Method and system for predicting blasting vibration in surrounding rock of deep tunnel

Abstract

The invention provides a deep tunnel surrounding rock internal blasting vibration prediction method and system, and relates to the technical field of tunnel engineering blasting, and the method comprises the steps: horizontally drilling a plurality of test holes from a preceding tunnel to the interior of surrounding rock, and sequentially installing a blasting vibration sensor at the hole bottom of each test hole through a push-pull device; the following tunnel is blasted, and vibration data, collected by the vibration sensor, of the test hole are obtained; a first blasting vibration velocity prediction model in front of the tunnel face is obtained through fitting of the vibration data of the test hole in front of the tunnel face and the blasting center distance; calculating the actual explosion center distance of the test hole behind the tunnel face; and fitting the Sadgowski formula by using the actual blasting center distance and the vibration data of the test hole behind the tunnel face to obtain a second blasting vibration velocity prediction model behind the tunnel face. According to the invention, the push-pull device is adopted to solve the problem of monitoring the vibration in the surrounding rock of the deep tunnel and the problem of a propagation path of blasting stress waves in a complex environment; and the precision of the blast vibration prediction formula behind the tunnel face is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel blasting, and in particular to a method and system for predicting blasting vibration inside surrounding rock of a deep-buried tunnel. Background Art

[0002] Deep engineering projects are usually located in extremely complex engineering geological environments such as high ground stress and strong tectonic activities. These environmental factors make it very easy to induce disasters such as rock fracture, spalling, large deformation, and rock burst during the construction process. Especially in tunnels constructed by drilling and blasting, blasting disturbances will accelerate the occurrence of these disasters. Therefore, studying the principles of inducing various disasters under the action of blasting impact has become a current research hotspot. However, existing technologies have limitations in monitoring blasting stress waves. When blasting stress waves encounter air media, diffraction occurs, and the current surrounding rock surface testing methods cannot effectively solve this problem, and thus cannot control the propagation characteristics of blasting stress waves in complex geological environments. Summary of the invention

[0003] The purpose of the present invention is to provide a method, device, equipment and readable storage medium for predicting blasting vibration inside the surrounding rock of a deep tunnel to improve the above-mentioned problem. In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: In a first aspect, the present application provides a method for predicting blasting vibration inside surrounding rock of a deep tunnel, comprising: Drill multiple test holes horizontally from the pilot tunnel into the surrounding rock, install blasting vibration sensors at the bottom of each test hole in turn, and evenly distribute the multiple test holes in front and behind the tunnel face with the tunnel face as the symmetry plane; Blasting the subsequent tunnel to obtain vibration data of the test hole collected by the vibration sensor; The distance from the explosion center of the test hole in front of the tunnel face is obtained, and the Sadovsky formula is fitted using the vibration data of the test hole in front of the tunnel face and the distance from the explosion center to obtain the first blasting vibration velocity prediction model in front of the tunnel face; The blasting charge of the subsequent tunnel is obtained, and the vibration data and blasting charge of the test hole behind the tunnel face are substituted into the first blasting vibration velocity prediction model to calculate the actual explosion center distance from the explosion source to the test hole; The actual blast center distance and vibration data of the test hole behind the tunnel face are used to fit the Sadovsky formula to obtain a second blasting vibration velocity prediction model behind the tunnel face.

[0004] In a second aspect, the present application also provides a system for predicting blasting vibration inside surrounding rock of a deep tunnel, comprising: Arrangement module: Drill multiple test holes horizontally from the pilot tunnel to the surrounding rock, install blasting vibration sensors at the bottom of each test hole in turn, and evenly distribute the multiple test holes in front and behind the tunnel face with the tunnel face as the symmetry plane; Acquisition module: blasting the subsequent tunnel to acquire vibration data of the test hole collected by the vibration sensor; The first fitting module: obtains the explosion center distance of the test hole in front of the tunnel face, fits the Sadovsky formula using the vibration data of the test hole in front of the tunnel face and the explosion center distance, and obtains the first blasting vibration velocity prediction model in front of the tunnel face; The first calculation module: calculates the actual blasting center distance of the test hole behind the tunnel face according to the first blasting vibration velocity prediction model and the vibration data of the test hole behind the tunnel face; The second fitting module: the actual blast center distance and vibration data of the test hole behind the tunnel face are used to fit the Sadovsky formula to obtain a second blasting vibration velocity prediction model behind the tunnel face.

