An apparatus and method for simultaneously measuring the roughness and dip angle of rock mass structural surfaces.

Abstract

This invention provides an apparatus and method for simultaneously measuring the roughness and tilt angle of a rock mass surface, relating to the technical field of rock mass quality testing. The method involves placing the measuring device on the surface of the rock mass to be tested, using a laser rangefinder and a gravity sensor to obtain laser rangefinder measurement data; processing the obtained laser rangefinder measurement data using a built-in processing program on an external mobile terminal, displaying it as a smooth curve in a two-dimensional coordinate system to obtain a measured smooth curve; comparing the measured smooth curve with ten Barton standard curves to obtain the roughness of the rock mass surface to be tested; and analyzing the force on the rock mass surface to be tested using a gravity sensor to obtain the tilt angle of the rock mass surface to be tested. This invention solves the technical problems of low accuracy in measuring the roughness Jr of the rock mass surface in existing technologies, and the inability to simultaneously measure the tilt angle of the rock mass surface.

Description

Technical Field

[0001] This invention relates to the field of rock mass quality testing technology, specifically to a device and method for simultaneously measuring the roughness and tilt angle of rock mass structural surfaces. Background Technology

[0002] Engineering practice has shown that the value of rock mass Q is strongly correlated with the stability of underground engineering. Based on the relationship between the type and parameters of permanent support structures in underground engineering and the Q value, Barton established a relationship diagram between Q value and support type. Based on this diagram, the Q value can be calculated through on-site statistics. According to the calculated Q value, the type and parameters of permanent support for underground engineering can be determined according to the relationship diagram, providing a quick, convenient, and safe option for support structure design in underground engineering construction. While the Q system is effective in determining the type of permanent support for underground engineering, this is contingent on the reliability of the determined Q value. If the Q value is smaller than the actual value, this unrealistic Q value is fatal to underground engineering, potentially leading to support failure or even large-scale instability of the surrounding rock, causing huge economic losses and even casualties. Conversely, if the Q value is larger than the theoretical Q value corresponding to the actual surrounding rock mass, it will result in waste of materials and human resources, negatively impacting the revenue of the construction unit.

[0003] In the Barton-Q system, the formula for calculating the Q-classification of rock mass is: Roughness Jr appears as an independent parameter in the molecule, and roughness Jr has a significant impact on evaluating rock mass quality.

[0004] Currently, the common technique for determining the roughness Jr value is to use a core sampler to measure the cross-section of the borehole core on-site, and then manually compare the curve of the core sampler with the ten standard curves of Paton to obtain the roughness Jr value. In practice, this method requires operators to perform both the measurement and the comparison of results, which leads to strong subjectivity of the operators, a large influence of human subjectivity, low accuracy of the roughness value, and seriously affects work efficiency. Summary of the Invention

[0005] This application provides an apparatus and method for simultaneously determining the roughness and tilt angle of rock mass structural surfaces. This addresses the technical problems of existing methods using the Barton method to determine rock mass structural surface roughness Jr, which suffers from significant human influence, resulting in low accuracy. Furthermore, it fails to simultaneously measure the tilt angle of the rock mass structural surface. The method achieves rapid and accurate measurement of the roughness and tilt angle of the rock mass structural surface, thereby obtaining a precise rock quality Q value. This reduces economic losses and personnel casualties caused by discrepancies between the Q value and the actual surrounding rock mass quality.

[0006] In view of the above problems, this application provides an apparatus and method for simultaneously measuring the roughness and dip angle of rock mass structural surfaces.

[0007] In a first aspect, embodiments of this application provide a device for simultaneously measuring the roughness and tilt angle of a rock mass surface. The device is connected to an external mobile terminal 2 via a transmission harness 3. The device includes: a housing 1; a damping slide rail 5 disposed on the top of the housing 1; a laser rangefinder and a gravity sensor 4 disposed on the top of the housing 1 and installed at the starting end of the damping slide rail 5; a travel limit micro switch 7 disposed on the top of the housing 1 and installed at the end of the damping slide rail 5; and a scale 6 disposed on the top of the housing along the length of the damping slide rail 5.

