Deep rock mass while drilling data processing method and related device
By performing median filtering on the torque, pressure, rotational speed, and drilling speed of the drill rod during its operation in deep rock mass, and combining this with spectrum correction, the problem of accurately measuring the strength of deep rock mass using traditional methods was solved. This enabled rapid and accurate acquisition of rock mass parameters, thereby improving construction safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA STATE RAILWAY GRP CO LTD
- Filing Date
- 2023-04-10
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional indoor rock mass testing methods are cumbersome and difficult to test the properties of surrounding rock in deep-buried tunnels, especially fractured surrounding rock, in real-world environments. This results in a lack of quantitative indicators in support design and increases safety hazards in deep construction.
By acquiring the torque, pressure, rotational speed, and drilling speed of the drill pipe during drilling into deep rock, median filtering is performed to determine the rock strength index. Combined with the standard uniaxial compressive strength and the rock strength index, the uniaxial compressive strength of the deep rock is calculated, and the strength results are corrected using the vibration signal spectrum.
It enables rapid and accurate determination of uniaxial compressive strength in deep rock masses, eliminates construction noise interference, improves the accuracy of parameter measurement, and supports the safety of deep-buried tunnel construction.
Smart Images
Figure CN116624137B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of rock mass exploration technology, and in particular to a method and related apparatus for processing deep rock mass drilling data. Background Technology
[0002] Real-time testing of deep rock mechanics parameters is a prerequisite for safe construction of deep-buried tunnels and large underground cavern complexes. Traditional indoor rock testing methods are cumbersome and time-consuming, making it difficult to test the properties of surrounding rock in real-world environments, especially for fractured surrounding rock requiring reinforced support. This lack of effective core sampling hinders the design of support systems for deep fractured rock, contributing significantly to safety accidents during the construction of large underground cavern complexes. Therefore, achieving evaluation of uniaxial compressive strength of deep rock through geological / anchor drilling measurements while eliminating environmental and construction background noise is a pressing technological challenge. Summary of the Invention
[0003] In view of this, the purpose of this application is to propose a method and related apparatus for processing data while drilling in deep rock masses.
[0004] To achieve the above objectives, this application provides a method for processing deep rock mass drilling data, including:
[0005] To obtain the torque, pressure, rotational speed, and drilling speed of the drill pipe during the drilling process into deep rock;
[0006] The torque, pressure, rotational speed, and drilling speed are respectively subjected to median filtering to obtain filtered torque, filtered pressure, filtered rotational speed, and filtered drilling speed.
[0007] The test rock strength index of the deep rock mass is determined based on the filter torque, the filter pressure, the filter rotation speed, and the filter drilling speed.
[0008] The uniaxial compressive strength of the deep rock mass is determined based on the standard uniaxial compressive strength, the standard rock strength index, and the test rock strength index.
[0009] In some embodiments, median filtering is performed on the torque, the pressure, the rotational speed, and the drilling speed, specifically including:
[0010] Determine the target drilling data; the target drilling data is any one of the torque, the pressure, the rotational speed, and the drilling speed;
[0011] Acquire multiple drilling data points of the target drilling data within a preset time interval, and determine the median of the multiple drilling data points;
[0012] The median is used as the target of the median-filtered drilling data.
[0013] In some embodiments, the test rock strength index of the deep rock mass is determined by the following formula:
[0014] ;
[0015] Among them, S m (t) represents the filtering pressure, T m (t) represents the filter torque, N m (t) represents the filter rotation speed, V m (t) represents the filtered drilling speed, a m This indicates the strength index of the tested rock. t n This indicates the time point at which the parameters were acquired at the current moment.
[0016] In some embodiments, the uniaxial compressive strength of the deep rock mass is determined by the following formula:
[0017] ;
[0018] Among them, a m The test rock strength index is represented by a0, the standard rock strength index is represented by E0, the standard uniaxial compressive strength is represented by E, and the deep rock mass uniaxial compressive strength is represented by E.
[0019] In some embodiments, after determining the uniaxial compressive strength of the deep rock mass based on standard uniaxial compressive strength, standard rock strength index, and the test rock strength index, the method further includes:
[0020] The vibration signal of the drill rod during the drilling process into deep rock mass is obtained;
[0021] Perform a generalized S-transform on the vibration signal to obtain the spectrum of the vibration signal;
[0022] The uniaxial compressive strength of the deep rock mass is corrected based on the aforementioned spectrum.
[0023] In some embodiments, the uniaxial compressive strength of the deep rock mass is corrected based on the spectrum, specifically including:
[0024] The amplitude and frequency of the vibration signal are determined from the spectrum.
