A method and device for controlling the amount of catalytic converter based on vibration velocity prediction of four-line tunnel lining with small clearance.

Abstract

This invention provides a method and apparatus for controlling the amount of explosives used in tunnel lining based on vibration velocity prediction using a four-line, small-clearance system. It relates to the field of tunnel blasting technology and includes: acquiring multiple tunnel models and vibration velocity data; drawing tangents to the outer edge of the second main tunnel structure based on the blast center point of the first main tunnel and the stress nodes of the third auxiliary tunnel, respectively, to obtain a second blast-facing tangent point and a second edge tangent point; calculating the effective propagation distance from the blast center point to each node for different scenarios involving the distance from the blast center point to the second blast-facing tangent point and the second edge tangent point, based on the straight line of the blast source; fitting attenuation coefficients and void coefficients using vibration velocity data and predicting their construction to obtain a vibration velocity prediction model; and back-calculating the safe explosive charge based on the vibration velocity prediction model and a safe vibration velocity threshold to obtain the controlled explosive charge. This invention solves the problems of safety and efficiency in tunnel construction.

Description

Technical Field

[0001] This invention relates to the field of tunnel blasting technology, and more specifically, to a method and apparatus for controlling the amount of explosives used in tunnel lining based on the prediction of vibration velocity in tunnels with small clearance between four lines. Background Technology

[0002] In existing tunnel blasting techniques, vibration velocity is generally predicted using the Sadovsky formula. However, the Sadovsky formula only applies to particles that can propagate linearly within the surrounding rock. For tunnels with small clearances, the accuracy of predicting vibration velocity on the back blast side of the preceding tunnel during subsequent tunnel blasting is low. Furthermore, this formula is no longer applicable in multi-track tunnel construction. In actual construction, the inaccurate prediction of blasting vibration velocity leads to uncontrollable impacts on the tunnel's initial support, secondary lining, and surrounding environment, resulting in issues with tunnel construction safety and efficiency.

[0003] Therefore, there is an urgent need for a method and device for controlling the amount of explosives used in tunnel lining based on the prediction of vibration velocity in four-line tunnels with small clearance, which solves the problems of safety and efficiency in tunnel construction. Summary of the Invention

[0004] The purpose of this invention is to provide a method and apparatus for controlling the amount of explosives used in tunnel lining based on the prediction of vibration velocity in tunnels with small clearance between four lines, in order to improve the aforementioned problems. To achieve the above objective, the technical solution adopted by this invention is as follows:

[0005] In the first aspect, this application provides a method for controlling the amount of explosives used in tunnel lining based on vibration velocity prediction for four-line tunnels with small clearance, including:

[0006] Multiple tunnel models and vibration velocity data are acquired. The multiple tunnel models include a first main tunnel, a second main tunnel, and a third auxiliary tunnel, with one end of the first main tunnel being the second main tunnel.

[0007] Based on the blast center point of the first main tunnel and the stress node of the third auxiliary tunnel, tangents are drawn to the outer edge of the structure of the second main tunnel to obtain the second blast-facing tangent point and the second edge tangent point;

[0008] Based on the line of the explosion source, the effective propagation distance between the explosion center and each node is calculated for different cases from the explosion center to the second blast-facing tangent point and the second edge tangent point;

[0009] Based on the effective propagation distance, the vibration velocity prediction model is obtained by fitting the attenuation coefficient and void coefficient using the vibration velocity data and predicting their construction.

[0010] Based on the vibration velocity prediction model and the safe vibration velocity threshold, the safe charge quantity is calculated by reverse calculation to obtain the blasting control charge quantity.

[0011] Secondly, this application also provides a charge control device based on the prediction of vibration velocity in a four-line tunnel lining with small clearance, characterized in that it includes:

[0012] The acquisition module is used to acquire multiple tunnel models and vibration velocity data. The multiple tunnel models include a first main tunnel, a second main tunnel, and a third auxiliary tunnel, with one end of the first main tunnel being the second main tunnel.

[0013] The first tangent module is used to draw tangents on the outer edge of the structure of the second main tunnel based on the blast center point of the first main tunnel and the stress node of the third auxiliary tunnel, respectively, to obtain the second blast-facing tangent point and the second edge tangent point;

[0014] The second tangent module is used to calculate the effective propagation distance between the blast center and each node based on the straight line of the blast source, for different cases from the blast center to the second blast-facing tangent point and the second edge tangent point respectively;

[0015] The calculation module is used to fit the attenuation coefficient and void coefficient based on the effective propagation distance and the vibration velocity data, and predict and construct a vibration velocity prediction model.