[0008] Secondly, embodiments of this application provide a method for simultaneously measuring the roughness and tilt angle of a rock mass surface. The method is applied to a device for simultaneously measuring the roughness and tilt angle of a rock mass surface. The device is connected to an external mobile terminal 2 via a transmission cable 3. The method includes: placing the measuring device on the rock mass surface to be measured, and adjusting the laser rangefinder and gravity sensor 4 to the starting point of the damping slide rail 5; controlling the laser rangefinder and gravity sensor 4 to move at a constant speed along the tilt direction of the rock mass surface to be measured until they touch the travel limit microswitch 7 at the end of the damping slide rail 5, at which point the movement ends; wherein, during the constant speed movement, the laser rangefinder and gravity sensor 4 are used to measure the roughness and tilt angle of a rock mass surface. The laser rangefinder in the force sensor 4 measures the distance between the laser rangefinder and the rock mass structure surface to be measured, obtaining laser rangefinder measurement data; the built-in processing program of the external mobile terminal 2 processes the obtained laser rangefinder measurement data and displays it as a smooth curve in a two-dimensional plane coordinate system, obtaining a measured smooth curve; the measured smooth curve is compared with ten Barton standard curves to obtain a comparison result; based on the comparison result, the roughness of the rock mass structure surface to be measured is obtained; the forces on the rock mass structure surface to be measured are analyzed using the laser rangefinder and the gravity sensor in the gravity sensor 4 to obtain the tilt angle of the rock mass structure surface to be measured.

[0009] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0010] This application provides an apparatus and method for simultaneously measuring the surface roughness and tilt angle of a rock mass structure. The method is applied to an apparatus for simultaneously measuring the surface roughness and tilt angle of a rock mass structure. The apparatus is connected to an external moving end 2 via a transmission cable 3. The measuring device is placed on the surface of the rock mass to be measured, and the laser rangefinder and gravity sensor 4 are adjusted to the starting point of the damping slide rail 5. The laser rangefinder and gravity sensor 4 are controlled to move at a constant speed along the tilt direction of the surface of the rock mass to be measured until they touch the travel limit microswitch 7 at the end of the damping slide rail 5, at which point the movement ends. During the constant speed movement, the laser rangefinder and gravity sensor... The laser rangefinder in section 4 measures the distance between the laser rangefinder and the rock mass structure surface to be measured, obtaining laser rangefinder measurement data; the built-in processing program of the external mobile terminal 2 processes the obtained laser rangefinder measurement data and displays it as a smooth curve in a two-dimensional plane coordinate system, obtaining a measured smooth curve; the measured smooth curve is compared with ten Barton standard curves to obtain a comparison result; based on the comparison result, the roughness of the rock mass structure surface to be measured is obtained; the laser rangefinder and the gravity sensor in gravity sensor 4 are used to analyze the force on the rock mass structure surface to be measured, obtaining the tilt angle of the rock mass structure surface to be measured. This invention solves the technical problems of existing technologies that use the Barton method to determine the roughness Jr of rock mass structural surfaces, which are greatly affected by human factors, resulting in low accuracy of the measured roughness Jr. Furthermore, it cannot simultaneously measure the inclination angle of the rock mass structural surface. This invention achieves rapid and accurate measurement of the roughness and inclination angle of the rock mass structural surface, thereby obtaining a precise rock quality Q value. This reduces economic losses and personnel casualties caused by inconsistencies between the Q value and the actual surrounding rock mass quality. Attached Figure Description

[0011] Figure 1 A schematic diagram of the process for a device that simultaneously measures the roughness and tilt angle of a rock mass surface, as provided in this application;

[0012] Figure 2 A top view of the damping slide rail in a device for simultaneously measuring the roughness and tilt angle of rock mass structural surfaces, provided in this application;

[0013] Figure 3 A bottom view of the damping slide rail in a device for simultaneously measuring the roughness and tilt angle of rock mass structural surfaces, provided in this application;

[0014] Figure 4 A flowchart illustrating a method for simultaneously determining the roughness and dip angle of a rock mass structural surface, as provided in this application;

[0015] Figure 5The ten standard curves of Paton provided in this application for a method to simultaneously determine the roughness and dip angle of rock mass structural surfaces;

[0016] Figure 6 The provided image shows a measured smooth curve from a method for simultaneously determining the roughness and dip angle of a rock mass surface, which is provided in this application.

