Strip mine blast hole lithology judgment device
By designing the lithology judgment device for gun holes in open-pit mines, using sampling barrels and physical judgment methods, the problem of difficult to judge the lithology distribution in gun holes in open-pit mines is solved, and fast and accurate lithology analysis is achieved, and blasting efficiency is improved. The rationality of the use of explosives.
Patent Information
- Application Number
- CN202420464264.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-03-11
AI Technical Summary
It is difficult to accurately judge the lithologic distribution in the gun hole during blasting operations, resulting in improper use of explosives and affecting the blasting effect and efficiency.
A lithologic judgment device for open-pit mine cannon holes was designed, and the drilling slag pile was sampled through the sampling cylinder. The rock sample type and distribution structure were obtained by using physical judgment methods. Combined with scale bar measurement, the difficulty of rock crushing was quickly analyzed. Provide guidance for the reload of explosives on the gun hole.
It achieves rapid and accurate acquisition of the lithological distribution characteristics in the gun hole, improves the blasting efficiency, and ensures the rationality and efficiency of explosive use.
Smart Images
Figure CN222337182U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of open-pit mine rock drilling, in particular to an open-pit mine blasthole lithology judgment device. Background Art
[0002] When implementing ore and rock blasting operations, open-pit mines will select the appropriate amount of explosives according to the lithological characteristics of the ore body and rock to be blasted, striving to obtain the best ore and rock crushing speed with the lowest explosive consumption. However, due to the heterogeneous state of ore and rock, it is often impossible to accurately and timely obtain the lithological analysis of the rock layer passed by the blasthole when implementing blasting in open-pit mines. Without accurate lithological data in the area where the blasthole is carried, it is difficult to ensure that the single-hole charge of the blasthole meets the blasting rock crushing requirements of the area.
[0003] The current method of obtaining blasthole lithology data is to use a chemical experiment method to sample the slag pile of the blasthole, and then determine the composition and content of the rock sample in the slag pile through chemical treatment and analysis. However, this method can only obtain the composition and content of the rock sample, but cannot obtain the lithology distribution in the blasthole. In addition, the operation is complicated, the experiment time is long, and the work efficiency is low. Therefore, there is an urgent need for a device that is easy to operate and can obtain the lithology distribution characteristics in the blasthole in a short time. Utility Model Content
[0004] The purpose of the utility model is to provide a device for determining the rock properties of open-pit mine blastholes. Technicians use the device to determine the rock properties of open-pit mine blastholes on site to sample the borehole slag pile, and can obtain the rock type, distribution structure of the rock layer and the degree of crushing difficulty of the blasthole in a short time, provide guidance for the explosive loading structure of the blasthole, and improve operating efficiency, which is conducive to maximizing the benefits of blasting and crushing rock.
[0005] In order to achieve the above object, the utility model provides the following technical solutions:
[0006] A device for judging lithology of blastholes in an open-pit mine, comprising:
[0007] A sampling barrel, wherein at least a portion of the barrel wall of the sampling barrel is a transparent area to form an observation window, and along the extension direction of the axis of the sampling barrel, the two opposite ends of the sampling barrel are respectively provided with a first opening and a second opening, and the second opening forms a sampling port;
[0008] A first cover body detachably connected to one end of the sampling tube and used to seal the first opening;
[0009] A second cover assembly connected to the other end of the sampling barrel and used to block the second opening, the second cover assembly comprising: a sampling port protection structure sleeved on the other end of the sampling barrel and fixed to the sampling barrel, and an insert baffle, the sampling port protection structure having a through hole connected to and coaxially arranged with the inner hole of the sampling barrel, a groove extending circumferentially along the axis of the through hole and penetrating the side wall of the sampling port protection structure, the groove being connected to the through hole and corresponding to the end surface of the other end of the sampling barrel, the insert baffle being used to extend into the through hole along the groove and engage with the groove to block the second opening;
[0010] The scale bar is arranged on the outer side of the cylinder wall of the sampling cylinder and extends along the extension direction of the axis of the sampling cylinder. The scale bar has scale marks distributed along the extension direction of the axis of the sampling cylinder.
