Rock mass quality index determination method and device
By obtaining the parameters of the target drilling tool and the standard drilling tool, and performing correction formula calculations, the problem of inaccurate rock quality evaluation in small-diameter drilling tool exploration was solved, and a more accurate rock quality grade evaluation was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- STATE GRID BEIJING ELECTRIC POWER CO
- Filing Date
- 2025-11-27
- Publication Date
- 2026-04-17
AI Technical Summary
Because the small-diameter drilling tools used in the exploration process could not meet the prerequisites of RQD, the rock quality evaluation results were incorrect, affecting the accuracy of the rock quality evaluation.
By obtaining the parameters of the target drilling tool and the standard drilling tool, correction formulas are calculated, including corrections for diameter ratio and rock hardness, to determine the quality standard correction parameters, and then the rock quality index is calculated.
It improves the accuracy of rock quality evaluation, enabling more accurate evaluation of rock quality grades based on actual exploration conditions.
Smart Images
Figure CN121878166A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of data processing technology, specifically to a method and apparatus for determining rock mass quality indicators. Background Technology
[0002] RQD (Rock Quality Designation) is a rock quality index that primarily assesses rock quality based on the integrity of the rock core. Commonly used geotechnical codes define the rock quality index as follows: when drilling into rock with a 75mm diameter diamond drill bit (typically 53mm borehole diameter) and double-layer core tubing, and continuously core sampling, the percentage of core lengths greater than 10cm (or a specific standard length) in each drilling run, relative to the total footage advanced in that run.
[0003] The use of the RQD quantitative indicator is subject to strict regulations. For example, it is applicable to conventional drilling rigs with an inner diameter of ≥54mm (such as NW specification), and the standard length threshold is 10cm. However, other drilling tools (such as small-diameter backpack drills) may be used during exploration, which may not meet the prerequisites for RQD, leading to incorrect results and affecting the rock quality assessment. Summary of the Invention
[0004] The purpose of this application is to provide a method and apparatus for determining rock mass quality indicators, so as to at least solve the technical problem in the related art that when rock quality is evaluated by rock quality index method, the preconditions of RQD cannot be strictly met, resulting in incorrect calculation results of rock quality indicators and affecting rock quality evaluation.
[0005] To address the aforementioned technical problems, this application provides a method for determining rock mass quality indicators, comprising:
[0006] Obtain the target drill string parameters for the target drill string used to explore the target rock;
[0007] Obtain quality standard parameters and standard drill string parameters;
[0008] The quality standard parameters are corrected based on the target drilling tool parameters and the standard drilling tool parameters to obtain the quality standard correction parameters;
[0009] The rock quality index of the target rock is determined based on the quality standard correction parameters.
[0010] In some embodiments, the target drill string parameters include the diameter of the target drill string, the quality standard parameters include the standard length, and the standard drill string parameters include the diameter of the standard drill string.
[0011] The quality standard parameters are corrected based on the target drill string parameters and the standard drill string parameters to obtain the quality standard correction parameters, including:
[0012] The standard length is corrected based on the diameter of the target drill bit and the diameter of the standard drill bit to obtain the standard corrected length;
[0013] The correction formula for the standard length is:
[0014] L 修正 =L 标准 (d / d 标准 ) 3 / 2 ;
[0015] Where d is the diameter of the target drill bit, d 标准 L is the diameter of a standard drill bit. 标准 This is the standard length.
[0016] In some embodiments, the method further includes:
[0017] The standard length is corrected based on the rock hardness of the target rock;
[0018] Wherein, if the target rock is soft rock, the standard length is reduced; if the target rock is hard rock, the standard length is increased.
[0019] In some embodiments, the method further includes:
[0020] The standard length is corrected based on the rock mass wave velocity and / or compressive strength of the target rock.
[0021] In some embodiments, the method further includes:
[0022] Determine whether the diameter deviation between the target drill string and the standard drill string is greater than a preset threshold.
[0023] If so, the standard length shall be corrected.
[0024] In some embodiments, the method further includes:
[0025] Multiple quality standard parameters are determined based on the length of the rock core extracted by the target drill bit, wherein the multiple quality standard parameters have the same properties;
[0026] The rock quality index of the target rock is determined in segments based on multiple quality standard parameters.
