An Internet-based method for evaluating and analyzing blasting effects in tunnel mining projects

Abstract

The present invention belongs to the technical field of evaluation of blasting effects of tunnel mining projects, and discloses an Internet-based method for evaluating and analyzing blasting effects of tunnel mining projects. When evaluating and analyzing the blasting effects of tunnel mining projects, the present invention judges whether the blasting effects meet the expected requirements based on the safety effects of the target tunnel blasting process, the safety of the tunnel after blasting, and the compliance of the blasting quality effects. This analysis method not only considers the results after blasting, but also pays attention to the safety of the blasting process itself, ensuring the comprehensiveness of the evaluation, and being able to more comprehensively reflect the overall effect of the blasting. After judging whether the blasting effect meets the expected requirements, the present invention further identifies specific abnormal directions for situations that do not meet the expected requirements. This analysis method can more accurately determine the problem, reduce misjudgment of the nature of the problem, avoid taking ineffective remedial measures, and help to formulate more targeted solutions.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel mining engineering blasting effect evaluation, and relates to an Internet-based tunnel mining engineering blasting effect evaluation and analysis method. Background Art

[0002] Tunnel mining engineering is a series of activities involving tunnel design, construction and maintenance. It includes all stages from preliminary planning to final completion to ensure that the tunnel can be built safely and efficiently, which usually involves blasting. The evaluation of blasting effect in tunnel mining engineering plays an important role in ensuring construction safety and improving engineering quality and efficiency. The existing evaluation of blasting effect in tunnel mining engineering lacks accuracy, timeliness and comprehensiveness. Therefore, an Internet-based evaluation and analysis method for blasting effect in tunnel mining engineering is of great significance.

[0003] In the prior art, there are also related schemes involving the evaluation of tunnel blasting effects, for example, the invention patent application of the method and system for improving the evaluation of tunnel blasting effects with Chinese patent number CN118411616A, which performs a three-dimensional scan on the tunnel after blasting to obtain a number of tunnel over-break and under-break target points, and obtains tunnel structure section profile parameters, and obtains the relative position parameters between the tunnel over-break and under-break target points and the tunnel structure section profile based on the tunnel structure section profile parameters; constructs a position grid map corresponding to the tunnel over-break and under-break target points and the tunnel based on the relative position parameters; obtains the first blasting image of the tunnel after performing graph feature extraction and K-means algorithm clustering processing on the position grid map; evaluates the first blasting image of the tunnel to obtain an evaluation result corresponding to the blasting effect, and generates improvement measures based on the evaluation result.

[0004] Although the above scheme proposes some solutions to yarn quality, it still has certain limitations: on the one hand, the existing scheme usually focuses on the analysis of the quality effect and safety control effect after blasting, and ignores the analysis of the safety control effect during the blasting process. This analysis method may lead to the failure to timely discover and deal with safety hazards in the process, thereby affecting the accuracy and completeness of subsequent analysis. If problems arise during the blasting process and are not discovered and dealt with in time, the construction progress may be hindered and the safety risks faced by construction personnel may be increased.

[0005] On the other hand, the existing solutions ignore the further identification and analysis of the abnormal causes of abnormal situations. This analysis method may cause potential problems to be ignored. Without in-depth analysis of abnormal situations, targeted solutions may not be proposed, which may lead to the loss of opportunities to improve technology, affect construction efficiency and safety, and lead to additional repair costs and delay costs. Summary of the invention

[0006] In view of this, in order to solve the problems raised in the above background technology, a tunnel mining engineering blasting effect evaluation and analysis method based on the Internet is proposed.

[0007] The purpose of the present invention can be achieved through the following technical solutions: A method for evaluating and analyzing the blasting effect of tunnel mining projects based on the Internet, comprising: S1, tunnel data acquisition: using a mobile monitoring device to collect tunnel image data of the target tunnel after the blasting is completed to obtain the three-dimensional data of the target tunnel after the blasting.

[0008] S2. Safety analysis of blasting process: The safety of the blasting process of the target tunnel is detected by combining the 3D data of the target tunnel after blasting, and the safety data of the blasting process of the target tunnel is obtained, so as to analyze the safety of the blasting process of the target tunnel.

