A method for butt joining a rope sawing extraction rope hole drilling

Abstract

A method for docking drilled holes in wire saw mining, relating to the field of non-explosive mining, is disclosed. The method includes the following steps: using a drill bit equipped with a sound wave generator within the drill rod to drill a first borehole in a mining bench of the rock strata; using at least three sound wave receivers to receive sound wave signals emitted by the sound wave generator during drilling; processing and calculating the received sound wave signals to obtain the three-dimensional positioning coordinates of the drill bit during drilling; drawing a three-dimensional coordinate trajectory diagram of the borehole based on the three-dimensional positioning coordinates of the drill bit during drilling; drilling a second borehole in the mining bench of the rock strata, and correcting the drilling angle during drilling based on the three-dimensional coordinate trajectory diagram of the borehole to dock the second borehole with the first borehole. The method for docking drilled holes in wire saw mining provided in this application visualizes the drilling docking process, improving the accuracy and efficiency of the drilling docking.

Description

Technical Field

[0001] This application relates to the field of non-explosive mining, and more specifically, to a method for connecting the drilled holes in wire saw mining. Background Technology

[0002] With increasing environmental regulations and limitations imposed by surrounding geographical conditions, wire sawing, a low-pollution and high-efficiency non-explosive mining method, is being increasingly used in non-metallic open-pit mining. However, during the drilling process in wire sawing, due to the anisotropy of the rock mass and other factors, non-directional deviations often occur, especially along the height direction, making it difficult to effectively connect the two drilled holes. Currently, in actual mining operations, connection is mostly achieved through multiple drilling attempts, but this drilling connection method is extremely inefficient, significantly impacting production efficiency and the company's profitability. Summary of the Invention

[0003] The purpose of this application is to provide a method for drilling and connecting holes in wire saw mining, which realizes visualization of the drilling and connecting process and improves the accuracy and efficiency of drilling and connecting.

[0004] The embodiments of this application are implemented as follows:

[0005] This application provides a method for drilling and connecting holes for wire sawing, which includes the following steps:

[0006] The first borehole is obtained by drilling a hole in the mining bench of the rock strata using a drill bit with a sound wave generator inside the drill pipe.

[0007] At least three acoustic receivers are used to receive the acoustic signals emitted by the acoustic generator during the drilling process;

[0008] The received acoustic signals are processed and calculated to obtain the three-dimensional positioning coordinates of the drill bit during drilling;

[0009] A three-dimensional coordinate trajectory diagram of the borehole is drawn based on the three-dimensional positioning coordinates of the drill bit during drilling.

[0010] A second borehole is obtained by drilling through the mining bench of the rock strata in the mine. During the drilling process, the drilling angle is corrected according to the three-dimensional coordinate trajectory diagram of the borehole so that the second borehole is connected with the first borehole.

[0011] In some alternative implementations, the method for calculating the three-dimensional positioning coordinates of the drill bit during drilling is as follows:

[0012] The coordinates of each sound wave receiver are set as follows: , , ), ( , , ), ( , , )...( , , The three-dimensional positioning coordinates of the drill bit during drilling are ( , , According to the time when each sound wave receiver receives the sound wave signal emitted by the sound wave generator, and the speed of sound wave propagation The distances between each acoustic receiver and the drill bit were calculated. ,but

[0013] ;

[0014] ;

[0015] ; ...

[0016] ;

[0017] set up ;

[0018] Linearize the nonlinear equation:

[0019] ;

[0020] ;

[0021] ;

[0022] ;

[0023] The coordinates are calculated based on the linearized equations described above:

[0024] ;

[0025] ;

[0026] Correcting the coordinates yields the corrected coordinates:

[0027] ;

[0028] ;

[0029] when The coordinates when the value is less than the preset threshold are the three-dimensional positioning coordinates of the drill bit. , , ).

[0030] In some alternative implementations, the individual acoustic receivers are not arranged collinearly.

[0031] In some alternative implementations, at least one acoustic receiver is provided on the top and side of the mining step, respectively.

[0032] In some alternative implementations, the drill bit is connected to a drill rod, and a sealing cylinder is provided inside the drill rod near the drill bit. The sealing cylinder contains a sound wave generator, a power supply, and a sound wave transmission circuit and processing unit that are electrically connected to the sound wave generator and the power supply, respectively.