[0027] In some embodiments, the target drill string parameters further include drill bit type and core tube type, wherein the drill bit type includes at least one of carbide drill bit, tungsten carbide drill bit and diamond drill bit, and the core tube type includes at least one of double-layer single-action core tube, double-layer double-action core tube and single-layer single-action core tube.
[0028] This application also provides a device for determining rock mass quality indicators, including:
[0029] The first acquisition module is configured to acquire target drill parameters for the target drill used to explore the target rock.
[0030] The second acquisition module is configured to acquire quality standard parameters and standard drill string parameters;
[0031] The correction module is configured to correct the quality standard parameters based on the target drilling tool parameters and the standard drilling tool parameters to obtain quality standard correction parameters;
[0032] The rock quality evaluation module is configured to determine the rock quality index of the target rock based on the quality standard correction parameters.
[0033] In some embodiments, the target drill string parameters include the diameter of the target drill string, the quality standard parameters include the standard length, the standard drill string parameters include the diameter of the standard drill string, and the correction module is further configured to:
[0034] The standard length is corrected based on the diameter of the target drill bit and the diameter of the standard drill bit to obtain the standard corrected length;
[0035] The correction formula for the standard length is:
[0036] L 修正 =L 标准 (d / d 标准 ) 3 / 2 ;
[0037] Where d is the diameter of the target drill bit, d 标准 L is the diameter of a standard drill bit. 标准 This is the standard length.
[0038] In some embodiments, the correction module is further configured to:
[0039] The standard length is corrected based on the rock hardness of the target rock;
[0040] Wherein, if the target rock is soft rock, the standard length is reduced; if the target rock is hard rock, the standard length is increased.
[0041] The rock mass quality index determination method and apparatus provided in this application embodiment obtains the target drill string parameters of the target drill string used for rock exploration; obtains quality standard parameters and standard drill string parameters; corrects the quality standard parameters according to the target drill string parameters and the standard drill string parameters to obtain quality standard correction parameters; and determines the rock quality index of the target rock according to the quality standard correction parameters. This method can correct the quality standard parameters used for rock quality evaluation based on the target drill string parameters of the target drill string used for rock exploration and the standard drill string parameters of the standard drill string used for rock quality evaluation, resulting in more accurate rock quality indexes and accurate evaluation of the quality grade of the explored rock. Attached Figure Description
[0042] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0043] Figure 1 This is a flowchart of a method for determining rock mass quality indicators according to an embodiment of this application;
[0044] Figure 2 This is another flowchart of the method for determining rock mass quality indicators according to an embodiment of this application;
[0045] Figure 3 This is another flowchart of the method for determining rock mass quality indicators according to an embodiment of this application;
[0046] Figure 4 This is a schematic diagram of the rock mass quality index determination device according to an embodiment of this application. Detailed Implementation
[0047] Various embodiments and features of this application are described herein with reference to the accompanying drawings.
[0048] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this application will be apparent to those skilled in the art.
[0049] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.
[0050] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.
[0051] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.
[0052] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.
[0053] Specific embodiments of this application are described thereafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in a variety of substantially any suitable detailed structures.
[0054] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.
[0055] RQD, also known as "Modified Core Recovery Rate," is derived from the core recovery rate. This index is widely used in rock mass quality classification, engineering stability analysis, and geotechnical engineering design. Based on the RQD value, rock masses are classified into five grades, from very poor to very good. Very poor grade (RQD < 10%) indicates extremely broken rock with almost no intact core segments; Poor grade (10% ≤ RQD < 25%) indicates relatively broken rock, but occasionally with short, relatively intact core segments; Average grade (25% ≤ RQD < 50%) indicates moderate rock quality with some integrity, but still many broken parts; Good grade (50% ≤ RQD < 75%) indicates relatively good rock quality, with most core segments being long and intact; and Very good grade (RQD ≥ 75%) indicates extremely good rock quality, with almost all core segments being intact and long.
