A mine blasting method based on high-temperature strata

Abstract

The present invention relates to the technical field of mine blasting, and particularly to a mine blasting method based on a high-temperature formation, including determining initial blasting parameters based on the geological exploration results of the mining area; determining whether the planned parameters for mine blasting meet the preset standards according to the vibration frequencies obtained by a plurality of vibration meters respectively arranged around the blasting area; determining whether to continue using the current blasting parameters to complete the blasting of the blasting area according to the variance of the amplitudes obtained by each vibration meter; determining whether the blasting state of the mine blasting meets the preset standards according to the number of vibration meters corresponding to the vibration frequencies greater than the second preset reference frequency; when the adjustment of the initial blasting parameters is completed, determining to use the adjusted parameters to complete the blasting of the blasting area, or when it is determined that the blasting state of the mine blasting meets the preset standards, determining to continue using the current blasting parameters to complete the blasting of the blasting area. The blasting efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of mine blasting, and in particular to a mine blasting method based on high-temperature strata. Background Art

[0002] With the rapid development of my country's social economy, the demand for coal is increasing day by day. How to mine coal safely and efficiently has become an important issue in the coal industry. As the main form of mining, open-pit coal mines have the advantages of safety and efficiency. The vibration caused by blasting has an important impact on the stability of buildings around the mining area and open-pit slopes, which can easily induce secondary disasters related to vibration, directly affecting the safety and efficiency of the mining process.

[0003] Existing vibration frequency control methods cannot achieve accurate vibration frequency control and have certain errors. The method of controlling vibration frequency may be limited by surrounding environmental conditions, such as geological conditions, climatic conditions, etc., which affects the control effect.

[0004] Chinese patent publication number: CN113312757A, discloses a method for intelligent three-dimensional step blasting design based on point cloud model blasting, comprising the following steps: step one; point cloud model blasting area selection, step two; arranging blastholes, step three; adjusting up and down slope lines, step four; setting the charge amount, step five; adding detonators, step six; simulating blasting, step seven; block size recognition design, through point cloud model blasting intelligent three-dimensional step blasting can be verified and tested before actual step blasting; it can be seen that the above technical solution has the following problems: it does not take into account the targeted adjustment of specific blasting parameters, which affects the efficiency of blasting. Summary of the invention

[0005] To this end, the present invention provides a mining blasting method based on high-temperature strata to overcome the problem in the prior art that targeted adjustment of specific blasting parameters is not considered, thus affecting the efficiency of blasting.

[0006] To achieve the above object, the present invention provides a mining blasting method based on high-temperature strata, comprising:

[0007] Determine initial blasting parameters based on geological exploration results for the mining area, the initial blasting parameters include initial charge, initial delay time, hole diameter, hole depth and hole spacing;

[0008] Determining whether the planned parameters for mining blasting meet preset standards based on the vibration frequencies obtained by a number of vibrometers respectively arranged around the blasting area;

[0009] When it is determined that the planned parameters for mining blasting meet the preset standards, it is determined whether to continue to use the current blasting parameters to complete the blasting of the blasting area according to the calculated variances of the amplitudes obtained by the vibration meters;

[0010] When it is determined that the planned parameters for mining blasting do not meet the preset standards, determining whether the blasting state of mining blasting meets the preset standards according to the number of corresponding vibration meters having vibration frequencies greater than the second preset reference frequency in each vibration frequency;

[0011] When the adjustment of the initial blasting parameters is completed, it is determined that the adjusted parameters are used to complete the blasting of the blasting area, or when it is determined that the blasting state of the mining blasting meets the preset standards, it is determined that the current blasting parameters are continuously used to complete the blasting of the blasting area.

[0012] Further, the vibration frequency and amplitude caused by the blasting are obtained by using a plurality of vibrometers installed on buildings or the ground around the blasting area;

[0013] The central control module determines whether the planning parameters for mining blasting meet the preset standards according to the maximum frequency of each vibration frequency obtained by each vibration meter and records it as a reference frequency, where:

[0014] The first blasting determination method is that the central control module determines that the planning parameters for mining blasting meet the preset standards, and determines whether to continue to use the current blasting parameters to complete the blasting of the blasting area according to the calculated variance of each amplitude obtained by each vibration meter; the first blasting determination method satisfies that the reference frequency is less than or equal to the first preset reference frequency;

[0015] The second blasting determination method is that the central control module preliminarily determines that the planning parameters for mining blasting do not meet the preset standards, and re-determines whether the planning parameters for mining blasting meet the preset standards according to each vibration frequency obtained by each vibration meter; the second blasting determination method satisfies that the reference frequency is less than or equal to the second preset reference frequency and greater than the first preset reference frequency, and the first preset reference frequency is less than the second preset reference frequency;

[0016] The third blasting determination method is that the central control module determines that the planning parameters for mining blasting do not meet the preset standards, and determines the processing method for the blasting area according to the number of corresponding vibration meters in each vibration frequency that is greater than the second preset reference frequency; the third blasting determination method satisfies that the reference frequency is greater than the second preset reference frequency.