[0009] S3. Tunnel safety analysis after blasting: Conduct post-blasting safety detection on the target tunnel after blasting in combination with the post-blasting three-dimensional data of the target tunnel, obtain the post-blasting safety data of the target tunnel, and then analyze the safety situation of the target tunnel after blasting.

[0010] S4. Analysis on the compliance of blasting quality effect: Combined with the three-dimensional data of the target tunnel after blasting, the compliance of the target tunnel with the blasting quality effect is tested to obtain the compliance data of the target tunnel with the blasting quality effect after blasting, and then the compliance of the target tunnel with the blasting quality effect is analyzed.

[0011] S5. Analysis of blasting anomaly indicators: Based on the safety of the target tunnel during blasting, the safety of the tunnel after blasting, and the compliance of the blasting quality effect, determine whether the blasting effect meets the expected requirements. If not, identify the specific anomaly indicators, including safety anomalies in the blasting process, safety anomalies after blasting, and compliance of the blasting quality effect.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) When evaluating and analyzing the blasting effect of a tunnel mining project, the present invention determines whether the blasting effect meets the expected requirements based on the safety effect of the target tunnel blasting process, the tunnel safety after blasting, and the compliance of the blasting quality effect. This analysis method not only takes into account the results after blasting, but also pays attention to the safety of the blasting process itself, ensuring the comprehensiveness of the evaluation, being able to more comprehensively reflect the overall effect of the blasting, emphasizing safety control during the process, and helping to prevent potential safety hazards and reduce the risk of accidents.

[0013] (2) After determining whether the blasting effect meets the expected requirements, the present invention further identifies specific abnormal directions for situations that do not meet the expected requirements. This analysis method can more accurately determine the problem and reduce the misjudgment of the nature of the problem, thereby avoiding taking ineffective remedial measures, helping to formulate more targeted solutions, improving the efficiency of problem solving, and allocating resources more reasonably to avoid unnecessary waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the implementation steps of the method of the present invention.

[0016] Figure 2 This is a schematic diagram of crack length extraction according to the present invention.

[0017] Attached figure markings: 1--crack, 2--crack length, 3--blasting surface. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 As shown, the present invention provides an Internet-based tunnel mining project blasting effect evaluation and analysis method, the specific steps are as follows: S1, tunnel data acquisition: using a mobile monitoring device to collect tunnel image data of the target tunnel after the blasting is completed to obtain the three-dimensional data of the target tunnel after the blasting.

[0020] S2. Safety analysis of blasting process: The safety of the blasting process of the target tunnel is detected by combining the 3D data of the target tunnel after blasting, and the safety data of the blasting process of the target tunnel is obtained, so as to analyze the safety of the blasting process of the target tunnel.

[0021] As a preferred feasible embodiment, the blasting process safety data of the target tunnel is obtained including a flying rock discreteness index and a flying rock particle size index.

[0022] It is necessary to further explain the reasons for using the flying rock discreteness index and flying rock particle size index as the safety data of the blasting process of the target tunnel: 1. The flying rock discreteness index reflects the degree of discreteness of the flying rock distribution after blasting, that is, the distribution state of flying rocks in space. The flying rock discreteness index helps to assess the risks posed by flying rocks to the surrounding environment and personnel. Understanding the distribution characteristics of flying rocks helps to design effective protective measures, such as setting up protective barriers or changing blasting parameters to reduce the hazards of flying rocks. 2. The flying rock particle size index describes the size distribution of flying rock particles, that is, the proportion of flying rocks of different sizes. Flying rocks with larger particle sizes have higher kinetic energy and may cause greater damage to personnel and equipment. Therefore, understanding the particle size distribution of flying rocks helps to assess the potential degree of damage.

[0023] As a preferred feasible embodiment, the analysis of the safety of the blasting process of the target tunnel requires the construction of a blasting process safety index as follows: extract the fly rock discreteness index and fly rock particle size index during the blasting process of the target tunnel, denoted as DFdi and FPSi respectively, and use the formula The blasting process safety index BPi1 of the target tunnel is obtained by analysis, where DFdi0 represents the pre-set allowable flying rock discreteness index during the blasting process of the target tunnel, and FPSi0 represents the pre-set allowable flying rock particle size index during the blasting process of the target tunnel.