[0016] The prediction module is used to back-calculate the safe charge amount based on the vibration velocity prediction model and the safe vibration velocity threshold, so as to obtain the blasting control charge amount.

[0017] Thirdly, this application also provides a charge control device based on the prediction of vibration velocity in a four-line tunnel lining with small clearance, including:

[0018] Memory, used to store computer programs;

[0019] A processor is used to implement the steps of the dosage control method based on the prediction of vibration velocity of four-line small-clearance tunnel lining when executing the computer program.

[0020] Fourthly, this application also provides a medium on which a computer program is stored, which, when executed by a processor, implements the steps of the above-described method for controlling the dosage of mortar based on the prediction of vibration velocity in a four-line tunnel lining with small clearance.

[0021] The beneficial effects of this invention are as follows:

[0022] This invention accurately simulates the propagation behavior of actual vibration waves in complex tunnel structures by drawing tangents along the outer edge of the structure. Specifically, firstly, based on the geometric characteristics of the tunnel structure, multiple tangent points are obtained by drawing tangents along the outer edge of the structure. Then, the effective propagation distance from the blast center to the tangent points is calculated. By considering the spatial layout of multiple chambers and the accurate effective propagation distance, the vibration prediction results are closer to the actual monitoring data. Based on this, the attenuation coefficient and void coefficient are fitted and predicted using vibration velocity data, thus obtaining a vibration velocity prediction model. This avoids damage to surrounding structures and ensures the safety of the tunnel and surrounding facilities. Furthermore, the vibration velocity prediction model is used to assess the impact of blasting on the tunnel structure and the safe charge amount in advance, ensuring the safety and effectiveness of blasting operations. Ultimately, this invention can effectively avoid damage to the lining structure or safety risks caused by blasting. In summary, this invention solves the problems of safety and efficiency in tunnel construction. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the dosage control method for tunnel lining vibration velocity prediction based on four-line small clearance as described in an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the four-line small-clearance tunnel vibration velocity structure described in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the specific structure of the four-line small-clearance tunnel vibration velocity in an embodiment of the present invention;

[0027] Figure 4 In the vibration velocity fitting curve described in the embodiments of the present invention , , A schematic diagram;

[0028] Figure 5 In the vibration velocity fitting curve described in the embodiments of the present invention , , A schematic diagram;

[0029] Figure 6 In the vibration velocity fitting curve described in the embodiments of the present invention , , A schematic diagram;

[0030] Figure 7 In the vibration velocity fitting curve described in the embodiments of the present invention , , A schematic diagram;

[0031] Figure 8 This is a schematic diagram of the location of the cavity described in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the charge control device based on the prediction of vibration velocity of tunnel lining with four-line small clearance, as described in an embodiment of the present invention.

[0033] The markings in the diagram are: 800, Dosage control equipment based on vibration velocity prediction of four-line small-clearance tunnel lining; 801, Processor; 802, Memory; 803, Multimedia component; 804, I / O interface; 805, Communication component. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] This embodiment provides a method for controlling the amount of catalytic converter based on the prediction of vibration velocity in tunnel lining with a small clearance between four lines.

[0037] See Figures 1 to 3 The figure shows that the method includes steps S1 to S5, including:

[0038] S1: Acquire multiple tunnel models and vibration velocity data. The multiple tunnel models include a first main tunnel, a second main tunnel, and a third auxiliary tunnel. One end of the first main tunnel is the second main tunnel.

[0039] S2: Based on the blast center point of the first main tunnel and the stress node of the third auxiliary tunnel, tangents are drawn to the outer edge of the structure of the second main tunnel to obtain the second blast-facing tangent point and the second edge tangent point;

[0040] To clarify the specific methods for obtaining the second blast-facing tangent point and the second edge tangent point, step S2 includes S21 to S24, specifically:

[0041] S21: Based on the blast center point, tangents are drawn to the inner nodes of the top and bottom structures of the second main tunnel to obtain the second blast-facing tangent point, which includes the second blast-facing top tangent point and the second blast-facing bottom tangent point.

[0042] like Figure 2 As shown, the detonation point is O, the second detonation top tangent point is ZZA, and the second detonation bottom tangent point is ZZB.

[0043] S22: Draw a tangent line from the arch node of the third auxiliary tunnel to the outer node of the top structure of the second main tunnel to obtain the second top tangent point;

[0044] In this step, the arch node of the third auxiliary tunnel is ZFA, and the second apex tangent point is ZZC.