[0017] Furthermore, the central control module calculates the vibration evaluation value for the blasting area under the second blasting determination mode, and sets Where n is the total number of vibration meters, i = 1, 2, 3, ..., n, ai is the maximum value of each vibration frequency obtained by the i-th vibration meter, P is the vibration evaluation value, and Fmax is the reference frequency of each vibration frequency obtained by each vibration meter;

[0018] The central control module determines whether the planning parameters for mining blasting meet the preset standards according to the vibration evaluation value, and the secondary blasting determination method is as follows:

[0019] The first blasting secondary determination method is that the central control module determines that the planning parameters for mining blasting do not meet the preset standards, and adjusts the initial delay time to a corresponding value according to the difference between the first preset vibration evaluation value and the vibration evaluation value; the first blasting secondary determination method satisfies that the vibration evaluation value is less than or equal to the first preset vibration evaluation value;

[0020] The second blasting secondary judgment method is that the central control module determines that the planning parameters for mining blasting meet the preset standards, and determines whether to continue using the current blasting parameters to complete the blasting of the blasting area based on the calculated variance of each amplitude obtained by each vibration meter; the second blasting secondary judgment method satisfies that the vibration evaluation value is greater than the second preset vibration evaluation value.

[0021] Further, when the central control module determines that the planning parameters for mining blasting meet the preset standards, the central control module calculates the variance of each amplitude obtained by each vibration meter, and the central control module determines whether the blasting state of mining blasting meets the preset standard according to the obtained variance. The mining determination method, wherein:

[0022] The first mining determination method is that the central control module determines that the blasting state of the mining blasting meets the preset standard, and determines to continue to use the current blasting parameters to complete the blasting of the blasting area; the first mining determination method satisfies that the variance is less than or equal to the preset variance;

[0023] The second mining determination method is that the central control module determines that the blasting state of the mining blasting does not meet the preset standard, and adjusts the initial delay time to a corresponding value according to the difference between the variance and the preset variance; the second mining determination method satisfies that the variance is greater than the preset variance.

[0024] Furthermore, in the third blasting determination mode, the central control module marks the corresponding vibration meters with a vibration frequency greater than the second preset reference frequency among the vibration frequencies obtained by the vibration meters as calibration meters, and the central control module determines the processing method for the blasting area according to the proportion of the number of calibration meters to the total number of vibration meters, wherein:

[0025] The first processing method is that the central control module adjusts the initial delay time to a corresponding value according to the difference between the preset quantity proportion and the quantity proportion; the first processing method satisfies that the quantity proportion is less than or equal to the preset quantity proportion;

[0026] The second processing method is that the central control module adjusts the initial charge amount to a corresponding value according to the difference between the reference frequency and the second preset reference frequency; the second processing method satisfies that the quantity proportion is greater than the preset quantity proportion.

[0027] Further, the central control module records the difference between the calculated first preset vibration evaluation value and the vibration evaluation value as the evaluation difference under the first blasting secondary determination mode, and the central control module determines the parameter adjustment mode for the initial delay time length according to the obtained evaluation difference, wherein:

[0028] The first parameter adjustment method is that the central control module uses the first preset parameter adjustment coefficient to adjust the initial delay time to a corresponding value; the first parameter adjustment method satisfies that the evaluation difference is less than or equal to the first preset evaluation difference;

[0029] The second parameter adjustment method is that the central control module uses the second preset parameter adjustment coefficient to adjust the initial delay time to the corresponding value; the second parameter adjustment method satisfies that the evaluation difference is less than or equal to the second preset evaluation difference and greater than the first preset evaluation difference, and the first preset evaluation difference is less than the second preset evaluation difference;

[0030] The third parameter adjustment method is that the central control module uses the third preset parameter adjustment coefficient to adjust the initial delay duration to a corresponding value; the third parameter adjustment method satisfies that the evaluation difference is greater than the second preset evaluation difference.

[0031] Further, the central control module records the difference between the calculated variance and the preset variance as the variance difference under the second mining determination mode, and the central control module determines the blasting adjustment mode for the initial delay time according to the obtained variance difference, wherein:

[0032] The first blasting adjustment mode is that the central control module uses the first preset blasting adjustment coefficient to adjust the initial delay time to a corresponding value; the first blasting adjustment mode satisfies that the variance difference is less than or equal to the first preset variance difference;

[0033] The second blasting adjustment mode is that the central control module uses the second preset blasting adjustment coefficient to adjust the initial delay time to the corresponding value; the second blasting adjustment mode satisfies that the variance difference is less than or equal to the second preset variance difference and greater than the first preset variance difference, and the first preset variance difference is less than the second preset variance difference;

[0034] The third blasting adjustment method is that the central control module uses the third preset blasting adjustment coefficient to adjust the initial delay time to a corresponding value; the third blasting adjustment method satisfies that the variance difference is greater than the second preset variance difference.