[0056] The "Engineering Rock Mass Classification Standard" clearly states that the RQD value can be used as a quantitative indicator of the integrity of rock mass. However, the prerequisites for using RQD are quite strict. When calculating RQD, core sampling and measurement should be carried out strictly in accordance with the prescribed standards. The prerequisites for using RQD include: (1) the borehole diameter should be not less than 50 mm to obtain rock cores; (2) double-layer single-movement core tubes should be used for core sampling.
[0057] As shown above, RQD is mainly applicable to core samples obtained using large-diameter drilling tools such as big-head drills. In recent years, small-diameter backpack drills (core diameter of 20.5 mm) have become increasingly popular in mountainous explorations due to their portability, low cost, and strong adaptability to complex terrain. Because the core diameter is significantly reduced, the calculated RQD value tends to approach zero when using traditional RQD evaluation indicators, leading to a severe underestimation of rock mass quality in hard rocks. The essence of this contradiction stems from the size effect of the core during drilling and post-processing—the core's bending strength, fracture mode, and block size distribution all systematically shift with diameter changes. For example, small-diameter cores (such as 20 mm) are more prone to fracture, resulting in a systematically low RQD value.
[0058] In view of this, the present application provides a method and apparatus for determining rock mass quality indicators, in order to solve the technical problem in the related art that when rock quality is evaluated by the rock quality indicator method, the preconditions of RQD cannot be strictly met, resulting in incorrect calculation results of rock quality indicators and affecting the rock quality evaluation.
[0059] Example 1
[0060] Figure 1 A flowchart illustrating a method for determining rock mass quality indicators according to an embodiment of this application is shown. Figure 1 As shown in the embodiment of this application, a method for determining rock mass quality indicators is provided, including:
[0061] S101: Obtain the target drill parameters for the target drill used to explore the target rock.
[0062] The target drill string parameters may include drill string type (e.g., large drill or backpack drill), drill string size (e.g., diameter), drill bit type, and core tube type. The drill bit type includes at least one of carbide drill bit, tungsten carbide drill bit, and diamond drill bit. The core tube type includes at least one of double-layer single-action core tube, double-layer double-action core tube, and single-layer single-action core tube.
[0063] Since the diameter of the obtained rock core affects the calculation of the RQD value, in this embodiment, the target drill string parameters are evaluated based on the diameter of the target drill string to assess the rock mass quality grade. Specifically, a backpack drill can be used to drill and core the target rock. Backpack drills are small in size, lightweight, and easy to carry. The diameter of a backpack drill is relatively small, for example, 20.5 mm.
[0064] S102: Obtain quality standard parameters and standard drill string parameters.
[0065] In this step, the quality standard parameters and standard drill string parameters for evaluating the target rock quality are determined. When evaluating rock quality using the Responsive Quality Determination (RQD) index, the RQD value is determined by statistically analyzing the proportion of intact rock cores exceeding the standard length (e.g., 10 cm) in the borehole after core drilling using a standard drill string with an inner diameter ≥ 54 mm. This comprehensively reflects the strength and degree of fragmentation of the rock mass.
[0066] The formula for calculating quality evaluation indicators can be expressed as:
[0067] RQD=(L P / L f )×100%,
[0068] Among them, L P L represents the total length of the complete rock core. f This indicates the total length of the borehole.
[0069] For example, using a large drill to advance 1 meter in a single run, five rock samples were extracted, with lengths of 12cm, 8cm, 25cm, 30cm, and 9cm respectively. P = (12+25+30)cm.
[0070] In this embodiment, the quality standard parameter in the rock quality evaluation formula can be determined to be the standard length, which is used to calculate L. P The standard length is predetermined, for example, 100mm; the standard drill bit parameter is the diameter of the standard drill bit, which is also predetermined, for example, 54mm.
[0071] S103: Correct the quality standard parameters according to the target drilling tool parameters and the standard drilling tool parameters to obtain the quality standard correction parameters.
[0072] After determining the quality standard parameters and the standard drill string parameters of the standard drill string, since there is a certain deviation between the target drill string used for specific exploration and the drill string parameters of the standard drill string used for quality evaluation, if the above quality standard parameters are still used to evaluate the explored rock, incorrect calculation results may be obtained. Therefore, in this step, the quality standard parameters are corrected according to the drill string parameter deviation between the target drill string parameters and the standard drill string parameters to obtain the quality standard correction parameters.