[0045] S23: Draw a tangent line from the side arch foot node of the third auxiliary tunnel to the bottom structure outer node of the second main tunnel to obtain the second bottom tangent point;

[0046] In this step, the side arch foot node of the third auxiliary tunnel is ZFD, and the second bottom tangent point is ZZD;

[0047] S24: Integrate the second top tangent point and the second bottom tangent point to obtain the second edge tangent point.

[0048] S3: Based on the line of the explosion source, calculate the effective propagation distance between the explosion center and each node for different cases from the explosion center to the second blast-facing tangent point and the second edge tangent point;

[0049] To clarify the specific method for obtaining the effective transmission distance, step S3 includes S31 to S34, specifically:

[0050] S31: Based on the straight line of the explosion source, the second propagation distance is calculated from the explosion center point to the second explosion-facing tangent point and the second edge tangent point respectively;

[0051] To clarify the specific method for obtaining the second propagation distance, step S31 includes S311 to S317, specifically:

[0052] S311: Based on the straight line of the explosion source, the top node from the explosion center point to the second tangent point of the explosion is taken as the first top distance;

[0053] In this step, the distance from the blast center point O to the blast-facing side of the second main tunnel to the second blast-facing top tangent point ZZA is taken as the first top distance R1.

[0054] S312: Based on the first top distance, the second top distance is obtained by combining the top distance of the top node of the second blast-facing tangent point extending to the second edge tangent point on the back blast side;

[0055] In this step, the distance from the second blast-facing tangent point ZZA to the back blast side of the second main tunnel extending to the second top tangent point ZZC is taken as the first arc length distance L1; the first top distance R1 and the first arc length distance L1 are combined to form the second top distance, which is R1+L1.

[0056] S313: Based on the second top distance, combined with the distance from the second edge tangent point to the back blast side extending to the preset second top back blast node, a third top distance is obtained;

[0057] In this step, the distance from the second top cutting point ZZC to the back blast side of the second main hole to the second top back blast node ZZE is the third arc length distance L3. The second top distance R1+L1 and the third arc length distance L3 are combined to form the third top distance, which is R1+L1+L3.

[0058] S314: The bottom node from the detonation point to the second detonation tangent point is taken as the fourth bottom distance;

[0059] In this step, the distance from the blast center point O to the blast-facing side of the second main tunnel, extending to the second blast-facing bottom tangent point ZZB, is taken as the fourth bottom distance R2.

[0060] S315: Based on the fourth bottom distance, combined with the distance from the bottom node of the second blast-facing tangent point to the bottom node of the second edge tangent point on the back blast side, the fifth bottom distance is obtained;

[0061] In this step, the distance from the second blast-facing bottom tangent point ZZB to the back blast side of the second main tunnel extending to the second bottom tangent point ZZD is taken as the second arc length distance L2. The fourth bottom distance R2 and the second arc length distance L2 are combined to form the fifth bottom distance, which is R2+L2.

[0062] S316: Based on the fourth bottom distance and the fifth bottom distance, and combined with the distance from the bottom node of the second edge tangent point to the back explosion side extending to the preset second bottom back explosion node, the sixth bottom distance is taken;

[0063] In this step, the distance from the second bottom tangent point ZZD to the back blast side of the second main hole, extending to the second bottom back blast node ZZF, is taken as the fourth arc length distance L4. The fifth bottom distance R2+L2 and the fourth arc length distance L4 are combined to form the sixth bottom distance, which is R2+L2+L4.

[0064] S317: The second propagation distance is obtained by integrating the first top distance, the second top distance, the third top distance, the fourth bottom distance, the fifth bottom distance, and the sixth bottom distance.

[0065] S32: The distance from the explosion center to the second edge tangent point is calculated with respect to the force-bearing node and the explosion-facing node of the third auxiliary tunnel to obtain the third explosion-facing propagation distance;

[0066] To clarify the specific method for obtaining the propagation distance of the third explosion, step S32 includes S321 to S325, specifically:

[0067] S321: Construct the distances from the blast center point to the second blast-facing tangent point, the second edge tangent point, and the arch node of the third auxiliary tunnel to obtain the seventh top blast-facing distance;

[0068] In this step, the distance from the second apex ZZC to the explosion-facing side of the third auxiliary tunnel, extending to the tunnel arch node ZFA of the third auxiliary tunnel, is taken as the arc length of the first auxiliary tunnel. R1, combined with the distance from the blast center O to the second main tunnel and the third auxiliary tunnel, extending sequentially to the second blast-facing tangent point ZZA, the second top tangent point ZZC, and the tunnel arch node ZFA of the third auxiliary tunnel, is taken as the seventh top blast-facing distance. The seventh top blast-facing distance is R1 + L1 + R1.