[0005] In a third aspect, the present application also provides a device for predicting blasting vibration inside the surrounding rock of a deep tunnel, comprising: Memory for storing computer programs; A processor is used to implement the steps of the method for predicting blasting vibration inside the surrounding rock of a deep tunnel when executing the computer program.

[0006] In a fourth aspect, the present application further provides a readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the above-mentioned method for predicting blasting vibration inside the surrounding rock of a deep tunnel are implemented.

[0007] The beneficial effects of the present invention are: 1. The present invention drills multiple test holes horizontally into the surrounding rock in the advance tunnel and installs the improved blasting vibration sensor at the bottom of the hole. The ingenious design of the blasting vibration sensor ensures its stability during the blasting process and the accuracy of data acquisition. The installation and fixing process is simple and fast, which reduces the construction cost and the workload of personnel, realizes all-round and high-precision monitoring of blasting vibration, can effectively capture the propagation characteristics of blasting stress waves in different directions, and provide accurate data support for vibration prediction.

[0008] 2. The present invention uses the vibration data of the test hole in front of the tunnel face and the blast center distance to obtain the first blasting vibration velocity prediction model, and further fits the second blasting vibration velocity prediction model based on the first blasting vibration velocity prediction model and the actual blast center distance at the rear calculated based on the data of the rear test hole. This model can more accurately predict the propagation of blasting vibration in the rear surrounding rock, providing an important reference for rear construction safety protection and blasting optimization design.

[0009] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or be understood by implementing the embodiments of the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 It is a schematic flow chart of a method for predicting blasting vibration inside surrounding rock of a deep buried tunnel according to an embodiment of the present invention; Figure 2 is a top view of a tunnel described in an embodiment of the present invention; Figure 3 is a cross-sectional view of a tunnel described in an embodiment of the present invention; Figure 4 is a cross-sectional view of the blasting vibration sensor described in an embodiment of the present invention; Figure 5 is a schematic diagram of a telescopic rod described in an embodiment of the present invention; Figure 6 is a schematic diagram of a push-pull rod described in an embodiment of the present invention; Figure 7 is a schematic diagram of the overall structure of the blasting vibration sensor described in an embodiment of the present invention; Figure 8 Schematic diagram of the structure of the traction rope described in the embodiment of the present invention; Fig. 9 It is a schematic diagram of the structure of the blasting vibration prediction system for the surrounding rock of a deep tunnel according to an embodiment of the present invention; Fig.10 It is a schematic diagram of the structure of the blasting vibration prediction device inside the surrounding rock of a deep tunnel described in an embodiment of the present invention.

[0012] Markings in the figure: 1. Sensor body; 2. Accommodating box; 21. Through hole; 3. Blocking layer; 4. Push-pull device; 41. Support rod; 411. First rod; 412. Second rod; 413. Third rod; 414. Fourth rod; 415. Fifth rod; 416. Sixth rod; 417. Fixed block; 42. Push-pull rod; 43. Spring; 44. Slider; 45. Button; 46. End handle; 461. Spring sheet; 47. Bayonet; 48. Rod cap; 49. Pulley block; 491. Fixed pulley; 492. Movable pulley; 493. Traction rope; 494. Hook; 495. Plastic hard tube; 800. Blasting vibration prediction device for deep tunnel surrounding rock. 801. Processor. 802. Memory. 803. Multimedia component. 804. I / O interface. 805. Communication component. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0014] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0015] Embodiment 1: This embodiment provides a method for predicting blasting vibration inside the surrounding rock of a deep tunnel.