[0017] Explanation of reference numerals in the attached diagram: 1. Housing; 2. External mobile terminal; 3. Transmission harness; 4. Laser rangefinder and gravity sensor; 5. Damping slide rail; 6. Scale; 7. Travel limit micro switch. Detailed Implementation

[0018] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This application provides an apparatus and method for simultaneously measuring the roughness and tilt angle of rock mass structural surfaces. This addresses the technical problems of existing methods using the Barton method to determine the roughness Jr of rock mass structural surfaces, which suffers from significant human influence, resulting in low accuracy. Furthermore, it fails to simultaneously measure the tilt angle of the rock mass structural surfaces. The method achieves rapid and accurate measurement of the roughness and tilt angle of rock mass structural surfaces, thereby obtaining a precise rock quality Q value. This reduces economic losses and personnel casualties caused by discrepancies between the Q value and the actual surrounding rock mass quality.

[0020] Example 1

[0021] like Figure 1-3 As shown, this application provides a device for simultaneously measuring the surface roughness and tilt angle of a rock mass. The device is connected to an external mobile terminal 2 via a transmission harness 3. The device includes:

[0022] The enclosure 1 includes a laser rangefinder and a gravity sensor 4, a damping slide rail 5, a scale 6, and a travel limit micro switch 7. The laser rangefinder and gravity sensor 4, the damping slide rail 5, and the travel limit micro switch 7 are located on the top of the enclosure 1. The laser rangefinder and gravity sensor 4 are installed at the starting end of the damping slide rail 5. The travel limit micro switch 7 is installed at the ending end of the damping slide rail 5. The scale 6 is located on the top of the enclosure along the length of the damping slide rail 5 and is used to mark the movement distance of the laser rangefinder and gravity sensor 4 along the length of the damping slide rail 5.

[0023] The present application provides a device for simultaneously measuring the roughness and tilt angle of a rock mass surface. It has a simple structure, is lightweight and portable, and can be carried to the work site for on-site measurement. It can also simultaneously measure the roughness and tilt angle of the rock mass surface.

[0024] Example 2

[0025] like Figure 4 As shown, this application provides a method for simultaneously measuring the surface roughness and dip angle of a rock mass. The method is applied in an apparatus for simultaneously measuring the surface roughness and dip angle of a rock mass. The measuring apparatus is connected to an external mobile terminal 2 via a transmission cable harness 3. The method includes:

[0026] S100: Place the measuring device on the surface of the rock mass to be measured, and adjust the laser rangefinder and gravity sensor 4 to the starting end of the damping slide rail 5;

[0027] Specifically, this application provides a method for simultaneously measuring the surface roughness and tilt angle of a rock mass. The method is applied to a device for simultaneously measuring the surface roughness and tilt angle of a rock mass. The measuring device is connected to an external mobile terminal 2 via a transmission cable 3. Preferably, the external mobile terminal 2 can provide external power to the laser rangefinder and gravity sensor 4 in the measuring device, and has a built-in processing program and a result output display for processing measurement data and outputting results.

[0028] Before measuring the rock mass structure surface to be measured, the measuring device is placed on the rock mass structure surface to be measured. Preferably, the rock mass structure surface to be measured can be an exposed rock mass structure surface or a core fracture surface, which can be selected according to actual needs. The laser rangefinder and gravity sensor 4 in the measuring device are adjusted to the starting end of the damping slide rail 5. By using the cooperation of the laser rangefinder, gravity sensor 4 and damping slide rail 5, the distance at different positions on the inclined surface of the rock mass structure surface to be measured can be realized.

[0029] S200: Control the laser rangefinder and gravity sensor 4 to move at a constant speed along the inclined surface of the rock mass structure to be measured until they touch the travel limit micro switch 7 at the end of the damping slide rail 5, at which point the movement ends; wherein, during the constant speed movement, the laser rangefinder in the laser rangefinder and gravity sensor 4 is used to measure the distance between the laser rangefinder and the rock mass structure to be measured, and obtain the laser rangefinder measurement data;

[0030] Specifically, the measuring device is placed on the surface of the rock mass to be measured, and the laser rangefinder and gravity sensor 4 are adjusted to the starting point of the damping slide rail 5. The laser rangefinder and gravity sensor 4 are then controlled to move at a constant speed along the inclined surface of the rock mass to be measured until they reach the end of the damping slide rail 5 and touch the travel limit micro switch 7 at the end of the damping slide rail 5, at which point the movement ends.