[0035] Further, the central control module records the difference between the preset quantity proportion and the quantity proportion as the quantity difference under the first processing mode, and the central control module determines the delay adjustment mode for the initial delay duration according to the obtained quantity difference, wherein:

[0036] The first delay adjustment method is that the central control module uses the first preset delay adjustment coefficient to adjust the initial delay duration to a corresponding value; the first delay adjustment method satisfies that the quantity difference is less than or equal to the first preset quantity difference;

[0037] The second delay adjustment method is that the central control module uses the second preset delay adjustment coefficient to adjust the initial delay duration to a corresponding value; the second delay adjustment method satisfies that the quantity difference is less than or equal to the second preset quantity difference and greater than the first preset quantity difference, and the first preset quantity difference is less than the second preset quantity difference;

[0038] The third delay adjustment method is that the central control module uses the third preset delay adjustment coefficient to adjust the initial delay duration to a corresponding value; the third delay adjustment method satisfies that the quantity difference is greater than the second preset quantity difference.

[0039] Furthermore, the central control module records the difference between the calculated reference frequency and the second preset reference frequency as the frequency difference under the second processing mode, and the central control module determines the dosage adjustment mode for the initial charge amount according to the obtained frequency difference, wherein:

[0040] The first drug dosage adjustment method is that the central control module uses the first preset drug dosage adjustment coefficient to adjust the initial drug loading amount to a corresponding value; the first drug dosage adjustment method satisfies that the frequency difference is less than or equal to the first preset frequency difference;

[0041] The second drug dosage adjustment method is that the central control module uses the second preset drug dosage adjustment coefficient to adjust the initial drug dosage to the corresponding value; the second drug dosage adjustment method satisfies that the frequency difference is less than or equal to the second preset frequency difference and greater than the first preset frequency difference, and the first preset frequency difference is less than the second preset frequency difference;

[0042] The third drug dosage adjustment method is that the central control module uses the third preset drug dosage adjustment coefficient to adjust the initial charge amount to a corresponding value; the third drug dosage adjustment method satisfies that the frequency difference is greater than the second preset frequency difference.

[0043] Furthermore, the central control module compares the adjusted initial delay time with the preset maximum time after completing the adjustment of the initial delay time. When the adjusted initial delay time is less than or equal to the preset maximum time, the central control module determines to use the adjusted initial delay time as the planning parameter for mining blasting; when the adjusted initial delay time is greater than the preset maximum time, the central control module determines to use the preset maximum time as the planning parameter for mining blasting, and uses the first preset charge adjustment coefficient to adjust the initial charge to the corresponding value.

[0044] Compared with the prior art, the beneficial effect of the present invention is that by controlling the vibration frequency, the impact of blasting on the surrounding environment can be reduced, such as reducing the vibration and damage to the surface, buildings and personnel, and reducing the generation of noise and dust. Reasonable control of the vibration frequency can reduce the probability of accidents during the blasting process and ensure the safety of workers and surrounding residents. By accurately controlling the vibration frequency, a more accurate blasting effect can be achieved, mining efficiency can be improved and resource waste can be reduced. Effective control of the vibration frequency can reduce damage to the surrounding environment and buildings, and reduce repair and maintenance costs. Controlling the vibration frequency can reduce the impact of the blasting process on the surrounding ecological environment.

[0045] Furthermore, the blasting parameters are specifically adjusted according to the specific blasting environment, which effectively improves the safety of mining blasting, the effect of blasting, and the efficiency of blasting. Determine whether to make targeted adjustments to the parameters of subsequent blasting based on the actual situation of blasting; determine the treatment method for the blasting area in a timely manner when there is an excessive blasting frequency around the blasting area; when it is impossible to determine whether the planning parameters meet the preset standards based on the reference frequency alone, the planning parameters of mining blasting meet the preset standards based on the vibration frequency obtained by each vibration meter. When the vibration evaluation value is less than or equal to the first preset vibration evaluation value, the maximum value of each corresponding frequency obtained by each vibration meter is generally large. In this case, because the maximum value of each corresponding frequency is less than or equal to the second preset reference frequency, only the initial delay time is increased. By using the detonation sequence of micro-difference detonation, the blasting effect is effectively improved while reducing the mutual interference of shock waves, thereby effectively reducing the vibration frequency of the surrounding area and effectively improving the efficiency of blasting.