[0016] See also Figure 1-Figure 3 , the figure shows that the method includes: S1. Drill multiple test holes horizontally from the pilot tunnel to the interior of the surrounding rock, install blasting vibration sensors at the bottom of each test hole in turn, and evenly distribute the multiple test holes in front and behind the tunnel face with the tunnel face as the symmetry plane; Specifically, the step S1 includes: S11. Determine the horizontal height of the test hole on the wall of the first tunnel , and determine the horizontal distance between two adjacent test holes; S12. Obtaining a drilling depth of the test hole, wherein the drilling depth includes a first depth and a second depth, and a plurality of test holes are drilled alternately according to the first depth and the second depth; S13. Drill at least 4 test holes in sequence along the front of the face according to the horizontal height, horizontal distance and depth. Figure 2 As shown in the figure, the test holes in front of the face are numbered 3#, 4#, 7#, and 8#, respectively. The drilling depths of the 3# and 4# test holes are the first depth. , the drilling depth of test holes 7# and 8# is the second depth .

[0017] S14. With the tunnel face as the symmetry plane, the same number of test holes are drilled symmetrically behind the tunnel face. As shown in the figure, the test holes in front of the tunnel face are numbered 1#, 2#, 5#, and 6#, respectively. The drilling depths of the 1# and 2# test holes are the first depth. , the drilling depth of 5# and 6# test holes is the second depth.

[0018] like Figure 4 As shown, in this embodiment, the blasting vibration sensor includes: A sensor body 1, wherein the sensor body 1 is located at the upper part of the blasting vibration sensor; In this embodiment, the sensor body 1 is an integrated instrument of a large-range blasting vibration sensor and an ISV-613A integrated intelligent vibration meter. The ISV-613A integrated intelligent vibration meter has a built-in small-range sensor acquisition system, which can measure vibration velocity under low disturbance response. The parameters of the ISV-613A integrated intelligent vibration meter are mainly: three-axis (X, Y, Z) vibration sensor, vibration velocity measurement range 0.008~33cm / s, frequency response 1~1KHz, working temperature -20~60℃.

[0019] The parameters of the integrated sensor body 1 are mainly: blasting vibration velocity test range 0.01~2500mm / s, sensitivity 2mv / mm / s, frequency response range 4-3KHZ, working temperature -20~80°, three-way (X, Y, Z) vibration sensor.

[0020] The sensor body 1 is equipped with program-controlled switching software, and the working mode is selected according to the on-site needs to work, which can take into account both low-disturbance vibration monitoring and vibration monitoring requirements caused by strong disturbances; The working modes mainly include the following two: 1) Strong disturbance mode, start the operation of a large range sensor; 2) Low disturbance mode, start the ISV-613A integrated intelligent vibration meter's built-in small-range sensor to work.

[0021] The two working modes can be switched by program-controlled switching software, which can take into account the vibration velocity measurement needs under different disturbances. Different modes can be selected according to on-site needs to conduct tests in different environments.

[0022] A containing box 2 is provided, wherein the containing box 2 is located at the lower part of the blasting vibration sensor, a blocking layer 3 is provided between the containing box 2 and the sensor body 1, and a plurality of through holes 21 are opened in the circumferential direction of the containing box 2; preferably, the blocking layer 3 is composed of foam and metal gaskets to prevent the push-pull device 4 from interfering with the sensor body 1.

[0023] The push-pull device 4 is located inside the containing box 2, the top of the push-pull device 4 is fixedly connected to the top surface inside the containing box 2, and the multiple support rods 41 of the push-pull device 4 extend outward along the multiple through holes 21 to contact the inner wall of the test hole, thereby fixing the blasting vibration sensor in the test hole.