[0073] S104: Determine the rock quality index of the target rock according to the quality standard correction parameters.
[0074] Once the quality standard correction parameters are obtained, the rock quality index of the target rock can be calculated using these parameters, and then the quality grade of the rock explored by the target drill bit can be evaluated based on the calculated rock quality index.
[0075] This application provides a method for determining rock mass quality indicators. The method involves obtaining target drill string parameters for a target drill string used to explore a target rock; obtaining quality standard parameters and standard drill string parameters; correcting the quality standard parameters based on the target drill string parameters and the standard drill string parameters to obtain corrected quality standard parameters; and determining the rock quality indicators of the target rock based on the corrected quality standard parameters. This method allows for the correction of the quality standard parameters used for rock quality evaluation based on the target drill string parameters used for rock exploration and the standard drill string parameters used for rock quality evaluation, resulting in more accurate rock quality indicators and a more accurate evaluation of the quality grade of the explored rock.
[0076] In some embodiments, in step S103, the quality standard parameters are corrected according to the target drill string parameters and the standard drill string parameters to obtain quality standard correction parameters, including:
[0077] S1031: The standard length is corrected according to the diameter of the target drill bit and the diameter of the standard drill bit to obtain the standard corrected length;
[0078] The correction formula for the standard length is:
[0079] L 修正 =L 标准 (d / d 标准 ) 3 / 2 ;
[0080] Where d is the diameter of the target drill bit, d 标准 L is the diameter of a standard drill bit. 标准 This is the standard length.
[0081] After determining the standard length and standard drill string diameter in the calculation formula of the quality evaluation index, the standard length can be modified according to the diameter of the target drill string used in the actual exploration to obtain the standard modified length.
[0082] The core diameter can be determined by the critical fracture length (L). c ∝d 3 / 2 The diameter of the core affects the length of the extracted core. Smaller diameter cores are more prone to breakage. If the standard length in the quality evaluation index calculation formula is larger, the calculated ROD value may be smaller. In other words, the core diameter can affect the threshold of the standard length in the quality evaluation index calculation formula. Therefore, in this step, the threshold of the standard length can be corrected according to the diameter of the target drill string to obtain a more accurate total length L of the complete core. P This allows for an accurate evaluation of rock quality.
[0083] For example, L标准 For 100mm, d 标准 The length is 54mm. The standard correction length, calculated using the correction formula, is: L. 修正 =L 标准 (d / d 标准 ) 3 / 2 =100×(20.5 / 54) 3 / 2 =23.3mm.
[0084] In some embodiments, the method further includes:
[0085] S201: The standard length is corrected according to the rock hardness of the target rock;
[0086] Wherein, if the target rock is soft rock, the standard length is reduced; if the target rock is hard rock, the standard length is increased.
[0087] Considering that rock hardness also affects the length of the broken core sample, the standard length can be adjusted according to the rock hardness. When the rock hardness is high, i.e., hard rock, the core sample is not easily broken, so the standard length can be set larger, for example, 30 mm; when the rock hardness is low, i.e., soft rock, the core sample is easily broken, so the standard length can be set smaller, for example, 20 mm. Hard rock is defined as rock with a saturated uniaxial compressive strength greater than or equal to 30 MPa, and soft rock is defined as rock with a saturated uniaxial compressive strength less than 30 MPa.
[0088] In some embodiments, the method further includes:
[0089] S301: The standard length is corrected according to the rock mass wave velocity and / or compressive strength of the target rock.
[0090] Considering that the core diameter is related to the bending strength (M) max ∝d 3 The diameter of the core sample can also affect the length of the extracted core, which in turn affects the standard length in the calculation formula of the quality evaluation index. Therefore, in this embodiment, the standard length can be corrected according to the relationship between the core diameter and the bending strength. In specific implementation, the rock mass wave velocity (usually referring to the longitudinal wave velocity) of the target rock can also be considered, and the standard length can be corrected according to the rock mass wave velocity.