[0031] Preferably, the length of the damping slide rail 5 is greater than 10 cm, so that the effective measurement stroke of the laser rangefinder is 10 cm, which meets the measurement distance requirements of the Patton ten standard curves.

[0032] Preferably, the measuring device is provided with a scale 6, which is used to mark the movement distance of the laser rangefinder and the gravity sensor 4 along the length direction of the damping slide rail 5.

[0033] During the uniform motion of the laser rangefinder and gravity sensor 4 along the inclined surface of the rock mass structure to be measured, the laser rangefinder in the laser rangefinder and gravity sensor 4 measures the distance between the laser rangefinder and the rock mass structure to be measured, obtaining laser rangefinder measurement data. Preferably, during the measurement of the distance between the laser rangefinder and the rock mass structure to be measured using the laser rangefinder in the laser rangefinder and gravity sensor 4, the damping slide rail 5 ensures that the laser is always aligned with the normal direction of the top of the box 1, and is perpendicularly irradiated onto the inclined surface of the rock mass structure to be measured. Furthermore, the damping slide rail 5 also ensures that the distance between the structure and the laser rangefinder is measured once every certain distance the laser rangefinder moves along the inclined surface of the rock mass structure to be measured, wherein the moving distance and the distance are in one-to-one correspondence, together constituting the laser rangefinder measurement data.

[0034] For example, a scale with 0.5 cm increments is set around the damping slide rail 5, and the starting position of the laser rangefinder is adjusted so that the laser rangefinder starts measuring distance from the starting point of the scale. Assuming that the effective measuring stroke of the laser rangefinder is 10 cm, the laser rangefinder moves upward 0.5 cm along the inclined direction of the rock mass surface to be measured and measures the distance once. A total of 20 points are measured along the damping slide rail, and each point corresponds to a distance value. The moving distance and the corresponding distance value together constitute the measurement data of the laser rangefinder.

[0035] S300: The built-in processing program of the external mobile terminal 2 is used to process the obtained laser rangefinder measurement data and display it in the form of a smooth curve in a two-dimensional plane coordinate system to obtain the measured smooth curve.

[0036] Specifically, the external mobile terminal 2 has a built-in processing program and output display. The built-in processing program of the external mobile terminal 2 processes the obtained laser rangefinder measurement data and displays the laser rangefinder measurement data in the form of a smooth curve in a two-dimensional plane coordinate system to obtain the measured smooth curve.

[0037] Furthermore, the laser rangefinder measurement data is processed using the built-in processing program of the external mobile terminal 2, and displayed as a smooth curve in a two-dimensional coordinate system. Specifically, this involves: constructing a two-dimensional coordinate system with the laser rangefinder's movement distance as the abscissa and the laser rangefinder's measured distance as the ordinate; converting the obtained laser rangefinder measurement data into a set of points in the two-dimensional coordinate system; and using the built-in processor of the external mobile terminal 2, plotting the curve using a nonlinear fitting method, such as... Figure 6 As shown, the measured smooth curve is obtained, which intuitively reflects the degree of undulation of the rock mass structure surface to be measured, and completes the automatic measurement of the rock mass structure surface to be measured.

[0038] S400: Compare the measured smooth curve with ten Barton standard curves to obtain the comparison results;

[0039] Specifically, such as Figure 5 The image shows ten Barton standard curves. The obtained measured smooth curve is compared with the ten Barton standard curves with different parameters to obtain the magnitude of the difference between the measured smooth curve and the ten Barton standard curves with different parameters, that is, to obtain the comparison result.

[0040] Furthermore, the comparison of the obtained measured smooth curve with ten Barton standard curves to obtain the comparison results specifically includes: using the built-in processing program of the external mobile terminal 2 to compare the obtained measured smooth curve with the ten Barton standard curves for peak error, difference error and absolute error respectively.

[0041] Peak error refers to the average of the relative errors of the peak value of the measured smooth curve D′(s) with respect to the peaks and troughs of the Barton standard curve D(s). The formula for calculating peak error is as follows:

[0042]

[0043] Where Erp is the peak error; max[D'(s)] is the measured peak value of the smooth curve; max[D(s)] is the peak value of the Barton standard curve; min[D'(s)] is the measured valley value of the smooth curve; and min[D(s)] is the valley value of the Barton standard curve.