[0024] It is necessary to further explain that the allowable flying rock discreteness index is an indicator used to measure the discrete degree of flying rock distribution during blasting. This indicator is very important for evaluating the safety of the blasting process because it is directly related to the range of damage that flying rocks may cause to personnel and equipment. The setting of the allowable flying rock discreteness index usually depends on multiple factors, including the specific conditions of the blasting site, the sensitivity of the surrounding environment, construction safety standards, and the requirements of relevant laws and regulations.

[0025] It should be further explained that the allowable flying rock particle size index is an indicator used to measure the size distribution of flying rocks during blasting. This indicator is very important for evaluating the safety of the blasting process because it is directly related to the degree of damage that flying rocks may cause to personnel and equipment. The setting of the allowable flying rock particle size index usually depends on multiple factors, including the specific conditions of the blasting site, the sensitivity of the surrounding environment, construction safety standards, and the requirements of relevant laws and regulations.

[0026] As a preferred feasible embodiment, the specific analysis steps of the flying rock discreteness index are as follows: extracting the three-dimensional data of the target tunnel after blasting collected by a mobile monitoring device.

[0027] The image of the target tunnel after blasting is imported into three-dimensional data processing software and data analysis is performed to obtain the number of monitored flying rocks and the positions of each monitored flying rock in the image of the target tunnel after blasting.

[0028] It should be noted that the selection process of monitoring flying rocks is as follows: the volume of each flying rock in the image after blasting of the target tunnel is obtained, and the volume of each flying rock is compared with the preset recognition volume. If the volume of a flying rock is greater than or equal to the recognition volume, the flying rock is recorded as a monitoring flying rock.

[0029] For example, the recognition volume is 8 cm 3 .

[0030] It should be further added that the reason for setting the identification volume to screen the flying rocks is to ensure that all monitored flying rocks are those that may cause safety impacts on personnel and construction.

[0031] Connect each monitoring flying rock position with the preset blasting standard position point to obtain the monitoring connection line corresponding to each monitoring flying rock, obtain the length of the monitoring connection line corresponding to each monitoring flying rock, and record it as JL i , where i represents the monitored flying rocks number, i=1, 2...m, and m represents the number of monitored flying rocks.

[0032] It should be explained that the standard blasting position point refers to the center point of the pre-planned blasting surface.

[0033] Using the formula The flying rock discreteness index DFdi during the target tunnel blasting process is obtained, JL0 represents the pre-set flying rock splash distance threshold during the target tunnel blasting process, and e represents a natural constant.

[0034] It needs to be further explained that the pre-set flying rock splash distance threshold during the target tunnel blasting process refers to the farthest distance at which flying rocks may splash during the blasting process. The selection of this parameter usually needs to be combined with comprehensive consideration based on the size of the blasting surface and the specifications of the blasting project.

[0035] As a preferred feasible embodiment, the specific analysis steps of the flying rock particle size index are as follows: extracting the three-dimensional data of the target tunnel after blasting collected by a mobile monitoring device.

[0036] The target tunnel blasting image is imported into the 3D data processing software and data analysis is performed to obtain the number of monitored flying rocks and the volume of each monitored flying rock in the target tunnel blasting image. The volume of each monitored flying rock is recorded as JV i .

[0037] Using the formula The flying rock particle size index FPSi during the blasting process of the target tunnel is obtained by analysis, where JV0 represents the pre-set flying rock volume threshold during the blasting process of the target tunnel.

[0038] It is necessary to further explain that the pre-set flying rock volume threshold during the target tunnel blasting process refers to the situation in which the flying rock volume reaches a certain value during the blasting process and is considered to pose a safety threat to personnel, equipment or the surrounding environment. This threshold is an important indicator for evaluating the safety of the blasting process.

[0039] S3. Tunnel safety analysis after blasting: Conduct post-blasting safety detection on the target tunnel after blasting in combination with the post-blasting three-dimensional data of the target tunnel, obtain the post-blasting safety data of the target tunnel, and then analyze the safety situation of the target tunnel after blasting.

[0040] As a preferred feasible embodiment, the post-blasting safety data of the target tunnel includes crack data and spalling area data, wherein the crack data includes crack width, crack length and crack depth, and the spalling area data includes spalling area.