[0069] S322: Construct the distances from the blast center to the second blast-facing tangent point, the second edge tangent point, and the top blast-facing node of the third auxiliary tunnel to obtain the eighth blast-facing distance;

[0070] In this step, the distance from the second top back-blast node ZZE to the blast-facing side of the third auxiliary tunnel to the top blast-facing node ZFB of the third auxiliary tunnel is taken as the arc length of the second auxiliary tunnel. R2, combined with the distances from the blast center O to the second main tunnel and the third auxiliary tunnel, sequentially extending to the second blast-facing tangent point ZZA, the second top tangent point ZZC, the second top back blast node ZZE, and the top blast-facing node ZFB of the third auxiliary tunnel, is taken as the eighth blast-facing distance. The eighth blast-facing distance is R1 + L1 + L3 + R2.

[0071] S323: Construct the distances from the blast center to the second blast-facing tangent point, the second edge tangent point, and the bottom blast-facing node of the third auxiliary tunnel to obtain the ninth blast-facing distance;

[0072] In this step, the distance from the second bottom back-blast node ZZF to the blast-facing surface of the third auxiliary tunnel to the bottom blast-facing node ZFC of the third auxiliary tunnel is taken as the arc length of the third auxiliary tunnel. R3, combined with the distances from the blast center O to the second main tunnel and the third auxiliary tunnel, sequentially extending to the second blast-facing bottom tangent point ZZB, the second bottom tangent point ZZD, the second bottom back blast node ZZF, and the bottom blast-facing node ZFC of the third auxiliary tunnel, is taken as the ninth blast-facing distance. The ninth blast-facing distance is R2 + L2 + L4 + R3.

[0073] S324: Construct the distances from the blast center point to the second blast-facing tangent point, the second edge tangent point, and the side arch foot node of the third auxiliary tunnel to obtain the tenth bottom blast-facing distance;

[0074] In this step, the distance from the second bottom tangent point ZZD to the blast-facing side of the third auxiliary tunnel, extending to the side arch node ZFD of the third auxiliary tunnel, is taken as the arc length of the fourth auxiliary tunnel. R4, combined with the distance from the blast center O to the second main tunnel and the third auxiliary tunnel, extending sequentially to the second blast-facing bottom tangent point ZZB, the second bottom tangent point ZZD, and the side arch foot node ZFD of the third auxiliary tunnel, is taken as the tenth blast-facing distance. The tenth blast-facing distance is R2 + L2 + R4.

[0075] S325: The third blast propagation distance is obtained by integrating the seventh top blast distance, the eighth blast distance, the ninth blast distance, and the tenth bottom blast distance.

[0076] S33: Calculate the distance from the detonation center to the second detonation tangent point, the second edge tangent point, the stress node of the third auxiliary tunnel, and the back-detonation node of the third auxiliary tunnel to obtain the third back-detonation propagation distance;

[0077] To clarify the specific method for obtaining the propagation distance of the third backfire, step S33 includes S331 to S333, specifically:

[0078] S331: Construct the distances from the blast center point to the second blast-facing tangent point, the second edge tangent point, the arch node of the third auxiliary tunnel, and the third top back blast node of the third auxiliary tunnel to obtain the third back blast top distance;

[0079] In this step, the distance from the arch top node ZFA of the third auxiliary tunnel to the back blast side of the third auxiliary tunnel and to the third top back blast node ZFE of the third auxiliary tunnel is taken as the back blast arc length L5 of the first auxiliary tunnel. This distance, combined with the distance from the blast center O to the second main tunnel and the third auxiliary tunnel sequentially extending to the second blast-facing tangent point ZZA, the second top tangent point ZZC, the arch top node ZFA of the third auxiliary tunnel, and the third top back blast node ZFE, is taken as the third back blast top distance. The third back blast top distance is R1 + L1 + R1+L5.

[0080] S332: Construct the distances from the detonation point to the second blasting tangent point, the second edge tangent point, the side arch foot node of the third auxiliary tunnel, and the third bottom back blasting node of the third auxiliary tunnel to obtain the third back blasting bottom distance;

[0081] In this step, the distance from the side arch foot node ZFD of the third auxiliary tunnel to the back blast side of the third auxiliary tunnel and to the third bottom back blast node ZFF of the third auxiliary tunnel is taken as the back blast arc length L6 of the second auxiliary tunnel. The distance from the blast center point O to the second main tunnel and the third auxiliary tunnel, sequentially extending to the second blast bottom tangent point ZZB, the second bottom tangent point ZZD, the side arch foot node ZFD of the third auxiliary tunnel, and the third bottom back blast node ZFF, is taken as the third back blast bottom distance. The third back blast bottom distance is R2 + L2 + R4+L6.