[0011] On the basis of physical judgment of rock properties, the above-mentioned open-pit mine blasthole rock property judgment device in this embodiment can be used to sample the slag pile of the blasthole on site. When the drill rig is drilling the blasthole, the drilled rock slag will form a slag pile near the blasthole. In the vertical direction, the drill rig drills downward from the top layer on the ground. The stacking order of the rock slag accumulated in the slag pile will be opposite to the order of the underground rock layer. The insert baffle is taken out to open the sampling port, and an area with relatively complete slag pile is selected. The sampling tube is vertically inserted into the slag pile from the top of the slag pile. If necessary, a certain vertical downward pressure can be applied in real time. When the sampling tube completely reaches the bottom, the surrounding rock slag is scraped away, and the insert baffle is inserted at the sampling port to seal the sampling port. In this way, a slag pile rock sample of the blasthole can be obtained. By observing the rock slag in the sampling tube, the rock sample types in the sampling tube are preliminarily classified and the sampling volume is measured by physical judgment. The sampling volume measurement can be obtained through the scale mark on the scale bar, thereby obtaining the rock sample structure parameters and proportion in the sample. Then, by proportionally converting the total length of the sample with the depth of the blasthole, the spatial distribution structure parameters of the rock sample in the blasthole can be obtained. Finally, the technicians combine the particle size of the rock sample, comprehensively analyze and determine the spatial distribution parameters of various rocks in the blasthole, and analyze to obtain a reasonable demand for explosives.
[0012] In addition, after sampling and analysis, if sampling is needed again, the insert baffle can be removed to clean the sample in the sampling tube, and then the next sampling can be carried out. It is quick and convenient and can be reused many times. If the sample needs to be preserved, the insert baffle can be directly inserted into the slot and snapped into place, and the sampling tube can be directly preserved, which is convenient to use.
[0013] Therefore, technicians use the above-mentioned open-pit mine blasthole rock property judgment device to sample the drilling slag pile on site. They can obtain the rock type, distribution structure of the rock layer and the difficulty of crushing the blasthole in a short time, and provide guidance for the blasthole filling explosive structure, improve operating efficiency, and help maximize the benefits of blasting and crushing rock.
[0014] Optionally, the sampling port protection structure has a conical structure, the axis line of the through hole is arranged to coincide with the axis line of the conical structure, the conical structure is sleeved on the outer peripheral side of the other end of the sampling tube through the through hole and fixed to the sampling tube, and the tip of the conical structure is toward the direction of the second opening away from the first opening.
[0015] Optionally, the through hole is a stepped hole, the stepped hole comprises a first opening and a second opening, the first opening is located on a side of the second opening away from the tip of the conical structure, the diameter of the first opening is larger than the diameter of the second opening, and an annular step surface is formed between the first opening and the second opening;
[0016] The other end of the sampling tube is sleeved in the first opening and fixed to the conical structure, and a gap is set between the end surface of the other end of the sampling tube and the annular step surface to form an annular groove; the groove on the side wall of the conical structure is opposite to and penetrates the annular groove;
[0017] The insert baffle is used to be inserted along the slot and extend into the conical structure to be engaged with the annular slot and the slot.
[0018] Optionally, a protective frame is sleeved on the outer circumference of the sampling barrel, and the protective frame includes a first fixing ring sleeved on one end of the sampling barrel, a second fixing ring sleeved on the other end of the sampling barrel, and at least two fixing rods connected between the first fixing ring and the second fixing ring;
[0019] The first fixing ring is fixedly connected to the sampling tube, the second fixing ring is fixedly connected to the sampling tube, the second fixing ring is located on the side of the conical structure facing the first opening, and the second fixing ring abuts against the conical structure; a hollow window is formed between two adjacent fixing rods, and the hollow window is opposite to the observation window;
[0020] The scale bar is arranged on a side of the fixing rod away from the cylinder wall of the sampling cylinder.
[0021] Optionally, the diameter of the second opening is the same as the inner diameter of the sampling cylinder.
[0022] Optionally, two handles extending in a direction away from the axis of the first cover body are disposed on the outer peripheral side of the first cover body, and the two handles are spaced apart.
[0023] Optionally, the open-pit mine blasthole rock property judgment device also includes a piston arranged in the sampling barrel, and the side of the piston facing the first opening is connected to a piston rod extending along the extension direction of the axial centerline of the sampling barrel, and the first cover body is provided with a through hole for the piston rod to pass through and adapted to the piston rod.
[0024] Optionally, a gripping portion for holding by hand is provided at one end of the piston rod away from the piston.
[0025] Optionally, the first cover is threadedly connected to one end of the sampling tube.
[0026] Optionally, the wall of the sampling tube is made of transparent material. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:
[0028] Figure 1 A schematic diagram of the structure of a device for determining lithology of blastholes in an open-pit mine provided in this embodiment;
[0029] Figure 2 A schematic cross-sectional structure diagram of a device for determining lithology of an open-pit mine blasthole provided in this embodiment;
[0030] Figure 3 A schematic cross-sectional view of a device for determining rock properties of an open-pit mine blasthole provided in this embodiment.
[0031] Icons: 1-sampling tube; 2-first cover; 3-second cover assembly; 4-scale bar; 5-protective frame; 6-handle; 7-piston; 8-piston rod; 9-holding part; 31-sampling port protection structure; 32-insert baffle; 51-first fixing ring; 52-second fixing ring; 53-fixing rod; 54-hollow window; 311-slot; 312-first opening; 313-second opening; 314-annular groove. DETAILED DESCRIPTION
[0032] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.