[0044] The difference error refers to the average error of the difference between the measured smooth curve D′(s) and the Barton standard curve D(s) relative to the peak value of the Barton standard curve D(s). The formula for calculating the difference error is as follows:

[0045]

[0046] Where Err is the difference error; max[D'(s)-D(s)] is the maximum value of the difference between the peak value of the measured smooth curve and the peak value of the Barton standard curve; min[D'(s)-D(s)] is the minimum value of the difference between the peak value of the measured smooth curve and the peak value of the Barton standard curve; min[D'(s)] is the valley value of the measured smooth curve; min[D(s)] is the valley value of the Barton standard curve;

[0047] The absolute error is the ratio of the absolute value of the difference between the measured smooth curve D′(s) and the Barton standard curve D(s), |D′(s)-D(s)|, to the absolute value of the Barton standard curve D(s), |D(s)|. The formula for calculating the absolute error is as follows:

[0048]

[0049] In the formula, Ers is the absolute error; D′(s) is the measured smooth curve; D(s) is the Barton standard curve; The absolute value of the difference between the n peaks of the measured smooth curve D′(s) and the n peaks of the Barton standard curve D(s); It is the sum of the absolute values ​​of the n peaks of the Barton standard curve D(s);

[0050] The peak error comparison result is obtained by using the peak error calculation formula, the difference error comparison result is obtained by using the difference error calculation formula, and the absolute error comparison result is obtained by using the absolute error calculation formula. Then, the comparison result between the measured smooth curve and the ten Barton standard curves is obtained, which significantly reduces the influence of human factors in determining the surface roughness of rock mass structure using the Barton method and improves the accuracy of the field measurement of surface roughness Jr of rock mass structure.

[0051] S500: Based on the comparison results, obtain the roughness of the rock mass structure surface to be tested;

[0052] Specifically, the roughness of the rock mass surface under test is obtained based on the magnitude of the peak error, difference error, and absolute error between the obtained measured smooth curve and the ten Barton standard curves.

[0053] Furthermore, based on the comparison results, obtaining the roughness of the rock mass structure surface to be tested specifically includes: comparing the peak error, difference error, and absolute error between the measured smooth curve and ten Barton standard curves, comprehensively selecting the corresponding Barton standard curve with the smaller error value, determining the roughness corresponding to the selected Barton standard curve as the roughness of the rock mass structure surface to be tested, and outputting the measured curve graph, standard curve graph, and roughness value on the mobile terminal display.

[0054] S600: The force on the rock mass structure surface to be tested is analyzed using the laser rangefinder and the gravity sensor in the gravity sensor 4 to obtain the tilt angle of the rock mass structure surface to be tested.

[0055] Specifically, the laser rangefinder and the gravity sensor in gravity sensor 4 are used to analyze the force on the rock mass structure surface to be measured, and the inclination angle of the rock mass structure surface is obtained. Specifically, during the operation of the measuring device, the laser rangefinder and the gravity sensor in gravity sensor 4 are used to analyze the force on the rock mass structure surface to be measured. At this time, gravity sensor 4 will automatically sense the force state. Based on the components of gravity along the inclined plane and perpendicular to the inclined plane, the inclination angle of the rock mass structure surface to be measured is calculated. The principle is as follows: the component of gravity along the inclined plane is T1 = g·sinθ; the component of gravity perpendicular to the inclined plane is T2 = g·cosθ; based on the actual force of the gravity sensor, the inclination angle θ of the inclined plane is solved.

[0056] In summary, the apparatus and method for simultaneously measuring the roughness and dip angle of rock mass structural surfaces provided in this application have the following technical advantages:

[0057] 1. The device provided in this application embodiment for simultaneously measuring the roughness and tilt angle of rock mass structural surfaces is simple in structure, lightweight and portable, and can be carried to the work site for on-site measurement, and can realize the simultaneous measurement of the roughness and tilt angle of rock mass structural surfaces.