[0091] In some embodiments, such as Figure 2 As shown, the method further includes:
[0092] S401: Determine whether the diameter deviation between the target drill bit and the standard drill bit is greater than a preset threshold.
[0093] S402: If so, the standard length is corrected.
[0094] After obtaining the diameter of the target drill bit and the diameter of the standard drill bit, it is determined whether the difference between the two diameters exceeds a preset threshold. If it does, it is determined that the difference between the two diameters is large, which may affect the calculation results of rock quality indicators, and the standard length needs to be corrected. If it does not exceed the threshold, it is determined that the difference between the two diameters is small, and there is no need to correct the standard length, thus improving the calculation efficiency of rock quality indicators.
[0095] In some embodiments, such as Figure 3 As shown, the method further includes:
[0096] S501: Determine multiple quality standard parameters based on the length of the core extracted by the target drill bit, wherein the multiple quality standard parameters have the same properties;
[0097] S502: Determine the rock quality index of the target rock in segments based on multiple quality standard parameters.
[0098] RQD categorizes core integrity into two levels: greater than 10cm and less than 10cm. Simply accumulating cores longer than 10cm is insufficient to accurately reflect the actual integrity of the rock mass. For example, cores with the same RQD value may have different integrity levels. One part might contain multiple 10cm-20cm segments, while another part might consist of a single core longer than 50cm. Although their RQD values are the same, their integrity differs significantly, and the RQD value cannot accurately assess the rock quality grade.
[0099] Therefore, in this step, when the lengths of the extracted core segments vary significantly, multiple standard lengths can be set. The RQD value of the core is calculated for each segment based on these standard lengths. Then, the RQD values are weighted to obtain the final RQD value, allowing for an accurate evaluation of the rock quality. For example, three standard lengths can be set: 10cm, 20cm, and 50cm. Then, the core recovery rates for complete core segments with lengths of 10cm–20cm, 20cm–50cm, and greater than 50cm are obtained. The RQD values for each length segment are then calculated and weighted.
[0100] In the above embodiments, the standard length in the rock quality evaluation index calculation formula is modified. When calculating RQD, since factors such as borehole depth can also affect the RQD value, in specific implementations, the quality standard parameter can also be the borehole depth.
[0101] In addition, compared with the use of standard diamond drill bits and standard core tubes, there are certain differences in core recovery rate, core wear, and mechanical breakage when using non-diamond drill bits and other types of core tubes for coring. Therefore, the quality standard parameters can be modified according to the drill bit type and core tube type.
[0102] For example, in standard drill string parameters, the standard drill string type is a standard diamond drill bit, and the standard drill string core tube type is a double-layer single-action core tube. When the target drill string for the target rock is a non-diamond drill bit such as a carbide drill bit or a tungsten carbide drill bit, the above standard length is corrected based on the deviation in core recovery rate between non-diamond drill bits and diamond drill bits; however, no correction is needed when the target drill string for the target rock is a diamond drill bit. When the core tube used by the target drill string for the target rock is a double-layer double-action core tube or a single-layer single-action core tube, the above standard length can be corrected based on the deviation in core recovery rate between double-layer single-action core tubes and double-layer double-action core tubes or single-layer single-action core tubes; however, no correction is needed when the core tube used by the target drill string for the target rock is a double-layer single-action core tube.
[0103] Furthermore, in the embodiments of this application, multiple target drill parameters and multiple standard drill parameters can be comprehensively considered to modify the standard length, drilling depth, etc. in the rock quality grade evaluation, so as to obtain more accurate and reliable rock quality evaluation indicators.
[0104] The method for determining rock mass quality indicators provided in this application will be described in detail below using specific embodiments as examples. This application analyzes actual drilled rock cores and performs statistical analysis according to different standard lengths. The statistically calculated RQD values are shown in Table 1.
[0105] Table 1 RQD Value Calculation Table
[0106]
[0107] As shown in Table 1, the above statistics indicate that when using a standard length of 100mm to calculate the RQD value with a backpack drill, the calculated RQD value is much smaller (35.20%, 54.20%, 43.00%). When the standard length used for hard rock is 30mm and the drilling depth is full hole, the calculated RQD value of 0.620 is basically the same as the RQD value of 0.635 calculated using a traditional large drill, which can reflect the rock quality grade of the target rock.