[0024] Preferably, Figure 6 , Figure 7 As shown, the push-pull device 4 includes: A push-pull rod 42, wherein a spring 43 is arranged inside the push-pull rod 42 in a vertical direction, and a slider 44 is sleeved outside the push-pull rod 42 in a circumferential direction. The slider 44 slides along the radial direction of the push-pull rod 42. When the slider 44 is close to the end handle 46, the spring 43 is in a compressed state; a button 45 is arranged below the push-pull rod; An end handle 46, a side wall of the end handle 46 is provided with a bayonet 47, the end handle 46 is fixedly connected to the button 45 via the bayonet 47, and a spring sheet 461 is further provided inside the end handle 46; A rod cap 48, wherein the rod cap 48 is fixed to the top of the push-pull rod 42; A pulley block 49, the pulley block comprises a fixed pulley 491, a movable pulley 492 and a traction rope 493, the fixed pulley 491 is fixed on the rod cap 48, the movable pulley 492 is nested on the outer side of the push-pull rod and moves radially along the push-pull rod 42, one end of the traction rope 493 is connected to the fixed pulley 491 and the movable pulley 492 in sequence, and the other end radially passes through the interior of the spring 43 and is connected to a hook 494; Preferably, Figure 8As shown, the outer part of the traction rope 493 is covered with a plastic hard tube 495, the upper part of the plastic hard tube 495 contacts the bottom of the rod cap 48, and the lower part contacts the upper part of the hook 494, so as to ensure that the hook 494 connected to the traction rope 493 forms a buckle structure with the spring sheet 461. The length of the plastic hard tube 495 is designed according to the drilling depth of the test hole.

[0025] Preferably, Figure 5 As shown, the support rod 41 includes a first rod 411, a second rod 412, a third rod 413, a fourth rod 414, a fifth rod 415 and a sixth rod 416; One end of the first rod 411 is hinged to the rod cap 48, and the other end is hinged to the middle of the second rod 412; One end of the second rod 412 is hinged to one end of the third rod 413, and the other end is connected to one end of the fifth rod 415; The other end of the third rod 413 extends out of the through hole 21 of the accommodating box 2 and is connected to a fixing block 417; One end of the fourth rod 414 is connected to the slider 44, and the other end is hinged to the middle of the first rod 411; The other end of the fifth rod 415 is hinged to the middle of the fourth rod 414; One end of the sixth rod 416 is hinged to the end of the third rod 413, and the other end is hinged to the middle of the first rod 411; A spring is also connected between the end of the first rod 411 and the middle of the fourth rod 414; In this embodiment, the support rod 41 extends outward and pushes the fixing block 417 when the slider 44 is pushed upward, fixing the blasting vibration sensor in the test hole; when the support rod 41 contracts, the spring will use its contraction force to pull the first rod 411 to retract.

[0026] Based on the above embodiments, the method further includes: S2. Blasting the rear tunnel to obtain vibration data of the test hole collected by the vibration sensor; Based on the above embodiments, the method further includes: S3. Obtain the distance between the blast center of the test hole in front of the tunnel face, fit the Sadovsky formula using the vibration data of the test hole in front of the tunnel face and the distance between the blast center, and obtain the first blasting vibration velocity prediction model in front of the tunnel face; Specifically, the Sadovsky formula is: ; (1) Where: Indicates vibration speed; Indicates the coefficient related to the medium and blasting conditions; Indicates the amount of blasting charge; Indicates the distance from the center of explosion; represents the vibration attenuation coefficient; The blasting charge of the subsequent tunnel is obtained, and the vibration velocity, blasting center distance and blasting charge of the 3#, 4#, 7# and 8# test holes are used to fit the Sadovsky formula. and ,Will and Substituting into Sadovsky's formula, the prediction model of the first blasting velocity in front of the tunnel face is: ; (2) In the formula, , , They respectively represent the vibration velocity of the first blasting vibration velocity prediction model, the coefficient of the first blasting vibration velocity prediction model related to the medium and blasting condition factors, and the vibration attenuation coefficient of the first blasting vibration velocity prediction model.

[0027] Based on the above embodiments, the method further includes: S4. Obtain the blasting charge of the subsequent tunnel, substitute the vibration data and blasting charge of the test hole behind the tunnel face into the first blasting vibration velocity prediction model, and calculate the actual explosion center distance from the explosion source to the test hole; In this embodiment, the vibration velocity and blasting charge of the 1# and 2# test holes are respectively substituted into the first blasting vibration velocity prediction model to calculate the actual blasting center distance of the 1# test hole. The actual explosion center distance from the 2# test hole .