[0033] In some alternative implementations, the diameter of the drill bit used to drill a second hole into the rock formation is larger than that used to drill a first hole into the rock formation.

[0034] The beneficial effects of this application are as follows: The method for docking wire saw holes in mining includes the following steps: using a drill bit equipped with a sound wave generator inside the drill rod to drill a hole in the mining bench of the rock strata to obtain a first borehole; using at least three sound wave receivers to receive the sound wave signals emitted by the sound wave generator during the drilling process; processing and calculating the received sound wave signals to obtain the three-dimensional positioning coordinates of the drill bit during drilling; drawing a three-dimensional coordinate trajectory diagram of the borehole based on the three-dimensional positioning coordinates of the drill bit during drilling; drilling a hole in the mining bench of the rock strata to obtain a second borehole, and correcting the drilling angle according to the three-dimensional coordinate trajectory diagram of the borehole during the drilling process to dock the second borehole with the first borehole. The method for docking wire saw holes in mining includes visualization of the drilling docking process, improving the accuracy and efficiency of the drilling docking. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic diagram of the method for drilling and connecting wire saw holes for wire saw mining, as provided in an embodiment of this application;

[0037] Figure 2 A schematic diagram of the connection between the drill bit and the acoustic generator in the method for drilling and connecting wire saw holes in an embodiment of this application;

[0038] Figure 3This is a schematic diagram illustrating the principle of the acoustic generator used in the method for drilling and connecting wire saw holes in the wire saw mining process provided in this application, which uses a first acoustic receiver, a second acoustic receiver, and a third acoustic receiver to receive and position the acoustic generator connected to the drill rod.

[0039] In the diagram: 100, mining bench; 110, first borehole; 120, second borehole; 210, first acoustic receiver; 220, second acoustic receiver; 230, third acoustic receiver; 240, drill bit; 250, drill rod; 260, cavity; 270, sealing cylinder; 280, acoustic generator; 290, power supply; 300, acoustic transmission circuit and processing unit; 400, computer. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] The features and performance of the wire saw mining method for drilling and connecting wire holes are further described in detail below with reference to embodiments.

[0048] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, this application provides a method for drilling and connecting holes for wire saw mining, applied to the mining of a limestone mine. The slope angle of the mining bench 100 of the limestone mine is 60 degrees, and the bench height of the mining bench 100 is 5m. The method includes the following steps:

[0049] A first acoustic receiver 210 and a second acoustic receiver 220 are installed on the top surface of the mining step 100, and a third acoustic receiver 230 is installed on the front surface of the mining step 100. The first acoustic receiver 210, the second acoustic receiver 220 and the third acoustic receiver 230 are arranged in a triangle.

[0050] The first borehole 110 is obtained by drilling inward from the front of the mining bench 100 using drill bit 240. The drill rod 250 connected to the drill bit 240 has a cavity 260. The cavity 260 is located at one end of the drill rod 250 near the drill bit 240. The cavity 260 has a sealing cylinder 270 for waterproofing and shockproofing. The sealing cylinder 270 has a sound wave generator 280, a power supply 290, and a sound wave emission circuit and processing unit 300 that are electrically connected to the sound wave generator 280 and the power supply 290, respectively.

[0051] The first acoustic receiver 210, the second acoustic receiver 220 and the third acoustic receiver 230 are used to receive the acoustic signals emitted by the acoustic generator 280 during the drilling process. The acoustic signals are filtered and processed to obtain acoustic electrical signals, which are then transmitted to the computer 400. The computer 400 uses acoustic processing software to process and calculate the received acoustic electrical signals to obtain the three-dimensional positioning coordinates of the first borehole 110 obtained by the drill bit 240.

[0052] The method for calculating the three-dimensional positioning coordinates of the first borehole 110 of drill bit 240 is as follows:

[0053] The coordinates of the first sound receiver 210, the second sound receiver 220, and the third sound receiver 230 are set as follows: , , ), ( , , )and( , , The three-dimensional positioning coordinates of the first borehole 110 are ( , , According to the timing of the sound wave signals received by the first sound wave receiver 210, the second sound wave receiver 220, and the third sound wave receiver 230 from the sound wave generator 280 and the speed of sound wave propagation The distances between the first acoustic receiver 210, the second acoustic receiver 220, the third acoustic receiver 230, and the drill bit 240 were calculated. ,but

[0054] ;

[0055] ;

[0056] ;

[0057] set up ;

[0058] Linearize the nonlinear equation:

[0059] ;

[0060] ;

[0061] ;

[0062] ;

[0063] The coordinates are calculated based on the linearized equations described above:

[0064] ;

[0065] ;

[0066] Correcting the coordinates yields the corrected coordinates:

[0067] ;

[0068] ;

[0069] when The coordinates when the value is less than the preset threshold are the three-dimensional positioning coordinates of drill bit 240 and the first borehole 110. , , ).