[0108] Example 2
[0109] Figure 4 This is a schematic diagram of the rock mass quality index determination device according to an embodiment of this application. Figure 4As shown in the figure, this application provides a device for determining rock mass quality indicators, including:
[0110] The first acquisition module 10 is configured to acquire target drill parameters for the target drill used to explore the target rock.
[0111] The second acquisition module 20 is configured to acquire quality standard parameters and standard drill string parameters;
[0112] The correction module 30 is configured to correct the quality standard parameters based on the target drill string parameters and the standard drill string parameters to obtain quality standard correction parameters;
[0113] The rock quality evaluation module 40 is configured to determine the rock quality index of the target rock based on the quality standard correction parameters.
[0114] In some embodiments, the target drill string parameters include the diameter of the target drill string, the quality standard parameters include the standard length, the standard drill string parameters include the diameter of the standard drill string, and the correction module 30 is further configured to:
[0115] The standard length is corrected based on the diameter of the target drill bit and the diameter of the standard drill bit to obtain the standard corrected length;
[0116] The correction formula for the standard length is:
[0117] L 修正 =L 标准 (d / d 标准 ) 3 / 2 ;
[0118] Where d is the diameter of the target drill bit, d 标准 L is the diameter of a standard drill bit. 标准 This is the standard length.
[0119] In some embodiments, the correction module 30 is further configured to:
[0120] The standard length is corrected based on the rock hardness of the target rock;
[0121] Wherein, if the target rock is soft rock, the standard length is reduced; if the target rock is hard rock, the standard length is increased.
[0122] In some embodiments, the correction module 30 is further configured to:
[0123] The standard length is corrected based on the rock mass wave velocity and / or compressive strength of the target rock.
[0124] In some embodiments, the correction module 30 is further configured to:
[0125] Determine whether the diameter deviation between the target drill string and the standard drill string is greater than a preset threshold.
[0126] If so, the standard length shall be corrected.
[0127] In some embodiments, the rock quality evaluation module 40 is further configured to:
[0128] Multiple quality standard parameters are determined based on the length of the rock core extracted by the target drill bit, wherein the multiple quality standard parameters have the same properties;
[0129] The rock quality index of the target rock is determined in segments based on multiple quality standard parameters.
[0130] The rock mass quality index determination device provided in this application corresponds to the rock mass quality index determination method in the above embodiments. Any option in the rock mass quality index determination method embodiments is also applicable to the rock mass quality index determination device embodiments, and will not be repeated here.
[0131] Example 3
[0132] This application also provides an electronic device, which includes at least a memory and a processor. The memory stores a computer program, and the processor executes the computer program in the memory to implement the above-described method for determining rock mass quality indicators.
[0133] In some embodiments, the processor executing a computer program may be a processing device that includes one or more general-purpose processing devices, such as a microprocessor, a central processing unit (CPU), a graphics processing unit (GPU), etc. More specifically, the processor may be a complex instruction set computing (CISC) microprocessor, a reduced instruction set computing (RISC) microprocessor, a very long instruction word (VLIW) microprocessor, a processor that runs other instruction sets, or a processor that runs a combination of instruction sets. The processor may also be one or more special-purpose processing devices, such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), digital signal processors (DSPs), system-on-a-chip (SoCs), etc.
[0134] The memory may be a read-only memory (ROM), random access memory (RAM), phase-change random access memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), electrically erasable programmable read-only memory (EEPROM), other types of random access memory (RAM), flash drives or other forms of flash memory, cache, registers, static memory, optical disc read-only memory (CD-ROM), digital versatile optical disc (DVD) or other optical storage, magnetic tape cassette or other magnetic storage devices, or any other possible non-transitory medium used to store information or instructions that can be accessed by computer equipment.
[0135] The electronic devices in this application embodiment may include, but are not limited to, fixed terminal devices such as servers, desktop computers, and digital TVs, as well as mobile terminal devices such as in-vehicle devices (e.g., head-up displays), handheld devices (e.g., mobile phones, tablets, etc.), and wearable devices (e.g., smartwatches, smart bracelets, etc.).