[0041] It is necessary to further explain the reasons for selecting cracks and spalling as the post-blasting safety data of the target tunnel: 1. Cracks refer to cracks generated in the tunnel lining or surrounding rock during the blasting process. Cracks will weaken the structural integrity of the lining or surrounding rock and affect the long-term stability and service life of the tunnel. Cracks will reduce the bearing capacity of the lining and reduce its ability to resist external loads. 2. Spalling refers to the shedding or peeling of the surface material of the tunnel lining after blasting. Spalling will reduce the effective cross-sectional area of ​​the lining and affect its structural stability. Spalling needs to be repaired in a timely manner, which increases maintenance costs and construction time.

[0042] As a preferred feasible embodiment, the analysis of the safety of the target tunnel after blasting requires the construction of a safety index after blasting. The specific analysis method is as follows: extract the crack width, crack length and crack depth of the target tunnel after blasting, record them as D, L and H respectively, and use the formula The analysis results in the target tunnel post-blasting crack safety index Crack, where D0 represents the preset target tunnel crack width threshold, L0 represents the preset target tunnel crack length threshold, and H0 represents the preset target tunnel crack depth threshold.

[0043] It needs to be further supplemented that the crack width, crack length and crack depth are specifically analyzed as follows: extract the three-dimensional data of the target tunnel after blasting collected by the mobile monitoring device, record the planned blasting surface as the target blasting surface, locate the crack position near the target blasting surface, and then obtain the crack width, crack length and crack depth corresponding to each crack position, and calculate the mean of the crack width, crack length and crack depth corresponding to each crack position to obtain the average crack width, average crack length and average crack depth, which are recorded as the crack width, crack length and crack depth after the blasting of the target tunnel.

[0044] For further information, please refer to Figure 2 As shown, the crack width refers to the maximum width of each crack, the crack length refers to the straight-line distance between the starting point and the end point of each crack, and the crack depth refers to the maximum depth of each crack.

[0045] Extract the spalling area S of the target tunnel after blasting, and use the formula The safety index of the spalling area after blasting of the target tunnel is obtained by analysis, where S0 represents the area of ​​the pre-defined effective spalling monitoring area.

[0046] It needs to be further explained that the area of ​​the pre-demarcated effective spalling monitoring area refers to the pre-set monitoring range in the tunnel blasting project in order to monitor the spalling phenomenon that may occur after the blasting. The size of this area is crucial to evaluating the blasting effect and ensuring the safety and stability of the tunnel structure. Specific determination methods: 1. Determine the size of the monitoring area based on the geological conditions of the stratum where the tunnel is located, such as rock type, degree of fissure development and other factors. 2. Consider the specific parameters of the blasting, such as charge, hole spacing, hole depth, etc., which will affect the stability of the tunnel lining after blasting.

[0047] Substitute the target tunnel crack safety index Crack after blasting and the target tunnel spalling area safety index Spall after blasting into the formula The safety index BPi2 of the target tunnel after blasting is obtained through analysis.

[0048] S4. Analysis on the compliance of blasting quality effect: Combined with the three-dimensional data of the target tunnel after blasting, the compliance of the target tunnel with the blasting quality effect is tested to obtain the compliance data of the target tunnel with the blasting quality effect after blasting, and then the compliance of the target tunnel with the blasting quality effect is analyzed.

[0049] As a preferred feasible embodiment, the post-blasting quality effect compliance data of the target tunnel includes the over-break area, the average depth of the over-break area, the under-break area and the average depth of the under-break area.

[0050] It should be explained that overbreak means that during the tunnel excavation process, the actual excavation volume exceeds the volume specified in the design drawings. This means that some rock is blasted or excavated extra. Underbreak means that during the tunnel excavation process, the actual excavation volume is less than the volume specified in the design drawings. This means that some of the rock within the design has not been excavated.

[0051] It is necessary to further explain the possible impacts of over-break and under-break: 1. Over-break will increase the cost of transporting and handling rocks. The extra workload may delay the construction schedule. Over-break may lead to insufficient thickness of tunnel lining, affecting the structural stability and safety of the tunnel. 2. Under-break may require secondary blasting or mechanical excavation, adding additional costs. The extra workload may delay the construction schedule. Under-break may lead to insufficient cross-sectional dimensions of the tunnel, affecting the structural stability and safety of the tunnel.

