Rock core box for measuring length of rock core
By installing a laser measuring instrument and control system in the core box, the core length is automatically measured, which solves the problems of low efficiency and low accuracy in the existing technology and realizes efficient and accurate calculation of rock quality indicators.
Patent Information
- Application Number
- CN202520713893.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-04-15
AI Technical Summary
Existing technologies for measuring core length are inefficient and inaccurate, and are greatly affected by human factors, resulting in large errors in the calculation of rock quality index (RQD).
The length of the rock core is automatically measured using a laser measuring instrument, and the control system determines whether each section of the rock core is more than 10cm long, thereby automatically accumulating the cumulative length of the rock core and obtaining the rock quality index RQD.
This improved the accuracy and efficiency of core length measurement, reduced human error, and ensured the accuracy of rock quality indicators.
Smart Images
Figure CN223678443U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to geological exploration technical field, concretely is a core box of measuring core length. BACKGROUND
[0002] With the progress and development of human civilization society, the demand for underground energy is also more and more, and the exploration behavior of mineral geology, hydrogeology, engineering geology, oil and gas geology, scientific geology is also more and more extensive. In various geological exploration behaviors, ground drilling is the most direct way to understand and collect underground core, which is used to analyze underground mineral reserves, geological structure, mining conditions and so on to achieve the purpose of scientific development of geological resources. Core box is an important equipment in the process of geological drilling and geological scientific research.
[0003] Rock quality designation is abbreviated as RQD, which refers to the ratio of the cumulative length of each columnar core greater than 10cm to the footage of each drilling round (expressed in percentage). That is: RQD = (cumulative length of each columnar core greater than 10cm / footage of each drilling round) * 100%. Currently, the calculation of RQD is that the technical personnel directly measures the length of each columnar core with a ruler, then records it, adds all the columnar cores greater than 10cm, and then divides by the footage to calculate RQD, which is relatively low in work efficiency.
[0004] CN219822093U discloses a core box for statistical core size in geological exploration, which comprises a core box body, a connecting groove is formed at the top of the core box body, a strip-shaped groove is formed at the inner side of the core box body, the strip-shaped groove is used for accommodating the core, a limiting clamping groove is formed in the side wall of the strip-shaped groove, a baffle is arranged in the strip-shaped groove, a groove is formed at the top end position of the side surface of the baffle to facilitate the taking and placing of the baffle, and the baffle and the limiting clamping groove are matched with each other, and a connecting mechanism is fixedly connected to the bottom surface of the core box body; the baffle is arranged, the drilled core is placed in the strip-shaped groove, then the position of the core is fixed by the baffle, the distance between the two baffles can be accurately obtained by measuring the distance between the two baffles, and the baffle can also play a marking role, so that the measurement error of the core is reduced, and the finally calculated core size is more accurate.
[0005] The above patent document still needs manual adjustment of the baffle to measure the core length and calculate the statistical core size to obtain the rock quality index, that is, RQD. This way is relatively greatly affected by the measuring tool and the subjective factors of the person, and the manual reading is easy to make mistakes, resulting in low measurement accuracy and low efficiency, time-consuming and labor-consuming.
[0006] Based on this, the technical problem solved in the case is: how to solve the problem of low efficiency and low accuracy in statistical core size. UTILITY MODEL CONTENT
[0007] The core box capable of measuring the length of the core can eliminate the error caused by subjective factors in measurement, improves the measurement accuracy and efficiency, and avoids the problem that the rock quality cannot be truly reflected.
[0008] The technical scheme of the utility model discloses that
[0009] A core box capable of measuring the length of the core, comprising a box body, a control system, a plurality of cavities for placing the core are arranged on the box body, a laser measuring instrument for measuring the length of the core is arranged in each cavity, the control system is in communication connection with the laser measuring instrument and is used for accumulating the total length of the core with the length greater than 10 cm.
[0010] In the core box capable of measuring the length of the core, the laser measuring instrument comprises an infrared emitter and an infrared receiver; the infrared emitter and the infrared receiver are arranged on one side of the cavity and are used for measuring the length of the core.
[0011] In the core box capable of measuring the length of the core, the optical axis spacing of the laser measuring instrument is less than or equal to 5 mm.
[0012] In the core box capable of measuring the length of the core, a plurality of through holes matched with the laser measuring instrument are arranged on one side of the box body; the through holes are used for wiring of the laser measuring instrument.
[0013] In the core box capable of measuring the length of the core, a protective shell is further arranged on one side of the box body; the protective shell surrounds the through holes and is used for protecting the wiring of the laser measuring instrument.
[0014] In the core box capable of measuring the length of the core, a positioning part for limiting the core is arranged in the cavity.
[0015] In the core box capable of measuring the length of the core, the box body is provided with five cavities for placing the core, and the length of the cavity is 1 m.