[0136] Example 4
[0137] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for determining rock mass quality indicators.
[0138] The computer-readable storage medium in this application embodiment can be any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. In this application embodiment, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device; for example, it can be the aforementioned memory.
[0139] The computer programs of embodiments of this application can be organized into one or more computer-executable components or modules. Various aspects of this application can be implemented with any number and combination of such components or modules. For example, aspects of this application are not limited to the specific computer-executable instructions or specific components or modules shown in the drawings and described herein. Other embodiments may include different computer-executable instructions or components having more or fewer functions than those shown and described herein.
[0140] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.
Claims
1. A method for determining rock mass quality indicators, characterized in that, include: Obtain the target drill string parameters for the target drill string used to explore the target rock; Obtain quality standard parameters and standard drill string parameters; The quality standard parameters are corrected based on the target drilling tool parameters and the standard drilling tool parameters to obtain the quality standard correction parameters; The rock quality index of the target rock is determined based on the quality standard correction parameters.
2. The method according to claim 1, characterized in that, The target drill string parameters include the diameter of the target drill string, the quality standard parameters include the standard length, and the standard drill string parameters include the diameter of the standard drill string. The quality standard parameters are corrected based on the target drill string parameters and the standard drill string parameters to obtain the quality standard correction parameters, including: The standard length is corrected based on the diameter of the target drill bit and the diameter of the standard drill bit to obtain the standard corrected length; The correction formula for the standard length is: L 修正 =L 标准 (d / d 标准 ) 3 / 2 ; Where d is the diameter of the target drill bit, d 标准 L is the diameter of a standard drill bit. 标准 This is the standard length.
3. The method according to claim 2, characterized in that, The method further includes: The standard length is corrected based on the rock hardness of the target rock; Wherein, if the target rock is soft rock, the standard length is reduced; if the target rock is hard rock, the standard length is increased.
4. The method according to claim 3, characterized in that, The method further includes: The standard length is corrected based on the rock mass wave velocity and / or compressive strength of the target rock.
5. The method according to claim 2, characterized in that, The method further includes: Determine whether the diameter deviation between the target drill string and the standard drill string is greater than a preset threshold. If so, the standard length shall be corrected.
6. The method according to claim 1, characterized in that, The method further includes: Multiple quality standard parameters are determined based on the length of the rock core extracted by the target drill bit, wherein the multiple quality standard parameters have the same properties; The rock quality index of the target rock is determined in segments based on multiple quality standard parameters.
7. The method according to claim 2, characterized in that, The target drilling parameters also include drill bit type and core tube type. The drill bit type includes at least one of carbide drill bit, tungsten carbide drill bit and diamond drill bit. The core tube type includes at least one of double-layer single-action core tube, double-layer double-action core tube and single-layer single-action core tube.
8. A device for determining rock mass quality indicators, characterized in that, include: The first acquisition module is configured to acquire target drill parameters for the target drill used to explore the target rock. The second acquisition module is configured to acquire quality standard parameters and standard drill string parameters; The correction module is configured to correct the quality standard parameters based on the target drilling tool parameters and the standard drilling tool parameters to obtain quality standard correction parameters; The rock quality evaluation module is configured to determine the rock quality index of the target rock based on the quality standard correction parameters.
9. The rock mass quality index determination device according to claim 8, characterized in that, The target drill string parameters include the diameter of the target drill string, the quality standard parameters include the standard length, the standard drill string parameters include the diameter of the standard drill string, and the correction module is further configured to: The standard length is corrected based on the diameter of the target drill bit and the diameter of the standard drill bit to obtain the standard corrected length; The correction formula for the standard length is: L 修正 =L 标准 (d / d 标准 ) 3 / 2 ; Where d is the diameter of the target drill bit, d 标准 L is the diameter of a standard drill bit. 标准 This is the standard length.
10. The rock mass quality index determination device according to claim 9, characterized in that, The correction module is also configured to: The standard length is corrected based on the rock hardness of the target rock; Wherein, if the target rock is soft rock, the standard length is reduced; if the target rock is hard rock, the standard length is increased.