[0070] The three-dimensional coordinate trajectory diagram of the first borehole 110 is obtained by drawing the three-dimensional positioning coordinates of the first borehole 110.

[0071] The drill bit 240 is replaced to drill inward from the side of the mining bench 100 of the rock stratum to obtain a second borehole 120. During the drilling process, the drilling angle of the second borehole 120 is corrected according to the three-dimensional coordinate trajectory diagram of the first borehole 110 so that the end of the second borehole 120 is aligned with the end of the first borehole 110. The diameter of the drill bit 240 when drilling the mining bench 100 of the rock stratum to obtain the second borehole 120 is 110% of the diameter of the drill bit 240 when drilling the first borehole 110.

[0072] The method for docking wire saw holes in wire saw mining provided in this application embodiment utilizes the three-sphere positioning principle of acoustic waves. Multiple acoustic receivers receive acoustic signals emitted by a drill bit equipped with an acoustic generator when drilling the first hole. The acoustic signals are processed and the three-dimensional coordinates of the first hole's trajectory are calculated. These three-dimensional coordinates are then visualized to obtain a three-dimensional coordinate trajectory diagram of the first hole. During the drilling of the second hole, the drilling angle of the second hole is adjusted using the three-dimensional coordinate trajectory diagram of the first hole, causing the second hole to continuously approach the bottom coordinate position of the first hole. This achieves the purpose of docking wire saw holes in wire saw mining, greatly improving the efficiency of wire saw hole docking.

[0073] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A method for drilling and connecting holes for wire sawing in wire saw mining, characterized in that, It includes the following steps: The first borehole is obtained by drilling a hole in the mining bench of the rock strata using a drill bit with a sound wave generator inside the drill pipe. At least three acoustic receivers are used to receive acoustic signals emitted by the acoustic generator during drilling; the received acoustic signals are processed and calculated to obtain the three-dimensional positioning coordinates of the drill bit during drilling; the coordinates of each acoustic receiver are set as follows: , , ), ( , , ), ( , , )...( , , The three-dimensional positioning coordinates of the drill bit during drilling are ( , , According to the time when each sound wave receiver receives the sound wave signal emitted by the sound wave generator, and the speed of sound wave propagation The distances between each acoustic receiver and the drill bit were calculated. ,but ； ； ； ... ； set up ; Linearize the nonlinear equation: ； ； ； ； The coordinates are calculated based on the linearized equations described above: ； ； Correcting the coordinates yields the corrected coordinates: ； ； when The coordinates when the value is less than the preset threshold are the three-dimensional positioning coordinates of the drill bit. , , ); A three-dimensional coordinate trajectory diagram of the borehole is drawn based on the three-dimensional positioning coordinates of the drill bit during drilling. A second borehole is obtained by drilling into the mining bench of the rock strata in the mine, and the drilling angle is corrected according to the three-dimensional coordinate trajectory diagram of the borehole during the drilling process so that the second borehole and the first borehole are connected.

2. The method for drilling and connecting holes for wire sawing in wire sawing according to claim 1, characterized in that, At least three of the aforementioned acoustic receivers are not arranged collinearly.

3. The method for drilling and connecting holes for wire sawing according to claim 1, characterized in that, At least one acoustic receiver is provided on the top and side of the mining step.

4. The method for drilling and connecting holes for wire sawing in wire sawing according to claim 1, characterized in that, The drill bit is connected to a drill rod, and a sealing cylinder is provided inside one end of the drill rod near the drill bit. The sealing cylinder contains the sound wave generator, a power supply, and a sound wave emission circuit and processing unit that are electrically connected to the sound wave generator and the power supply, respectively.

5. The method for drilling and connecting holes for wire sawing in wire sawing according to claim 1, characterized in that, The diameter of the drill bit used to drill a second hole in a mine rock formation is larger than that used to drill a first hole in the same formation.

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