[0025] The correction coefficient is determined based on the amplitude and frequency, and the uniaxial compressive strength of the deep rock mass is corrected based on the correction coefficient.
[0026] The correction coefficient is determined using the following formula:
[0027]
[0028] in, f (t) represents the frequency, A(t) represents the amplitude, and max( f (t) represents the maximum frequency of the vibration signal within the preset time interval at the current moment, max(A(t)) represents the maximum amplitude of the vibration signal within the preset time interval at the current moment, and β represents the correction coefficient.
[0029] Accordingly, this application also provides a processing device for deep rock mass drilling data, including:
[0030] On-site main unit, drill pipe, drill pipe base, and short-circuit test during drilling;
[0031] The test-while-drilling (SWD) short circuit is used to detect the torque, pressure, rotational speed, and drilling speed of the drill pipe during the drilling process into deep rock. The SWD short circuit is located between the drill pipe base and the drill pipe.
[0032] The field host is configured as follows:
[0033] To obtain the torque, pressure, rotational speed, and drilling speed of the drill pipe during the drilling process into deep rock;
[0034] The torque, pressure, rotational speed, and drilling speed are respectively subjected to median filtering to obtain filtered torque, filtered pressure, filtered rotational speed, and filtered drilling speed.
[0035] The test rock strength index of the deep rock mass is determined based on the filter torque, the filter pressure, the filter rotation speed, and the filter drilling speed.
[0036] The uniaxial compressive strength of the deep rock mass is determined based on the standard uniaxial compressive strength, the standard rock strength index, and the test rock strength index.
[0037] In some embodiments, the test-while-drilling short circuit includes a torque-pressure composite sensor, an acceleration sensor, an inclination sensor, a rotational speed sensor, a short circuit bearing, a laser ranging baffle, a short circuit male connector, and a short circuit female connector; the short circuit male connector is connected to the female connector of the drill pipe base, and the short circuit female connector is connected to the male connector of the drill pipe.
[0038] Accordingly, this application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor executes the program to implement the deep rock mass drilling data processing method described above.
[0039] Accordingly, this application also provides a non-transitory computer-readable storage medium that stores computer instructions for causing a computer to execute the deep rock mass drilling data processing method described above.
[0040] As can be seen from the above, the deep rock mass drilling data processing method and related equipment provided in this application acquire the torque, pressure, rotational speed, and drilling speed of the drill pipe during the drilling process in deep rock mass; and perform median filtering on the torque, pressure, rotational speed, and drilling speed to obtain filtered torque, filtered pressure, filtered rotational speed, and filtered drilling speed; then determine the test rock strength index of the deep rock mass based on the filtered torque, filtered pressure, filtered rotational speed, and filtered drilling speed; and determine the uniaxial compressive strength of the deep rock mass based on the standard uniaxial compressive strength, standard rock strength index, and the test rock strength index. This allows for the determination of the uniaxial compressive strength of deep rock mass through drilling measurements during the drilling process, eliminates construction background noise in the drilling measurement parameters, improves the accuracy of the drilling measurement parameters, and further improves the accuracy of the determined uniaxial compressive strength of the deep rock mass. Attached Figure Description
[0041] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0042] Figure 1 This is a schematic flowchart illustrating a method for processing deep rock mass drilling data according to an embodiment of this application.
[0043] Figure 2 This is a schematic diagram of the pressure and filtering pressure of a drill rod during the drilling process in deep rock mass, according to an embodiment of this application.
[0044] Figure 3 This is a schematic diagram of the torque and filtering torque of a drill rod during the drilling process in deep rock mass, according to an embodiment of this application.
[0045] Figure 4 This is a schematic diagram of various measurement signals of drilling data during the drilling process of a drill pipe in a deep rock mass, according to an embodiment of this application.
[0046] Figure 5 This is a spectrum diagram of a vibration signal according to an embodiment of this application;
[0047] Figure 6This is a schematic diagram of the structure of a deep rock mass drilling data processing device according to an embodiment of this application;
[0048] Figure 7 This is a side view of a short circuit during drilling testing according to an embodiment of this application;
[0049] Figure 8 This is a front view of a short circuit during drilling testing according to an embodiment of this application;
[0050] Figure 9 This is a schematic diagram of the structure of a specific electronic device according to an embodiment of this application. Detailed Implementation
[0051] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.