[0016] The technical scheme of the utility model has at least one of the following advantages or beneficial effects:
[0017] The core box is provided with cavities for placing the core, the laser measuring instrument is arranged in the cavity, so that the length of the core can be automatically measured, the laser measuring instrument is in communication connection with the control system, the control system judges whether the length of each core is greater than 10 cm, so that the cumulative length of the core can be automatically obtained, and the rock quality index, i.e. RQD, can be quickly obtained by the staff. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a schematic view of embodiment 1 of the present application;
[0019] Figure 2 is a top view of the core box of embodiment 1 of the present application.
[0020] BRIEF DESCRIPTION OF REFERENCE NUMERALS
[0021] box 1; protective shell 11; chamber 101; through hole 102; positioning portion 103; control system 2; laser measuring instrument 3; infrared emitter 31; infrared receiver 32. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0023] Embodiment 1
[0024] Reference Figure 1 、 2 A core box for measuring the length of a core, comprising a box 1, a control system 2; the box 1 is provided with five chambers 101 for placing cores; the chamber 101 is provided with a laser measuring instrument 3 for measuring the length of the core; the control system 2 is in communication connection with the laser measuring instrument 3, and is used for accumulating the total length of the core with a length greater than 10 cm.
[0025] In the present embodiment, preferably, the laser measuring instrument 3 comprises an infrared emitter 31 and an infrared receiver 32; the infrared emitter 31 and the infrared receiver 32 are respectively arranged on one side of the chamber 101 and are used for measuring the length of the core; the length of the chamber 101 is 1 m.
[0026] In the present embodiment, further preferably, in order to improve the accuracy of measurement, the model of the laser measuring instrument 3 is PTM10-12; the optical axis spacing of the laser measuring instrument 3 is 2.5 mm.
[0027] In actual application, the staff only needs to put the core into the chamber 101 and as far as possible to follow the putting from the end, when one section of the core is put into the chamber 101, the light beam of the laser measuring instrument 3 is blocked and the length of the section of the core is obtained according to the number of blocked light beams, it needs to be explained that the control system 2 in the embodiment includes a PLC controller and an electronic counter, the PLC controller judges with 10cm as the threshold, the judgment logic is as follows: if the length is greater than 10cm, the electronic counter records and accumulates the length, if the length is less than 10cm, it is not recorded; after all the cores are put into the chamber 101, the core cumulative length is obtained, and the rock quality index, RQD, can be obtained through simple conversion.
[0028] The core box of the embodiment is provided with the core chamber 101 for placing the core, the laser measuring instrument 3 is arranged in the chamber 101, so that the length of the core is automatically measured, and the laser measuring instrument 3 is in communication connection with the control system 2, the control system 2 judges whether the length of each section of the core reaches more than 10cm, so that the core cumulative length is automatically obtained, thereby the staff can quickly obtain the rock quality index, RQD. The core box can eliminate the error caused by the subjective factors in the measurement, not only improves the accuracy of the measurement, but also improves the efficiency of the measurement, thereby avoiding the problem that the rock quality cannot be truly reflected.
[0029] In the embodiment, specifically, one side of the box body 1 is provided with five through holes 102 matched with the laser measuring instrument 3; the through holes 102 are used for wiring of the laser measuring instrument 3. In actual application, the line of the laser measuring instrument 3 is connected with the control system 2 through the through holes 102.
[0030] In the embodiment, more specifically, one side of the box body 1 is further provided with a protective shell 11; the protective shell 11 surrounds the through holes 102 and is used for protecting the wiring of the laser measuring instrument 3. After the line of the laser measuring instrument 3 passes through the through holes 102, the connection head of the line is located in the protective shell 11, so as to protect the connection head of the line of the laser measuring instrument 3.
[0031] In the embodiment, preferably, in order to prevent the core from directly touching the laser measuring instrument 3 and causing the measurement accuracy to be damaged or the measurement to be wrong, the chamber 101 is provided with a positioning part 103 for limiting the core; the positioning part 103 is arc-shaped.
[0032] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.
Claims
1. A core barrel for measuring the length of a core, characterized in that The utility model relates to a core length measuring device, including box, control system, the box is equipped with a plurality of for placing core chamber, chamber all is equipped with for measuring the length of core laser measuring instrument, control system is connected with laser measuring instrument communication and is used for the total length of core length greater than 10cm is accumulated.
2. The core barrel for measuring the length of a core according to claim 1, wherein, The laser measuring instrument includes an infrared emitter and an infrared receiver, which are respectively arranged on one side of the chamber and used for measuring the length of the core.
3. The core barrel for measuring the length of a core as recited in claim 2, wherein, The optical axis spacing of the laser measuring instrument is less than or equal to 5 mm.
4. The core barrel to measure the length of the core according to claim 1, wherein, One side of the box is provided with a plurality of through holes matched with the laser measuring instrument, and the through holes are used for wiring of the laser measuring instrument.
5. The core barrel for measuring the length of a core as recited in claim 4, wherein, One side of the box is further provided with a protective shell, which surrounds the through hole and is used for protecting the wiring of the laser measuring instrument.
6. The core barrel to measure the length of the core according to claim 1, wherein, The chamber is provided with a positioning part for limiting the core.
7. The core barrel of claim 1, wherein, The box is provided with five chambers for placing the core, and the length of the chamber is 1 m.