[0028] Based on the above embodiments, the method further includes: S5. Using the actual blast center distance and vibration data of the test hole behind the tunnel face to fit the Sadovsky formula, a second blasting vibration velocity prediction model behind the tunnel face is obtained; Specifically, step S5 includes: S51. Obtain the center coordinates of the test hole opening behind the face ; S52. According to the center coordinates of the hole and the drilling depth Inversion to obtain the center coordinates of the bottom of the test hole behind the tunnel face : ; (3) In the formula, Indicates The center coordinates of the bottom of the test hole behind the tunnel face can be obtained by inversion using the above formula. They represent the x-axis, y-axis and z-axis coordinates of the orifice respectively. They represent the x-axis, y-axis, and z-axis coordinates of the hole bottom respectively.

[0029] S53. Obtain the coordinates of the blast source on the face According to the coordinates of the explosion source, the center coordinates of the hole bottom and the actual explosion center distance, the propagation path of the stress wave to the bottom of the test hole behind the tunnel face is obtained by using the coordinate system inversion method; Specifically, the propagation path of the stress wave reaching the 1# test hole is calculated using the coordinate system inversion method as follows: ; (4) In the formula, It represents the x-axis coordinate, y-axis coordinate and z-axis coordinate of the surrounding rock of the side wall of the tunnel face section before the stress wave reaches the No. 1 test hole, that is, the inflection point coordinate. Indicates the distance between the explosion source and the inflection point. Indicates the distance between the inflection point and the 1# test hole. Indicates the x-axis coordinate, y-axis coordinate and z-axis coordinate of the explosion source; Use the total station to scan the cross-section contour coordinates on the right side of the tunnel face. Figure 3 As shown, the contour scanning coordinate points are summarized, and the contour scanning coordinate points are selected in turn as Substitute into formula (1) for matching calculation and get The value of Similarly, the propagation path of the stress wave reaching the 1# test hole is calculated using the coordinate system inversion method, and the coordinate point where the stress wave passes through the side wall surrounding rock of the tunnel face section before reaching the 2# test hole is obtained. , They respectively represent the x-axis coordinate, y-axis coordinate, and z-axis coordinate of the coordinate point where the stress wave passes through the surrounding rock on the side wall of the tunnel face section before reaching the 2# test hole.

[0030] S54. Fitting the Sadovsky formula based on the propagation path to obtain a second blasting vibration velocity prediction model behind the tunnel face; Specifically, the step S54 includes: S541. Obtain the coordinates of the turning points on the propagation path; Since the inflection point where the stress wave passes through the surrounding rock of the side wall of the tunnel face section is a fixed point, and There is an error, so the two are two different coordinate points. In this embodiment, the middle point between the two is taken as the inflection point where the stress wave passes through the side wall surrounding rock of the tunnel face section. Therefore, the inflection point coordinate on the propagation path is for: ; (5) In the formula, They respectively represent the x-axis coordinate, y-axis coordinate, and z-axis coordinate of the turning point on the propagation path.

[0031] S542. Calculate the actual explosion center distance of the 5# test hole according to the inflection point coordinates The actual explosion center distance from the 6# test hole ; ; (6) In the formula, represents the distance between the inflection point and the explosion center, Indicates the distance between the inflection point and the 5# test hole. The calculation method and The same is not described here.

[0032] S543. The propagation distance of stress waves in the surrounding rock, the vibration data of the test hole behind the tunnel face and the blasting charge are used to fit the Sadovsky formula to obtain a prediction model for the second blasting vibration velocity behind the tunnel face; In this embodiment, the propagation distance, vibration velocity and blasting charge of the 5# and 6# test holes are used to fit the Sadovsky formula to obtain the second blasting vibration velocity prediction model behind the tunnel face: ; (7) In the formula, , , They respectively represent the vibration velocity of the second blasting vibration velocity prediction model, the coefficient of the second blasting vibration velocity prediction model related to the medium and blasting condition factors, and the vibration attenuation coefficient of the second blasting vibration velocity prediction model.

[0033] It should be noted that this embodiment only takes two test holes as an example to fit the second blasting vibration velocity prediction model. In actual operation, the more test holes there are, the higher the accuracy of the fitted model.