[0052] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0053] As described in the background section, real-time testing of deep rock mechanics parameters is a prerequisite for safe construction of deep-buried tunnels and large underground cavern complexes. Currently, major projects such as the Sichuan-Tibet Railway are located in tectonically active zones, where the surrounding rock structure and mechanical properties of their deep-buried tunnels exhibit strong heterogeneity. In related technologies, rock mechanics parameters are often inaccurate or even undetectable, and the accuracy and standardization of rock mechanics parameters obtained by different methods cannot be quantified. There is an urgent need to overcome the major challenge of in-situ testing and interpretation of engineering mechanics parameters of deep rock masses in tectonically active zones, thereby improving the ability to conduct refined investigations of the surrounding rock of deep-buried tunnels along the Sichuan-Tibet Railway.
[0054] Therefore, there is a need to propose a rapid testing equipment and data processing method for deep rock masses during drilling, so as to provide important mechanical parameter identification basis for engineering and realize rapid and convenient exploration and design.
[0055] refer to Figure 1This is a flowchart illustrating a method for processing deep rock mass drilling data according to an embodiment of this application. The method includes the following steps:
[0056] S101, obtains the torque, pressure, rotational speed and drilling speed of the drill pipe during the drilling process into deep rock.
[0057] In practice, information such as drilling torque, pressure, vibration, drilling footage (drilling length), and rotational speed can be directly measured through a test-while-drilling (WWW) connection set between the drill pipe base and the drill pipe. This information can then be obtained from the WWW connection. Optionally, the drilling speed of the drill pipe can be obtained by calculating the drilling footage and time.
[0058] S102, the torque, the pressure, the rotational speed and the drilling speed are respectively subjected to median filtering to obtain filtered torque, filtered pressure, filtered rotational speed and filtered drilling speed.
[0059] In practice, since the torque, pressure, rotational speed and drilling speed obtained by direct measurement are subject to drilling environment and construction noise, it is necessary to perform median filtering on the torque, pressure, rotational speed and drilling speed respectively to obtain filtered torque, filtered pressure, filtered rotational speed and filtered drilling speed.
[0060] In some embodiments, median filtering is performed on the torque, the pressure, the rotational speed, and the drilling speed, specifically including:
[0061] Determine the target drilling data; the target drilling data is any one of the torque, the pressure, the rotational speed, and the drilling speed;
[0062] Acquire multiple drilling data points of the target drilling data within a preset time interval, and determine the median of the multiple drilling data points;
[0063] The median is used as the target of the median-filtered drilling data.
[0064] In specific implementation, the target drilling data is first determined. This target drilling data includes any one of the following: drill string torque, pressure, rotational speed, and drilling speed. The torque, pressure, rotational speed, and drilling speed can be processed sequentially. After determining the target drilling data, multiple drilling data points within a preset time interval are acquired. The number of drilling data points is not limited. Optionally, drilling data can be read from N time points before and after the target drilling data point (a total of 2N+1 points) as the center. After acquiring the multiple drilling data points, the median of the multiple drilling data points is determined, and this median is used as the filtered target drilling data after median filtering. Optionally, when determining the median, the multiple drilling data points can be sorted according to their numerical values first, and then the median can be determined.
[0065] In some embodiments, the drilling data generated by the drilling environment and construction noise can be determined by using the filtered target drilling data after median filtering and the target drilling data.
[0066] refer to Figure 2 This is a schematic diagram of the pressure and filtered pressure of a drill rod during the drilling process in deep rock mass according to an embodiment of this application; wherein, the dark-colored bars represent the filtered pressure after median filtering, and the light-colored bars represent the original detected pressure. It can be seen that there are a lot of noise-induced signal fluctuations in the original signal (pressure). Median filtering can effectively filter out background noise and extract the effective pressure timing signal.
[0067] refer to Figure 3 This is a schematic diagram of the torque and filtered torque of a drill rod during drilling into deep rock, according to an embodiment of this application. The dark-colored bars represent the filtered torque after median filtering, and the light-colored bars represent the original detected torque. It can be seen that there are a lot of noise-induced signal fluctuations in the original signal (torque). Median filtering can effectively filter out background noise and extract the effective signal-to-noise ratio of the torque signal.
[0068] S103, determine the test rock strength index of the deep rock mass based on the filter torque, the filter pressure, the filter rotation speed and the filter drilling speed.
[0069] In practice, after obtaining the filtered torque, filtered pressure, filtered rotational speed, and filtered drilling speed after median filtering, the test rock strength index of the deep rock mass is determined based on these four parameters.
[0070] In some embodiments, the test rock strength index of the deep rock mass is determined by the following formula:
[0071] ;
[0072] Among them, S m (t) represents the filtering pressure, T m (t) represents the filter torque, N m (t) represents the filter rotation speed, V m (t) represents the filtered drilling speed, a m This indicates the strength index of the tested rock. t n This indicates the time point at which the parameters were acquired at the current moment.