[0046] Furthermore, when determining whether the propagation of the vibration frequency caused by the blasting remains within a safe range, determine whether the amplitude obtained by the vibration meter is uniform to further determine whether the blasting effect is uniform. When the variance is greater than the preset variance, the distribution of the amplitude is uneven and the impact force on the rock is uneven. In this case, reduce the initial delay time to increase the concentration of the blasting energy, effectively improving the efficiency of rock crushing.

[0047] Furthermore, when the reference frequency is greater than the second preset reference frequency, the corresponding processing method is determined in detail. When the quantity proportion is less than or equal to the preset quantity proportion, there are only a small number of calibration meters. In this case, the conversion frequency generated by the blasting only affects the surrounding area of ​​the blasting area in a small range. At this time, the initial delay time is increased and the concentration of the explosion energy is reduced to effectively reduce the vibration frequency and reduce the vibration impact on the surrounding environment and structures; the blasting parameters are adjusted according to the actual situation of the blasting environment, which effectively improves the safety of mining blasting. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a flowchart of the steps of a mining blasting method based on high-temperature strata according to an embodiment of the present invention;

[0049] Figure 2 This is a flow chart of a blasting determination method in which a central control module in an embodiment of the present invention determines whether planning parameters for mining blasting meet preset standards according to a reference frequency. DETAILED DESCRIPTION

[0050] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0052] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0053] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] See also Figure 1 and Figure 2 As shown, they are respectively a flowchart of a step of a mining blasting method based on a high temperature stratum according to an embodiment of the present invention, and a flowchart of a blasting determination method in which a central control module determines whether a planning parameter for mining blasting meets a preset standard according to a reference frequency; a mining blasting method based on a high temperature stratum according to an embodiment of the present invention comprises:

[0055] Specifically, the initial blasting parameters are determined based on the geological exploration results of the mining area, and the initial blasting parameters include initial charge amount, initial delay time, hole diameter, hole depth and hole spacing;

[0056] Determining whether the planned parameters for mining blasting meet preset standards based on the vibration frequencies obtained by a number of vibrometers respectively arranged around the blasting area;

[0057] When it is determined that the planned parameters for mining blasting meet the preset standards, it is determined whether to continue to use the current blasting parameters to complete the blasting of the blasting area according to the calculated variances of the amplitudes obtained by the vibration meters;

[0058] When it is determined that the planned parameters for mining blasting do not meet the preset standards, determining whether the blasting state of mining blasting meets the preset standards according to the number of corresponding vibration meters having vibration frequencies greater than the second preset reference frequency in each vibration frequency;

[0059] When the adjustment of the initial blasting parameters is completed, it is determined that the adjusted parameters are used to complete the blasting of the blasting area, or when it is determined that the blasting state of the mining blasting meets the preset standards, it is determined that the current blasting parameters are continuously used to complete the blasting of the blasting area.

[0060] Specifically, the vibration frequency and amplitude caused by the blasting are obtained by means of several vibrometers installed on buildings or the ground around the blasting area;

[0061] The central control module determines whether the planning parameters for mining blasting meet the preset standards according to the maximum frequency of each vibration frequency obtained by each vibration meter and records it as a reference frequency, where:

[0062] The first blasting determination method is that the central control module determines that the planning parameters for mining blasting meet the preset standards, and determines whether to continue to use the current blasting parameters to complete the blasting of the blasting area according to the calculated variance of each amplitude obtained by each vibration meter; the first blasting determination method satisfies that the reference frequency is less than or equal to the first preset reference frequency;

[0063] The second blasting determination method is that the central control module preliminarily determines that the planning parameters for mining blasting do not meet the preset standards, and re-determines whether the planning parameters for mining blasting meet the preset standards according to each vibration frequency obtained by each vibration meter; the second blasting determination method satisfies that the reference frequency is less than or equal to the second preset reference frequency and greater than the first preset reference frequency, and the first preset reference frequency is less than the second preset reference frequency;

[0064] The third blasting determination method is that the central control module determines that the planning parameters for mining blasting do not meet the preset standards, and determines the processing method for the blasting area according to the number of corresponding vibration meters in each vibration frequency that is greater than the second preset reference frequency; the third blasting determination method satisfies that the reference frequency is greater than the second preset reference frequency.