[0082] S333: The third backblast propagation distance is obtained by integrating the distance from the top of the third backblast and the distance from the bottom of the third backblast.

[0083] S34: Select the shortest distance from the second propagation distance, the third frontal propagation distance, and the third backward propagation distance to obtain the effective propagation distance.

[0084] In this step, the effective propagation distance is The effective propagation distance is calculated using a differentiated method for different locations and arc segments of the tunnel, taking into account factors such as the blast center point, tangential direction, arc distance, and length of parallel line segments. This calculation method accurately reflects the propagation characteristics of blasting vibrations in complex tunnel structures, thereby improving prediction accuracy. It effectively solves the problem in existing technologies that typically use only a single straight-line blast center distance for prediction, neglecting the influence and defects of the tunnel's spatial structure.

[0085] S4: Based on the effective propagation distance, the vibration velocity data is fitted with the attenuation coefficient and void coefficient and predicted to construct a vibration velocity prediction model.

[0086] like Figures 4 to 8As shown, the attenuation coefficient and void coefficient are fitted based on the vibration velocity data and the charge amount in the blasting parameters. Based on the attenuation coefficient and the void coefficient, a prediction model is constructed to obtain the vibration velocity prediction model.

[0087] The expression for the vibration velocity prediction model is:

[0088] (1);

[0089] In the above formula (1), Peak vibration velocity, Coefficients related to geological conditions. The attenuation coefficient is related to geological conditions. The cavity effect coefficient is... For effective transmission distance, This refers to the amount of explosives loaded.

[0090] Among them, the coefficients related to geological conditions in the field measured data. The value is 143.3, which refers to the amount of explosive in the field-measured data. The weight was 18.9 kg. Subsequently, the field measurement data was fitted using Origin software to obtain the blast-facing and blast-back faces of the first main tunnel, second main tunnel, and third auxiliary tunnel at the effective propagation distance. and Value. Due to similar terrain conditions, The value did not change much; while The value exhibits a regular variation related to the location of the cavity: when no cavity is encountered, The value is 1; after encountering the first hole, The value rises to 1.18; subsequently, the voiding effect weakens with increasing distance. The value dropped to 1.06; then, upon encountering the second void, The value rose again to 1.21. Substituting the parameters obtained from the above fitting into equation (1), the specific peak velocity expression can be obtained:

[0091] ( );

[0092] ( );

[0093] ( );

[0094] ( );

[0095] S5: Based on the vibration velocity prediction model and the safe vibration velocity threshold, the safe charge quantity is calculated to obtain the blasting control charge quantity.

[0096] The vibration velocity prediction model described in this step predicts the vibration velocity at any point and uses the safety control vibration velocity to inversely calculate the control charge, thereby obtaining the vibration velocity control charge. This allows for an early assessment of the impact of blasting on the tunnel structure, ensuring the safety and effectiveness of blasting operations and avoiding structural damage or safety risks caused by blasting.

[0097] The expression for the vibration velocity-controlled dosage is:

[0098] (2);

[0099] In the above formula (2), To control the dosage of the drug by vibration velocity, For effective transmission distance, Coefficients related to geological conditions. The attenuation coefficient is related to geological conditions. The cavity effect coefficient is... The vibration velocity is allowed for safety.

[0100] The method for determining the cavity effect coefficient is as follows: for places that can be reached by straight-line propagation. For other points affected by the voiding effect, fitting is used to obtain... The value of is used to reflect the influence of the void effect on vibration velocity, quantify the interference of the tunnel cavity structure on vibration propagation, and solve the problem that traditional formulas do not consider the characteristics of tunnel cavities. Example 2:

[0101] This embodiment provides a charge control device based on vibration velocity prediction of four-line small-clearance tunnel lining, the device comprising:

[0102] The acquisition module is used to acquire multiple tunnel models and vibration velocity data. The multiple tunnel models include a first main tunnel, a second main tunnel, and a third auxiliary tunnel, with one end of the first main tunnel being the second main tunnel.

[0103] The first tangent module is used to draw tangents on the outer edge of the structure of the second main tunnel based on the blast center point of the first main tunnel and the stress node of the third auxiliary tunnel, respectively, to obtain the second blast-facing tangent point and the second edge tangent point;

[0104] The stress-bearing nodes include the arch top node and the side arch foot node.