[0073] It should be noted that, t n This indicates the time point at which the parameters were acquired at the current moment. t n+1 This indicates the parameter acquisition time point corresponding to the next moment from the current moment. Each time point is determined based on the preset drilling depth of the drill pipe. Optionally, time points t0, t1…t can be picked at equal depth intervals for each preset depth interval. n , t n+1 …The specific preset depth interval can be set as needed. Typically, a time point can be taken every 10 cm of drilling depth. The drilling depth of the drill rod is calculated based on the advance measured by the laser rangefinder and the drilling angle measured by the tilt sensor.
[0074] S104, the uniaxial compressive strength of the deep rock mass is determined based on the standard uniaxial compressive strength, the standard rock strength index, and the test rock strength index.
[0075] In practice, after obtaining the test rock strength index, the uniaxial compressive strength of the deep rock mass can be determined based on the standard uniaxial compressive strength, the standard rock strength index, and the test rock strength index. It should be noted that the standard uniaxial compressive strength corresponds to the standard rock strength index. Optionally, the standard uniaxial compressive strength and the standard rock strength index can be determined by core sampling. The process of determining the standard uniaxial compressive strength and the standard rock strength index includes: determining the standard rock strength index according to the following formula:
[0076] ;
[0077] Where a0 represents the standard rock strength index.
[0078] After determining the standard rock strength index, a core sample corresponding to the standard rock strength index is taken, and an indoor uniaxial compressive strength test is conducted using the core sample to obtain the standard uniaxial compressive strength.
[0079] In some embodiments, the uniaxial compressive strength of the deep rock mass is determined by the following formula:
[0080] ;
[0081] Among them, a m The test rock strength index is represented by a0, the standard rock strength index is represented by E0, the standard uniaxial compressive strength is represented by E, and the deep rock mass uniaxial compressive strength is represented by E.
[0082] In practice, since the test rock strength index can be obtained from drilling data, the uniaxial compressive strength of any segment of rock in a deep rock mass can be determined using the above formula.
[0083] In some embodiments, after determining the uniaxial compressive strength of the deep rock mass based on standard uniaxial compressive strength, standard rock strength index, and the test rock strength index, the method further includes:
[0084] The vibration signal of the drill rod during the drilling process into deep rock mass is obtained;
[0085] Perform a generalized S-transform on the vibration signal to obtain the spectrum of the vibration signal;
[0086] The uniaxial compressive strength of the deep rock mass is corrected based on the aforementioned spectrum.
[0087] In specific implementation, such as Figure 5 The image shows the spectrum of the drilling rig vibration signal obtained after generalized S-transformation. (Comparison) Figure 4 The time series curves of drilling speed and footage shown indicate that when the drill pipe experiences significant jumps, the vibration spectrum of the drill pipe exhibits a clear low-frequency, high-energy pattern. Figure 5 The white low-frequency part in the image can be used to detect the drilling status of the drill pipe. When a jump occurs, it may be due to the presence of stronger rocks in a local area. At this time, the torque and pressure will be affected and will be lower than the actual values. Therefore, correction is needed when calculating the rock strength.
[0088] In some embodiments, the vibration signal can be subjected to a generalized S-transform using the following formula:
[0089]
[0090]
[0091]
[0092] in, x ( t ) represents the vibration signal, and τ and t represent time. fThe table represents frequency. ω is the Gaussian window function in the generalized S-transform. σ(f) is the scaling factor of the Gaussian window function, p is the correction factor, and k is the correction parameter. To obtain better time-frequency resolution, the correction factor and parameter are incorporated into the scaling factor of the Gaussian window function. The width of the window function widens as the value of k increases and the value of p decreases. Overall, the correction factor p has a greater impact on the shape (width and height) of the window function than the correction parameter k. Generally, a wider time window can be used for lower frequencies to achieve higher frequency resolution, while a narrower time window can be used to achieve higher time resolution at higher frequencies.
[0093] In some embodiments, the uniaxial compressive strength of the deep rock mass is corrected based on the spectrum, specifically including:
[0094] The amplitude and frequency of the vibration signal are determined from the spectrum.
[0095] The correction coefficient is determined based on the amplitude and frequency, and the uniaxial compressive strength of the deep rock mass is corrected based on the correction coefficient.
[0096] The correction coefficient is determined using the following formula:
[0097]
[0098] in, f (t) represents the frequency, A(t) represents the amplitude, and max( f (t) represents the maximum frequency of the vibration signal within the preset time interval at the current moment, max(A(t)) represents the maximum amplitude of the vibration signal within the preset time interval at the current moment, and β represents the correction coefficient.