[0065] Specifically, the central control module calculates the vibration evaluation value for the blasting area under the second blasting determination mode, and sets Where n is the total number of vibration meters, i = 1, 2, 3, ..., n, ai is the maximum value of each vibration frequency obtained by the i-th vibration meter, P is the vibration evaluation value, and Fmax is the reference frequency of each vibration frequency obtained by each vibration meter;

[0066] The central control module determines whether the planning parameters for mining blasting meet the preset standards according to the vibration evaluation value, and the secondary blasting determination method is as follows:

[0067] The first blasting secondary determination method is that the central control module determines that the planning parameters for mining blasting do not meet the preset standards, and adjusts the initial delay time to a corresponding value according to the difference between the first preset vibration evaluation value and the vibration evaluation value; the first blasting secondary determination method satisfies that the vibration evaluation value is less than or equal to the first preset vibration evaluation value;

[0068] The second blasting secondary judgment method is that the central control module determines that the planning parameters for mining blasting meet the preset standards, and determines whether to continue using the current blasting parameters to complete the blasting of the blasting area based on the calculated variance of each amplitude obtained by each vibration meter; the second blasting secondary judgment method satisfies that the vibration evaluation value is greater than the second preset vibration evaluation value.

[0069] Determine whether to make targeted adjustments to the parameters of subsequent blasting based on the actual situation of the blasting; determine the treatment method for the blasting area in a timely manner when there is an excessive blasting frequency around the blasting area; when it is impossible to determine whether the planning parameters meet the preset standards based on the reference frequency alone, comprehensively judge whether the planning parameters of the mining blasting meet the preset standards based on the vibration frequencies obtained by each vibration meter, so that when the vibration evaluation value is less than or equal to the first preset vibration evaluation value, the maximum values ​​of the corresponding frequencies obtained by each vibration meter are generally large. In this case, because the maximum values ​​of the corresponding frequencies are less than or equal to the second preset reference frequency, only the initial delay duration is increased. By using the detonation sequence of micro-difference detonation, the blasting effect is effectively improved while reducing the mutual interference of shock waves, thereby effectively reducing the vibration frequency of the surrounding area and effectively improving the efficiency of blasting.

[0070] Specifically, when the central control module determines that the planning parameters for mining blasting meet the preset standards, the central control module calculates the variance of each amplitude obtained by each vibration meter, and determines whether the blasting state of mining blasting meets the preset standards according to the obtained variance. The mining determination method, wherein:

[0071] The first mining determination method is that the central control module determines that the blasting state of the mining blasting meets the preset standard, and determines to continue to use the current blasting parameters to complete the blasting of the blasting area; the first mining determination method satisfies that the variance is less than or equal to the preset variance;

[0072] The second mining determination method is that the central control module determines that the blasting state of the mining blasting does not meet the preset standard, and adjusts the initial delay time to a corresponding value according to the difference between the variance and the preset variance; the second mining determination method satisfies that the variance is greater than the preset variance.

[0073] After determining that the propagation of the vibration frequency caused by the blasting remains within a safe range, determine whether the amplitude obtained by the vibration meter is uniform to further determine whether the blasting effect is uniform. When the variance is greater than the preset variance, the distribution of the amplitude is uneven and the impact force on the rock is uneven. In this case, reduce the initial delay time to increase the concentration of the crushing energy, effectively improving the efficiency of rock crushing.

[0074] Specifically, in the third blasting determination mode, the central control module marks the corresponding vibration meter with a vibration frequency greater than the second preset reference frequency among the vibration frequencies obtained by the vibration meters as a calibration meter, and the central control module determines the processing method for the blasting area according to the proportion of the number of calibration meters to the total number of vibration meters, wherein:

[0075] The first processing method is that the central control module adjusts the initial delay time to a corresponding value according to the difference between the preset quantity proportion and the quantity proportion; the first processing method satisfies that the quantity proportion is less than or equal to the preset quantity proportion;

[0076] The second processing method is that the central control module adjusts the initial charge amount to a corresponding value according to the difference between the reference frequency and the second preset reference frequency; the second processing method satisfies that the quantity proportion is greater than the preset quantity proportion.

[0077] When the reference frequency is greater than the second preset reference frequency, the corresponding processing method is determined in detail. When the quantity proportion is less than or equal to the preset quantity proportion, there are only a small number of calibration meters. In this case, the conversion frequency generated by the blasting only affects the surrounding area of ​​the blasting area in a small range. At this time, the initial delay time is increased and the concentration of the explosion energy is reduced to effectively reduce the vibration frequency and reduce the vibration impact on the surrounding environment and structures; the blasting parameters are adjusted according to the actual situation of the blasting environment, which effectively improves the safety of mining blasting.

