting hole setting or the least functional hole charge amount filling is taken as the optimal blasting design scheme. The method for screening an optimal blasting design scheme from initial blasting design schemes according to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design schemes further comprises the following steps: determining a vibration velocity index of the retained initial blasting design scheme according to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme; 4. The parameter design method for block size control of the shallow hole bench blasting in the hard rock cavern based on the WOB-type horizontal hole arrangement according to claim 1, characterized in that, if the working face blasting peak vibration velocity of the initial blasting design scheme with the lowest vibration velocity index is less than or equal to the first vibration velocity threshold value, and the maximum vibration velocity of the surface building is less than or equal to the second vibration velocity threshold value, the initial blasting design scheme with the lowest vibration velocity index is taken as the optimal blasting design scheme. wherein, is the vibration velocity index of the i-th reserved initial blasting design scheme, is the weight of the i-th reserved initial blasting design scheme, is the weight of the i-th reserved initial blasting design scheme, is the working face blasting peak vibration velocity of the i-th reserved initial blasting design scheme, is the working face blasting peak vibration velocity of the i-th reserved initial blasting design scheme, is the maximum vibration velocity of the surface building of the i-th reserved initial blasting design scheme, is the maximum vibration velocity of the surface building of the i-th reserved initial blasting design scheme.

5. The parameter design method for block size control of the flat-in shallow bench blasting in hard rock caverns based on the WOB pattern according to claim 1, characterized in that, The method for determining a vibration velocity index of a retained initial blasting design scheme according to a working face blasting peak vibration velocity and a maximum vibration velocity of a surface building corresponding to the retained initial blasting design scheme comprises the following steps: wherein, is the maximum vibration velocity, are geological condition coefficients, is the amount of functional hole explosives in a single section, is the distance from the observation point to the blasting source.

6. The parameter design method for block size control of the flat-in shallow bench blasting in hard rock caverns based on the WOB pattern according to claim 1, characterized in that, The method for determining a working face blasting peak vibration velocity and a maximum vibration velocity of a surface building corresponding to a retained initial blasting design scheme comprises the following steps: The method for constructing a blasting load tunnel surrounding rock damage calculation model and determining a working face surrounding rock damage degree under each initial blasting design scheme based on the blasting load tunnel surrounding rock damage calculation model comprises the following steps: determining a geological condition of a blasting point, wherein the geological condition at least comprises a rock type, a structure surface distribution and a rock physical property; constructing the blasting load tunnel surrounding rock damage calculation model according to the geological condition of the blasting point based on LS-DYNA software; bringing the initial blasting design scheme into the blasting load tunnel surrounding rock damage calculation model to obtain the working face surrounding rock damage degree under each initial blasting design scheme.

7. The parameter design method for block size control of the flat-in shallow bench blasting in hard rock caverns based on the WOB pattern according to claim 1, characterized in that, The initial blasting design scheme also includes: Hole depth, hole spacing, row spacing, charge structure and plugging length.

8. A parameter design device for block size control of a shallow hole bench blasting in a hard rock cavern based on a horizontal hole arrangement of a quincunx type, characterized by, Comprise: A scheme construction module for constructing a plurality of initial blasting design schemes, wherein each initial blasting design scheme at least includes a cut hole, a functional hole charge, a footage, a detonation section position and an inter-section delay; A model construction module for constructing a blasting load tunnel surrounding rock damage calculation model, and determining the working face surrounding rock damage degree under each initial blasting design scheme based on the blasting load tunnel surrounding rock damage calculation model; A damage screening module for retaining the initial blasting design scheme whose working face surrounding rock damage degree is lower than the damage threshold; A vibration velocity screening module for determining the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme; An optimal scheme module for screening the optimal blasting design scheme from the retained initial blasting design scheme according to the working face blasting peak vibration velocity and the maximum vibration velocity of the surface building corresponding to the retained initial blasting design scheme.

9. An electronic device, comprising: Comprise: A processor; A memory for storing the processor executable instructions; Wherein the processor is configured to execute to realize the parameter design method for controlling the block size of the horizontal hole blasting of the hard rock cavern based on the plum blossom type in claim 1 to 7.

10. A non-transitory computer-readable storage medium, comprising: When the instructions in the non-transitory computer readable storage medium are executed by the processor of the electronic device, the electronic device can execute the parameter design method for controlling the block size of the horizontal hole blasting of the hard rock cavern based on the plum blossom type in claim 1 to 7.

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