[0099] In practice, after determining the correction coefficient based on the amplitude and frequency, the test rock strength index and the standard rock strength index can be corrected using the correction coefficient. Then, the uniaxial compressive strength is recalculated based on the corrected test rock strength index and the standard rock strength index, thus completing the correction of the uniaxial compressive strength. Optionally, the corrected test rock strength index and the standard rock strength index can be obtained by multiplying the standard rock strength index and the test rock strength index by their respective correction coefficients.
[0100] The method for processing deep rock mass drilling data provided in this application acquires the torque, pressure, rotational speed, and drilling speed of the drill pipe during drilling into deep rock mass; performs median filtering on the torque, pressure, rotational speed, and drilling speed to obtain filtered torque, filtered pressure, filtered rotational speed, and filtered drilling speed; then determines the test rock strength index of the deep rock mass based on the filtered torque, filtered pressure, filtered rotational speed, and filtered drilling speed; and determines the uniaxial compressive strength of the deep rock mass based on the standard uniaxial compressive strength, standard rock strength index, and the test rock strength index. This method enables the determination of the uniaxial compressive strength of deep rock mass through drilling measurements during drilling, and the median filtering eliminates construction background noise in the drilling measurement parameters, improving the accuracy of the drilling measurement parameters and further enhancing the accuracy of the determined uniaxial compressive strength of the deep rock mass.
[0101] It should be noted that the method in this embodiment can be executed by a single device, such as a computer or server. The method can also be applied in a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the method in this embodiment, and the multiple devices will interact with each other to complete the method described.
[0102] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
[0103] Based on the same inventive concept, corresponding to any of the above embodiments, this application also provides a device for processing deep rock mass drilling data.
[0104] refer to Figure 6 The deep rock mass drilling data processing device includes:
[0105] On-site main unit 2, drill pipe 6, drill pipe base 10, and short circuit for drilling test 1;
[0106] The drilling test short circuit 1 is used to detect the torque, pressure, rotational speed and drilling speed of the drill pipe 6 during the drilling of the deep rock mass 12. The drilling test short circuit 1 is set between the drill pipe base 10 and the drill pipe 6.
[0107] The field host 2 is configured as follows:
[0108] To obtain the torque, pressure, rotational speed, and drilling speed of the drill pipe during the drilling process into deep rock;
[0109] The torque, pressure, rotational speed, and drilling speed are respectively subjected to median filtering to obtain filtered torque, filtered pressure, filtered rotational speed, and filtered drilling speed.
[0110] The test rock strength index of the deep rock mass is determined based on the filter torque, the filter pressure, the filter rotation speed, and the filter drilling speed.
[0111] The uniaxial compressive strength of the deep rock mass is determined based on the standard uniaxial compressive strength, the standard rock strength index, and the test rock strength index.
[0112] It should be noted that since the test-while-drilling short circuit is directly set between the drill pipe base and the drill pipe 6, it is possible to directly measure information such as the drill pipe's torque, pressure, vibration, footage, and rotation speed during horizontal advance drilling in deep rock masses, thereby providing data support for estimating the rock's mechanical strength.
[0113] In some embodiments, reference Figure 6 The deep rock mass drilling data processing device further includes:
[0114] The system comprises a laser rangefinder 3, a short-circuit fixing bracket 4, a drilling rig drive system 5, a drill pipe fixing device 7, an operating platform 8, a drilling rig power system 9, and drilling rig tracks 11. Optionally, the drilling test short-circuit 1 is wirelessly connected to the field host 2 via Bluetooth. The short-circuit fixing bracket 4 is connected to the drilling rig drive system 5 via a bracket to prevent the drilling test short-circuit 1 from rotating with the drill pipe 6. The drilling rig drive system 5 typically provides feed or pull force to the power head via a sprocket or chain mechanism. Optionally, the drill pipe 6 can be any geological drill pipe, and the drill bit type is unrestricted. Its diameter can be designed according to specific engineering requirements, and the connection dimensions of the drilling test short-circuit female head can be adjusted accordingly. The drill pipe fixing device 7 is typically a vise for horizontal directional drilling. Taking a hydraulic drilling rig as an example, under the action of the hydraulic cylinder of the drilling rig power system 9, relative rotation is generated between the drill pipe base 10 and the vise, allowing for the installation and removal of the drill pipe through front-to-back coordination. The drill pipe base 10 includes a male head structure connected to the drilling test short-circuit. The drilling rig tracks 5 provide the drilling rig with mobility. The deep rock mass 12 to be tested is usually the environment of deep underground engineering projects such as deep tunnels, deep mines, deep underground caverns, factories, and laboratories. Deep rock masses are usually characterized by large burial depth, high initial stress, high temperature, large deformation, and easy cakeing of core samples taken from boreholes.