[0034] Embodiment 2: like Fig. 9 As shown, this embodiment provides a system for predicting blasting vibration inside surrounding rock of a deep tunnel, the system comprising: Arrangement module: Drill multiple test holes horizontally from the pilot tunnel to the surrounding rock, install blasting vibration sensors at the bottom of each test hole in turn, and evenly distribute the multiple test holes in front and behind the tunnel face with the tunnel face as the symmetry plane; Acquisition module: blasting the subsequent tunnel to acquire vibration data of the test hole collected by the vibration sensor; The first fitting module: obtains the explosion center distance of the test hole in front of the tunnel face, fits the Sadovsky formula using the vibration data of the test hole in front of the tunnel face and the explosion center distance, and obtains the first blasting vibration velocity prediction model in front of the tunnel face; The first calculation module: obtains the blasting charge of the rear tunnel, substitutes the vibration data and blasting charge of the test hole behind the tunnel face into the first blasting vibration velocity prediction model, and calculates the actual explosion center distance from the explosion source to the test hole; The second fitting module: the actual blast center distance and vibration data of the test hole behind the tunnel face are used to fit the Sadovsky formula to obtain a second blasting vibration velocity prediction model behind the tunnel face.

[0035] Based on the above embodiment, the arrangement module includes: The first determination unit: determines the horizontal height of the test hole drilled on the preceding tunnel wall, and determines the horizontal distance between two adjacent test holes; A first acquisition unit is used to acquire a drilling depth of a test hole, where the drilling depth includes a first depth and a second depth, and a plurality of test holes are drilled alternately according to the first depth and the second depth; The first arrangement unit: drilling at least four test holes in sequence along the front of the tunnel face according to the horizontal height, horizontal distance and depth; The second arrangement unit: taking the tunnel face as the symmetry plane, the same number of test holes are drilled symmetrically behind the tunnel face.

[0036] Based on the above embodiment, the second fitting module includes: The third acquisition unit is used to acquire the center coordinates of the test hole opening behind the tunnel face; The first inversion unit: the center coordinates of the bottom of the test hole behind the tunnel face are obtained by inversion based on the center coordinates of the hole mouth and the drilling depth; The second inversion unit: obtains the coordinates of the explosion source on the tunnel face, and uses the coordinate system inversion method to obtain the propagation path of the stress wave to the bottom of the test hole behind the tunnel face based on the coordinates of the explosion source, the center coordinates of the hole bottom, and the actual explosion center distance; Fitting unit: Fitting the Sadovsky formula based on the propagation path to obtain a second blasting vibration velocity prediction model behind the tunnel face.

[0037] It should be noted that, regarding the device in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the method, and will not be elaborated here.

[0038] Embodiment 3: Corresponding to the above method embodiment, this embodiment also provides a deep tunnel surrounding rock internal blasting vibration prediction device, and the deep tunnel surrounding rock internal blasting vibration prediction device described below and the deep tunnel surrounding rock internal blasting vibration prediction method described above can refer to each other.

[0039] Fig.10FIG. 8 is a block diagram of a device 800 for predicting blasting vibration inside surrounding rock of a deep tunnel according to an exemplary embodiment. Fig.10 As shown, the deep tunnel surrounding rock internal blasting vibration prediction device 800 may include: a processor 801 and a memory 802. The deep tunnel surrounding rock internal blasting vibration prediction device 800 may also include one or more of a multimedia component 803, an I / O interface 804, and a communication component 805.

[0040] The processor 801 is used to control the overall operation of the deep tunnel surrounding rock internal blasting vibration prediction device 800 to complete all or part of the steps in the above-mentioned deep tunnel surrounding rock internal blasting vibration prediction method. The memory 802 is used to store various types of data to support the operation of the deep tunnel surrounding rock internal blasting vibration prediction device 800, and these data may include, for example, instructions for any application or method operating on the deep tunnel surrounding rock internal blasting vibration prediction device 800, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 802 can be implemented by 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 memory, flash memory, disk or optical disk. The multimedia component 803 may include a screen and an audio component. The screen may be, for example, a touch screen, 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 signal may be further stored in the memory 802 or sent via the communication component 805. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 804 provides an interface between the processor 801 and other interface modules, and the above-mentioned other interface modules can be keyboards, mice, buttons, etc. These buttons can be virtual buttons or physical buttons. The communication component 805 is used for wired or wireless communication between the deep-buried tunnel surrounding rock internal blasting vibration prediction device 800 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so the corresponding communication component 805 can include: Wi-Fi module, Bluetooth module, NFC module.