[0105] To clarify the specific method for obtaining the first tangent module, the following are details:

[0106] The first tangent unit is used to draw tangents to the inner nodes of the top structure and the inner nodes of the bottom structure of the second main tunnel based on the blast center point, respectively, to obtain the second blast-facing tangent point, which includes the second blast-facing top tangent point and the second blast-facing bottom tangent point.

[0107] The second tangent unit is used to draw a tangent to the outer node of the top structure of the second main tunnel based on the arch node of the third auxiliary tunnel, so as to obtain the second top tangent point;

[0108] The third tangent unit is used to draw a tangent to the outer node of the bottom structure of the second main tunnel based on the side arch foot node of the third auxiliary tunnel, so as to obtain the second bottom tangent point;

[0109] An integration unit is used to integrate the second top tangent point and the second bottom tangent point to obtain the second edge tangent point.

[0110] The second tangent module is used to calculate the effective propagation distance between the blast center and each node based on the straight line of the blast source, for different cases from the blast center to the second blast-facing tangent point and the second edge tangent point respectively;

[0111] To clarify the specific method for obtaining the second tangent module, the following are details:

[0112] The first calculation unit is used to calculate the second propagation distance from the detonation center to the second detonation tangent point and the second edge tangent point based on the straight line of the detonation source;

[0113] The second calculation unit is used to calculate the distance from the explosion center to the second edge tangent point with the force-bearing node and the explosion-facing node of the third auxiliary tunnel, respectively, to obtain the third explosion-facing propagation distance;

[0114] The third calculation unit is used to calculate the distance from the detonation point to the second blast-facing tangent point, the second edge tangent point, the force-bearing node of the third auxiliary tunnel, and the back blast node of the third auxiliary tunnel, so as to obtain the third back blast propagation distance.

[0115] The selection unit is used to select the shortest distance among the second propagation distance, the third frontal propagation distance, and the third backward propagation distance to obtain the effective propagation distance.

[0116] The calculation module is used to fit the attenuation coefficient and void coefficient based on the effective propagation distance and the vibration velocity data, and predict and construct a vibration velocity prediction model.

[0117] The prediction module is used to back-calculate the safe charge amount based on the vibration velocity prediction model and the safe vibration velocity threshold, so as to obtain the blasting control charge amount.

[0118] It should be noted that the specific manner in which each module performs its operation in the apparatus described in the above embodiments has been described in detail in the embodiments of the method, and will not be elaborated here.

[0119] Example 3:

[0120] Corresponding to the above method embodiments, this embodiment also provides a charge control device based on the prediction of vibration velocity of four-line small-clearance tunnel lining. The charge control device based on the prediction of vibration velocity of four-line small-clearance tunnel lining described below can be referred to in correspondence with the charge control method based on the prediction of vibration velocity of four-line small-clearance tunnel lining described above.

[0121] Figure 9 A block diagram of a charge control device 800 based on vibration velocity prediction of a four-line small-clearance tunnel lining, shown according to an exemplary embodiment. Figure 9 As shown, the chemical dosage control device 800 based on the prediction of vibration velocity of four-line small-clearance tunnel lining may include: a processor 801 and a memory 802. The chemical dosage control device 800 based on the prediction of vibration velocity of four-line small-clearance tunnel lining may also include one or more of the following: a multimedia component 803, an I / O interface 804, and a communication component 805.

[0122] The processor 801 controls the overall operation of the dosage control device 800 based on the vibration velocity prediction of four-line small-clearance tunnel lining, to complete all or part of the steps in the above-mentioned dosage control method based on the vibration velocity prediction of four-line small-clearance tunnel lining. The memory 802 stores various types of data to support the operation of the dosage control device 800 based on the vibration velocity prediction of four-line small-clearance tunnel lining. This data may include, for example, instructions for any application or method operating on the dosage control device 800 based on the vibration velocity prediction of four-line small-clearance tunnel lining, as well as application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 802 can be implemented using any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The multimedia component 803 may include a screen and an audio component. The screen may be, for example, a touchscreen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in the memory 802 or transmitted via the communication component 805. The audio component also includes at least one speaker for outputting audio signals. I / O interface 804 provides an interface between processor 801 and other interface modules, such as keyboards, mice, and buttons. These buttons can be virtual or physical. Communication component 805 is used for wired or wireless communication between the dosage control device 800 based on four-line small-clearance tunnel lining vibration velocity prediction and other devices. Wireless communication includes Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, or 4G, or a combination thereof. Therefore, the corresponding communication component 805 may include a Wi-Fi module, a Bluetooth module, or an NFC module.

[0123] In an exemplary embodiment, the drug dosage control device 800 based on the vibration velocity prediction of a four-line small-clearance tunnel lining can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the aforementioned drug dosage control method based on the vibration velocity prediction of a four-line small-clearance tunnel lining.