[0078] Specifically, the central control module records the difference between the calculated first preset vibration evaluation value and the vibration evaluation value as the evaluation difference under the first blasting secondary determination mode, and the central control module determines the parameter adjustment mode for the initial delay time length according to the obtained evaluation difference, wherein:

[0079] The first parameter adjustment method is that the central control module uses the first preset parameter adjustment coefficient to adjust the initial delay time to a corresponding value; the first parameter adjustment method satisfies that the evaluation difference is less than or equal to the first preset evaluation difference;

[0080] The second parameter adjustment method is that the central control module uses the second preset parameter adjustment coefficient to adjust the initial delay time to the corresponding value; the second parameter adjustment method satisfies that the evaluation difference is less than or equal to the second preset evaluation difference and greater than the first preset evaluation difference, and the first preset evaluation difference is less than the second preset evaluation difference;

[0081] The third parameter adjustment method is that the central control module uses the third preset parameter adjustment coefficient to adjust the initial delay duration to a corresponding value; the third parameter adjustment method satisfies that the evaluation difference is greater than the second preset evaluation difference.

[0082] Specifically, the central control module records the difference between the calculated variance and the preset variance as the variance difference under the second mining determination mode, and the central control module determines the blasting adjustment mode for the initial delay time according to the obtained variance difference, wherein:

[0083] The first blasting adjustment mode is that the central control module uses the first preset blasting adjustment coefficient to adjust the initial delay time to a corresponding value; the first blasting adjustment mode satisfies that the variance difference is less than or equal to the first preset variance difference;

[0084] The second blasting adjustment mode is that the central control module uses the second preset blasting adjustment coefficient to adjust the initial delay time to the corresponding value; the second blasting adjustment mode satisfies that the variance difference is less than or equal to the second preset variance difference and greater than the first preset variance difference, and the first preset variance difference is less than the second preset variance difference;

[0085] The third blasting adjustment method is that the central control module uses the third preset blasting adjustment coefficient to adjust the initial delay time to a corresponding value; the third blasting adjustment method satisfies that the variance difference is greater than the second preset variance difference.

[0086] Specifically, the central control module records the difference between the preset quantity proportion and the quantity proportion as the quantity difference under the first processing mode, and determines the delay adjustment mode for the initial delay duration according to the obtained quantity difference, wherein:

[0087] The first delay adjustment method is that the central control module uses the first preset delay adjustment coefficient to adjust the initial delay duration to a corresponding value; the first delay adjustment method satisfies that the quantity difference is less than or equal to the first preset quantity difference;

[0088] The second delay adjustment method is that the central control module uses the second preset delay adjustment coefficient to adjust the initial delay duration to a corresponding value; the second delay adjustment method satisfies that the quantity difference is less than or equal to the second preset quantity difference and greater than the first preset quantity difference, and the first preset quantity difference is less than the second preset quantity difference;

[0089] The third delay adjustment method is that the central control module uses the third preset delay adjustment coefficient to adjust the initial delay duration to a corresponding value; the third delay adjustment method satisfies that the quantity difference is greater than the second preset quantity difference.

[0090] Specifically, the central control module records the difference between the calculated reference frequency and the second preset reference frequency as the frequency difference under the second processing mode, and the central control module determines the amount adjustment mode for the initial charge amount according to the obtained frequency difference, wherein:

[0091] The first drug dosage adjustment method is that the central control module uses the first preset drug dosage adjustment coefficient to adjust the initial drug loading amount to a corresponding value; the first drug dosage adjustment method satisfies that the frequency difference is less than or equal to the first preset frequency difference;

[0092] The second drug dosage adjustment method is that the central control module uses the second preset drug dosage adjustment coefficient to adjust the initial drug dosage to the corresponding value; the second drug dosage adjustment method satisfies that the frequency difference is less than or equal to the second preset frequency difference and greater than the first preset frequency difference, and the first preset frequency difference is less than the second preset frequency difference;

[0093] The third drug dosage adjustment method is that the central control module uses the third preset drug dosage adjustment coefficient to adjust the initial charge amount to a corresponding value; the third drug dosage adjustment method satisfies that the frequency difference is greater than the second preset frequency difference.

[0094] Specifically, after completing the adjustment of the initial delay duration, the central control module compares the adjusted initial delay duration with the preset maximum duration. When the adjusted initial delay duration is less than or equal to the preset maximum duration, the central control module determines to use the adjusted initial delay duration as the planning parameter for mining blasting; when the adjusted initial delay duration is greater than the preset maximum duration, the central control module determines to use the preset maximum duration as the planning parameter for mining blasting, and uses the first preset charge adjustment coefficient to adjust the initial charge to the corresponding value.