[0115] In specific implementation, when collecting and processing drilling parameters using the deep rock mass drilling data processing device, refer to... Figure 6 The drilling rig is driven by the crawler track 11 to the deep rock mass 12 to be tested. The drill rod 6 is unloaded from the drill rod base 10, and the test-while-drilling connector 1 is installed on the drill rod base 10. The drill rod 6 is then installed at the other end of the test-while-drilling connector 1. A section of the borehole close to the deep rock mass is erected by the drill rod fixing device 7. The test-while-drilling connector 1 is fixed in place by the connector fixing bracket 4 so that it does not rotate with the drill rod 6. The field host 2 is placed on the operating platform 8, and the laser rangefinder 3 is connected to the field host 2 through a communication cable. The laser of the laser rangefinder is aligned with the laser ranging baffle at the upper end of the assembled test-while-drilling connector 1, and the distance d between the connector and the laser rangefinder is recorded in real time. The drill rod inclination angle θ and distance d recorded by the inclination sensor on the test-while-drilling connector can be monitored in real time for the drill rod 6's advance. The drilling speed of the drill rod 6 can be obtained by using this advance and the time it takes for the drill rod to penetrate the deep rock mass. When the drill pipe is drilling into deep rock, the drill pipe transmission system 5 is controlled by the drilling rig power system 9 to start drilling, and drilling data (torque, pressure, footage, rotational speed, vibration signal, and inclination angle, etc.) are collected synchronously on the on-site main unit. Optionally, data collection can be stopped during drill pipe changes, and data collection can be performed only during drilling.
[0116] In some embodiments, reference Figure 7 and Figure 8 The drilling test short circuit includes a torque-pressure composite sensor 1.1, an acceleration sensor 1.2, a tilt sensor 1.3, a speed sensor 1.4, a short circuit bearing 1.5, a laser rangefinder baffle 1.6, a short circuit male connector 1.9, and a short circuit female connector 1.10; the short circuit male connector 1.9 is connected to the female connector of the drill pipe base, and the short circuit female connector 1.10 is connected to the male connector of the drill pipe. (Reference) Figure 6 The male connector of the test-while-drilling (SWD) short connector 1 is connected to the female connector of the drill pipe base 10. The female connector of the test-while-drilling (SWD) short connector 1 is connected to the male connector of the drill pipe 6.
[0117] In some embodiments, reference Figure 7 The drilling test short circuit also includes a data acquisition circuit module 1.7, a self-powered module 1.8, a wireless transmission module 1.11, and a data storage module 1.12.
[0118] In some embodiments, reference Figure 8The torque-pressure composite sensor 1.1 integrates torque and pressure detection into a single unit, enabling the detection of both shaft parameters with a single sensor, resulting in more accurate and reliable data. Currently, torque and pressure are measured separately. However, if the mechanical structure of the bearing being measured dictates that the shaft simultaneously bears both torque and pressure loads, and pressure sensors typically use strain gauges, the pressure load can interfere with torque measurement, leading to significant errors. The torque-pressure composite sensor effectively overcomes these shortcomings. Torque and pressure are measured using strain gauge electrical measurement technology. A strain bridge is constructed on the bearing, and power is supplied to the strain bridge to measure the electrical signal of the bearing under torsion. This strain signal is amplified and converted into a frequency signal proportional to the torsional strain through a voltage-to-frequency converter. The signal output waveform can be arbitrarily selected—square wave or pulse wave. This torque-pressure composite sensor offers high detection accuracy, good stability, strong anti-interference capabilities, and continuous measurement of both positive and negative torques without repeated zeroing. It can measure both static and dynamic torque.
[0119] In some embodiments, reference Figure 7 Accelerometer 1.2 is fixed outside the torque-pressure composite sensor housing and is used to monitor the vibration state of the drill rod during drilling. The accelerometer employs the piezoelectric effect principle and is a piezoelectric accelerometer with integrated circuit and external signal conditioning. This integrated circuit is powered by a constant current source 1.8, which has an adjustable output voltage to adapt to impedance changes. The accelerometer signal is amplified by a micro-integrated circuit amplifier. A high-resistance and high-capacitance high-pass filter is used to remove low-frequency interference caused by ambient temperature and base deformation. The electrical signal is then transferred to the accelerometer via an operational amplifier and output through a well-shielded coaxial cable.