[0124] Example 4:

[0125] Corresponding to the above method embodiments, this embodiment also provides a medium. The medium described below can be referred to in conjunction with the above-described method for controlling the dosage of catalytic converter based on the prediction of vibration velocity in a four-line tunnel lining with small clearance.

[0126] A medium storing a computer program, which, when executed by a processor, implements the steps of the dosage control method based on the prediction of vibration velocity in a four-line small-clearance tunnel lining as described in the above method embodiments.

[0127] The medium can specifically be any medium capable of storing program code, such as a USB flash drive, external hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0128] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0129] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for controlling the amount of explosives used in tunnel lining based on vibration velocity prediction with four-line small clearance, characterized in that, include: Multiple tunnel models and vibration velocity data are acquired. The multiple tunnel models include a first main tunnel, a second main tunnel, and a third auxiliary tunnel, with one end of the first main tunnel being the second main tunnel. Based on the blast center point of the first main tunnel and the stress nodes of the third auxiliary tunnel, tangents are drawn to the outer edge of the structure of the second main tunnel to obtain the second blast-facing tangent point and the second edge tangent point. The stress nodes include the tunnel arch top node and the side arch foot node. The specific methods for obtaining the second blast-facing tangent point and the second edge tangent point include: Based on the blast center point, tangents are drawn to the inner nodes of the top and bottom structures of the second main tunnel to obtain the second blast-facing tangent point, which includes the second blast-facing top tangent point and the second blast-facing bottom tangent point. Based on the arch node of the third auxiliary tunnel, a tangent line is drawn to the outer node of the top structure of the second main tunnel to obtain the second top tangent point; The second bottom tangent point is obtained by drawing a tangent line from the side arch foot node of the third auxiliary tunnel to the outer node of the bottom structure of the second main tunnel. The second top tangent point and the second bottom tangent point are integrated to obtain the second edge tangent point; Based on the line of the explosion source, the effective propagation distance between the explosion center and each node is calculated for different cases from the explosion center to the second blast-facing tangent point and the second edge tangent point; The specific methods for obtaining the effective propagation distance include: Based on the straight line of the explosion source, the second propagation distance is calculated from the explosion center point to the second explosion-facing tangent point and the second edge tangent point, respectively. The distance from the explosion center to the second edge tangent point is calculated with respect to the stress node and the explosion-facing node of the third auxiliary tunnel to obtain the third explosion-facing propagation distance; The propagation distance of the third back blast is obtained by calculating the distance from the blast center point to the second blast-facing tangent point, the second edge tangent point, the stress node of the third auxiliary tunnel, and the back blast node of the third auxiliary tunnel. The effective propagation distance is obtained by selecting the shortest distance from the second propagation distance, the third frontal propagation distance, and the third backward propagation distance; Based on the effective propagation distance, the vibration velocity prediction model is obtained by fitting the attenuation coefficient and void coefficient using the vibration velocity data and predicting their construction. The expression for the vibration velocity prediction model is as follows: ； In the above formula, Peak vibration velocity, Coefficients related to geological conditions. The attenuation coefficient is related to geological conditions. The cavity effect coefficient is... For effective transmission distance, This refers to the amount of explosives loaded. Based on the vibration velocity prediction model and the safe vibration velocity threshold, the safe charge quantity is calculated by reverse calculation to obtain the blasting control charge quantity.

2. The method for controlling the amount of explosives based on the prediction of vibration velocity in a four-line tunnel lining with small clearance, as described in claim 1, is characterized in that... Based on the straight line of the blast source, the second propagation distance is calculated from the blast center point to the second blast-facing tangent point and the second edge tangent point, respectively, including: Based on the straight line of the explosion source, the top node from the explosion center point to the second tangent point of the explosion is taken as the first top distance; Based on the first top distance, the second top distance is obtained by combining the top distance of the top node of the second blast-facing tangent point extending to the top of the second edge tangent point on the back blast side; Based on the second top distance, and combined with the distance from the second edge tangent point to the back blast side extending to the preset second top back blast node, the third top distance is taken as the distance. The bottom node from the detonation point to the second detonation tangent point is taken as the fourth bottom distance; Based on the fourth bottom distance, the fifth bottom distance is obtained by combining the distance from the bottom node of the second blast-facing tangent point to the bottom node of the second edge tangent point on the back blast side. Based on the fourth bottom distance and the fifth bottom distance, and combined with the distance from the bottom node of the second edge tangent point to the back blast side extending to the preset second bottom back blast node, the sixth bottom distance is taken; The second propagation distance is obtained by integrating the first top distance, the second top distance, the third top distance, the fourth bottom distance, the fifth bottom distance, and the sixth bottom distance.