[0058] 2. In this embodiment, the measuring device is placed on the surface of the rock mass to be measured, and the laser rangefinder and gravity sensor 4 are adjusted to the starting point of the damping slide rail 5. The laser rangefinder and gravity sensor 4 are controlled to move at a constant speed along the inclined surface of the rock mass to be measured until they touch the travel limit micro switch 7 at the end of the damping slide rail 5, at which point the movement ends. During the constant speed movement, the laser rangefinder in the laser rangefinder and gravity sensor 4 measures the distance between the laser rangefinder and the surface of the rock mass to be measured, obtaining the distance. The laser rangefinder measures the data; the built-in processing program of the external mobile terminal 2 processes the obtained laser rangefinder measurement data and displays it as a smooth curve in a two-dimensional plane coordinate system to obtain the measured smooth curve; the measured smooth curve is compared with ten Barton standard curves to obtain the comparison result; based on the comparison result, the roughness of the rock mass surface to be measured is obtained; the force on the rock mass surface to be measured is analyzed using the laser rangefinder and the gravity sensor in the gravity sensor 4 to obtain the tilt angle of the rock mass surface to be measured. This solves the technical problem that the existing technology uses the Barton method to determine the roughness Jr of the rock mass surface, which is greatly affected by human factors, resulting in low accuracy of the measured roughness Jr of the rock mass surface. At the same time, it cannot measure the tilt angle of the rock mass surface while detecting the roughness Jr of the rock mass surface. This achieves the technical effect of quickly and accurately measuring the roughness and tilt angle of the rock mass surface, thereby obtaining an accurate rock mass quality Q value, reducing the economic losses and personnel casualties caused by the inconsistency between the Q value result and the actual surrounding rock mass quality.

[0059] 3. In the embodiments of this application, the set of points measured by the laser rangefinder is connected by a smooth measured curve formed by nonlinear fitting, which can intuitively reflect the degree of undulation of the structure surface in this direction. At the same time, the measured curve, roughness Jr and tilt angle of the structure surface are directly output through the external mobile terminal, and the results are accurate, convenient and efficient to use.

[0060] The above describes the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also within the scope of protection of the present invention.

Claims

1. A method for simultaneously determining the roughness and inclination angle of structural planes in rock mass, characterized in that, The method is applied to a device for simultaneously measuring the surface roughness and tilt angle of a rock mass structure. The measuring device is connected to an external moving end (2) via a transmission harness (3). The device includes: a housing (1); a damping slide rail (5) disposed on the top of the housing (1); a laser rangefinder and a gravity sensor (4) disposed on the top of the housing (1) and installed at the starting end of the damping slide rail (5); a travel limit micro switch (7) disposed on the top of the housing (1) and installed at the end of the damping slide rail (5); and a scale (6) disposed on the top of the housing along the length of the damping slide rail (5). The method includes: Place the measuring device on the surface of the rock mass to be measured, and adjust the laser rangefinder and gravity sensor (4) to the starting end of the damping slide rail (5); The laser rangefinder and gravity sensor (4) are controlled to move at a constant speed along the inclined surface of the rock mass structure to be measured until they touch the travel limit micro switch (7) at the end of the damping slide rail (5), and the movement ends; wherein, during the constant speed movement, the laser rangefinder in the laser rangefinder and gravity sensor (4) is used to measure the distance between the laser rangefinder and the rock mass structure to be measured, and obtain the laser rangefinder measurement data; The laser rangefinder measurement data obtained is processed by the built-in processing program of the external mobile terminal (2) and displayed in a two-dimensional plane coordinate system in the form of a smooth curve to obtain the measured smooth curve. The measured smooth curve was compared with ten Barton standard curves to obtain the comparison results; Based on the comparison results, the roughness of the rock mass structure surface to be tested is obtained; The force on the rock mass structure surface to be tested is analyzed by using the laser rangefinder and the gravity sensor (4) to obtain the tilt angle of the rock mass structure surface to be tested; The measured smooth curve was compared with ten Barton standard curves to obtain the comparison results, including: Using the built-in processing program of the external mobile terminal (2), the obtained measured smooth curve is compared with ten Barton standard curves for peak error, difference error and absolute error; Peak error refers to the average of the relative errors of the peak value of the measured smooth curve D′(s) with respect to the peaks and troughs of the Barton standard curve D(s). The formula for calculating peak error is as follows: ； Where Erp is the peak error; max[D'(s)] is the measured peak value of the smooth curve; max[D(s)] is the peak value of the Barton standard curve; min[D'(s)] is the measured valley value of the smooth curve; and min[D(s)] is the valley value of the Barton standard curve. The difference error refers to the average error of the difference between the measured smooth curve D′(s) and the Barton standard curve D(s) relative to the peak value of the Barton standard curve D(s). The formula for calculating the difference error is as follows: ； Where Err is the difference error; max[D'(s)-D(s)] is the maximum value of the difference between the peak value of the measured smooth curve and the peak value of the Barton standard curve; min[D'(s)-D(s)] is the minimum value of the difference between the peak value of the measured smooth curve and the peak value of the Barton standard curve; min[D'(s)] is the valley value of the measured smooth curve; min[D(s)] is the valley value of the Barton standard curve; The absolute error is the ratio of the absolute value of the difference between the measured smooth curve D′(s) and the Barton standard curve D(s), |D′(s)-D(s)|, to the absolute value of the Barton standard curve D(s), |D(s)|. The formula for calculating the absolute error is as follows: ； In the formula, Ers is the absolute error; D′(s) is the measured smooth curve; D(s) is the Barton standard curve; The absolute value of the difference between the n peaks of the measured smooth curve D′(s) and the n peaks of the Barton standard curve D(s); It is the sum of the absolute values ​​of the n peaks of the Barton standard curve D(s); The peak error comparison result is obtained by using the peak error calculation formula, the difference error comparison result is obtained by using the difference error calculation formula, and the absolute error comparison result is obtained by using the absolute error calculation formula, thereby obtaining the comparison result between the measured smooth curve and the ten Barton standard curves.