[0120] In some embodiments, reference Figure 7 The tilt sensor 1.3 uses an electronic compass consisting of a triaxial magnetic sensor, a built-in heading angle calculation and a ferromagnetic calibration circuit. Optionally, the compass can be fixedly installed at the bottom of the torque-pressure composite sensor housing, keeping it parallel to the axis of the short-circuit bearing 1.5, to obtain the three-dimensional angle of the drill pipe drilling direction in real time.
[0121] In some embodiments, reference Figure 8 The speed sensor 1.4 uses a photoelectric speed sensor, which is an angular displacement sensor. It consists of a slotted disk mounted on a short-circuit bearing, a light source, a photoelectric device, and an indicating slotted disk. It has advantages such as non-contact operation, high precision, high resolution, high reliability, and fast response.
[0122] In some embodiments, the acquisition circuit module specifically includes signal amplification circuits for four sensors, an A / D conversion circuit, and a microcontroller. Optionally, the acquisition circuit, sensors, data storage, and wireless transmission module are all powered by a self-powered module.
[0123] In some embodiments, reference Figure 6 The field host 2 is located on the control panel 8 of the drilling rig. The field host 2 specifically includes a central processing unit, a wireless receiving module, a data storage module, a laser ranging module, and a self-powered module. The field host 2 is interconnected with the drilling test short circuit 1 via Bluetooth technology through a wireless communication module. It is also connected to the laser rangefinder 3, which is also located on the control panel 8, through the laser ranging module.
[0124] The deep rock mass drilling data processing device provided in this application, compared to traditional indirect hydraulic pressure monitoring methods, directly measures the torque, pressure, rotational speed, and drilling footage of the drill pipe during drilling. Direct measurement is more accurate and has a clearer physical meaning than indirect measurement. Simultaneously, compared to traditional indirect hydraulic pressure monitoring methods, the drilling data processing device measures the vibration state of the drill pipe. Because the rock mass in deep underground engineering is harder and prone to problems such as drill skipping, it is necessary to monitor the vibration of the drill pipe to identify skipping and stuck drill situations, thereby correcting data such as effective drilling footage, torque, and pressure. Furthermore, compared to traditional indirect hydraulic pressure monitoring methods, the drilling data processing device has the characteristics of a prefabricated component, making it suitable not only for hydraulic drilling rigs but also for pneumatic impact drilling rigs, and applicable to various drill pipe types (coring or non-coring). The prefabricated component is easy to install and does not affect normal drilling. In addition, the deep rock mass drilling data processing device provided in this application communicates with the on-site host data via Bluetooth through a short circuit during drilling testing, and uses laser wireless ranging to measure the drill pipe advance. This enables wireless acquisition of the entire set of deep rock mass drilling data. In deep underground engineering with complex construction environments, wireless measurement ensures the safety and convenience of drilling.
[0125] For ease of description, the above devices are described in terms of function, divided into various modules. Of course, in implementing this application, the functions of each module can be implemented in one or more software and / or hardware.
[0126] The apparatus described above is used to implement the corresponding deep rock mass drilling data processing method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.
[0127] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the method for processing deep rock mass drilling data as described in any of the above embodiments.
[0128] Figure 9 This embodiment illustrates a more specific hardware structure of an electronic device. The device may include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, memory 1020, input / output interface 1030, and communication interface 1040 are interconnected internally via the bus 1050.
[0129] The processor 1010 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.
[0130] The memory 1020 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program code is stored in the memory 1020 and is called and executed by the processor 1010.
[0131] The input / output interface 1030 is used to connect input / output modules to realize information input and output. Input / output modules can be configured as components within the device (not shown in the figure) or externally connected to the device to provide corresponding functions. Input devices may include keyboards, mice, touchscreens, microphones, various sensors, etc., while output devices may include displays, speakers, vibrators, indicator lights, etc.
[0132] The communication interface 1040 is used to connect a communication module (not shown in the figure) to enable communication between this device and other devices. The communication module can communicate via wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).
[0133] Bus 1050 includes a pathway for transmitting information between various components of the device, such as processor 1010, memory 1020, input / output interface 1030, and communication interface 1040.
[0134] It should be noted that although the above-described device only shows the processor 1010, memory 1020, input / output interface 1030, communication interface 1040, and bus 1050, in specific implementations, the device may also include other components necessary for normal operation. Furthermore, those skilled in the art will understand that the above-described device may only include the components necessary for implementing the embodiments of this specification, and not necessarily all the components shown in the figures.
[0135] The electronic devices described above are used to implement the corresponding deep rock mass drilling data processing methods in any of the foregoing embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.
[0136] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also provides a non-transitory computer-readable storage medium that stores computer instructions for causing the computer to execute the deep rock mass drilling data processing method as described in any of the above embodiments.
[0137] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.