[0052] As a preferred feasible embodiment, the analysis of the compliance of the target tunnel blasting quality effect requires the construction of a blasting quality effect compliance index, and the specific analysis method is as follows: extract the over-break area, average depth of the over-break area, under-break area and average depth of the under-break area of ​​the target tunnel, which are respectively recorded as OBS, OBD, UBS and UBD, and use the formula The target tunnel blasting quality effect compliance index BPi3 is obtained, where BS0 represents the pre-set planned blasting area, and BD0 represents the pre-set planned blasting depth.

[0053] S5. Analysis of blasting anomaly indicators: Based on the safety of the target tunnel during blasting, the safety of the tunnel after blasting, and the compliance of the blasting quality effect, determine whether the blasting effect meets the expected requirements. If not, identify the specific anomaly indicators, including safety anomalies in the blasting process, safety anomalies after blasting, and compliance of the blasting quality effect.

[0054] As a preferred feasible embodiment, the determination of whether the blasting effect meets the expected requirements is specifically analyzed as follows: extracting the blasting process safety index BPi1 of the target tunnel, the post-blasting safety index BPi2 of the target tunnel and the blasting quality effect compliance index BPi3 of the target tunnel, and then analyzing to obtain the blasting effect compliance index of the target tunnel.

[0055] The blasting effect compliance index of the target tunnel is compared with a preset blasting effect compliance index threshold. If the blasting effect compliance index of the target tunnel is greater than or equal to the blasting effect compliance index threshold, it is judged that the blasting effect of the target tunnel meets the expected requirements. Otherwise, the blasting effect of the target tunnel does not meet the expected requirements.

[0056] Exemplarily, the blasting effect compliance index threshold is 0.85.

[0057] It should be further explained that the threshold of the blasting effect compliance index refers to the standard value used to evaluate whether the blasting effect meets the design requirements. This threshold is usually determined based on a series of blasting parameters and engineering objectives to ensure that the blasting operation is both efficient and safe. The compliance index threshold can be applied to many aspects, including but not limited to the control of over-break and under-break, the evaluation of the blasting effect index, etc.

[0058] It should be noted that when evaluating and analyzing the blasting effect of a tunnel mining project, the present invention determines whether the blasting effect meets the expected requirements based on the safety effect of the target tunnel blasting process, the safety of the tunnel after blasting, and the compliance of the blasting quality effect. This analysis method not only takes into account the results after blasting, but also pays attention to the safety of the blasting process itself, ensuring the comprehensiveness of the evaluation, and can more comprehensively reflect the overall effect of the blasting. It emphasizes safety control during the process, helps to prevent potential safety hazards, and reduces the risk of accidents.

[0059] As a preferred feasible embodiment, the analysis obtains the target tunnel blasting effect compliance index as follows: extract the target tunnel blasting process safety index BPi1, the target tunnel blasting safety index BPi2 and the target tunnel blasting quality effect compliance index BPi3, and use the formula The blasting effect compliance index BPi of the target tunnel is obtained by analysis, where α1, α2, and α3 represent the weight factors of the blasting process safety index of the target tunnel, the safety index of the target tunnel after blasting, and the blasting quality effect compliance index of the target tunnel, respectively.

[0060] It should be noted that the weight allocation of the target tunnel's blasting process safety index, target tunnel post-blasting safety index, and target tunnel blasting quality effect compliance index needs to comprehensively consider the specific conditions of the project, construction requirements, safety standards, and project management objectives. These weights reflect the relative importance of each index in the entire project and can be adjusted according to the characteristics and needs of the project.

[0061] It should be further explained that since safety is the foundation of any engineering project, the blasting process safety index is usually given a higher weight. For example, the weight can be set at 40%-50% to ensure that the safety of the blasting process is always given priority. The post-blasting safety index is equally important because it is directly related to the long-term safe operation of the tunnel. The weight can be set at 30%-40% to ensure that the safety of the tunnel structure is given full attention. The blasting quality effect compliance index reflects the quality of the blasting operation and is crucial to controlling costs and ensuring construction progress. The weight can be set at 20%-30% to ensure that the blasting effect meets the design requirements.

[0062] Exemplarily, α1=0.4, α2=0.3, α3=0.3.

[0063] As a preferred feasible embodiment, the identification of specific abnormalities is specifically as follows: extracting the blasting process safety index of the target tunnel, the post-blasting safety index of the target tunnel and the blasting quality effect compliance index of the target tunnel, and then comparing them with the pre-set blasting process safety index threshold, the target tunnel post-blasting safety index threshold and the target tunnel blasting quality effect compliance index threshold, respectively.