[0095] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mining blasting method based on high-temperature strata, characterized in that: include: Determine initial blasting parameters based on geological exploration results for the mining area, the initial blasting parameters include initial charge, initial delay time, hole diameter, hole depth and hole spacing; Determining whether the planned parameters for mining blasting meet preset standards based on the vibration frequencies obtained by a number of vibrometers respectively arranged around the blasting area; When it is determined that the planned parameters for mining blasting meet the preset standards, it is determined whether to continue to use the current blasting parameters to complete the blasting of the blasting area according to the calculated variances of the amplitudes obtained by the vibration meters; When it is determined that the planned parameters for mining blasting do not meet the preset standards, determining whether the blasting state of mining blasting meets the preset standards according to the number of corresponding vibration meters having vibration frequencies greater than the second preset reference frequency in each vibration frequency; When the adjustment of the initial blasting parameters is completed, it is determined that the adjusted parameters are used to complete the blasting of the blasting area, or when it is determined that the blasting state of the mining blasting meets the preset standard, it is determined that the current blasting parameters are continuously used to complete the blasting of the blasting area; The vibration frequency and amplitude caused by blasting are obtained by installing several vibrometers on buildings or the ground around the blasting area; The central control module determines whether the planning parameters for mining blasting meet the preset standards according to the maximum frequency of each vibration frequency obtained by each vibration meter and records it as a reference frequency, where: The first blasting determination method is that the central control module determines that the planning parameters for mining blasting meet the preset standards, and determines whether to continue to use the current blasting parameters to complete the blasting of the blasting area according to the calculated variance of each amplitude obtained by each vibration meter; the first blasting determination method satisfies that the reference frequency is less than or equal to the first preset reference frequency; The second blasting determination method is that the central control module preliminarily determines that the planning parameters for mining blasting do not meet the preset standards, and re-determines whether the planning parameters for mining blasting meet the preset standards according to each vibration frequency obtained by each vibration meter; the second blasting determination method satisfies that the reference frequency is less than or equal to the second preset reference frequency and greater than the first preset reference frequency, and the first preset reference frequency is less than the second preset reference frequency; The third blasting determination method is that the central control module determines that the planning parameters for mining blasting do not meet the preset standards, and determines the processing method for the blasting area according to the number of corresponding vibration meters in each vibration frequency that is greater than the second preset reference frequency; the third blasting determination method satisfies that the reference frequency is greater than the second preset reference frequency.

2. The mining blasting method based on high temperature strata according to claim 1, characterized in that: The central control module calculates the vibration evaluation value for the blasting area under the second blasting determination mode, and sets Where n is the total number of vibration meters, i = 1, 2, 3, ..., n, ai is the maximum value of each vibration frequency obtained by the i-th vibration meter, P is the vibration evaluation value, and Fmax is the reference frequency of each vibration frequency obtained by each vibration meter; The central control module determines whether the planning parameters for mining blasting meet the preset standards according to the vibration evaluation value, and the secondary blasting determination method is as follows: The first blasting secondary determination method is that the central control module determines that the planning parameters for mining blasting do not meet the preset standards, and adjusts the initial delay time to a corresponding value according to the difference between the first preset vibration evaluation value and the vibration evaluation value; the first blasting secondary determination method satisfies that the vibration evaluation value is less than or equal to the first preset vibration evaluation value; The second blasting secondary judgment method is that the central control module determines that the planning parameters for mining blasting meet the preset standards, and determines whether to continue using the current blasting parameters to complete the blasting of the blasting area based on the calculated variance of each amplitude obtained by each vibration meter; the second blasting secondary judgment method satisfies that the vibration evaluation value is greater than the first preset vibration evaluation value.

3. The mining blasting method based on high temperature strata according to claim 2, characterized in that: When the central control module determines that the planning parameters for mining blasting meet the preset standards, the central control module calculates the variance of each amplitude obtained by each vibration meter, and determines whether the blasting state of mining blasting meets the preset standards according to the obtained variance. The mining determination method, wherein: The first mining determination method is that the central control module determines that the blasting state of the mining blasting meets the preset standard, and determines to continue to use the current blasting parameters to complete the blasting of the blasting area; the first mining determination method satisfies that the variance is less than or equal to the preset variance; The second mining determination method is that the central control module determines that the blasting state of the mining blasting does not meet the preset standard, and adjusts the initial delay time to a corresponding value according to the difference between the variance and the preset variance; the second mining determination method satisfies that the variance is greater than the preset variance.

4. The mining blasting method based on high temperature strata according to claim 3 is characterized in that: In the third blasting determination mode, the central control module marks the corresponding vibration meters with a vibration frequency greater than the second preset reference frequency among the vibration frequencies obtained by the vibration meters as calibration meters, and the central control module determines the processing method for the blasting area according to the proportion of the number of calibration meters to the total number of vibration meters, wherein: The first processing method is that the central control module adjusts the initial delay time to a corresponding value according to the difference between the preset quantity proportion and the quantity proportion; the first processing method satisfies that the quantity proportion is less than or equal to the preset quantity proportion; The second processing method is that the central control module adjusts the initial charge amount to a corresponding value according to the difference between the reference frequency and the second preset reference frequency; the second processing method satisfies that the quantity proportion is greater than the preset quantity proportion.