[0041] In an exemplary embodiment, the deep-buried tunnel surrounding rock internal blasting vibration prediction device 800 can be implemented by one or more application specific integrated circuits (Application Specific Integrated Circuit, referred to as ASIC), digital signal processors (Digital Signal Processing Device, referred to as DSP), digital signal processing devices (Digital Signal Processing Device, referred to as DSPD), programmable logic devices (Programmable Logic Device, referred to as PLD), field programmable gate arrays (Field Programmable Gate Array, referred to as FPGA), controllers, microcontrollers, microprocessors or other electronic components, and are used to execute the above-mentioned deep-buried tunnel surrounding rock internal blasting vibration prediction method.

[0042] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned method for predicting blasting vibration inside the surrounding rock of a deep tunnel are implemented. For example, the computer-readable storage medium may be the above-mentioned memory 802 including program instructions, and the above-mentioned program instructions may be executed by the processor 801 of the device 800 for predicting blasting vibration inside the surrounding rock of a deep tunnel to complete the above-mentioned method for predicting blasting vibration inside the surrounding rock of a deep tunnel.

[0043] Embodiment 4: Corresponding to the above method embodiment, a readable storage medium is also provided in this embodiment. The readable storage medium described below and the method for predicting blasting vibration inside the surrounding rock of a deep tunnel described above can refer to each other.

[0044] A readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for predicting blasting vibration inside surrounding rock of a deep-buried tunnel of the above method embodiment.

[0045] The readable storage medium may specifically be a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, or other readable storage medium that can store program codes.

[0046] 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.

[0047] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for predicting blasting vibration inside surrounding rock of a deep tunnel, characterized in that: include: Drill multiple test holes horizontally from the pilot tunnel into the surrounding rock, install blasting vibration sensors at the bottom of each test hole in turn, and evenly distribute the multiple test holes in front and behind the tunnel face with the tunnel face as the symmetry plane; Blasting the subsequent tunnel to obtain vibration data of the test hole collected by the vibration sensor; The distance from the explosion center of the test hole in front of the tunnel face is obtained, and the Sadovsky formula is fitted using the vibration data of the test hole in front of the tunnel face and the distance from the explosion center to obtain the first blasting vibration velocity prediction model in front of the tunnel face; The blasting charge of the subsequent tunnel is obtained, and the vibration data and blasting charge of the test hole behind the tunnel face are substituted into the first blasting vibration velocity prediction model to calculate the actual explosion center distance from the explosion source to the test hole; The actual blast center distance and vibration data of the test hole behind the tunnel face are used to fit the Sadovsky formula to obtain the second blasting vibration velocity prediction model behind the tunnel face, including: Obtain the center coordinates of the test hole opening behind the tunnel face; The center coordinates of the bottom of the test hole behind the tunnel face are obtained by inversion based on the center coordinates of the hole mouth and the drilling depth; Obtain the coordinates of the explosion source on the tunnel face, and use the coordinate system inversion method to obtain the propagation path of the stress wave to the bottom of the test hole behind the tunnel face based on the coordinates of the explosion source, the center coordinates of the hole bottom, and the actual explosion center distance; The Sadovsky formula is fitted based on the propagation path to obtain a second blasting vibration velocity prediction model behind the tunnel face.

2. The method for predicting blasting vibration inside surrounding rock of a deep tunnel according to claim 1, characterized in that: Several test holes are drilled horizontally from the pilot tunnel into the surrounding rock, including: Determine the horizontal height of the test hole on the wall of the advance tunnel, and determine the horizontal distance between two adjacent test holes; Acquire a drilling depth of a test hole, wherein the drilling depth includes a first depth and a second depth, and a plurality of test holes are drilled alternately according to the first depth and the second depth; Drilling at least four test holes in sequence along the front of the tunnel face according to the horizontal height, horizontal distance and depth; Taking the tunnel face as the symmetry plane, the same number of test holes are drilled symmetrically behind the tunnel face.