[0064] If the blasting process safety index of the target tunnel is less than the blasting process safety index threshold, the specific abnormality points to the blasting process safety abnormality.

[0065] If the post-blasting safety index of the target tunnel is less than the post-blasting safety index threshold, the specific abnormality points to a post-blasting safety abnormality.

[0066] If the blasting quality effect compliance index of the target tunnel is less than the blasting quality effect compliance index threshold, the specific abnormality points to the blasting quality effect compliance abnormality.

[0067] It should be further explained that the abnormal direction of the target tunnel may be one or more of abnormal safety during blasting, abnormal safety after blasting and abnormal compliance of blasting quality effect.

[0068] It should be noted that, after determining whether the blasting effect meets the expected requirements, the present invention further identifies specific abnormal directions for situations that do not meet the expected requirements. This analysis method can more accurately determine the problem, reduce misjudgment of the nature of the problem, thereby avoiding ineffective remedial measures, and help to formulate more targeted solutions, improve the efficiency of problem solving, and allocate resources more reasonably to avoid unnecessary waste.

[0069] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they shall all fall within the protection scope of the present invention.

Claims

1. A tunnel mining engineering blasting effect evaluation and analysis method based on the Internet, characterized in that: include: S1. Tunnel data acquisition: using a mobile monitoring device to acquire tunnel image data of the target tunnel after blasting to obtain three-dimensional data of the target tunnel after blasting; S2. Safety analysis of blasting process: combining the three-dimensional data of the target tunnel after blasting to detect the safety of the blasting process of the target tunnel, obtain the safety data of the blasting process of the target tunnel, and then analyze the safety of the blasting process of the target tunnel; To analyze the safety of the blasting process of the target tunnel, it is necessary to construct the blasting process safety index as follows: The fly rock discreteness index and fly rock particle size index during the target tunnel blasting process are extracted and recorded as , , using the formula The safety index of the blasting process of the target tunnel is obtained by analysis ,in It represents the allowable flying rock discreteness index during the blasting process of the preset target tunnel. It indicates the allowable flying rock particle size index during the blasting process of the preset target tunnel; S3. Post-blasting tunnel safety analysis: Perform post-blasting safety detection on the target tunnel after blasting in combination with the post-blasting three-dimensional data of the target tunnel, obtain the post-blasting safety data of the target tunnel, and then analyze the post-blasting safety situation of the target tunnel; To analyze the safety of the target tunnel after blasting, it is necessary to construct a post-blasting safety index, and the specific analysis method is as follows: The crack width, crack length and crack depth after blasting of the target tunnel are extracted and recorded as , , , using the formula The crack safety index of the target tunnel after blasting is obtained by analysis ,in represents the preset target tunnel crack width threshold, represents the preset target tunnel crack length threshold, represents the preset target tunnel crack depth threshold; Extract the spalling area of ​​the target tunnel after blasting , using the formula The safety index of the spalling area of ​​the target tunnel after blasting is obtained by analysis ,in It represents the area of ​​the pre-defined effective spalling monitoring area; The crack safety index of the target tunnel after blasting and safety index of spalling area after blasting of target tunnel Substitute into the formula The safety index of the target tunnel after blasting is obtained by analysis ; S4. Analysis of blasting quality effect compliance: Combine the 3D data of the target tunnel after blasting to conduct blasting quality effect compliance test on the target tunnel after blasting, obtain the post-blasting quality effect compliance data of the target tunnel, and then analyze the blasting quality effect compliance of the target tunnel; To analyze the compliance of the target tunnel blasting quality effect, it is necessary to construct a blasting quality effect compliance index. The specific analysis method is as follows: The over-break area, average over-break area depth, under-break area, and average under-break area depth of the target tunnel are extracted and recorded as , , , , using the formula Get the target tunnel blasting quality effect compliance index ,in Indicates the pre-set planned blasting area. Indicates the pre-set planned blasting depth; S5. Analysis of blasting anomaly indicators: Based on the safety of the target tunnel during blasting, the safety of the tunnel after blasting, and the compliance of the blasting quality effect, determine whether the blasting effect meets the expected requirements. If not, identify the specific anomaly indicators, including safety anomalies in the blasting process, safety anomalies after blasting, and compliance of the blasting quality effect.