3. The method for controlling the amount of explosives based on the prediction of vibration velocity in a four-line tunnel lining with small clearance, as described in claim 1, is characterized in that... The propagation distance of the third back blast is calculated by measuring the distance from the detonation center to the second blast-facing tangent point, the second edge tangent point, the stress node of the third auxiliary tunnel, and the back blast node of the third auxiliary tunnel, including: Distances are constructed from the blast center point to the second blast-facing tangent point, the second edge tangent point, the arch node of the third auxiliary tunnel, and the third top back blast node of the third auxiliary tunnel to obtain the third back blast top distance; The distances from the detonation point to the second blasting tangent point, the second edge tangent point, the side arch foot node of the third auxiliary tunnel, and the third bottom back blasting node of the third auxiliary tunnel are constructed to obtain the third back blasting bottom distance; The propagation distance of the third backblast is obtained by integrating the distance from the top of the third backblast and the distance from the bottom of the third backblast.

4. A charge control device based on vibration velocity prediction of four-line small-clearance tunnel lining, characterized in that, include: The acquisition module is used to acquire multiple tunnel models and vibration velocity data. The multiple tunnel models include a first main tunnel, a second main tunnel, and a third auxiliary tunnel, with one end of the first main tunnel being the second main tunnel. The first tangent module is used to draw tangents on the outer edge of the structure of the second main tunnel based on the blast center point of the first main tunnel and the stress nodes of the third auxiliary tunnel, respectively, to obtain the second blast-facing tangent point and the second edge tangent point. The stress nodes include the tunnel arch top node and the side arch foot node. The first tangent module includes: The first tangent unit is used to draw tangents to the inner nodes of the top structure and the inner nodes of the bottom structure of the second main tunnel based on the blast center point, respectively, to obtain the second blast-facing tangent point, which includes the second blast-facing top tangent point and the second blast-facing bottom tangent point. The second tangent unit is used to draw a tangent to the outer node of the top structure of the second main tunnel based on the arch node of the third auxiliary tunnel, so as to obtain the second top tangent point; The third tangent unit is used to draw a tangent to the outer node of the bottom structure of the second main tunnel based on the side arch foot node of the third auxiliary tunnel, so as to obtain the second bottom tangent point; An integration unit is used to integrate the second top tangent point and the second bottom tangent point to obtain the second edge tangent point; The second tangent module is used to calculate the effective propagation distance between the blast center and each node based on the straight line of the blast source, for different cases from the blast center to the second blast-facing tangent point and the second edge tangent point respectively; The second tangent module includes: The first calculation unit is used to calculate the second propagation distance from the detonation center to the second detonation tangent point and the second edge tangent point based on the straight line of the detonation source; The second calculation unit is used to calculate the distance from the explosion center to the second edge tangent point with the force-bearing node and the explosion-facing node of the third auxiliary tunnel, respectively, to obtain the third explosion-facing propagation distance; The third calculation unit is used to calculate the distance from the detonation point to the second blast-facing tangent point, the second edge tangent point, the force-bearing node of the third auxiliary tunnel, and the back blast node of the third auxiliary tunnel, so as to obtain the third back blast propagation distance. The selection unit is used to select the shortest distance among the second propagation distance, the third frontal propagation distance, and the third backward propagation distance to obtain the effective propagation distance; The calculation module is used to fit the attenuation coefficient and void coefficient based on the effective propagation distance and the vibration velocity data, and predict and construct a vibration velocity prediction model. The vibration velocity prediction model expression of the calculation module is as follows: ； In the above formula, Peak vibration velocity, Coefficients related to geological conditions. The attenuation coefficient is related to geological conditions. The cavity effect coefficient is... For effective transmission distance, This refers to the amount of explosives loaded. The prediction module is used to back-calculate the safe charge amount based on the vibration velocity prediction model and the safe vibration velocity threshold, so as to obtain the blasting control charge amount.

5. A charge control device based on vibration velocity prediction of four-line small-clearance tunnel lining, characterized in that, include: Memory, used to store computer programs; A processor, configured to execute the computer program to implement the steps of the dosage control method based on the prediction of vibration velocity of a four-line small-clearance tunnel lining as described in any one of claims 1 to 3.

6. A computer storage medium, characterized in that... The medium stores a computer program, which, when executed by a processor, implements the steps of the dosage control method for predicting the vibration velocity of a four-line small-clearance tunnel lining as described in any one of claims 1 to 3.

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