3. The method for predicting blasting vibration inside surrounding rock of a deep tunnel according to claim 1, characterized in that: A blasting vibration sensor is installed at the bottom of each test hole, and the blasting vibration sensor includes: A sensor body, wherein the sensor body is located on the upper part of the blasting vibration sensor; A containing box, the containing box is located at the lower part of the blasting vibration sensor, a blocking layer is arranged between the containing box and the sensor body, and the containing box is provided with a plurality of through holes along the circumferential direction; A push-pull device is located inside the containing box, the top of the push-pull device is fixedly connected to the top surface of the inside of the containing box, and multiple support rods of the push-pull device extend outward along multiple through holes to contact the inner wall of the test hole, thereby fixing the blasting vibration sensor in the test hole.

4. The method for predicting blasting vibration inside surrounding rock of a deep tunnel according to claim 3, characterized in that: The push-pull device comprises: A push-pull rod, wherein a spring is arranged inside the push-pull rod in a vertical direction, and a slider is sleeved outside the push-pull rod in a circumferential direction, and the slider slides in the radial direction of the push-pull rod; a button is arranged below the push-pull rod; An end handle, wherein a bayonet is provided on a side wall of the end handle, and the end handle is fixedly connected to the button via the bayonet; A rod cap, the rod cap being fixed to the top of the push-pull rod; The pulley block includes a fixed pulley, a slider and a traction rope. The fixed pulley is fixed on the rod cap, and the slider is nested on the outside of the push-pull rod and moves radially along the push-pull rod. One end of the traction rope is connected to the fixed pulley and the slider in sequence, and the other end radially passes through the inside of the spring and is connected to a hook.

5. A blasting vibration prediction system for deep tunnel surrounding rock, characterized in that: include: Arrangement module: Drill multiple test holes horizontally from the pilot tunnel to the surrounding rock, install blasting vibration sensors at the bottom of each test hole in turn, and evenly distribute the multiple test holes in front and behind the tunnel face with the tunnel face as the symmetry plane; Acquisition module: blasting the subsequent tunnel to acquire vibration data of the test hole collected by the vibration sensor; The first fitting module: obtains the distance from the explosion center of the test hole in front of the tunnel face, fits the Sadovsky formula using the vibration data of the test hole in front of the tunnel face and the distance from the explosion center, and obtains the first blasting vibration velocity prediction model in front of the tunnel face; The first calculation module: obtains the blasting charge of the rear tunnel, substitutes the vibration data and blasting charge of the test hole behind the tunnel face into the first blasting vibration velocity prediction model, and calculates the actual explosion center distance from the explosion source to the test hole; The second fitting module: using the actual blast center distance and vibration data of the test hole behind the tunnel face to fit the Sadovsky formula, a second blasting vibration velocity prediction model behind the tunnel face is obtained, including: The third acquisition unit is used to acquire the center coordinates of the test hole opening behind the tunnel face; The first inversion unit: the center coordinates of the bottom of the test hole behind the tunnel face are obtained by inversion based on the center coordinates of the hole mouth and the drilling depth; The second inversion unit: obtains the coordinates of the explosion source on the tunnel face, and uses the coordinate system inversion method to obtain the propagation path of the stress wave to the bottom of the test hole behind the tunnel face based on the coordinates of the explosion source, the center coordinates of the hole bottom, and the actual explosion center distance; Fitting unit: Fitting the Sadovsky formula based on the propagation path to obtain a second blasting vibration velocity prediction model behind the tunnel face.

6. The system for predicting blasting vibration inside surrounding rock of a deep tunnel according to claim 5, characterized in that: The arrangement module comprises: The first determination unit: determines the horizontal height of the test hole drilled on the preceding tunnel wall, and determines the horizontal distance between two adjacent test holes; A first acquisition unit is used to acquire a drilling depth of a test hole, where the drilling depth includes a first depth and a second depth, and a plurality of test holes are drilled alternately according to the first depth and the second depth; The first arrangement unit: drilling at least four test holes in sequence along the front of the tunnel face according to the horizontal height, horizontal distance and depth; The second arrangement unit: taking the tunnel face as the symmetry plane, the same number of test holes are drilled symmetrically behind the tunnel face.

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