2. The method for evaluating and analyzing the blasting effect of tunnel mining engineering based on the Internet as claimed in claim 1, characterized in that: The blasting process safety data of the target tunnel obtained includes a flying rock discreteness index and a flying rock particle size index; The post-blasting safety data of the target tunnel includes crack data and spalling area data, wherein the crack data includes crack width, crack length and crack depth, and the spalling area data includes the spalling area; The post-blasting quality effect compliance data of the target tunnel include the over-break area, the average depth of the over-break area, the under-break area and the average depth of the under-break area.

3. The method for evaluating and analyzing the blasting effect of tunnel mining engineering based on the Internet as claimed in claim 1, characterized in that: The specific analysis steps of the flying stone discreteness index are as follows: Extracting the three-dimensional data of the target tunnel after blasting collected by the mobile monitoring device; Import the target tunnel blasting image into the three-dimensional data processing software and perform data analysis to obtain the number of monitored flying rocks and the positions of each monitored flying rock in the target tunnel blasting image; Connect each monitoring flying rock position with the preset blasting standard position point to obtain the monitoring line corresponding to each monitoring flying rock, obtain the length of the monitoring line corresponding to each monitoring flying rock, and record it as ,in Indicates the monitoring flying rock number. , It means monitoring the number of flying rocks; Using the formula Obtain the fly rock dispersion index during the target tunnel blasting process , Indicates the pre-set rock splash distance threshold during the target tunnel blasting process. Represents a natural constant.

4. The method for evaluating and analyzing the blasting effect of tunnel mining engineering based on the Internet as claimed in claim 3, characterized in that: The specific analysis steps of the flying stone particle size index are as follows: Extracting the three-dimensional data of the target tunnel after blasting collected by the mobile monitoring device; The image of the target tunnel after blasting is imported into the three-dimensional data processing software and data analysis is performed to obtain the number of monitored flying rocks and the volume of each monitored flying rock in the image of the target tunnel after blasting. The volume of each monitored flying rock is recorded as ; Using the formula Analyze and obtain the flying rock particle size index during the target tunnel blasting process ,in It indicates the preset flying rock volume threshold during the blasting process of the target tunnel.

5. The method for evaluating and analyzing the blasting effect of tunnel mining engineering based on the Internet as claimed in claim 4, characterized in that: The specific analysis of judging whether the blasting effect meets the expected requirements is as follows: Extract the blasting process safety index of the target tunnel , Safety index of target tunnel after blasting and target tunnel blasting quality effect compliance index , and then analyze and obtain the blasting effect compliance index of the target tunnel; The blasting effect compliance index of the target tunnel is compared with a preset blasting effect compliance index threshold. If the blasting effect compliance index of the target tunnel is greater than or equal to the blasting effect compliance index threshold, it is judged that the blasting effect of the target tunnel meets the expected requirements. Otherwise, the blasting effect of the target tunnel does not meet the expected requirements.

6. The method for evaluating and analyzing the blasting effect of tunnel mining engineering based on the Internet as claimed in claim 5, characterized in that: The blasting effect compliance index of the target tunnel obtained by the analysis is as follows: Extract the blasting process safety index of the target tunnel , Safety index of target tunnel after blasting and target tunnel blasting quality effect compliance index , using the formula The blasting effect compliance index of the target tunnel is obtained by analysis ,in They respectively represent the weight factors of the target tunnel's blasting process safety index, the target tunnel's post-blasting safety index, and the target tunnel's blasting quality effect compliance index.

7. The method for evaluating and analyzing the blasting effect of tunnel mining engineering based on the Internet as claimed in claim 5, characterized in that: The specific abnormality points to be identified are as follows: Extract the blasting process safety index, the post-blasting safety index and the blasting quality effect compliance index of the target tunnel, and then compare them with the pre-set blasting process safety index threshold, the post-blasting safety index threshold and the blasting quality effect compliance index threshold respectively; If the blasting process safety index of the target tunnel is less than the blasting process safety index threshold, the specific abnormality is the blasting process safety abnormality; If the post-blasting safety index of the target tunnel is less than the post-blasting safety index threshold, the specific abnormality is post-blasting safety abnormality; If the blasting quality effect compliance index of the target tunnel is less than the blasting quality effect compliance index threshold, the specific abnormality points to the blasting quality effect compliance abnormality.

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