5. The mining blasting method based on high temperature strata according to claim 4, characterized in that: The central control module records the difference between the calculated first preset vibration evaluation value and the vibration evaluation value as the evaluation difference under the first blasting secondary determination mode, and determines the parameter adjustment mode for the initial delay time length according to the obtained evaluation difference, wherein: The first parameter adjustment method is that the central control module uses the first preset parameter adjustment coefficient to adjust the initial delay time to a corresponding value; the first parameter adjustment method satisfies that the evaluation difference is less than or equal to the first preset evaluation difference; The second parameter adjustment method is that the central control module uses the second preset parameter adjustment coefficient to adjust the initial delay time to the corresponding value; the second parameter adjustment method satisfies that the evaluation difference is less than or equal to the second preset evaluation difference and greater than the first preset evaluation difference, and the first preset evaluation difference is less than the second preset evaluation difference; The third parameter adjustment method is that the central control module uses the third preset parameter adjustment coefficient to adjust the initial delay duration to a corresponding value; the third parameter adjustment method satisfies that the evaluation difference is greater than the second preset evaluation difference.

6. The mining blasting method based on high temperature strata according to claim 5, characterized in that: The central control module records the difference between the calculated variance and the preset variance as the variance difference under the second mining determination mode, and determines the blasting adjustment mode for the initial delay time according to the obtained variance difference, wherein: The first blasting adjustment mode is that the central control module uses the first preset blasting adjustment coefficient to adjust the initial delay time to a corresponding value; the first blasting adjustment mode satisfies that the variance difference is less than or equal to the first preset variance difference; The second blasting adjustment mode is that the central control module uses the second preset blasting adjustment coefficient to adjust the initial delay time to the corresponding value; the second blasting adjustment mode satisfies that the variance difference is less than or equal to the second preset variance difference and greater than the first preset variance difference, and the first preset variance difference is less than the second preset variance difference; The third blasting adjustment method is that the central control module uses the third preset blasting adjustment coefficient to adjust the initial delay time to a corresponding value; the third blasting adjustment method satisfies that the variance difference is greater than the second preset variance difference.

7. The mining blasting method based on high temperature strata according to claim 6, characterized in that: The central control module records the difference between the preset quantity proportion and the quantity proportion as the quantity difference under the first processing mode, and determines the delay adjustment mode for the initial delay duration according to the obtained quantity difference, wherein: The first delay adjustment method is that the central control module uses the first preset delay adjustment coefficient to adjust the initial delay duration to a corresponding value; the first delay adjustment method satisfies that the quantity difference is less than or equal to the first preset quantity difference; The second delay adjustment method is that the central control module uses the second preset delay adjustment coefficient to adjust the initial delay duration to a corresponding value; the second delay adjustment method satisfies that the quantity difference is less than or equal to the second preset quantity difference and greater than the first preset quantity difference, and the first preset quantity difference is less than the second preset quantity difference; The third delay adjustment method is that the central control module uses the third preset delay adjustment coefficient to adjust the initial delay duration to a corresponding value; the third delay adjustment method satisfies that the quantity difference is greater than the second preset quantity difference.

8. The mining blasting method based on high temperature strata according to claim 7, characterized in that: The central control module records the difference between the calculated reference frequency and the second preset reference frequency as the frequency difference under the second processing mode, and determines the amount adjustment mode for the initial charge amount according to the obtained frequency difference, wherein: The first drug dosage adjustment method is that the central control module uses the first preset drug dosage adjustment coefficient to adjust the initial drug loading amount to a corresponding value; the first drug dosage adjustment method satisfies that the frequency difference is less than or equal to the first preset frequency difference; The second drug dosage adjustment method is that the central control module uses the second preset drug dosage adjustment coefficient to adjust the initial drug dosage to the corresponding value; the second drug dosage adjustment method satisfies that the frequency difference is less than or equal to the second preset frequency difference and greater than the first preset frequency difference, and the first preset frequency difference is less than the second preset frequency difference; The third drug dosage adjustment method is that the central control module uses the third preset drug dosage adjustment coefficient to adjust the initial charge amount to a corresponding value; the third drug dosage adjustment method satisfies that the frequency difference is greater than the second preset frequency difference.

9. The mining blasting method based on high temperature strata according to claim 8, characterized in that: The central control module compares the adjusted initial delay time with the preset maximum time after completing the adjustment of the initial delay time. When the adjusted initial delay time is less than or equal to the preset maximum time, the central control module determines to use the adjusted initial delay time as the planning parameter for mining blasting; when the adjusted initial delay time is greater than the preset maximum time, the central control module determines to use the preset maximum time as the planning parameter for mining blasting, and uses the first preset charge adjustment coefficient to adjust the initial charge to the corresponding value.

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