[0138] The computer instructions stored in the storage medium of the above embodiments are used to cause the computer to execute the deep rock mass drilling data processing method as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.
[0139] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.
[0140] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application can be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.
[0141] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.
[0142] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.
Claims
1. A method for processing drilling data in deep rock masses, characterized in that, include: To obtain the torque, pressure, rotational speed, and drilling speed of the drill pipe during the drilling process into deep rock; The torque, pressure, rotational speed, and drilling speed are respectively subjected to median filtering to obtain filtered torque, filtered pressure, filtered rotational speed, and filtered drilling speed. The test rock strength index of the deep rock mass is determined based on the filter torque, the filter pressure, the filter rotation speed, and the filter drilling speed. The uniaxial compressive strength of the deep rock mass is determined based on the standard uniaxial compressive strength, the standard rock strength index, and the test rock strength index.
2. The method according to claim 1, characterized in that, The torque, pressure, rotational speed, and drilling speed are each subjected to median filtering, specifically including: Determine the target drilling data; the target drilling data is any one of the torque, the pressure, the rotational speed, and the drilling speed; Acquire multiple drilling data points of the target drilling data within a preset time interval, and determine the median of the multiple drilling data points; The median is used as the target of the median-filtered drilling data.
3. The method according to claim 1, characterized in that, The test rock strength index of the deep rock mass is determined by the following formula: ； in, This indicates the filtering pressure. This indicates the filtered torque. This indicates the filter rotation speed. This indicates the filtered drilling speed. This indicates the strength index of the tested rock. This indicates the time point at which the parameters were acquired at the current moment.
4. The method according to claim 1, characterized in that, The uniaxial compressive strength of the deep rock mass is determined by the following formula: ； in, This indicates the strength index of the tested rock. E represents the standard rock strength index, E0 represents the standard uniaxial compressive strength, and E represents the uniaxial compressive strength of the deep rock mass.
5. The method according to claim 1, characterized in that, After determining the uniaxial compressive strength of the deep rock mass based on the standard uniaxial compressive strength, the standard rock strength index, and the tested rock strength index, the method further includes: The vibration signal of the drill rod during the drilling process into deep rock mass is obtained; Perform a generalized S-transform on the vibration signal to obtain the spectrum of the vibration signal; The uniaxial compressive strength of the deep rock mass is corrected based on the aforementioned spectrum.
6. The method according to claim 5, characterized in that, The uniaxial compressive strength of the deep rock mass is corrected based on the aforementioned spectrum, specifically including: The amplitude and frequency of the vibration signal are determined from the spectrum. The correction coefficient is determined based on the amplitude and frequency, and the uniaxial compressive strength of the deep rock mass is corrected based on the correction coefficient. The correction coefficient is determined using the following formula: in, f (t) represents the frequency, A(t) represents the amplitude, and max( f (t) represents the maximum frequency of the vibration signal within the preset time interval at the current moment, max(A(t)) represents the maximum amplitude of the vibration signal within the preset time interval at the current moment, and β represents the correction coefficient.
7. A device for processing data from deep rock mass drilling, characterized in that, include: On-site main unit, drill pipe, drill pipe base, and short-circuit test during drilling; The test-while-drilling (SWD) short circuit is used to detect the torque, pressure, rotational speed, and drilling speed of the drill pipe during the drilling process into deep rock. The SWD short circuit is located between the drill pipe base and the drill pipe. The field host is configured as follows: To obtain the torque, pressure, rotational speed, and drilling speed of the drill pipe during the drilling process into deep rock; The torque, pressure, rotational speed, and drilling speed are respectively subjected to median filtering to obtain filtered torque, filtered pressure, filtered rotational speed, and filtered drilling speed. The test rock strength index of the deep rock mass is determined based on the filter torque, the filter pressure, the filter rotation speed, and the filter drilling speed. The uniaxial compressive strength of the deep rock mass is determined based on the standard uniaxial compressive strength, the standard rock strength index, and the test rock strength index.
8. The apparatus according to claim 7, characterized in that, The test-while-drilling connector includes a torque-pressure composite sensor, an acceleration sensor, an inclination sensor, a rotational speed sensor, a connector bearing, a laser ranging baffle, a male connector, and a female connector. The male connector is connected to the female connector of the drill pipe base, and the female connector is connected to the male connector of the drill pipe.
9. An electronic device, characterized in that, The method includes a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor, when executing the program, implements the method as described in any one of claims 1 to 6.
10. A non-transitory computer-readable storage medium, characterized in that, The non-transitory computer-readable storage medium stores computer instructions for causing a computer to perform the method according to any one of claims 1 to 6.