2. The method as described in claim 1, characterized in that, The rock mass structural surface to be tested is either the rock mass structural surface exposed on site or the fracture surface of the rock core.

3. The method as described in claim 1, characterized in that, The length of the damping slide rail (5) is greater than 10 cm.

4. The method as described in claim 1, characterized in that, The distance between the laser rangefinder and the surface of the rock mass to be measured is measured using the laser rangefinder and the gravity sensor (4), including: During the process of measuring the distance between the laser rangefinder and the rock mass structure surface to be measured using the laser rangefinder and the gravity sensor (4), the laser is kept in the same direction as the normal direction of the top of the box (1) and is vertically irradiated onto the inclined surface of the rock mass structure surface to be measured.

5. The method as described in claim 4, characterized in that, The laser rangefinder, which is part of the laser rangefinder and gravity sensor (4), measures the distance between the laser rangefinder and the surface of the rock mass to be measured, and obtains laser rangefinder measurement data, including: The laser rangefinder measures the distance between the structure and the laser rangefinder every certain distance it moves along the inclined surface of the rock mass structure. The moving distance and the measured distance are in one-to-one correspondence and together constitute the measurement data of the laser rangefinder.

6. The method as described in claim 5, characterized in that, The process of using the built-in processing program of the external mobile terminal (2) to process the obtained laser rangefinder measurement data and display it in the form of a smooth curve in a two-dimensional plane coordinate system to obtain the measured smooth curve includes: A two-dimensional plane coordinate system is constructed with the distance moved by the laser rangefinder as the abscissa and the distance measured by the laser rangefinder as the ordinate. The obtained laser rangefinder measurement data is then converted into a set of points in the two-dimensional coordinate system. By using the built-in processing program of the external mobile terminal (2), a nonlinear fitting method is used to draw the curve and obtain the measured smooth curve.

7. The method as described in claim 1, characterized in that, Based on the comparison results, the roughness of the rock mass structural surface to be tested is obtained, including: By comparing the magnitudes of the three error values ​​of the measured smooth curve and the ten Barton standard curves, the corresponding Barton standard curve with the smaller error value is selected. The roughness corresponding to the selected Barton standard curve is determined as the roughness of the rock mass structure surface to be measured, and the measured curve, standard curve and roughness value are output to the mobile terminal display.

8. The method as described in claim 1, characterized in that, The stress on the rock mass structure surface to be measured is analyzed using the laser rangefinder and the gravity sensor (4) to obtain the inclination angle of the rock mass structure surface to be measured, including: During the operation of the measuring device, the force on the rock mass structure surface to be measured is analyzed by using the laser rangefinder and the gravity sensor (4). Based on the components of gravity along the inclined plane and perpendicular to the inclined plane, the inclination angle of the rock mass structure surface to be measured is calculated.

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