[0033] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense. For example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0034] refer to Figure 1 , Figure 2 and Figure 3As shown, the utility model provides a device for judging rock properties of blastholes in an open-pit mine, comprising: a sampling tube 1, a first cover body 2, a second cover body assembly 3 and a scale bar 4. Specifically, the inner hole of the sampling tube 1 forms a storage space for accommodating rock slag, and the tube wall of the sampling tube 1 is at least partially a transparent area to form an observation window. In the extension direction of the axis of the sampling tube 1, the observation window extends from one end of the sampling tube 1 to the other end, so that all samples from the bottom to the top of the sampling tube 1 can be observed, which is convenient for observing the rock slag installed in the sampling tube 1; along the extension direction of the axis of the sampling tube 1, the two opposite ends of the sampling tube 1 have a first cover body 2, a second cover body assembly 3 and a scale bar 4. The first opening is an opening at one end of the inner hole of the sampling barrel 1, and the second opening is an opening at the other end of the inner hole of the sampling barrel 1, wherein the second opening forms a sampling port; the first cover body 2 can be detachably connected to one end of the sampling barrel 1 and is used to block the first opening. For example, the first cover body 2 can be threadedly connected to one end of the sampling barrel 1, which is stable and reliable and easy to disassemble; the second cover body assembly 3 is connected to the other end of the sampling barrel 1 and is used to block the second opening. The second cover body assembly 3 includes: a sampling port protection structure 31 that is sleeved on the other end of the sampling barrel 1 and fixed to the sampling barrel 1, and an insert The sampling port protection structure 31 has a through hole connected to the inner hole of the sampling tube 1 and coaxially arranged. The through hole has an opening on the side of the sampling port protection structure 31 away from the sampling tube 1, which can allow rock debris to pass through. The sampling port protection structure 31 is wrapped around the outer peripheral side of the sampling port of the sampling tube 1, which can protect the sampling port and facilitate sampling. The side wall of the sampling port protection structure 31 is provided with a groove 311 extending circumferentially along the axial center line of the through hole and penetrating the side wall. The groove 311 is connected to the through hole and corresponds to the end surface of the other end of the sampling tube 1. The insert baffle 32 is used to extend into the through hole along the groove 311 and It is engaged with the slot 311 to seal the second opening, and the insert baffle 32 is inserted into the through hole at the slot 311 to block the sampling port, so that sealing the sampling port is simple and reliable; the scale bar 4 is arranged on the outer side of the barrel wall of the sampling barrel 1, and is extended along the extension direction of the axis of the sampling barrel 1. The scale bar 4 has scale marks distributed along the extension direction of the axis of the sampling barrel 1, and the unit scale of the scale mark can be centimeters, wherein the length of the sampling barrel 1 in the extension direction of its axis can be selected and set according to actual sampling requirements, and the scales on the scale bar 4 are also set according to the length distribution of the sampling barrel 1.
[0035] Among them, the main purpose of the work of explosives on rocks is to break rocks, and the drill will perform a certain amount of mechanical crushing on the rocks during the process of drilling the blastholes. Generally, hard and difficult-to-break rocks will form relatively fine rock slag during the drilling process of the drill, while easy-to-break rocks will generally form larger rock slag. By measuring the particle size of the rock slag and the physical appearance of the rock (such as color, glossiness, etc.), we can basically form a judgment on the type of rock and the difficulty of breaking it. This method can simplify complex rock detection methods such as mechanical experiments and chemical experiments, so that on-site blasting technicians can make a scientific judgment on the blasthole passing through the rock layer in a short time, and obtain a more accurate judgment standard for the difficulty of rock breaking, which can provide a reasonable reference basis for the next step of explosive usage.
[0036] On the basis of the above-mentioned physical judgment of rock properties, the above-mentioned open-pit mine blasthole rock property judgment device in this embodiment can be used to sample the slag pile of the blasthole on site. During the process of blasthole drilling by the drill rig, the drilled rock slag will form a slag pile near the blasthole. In the vertical direction, the drill rig drills downward from the top layer on the ground, and the stacking order of the rock slag accumulated in the slag pile will be opposite to the order of the underground rock layer. The insert baffle is taken out to open the sampling port, and an area with relatively complete slag pile is selected. The sampling tube is vertically inserted into the slag pile from the top of the slag pile. If necessary, a certain vertical downward pressure can be applied in real time. When the sampling tube completely reaches the bottom, the surrounding rock slag is scraped away, and the insert baffle is inserted at the sampling port to seal the sampling port. In this way, a slag pile rock sample of the blasthole can be obtained. By observing the rock slag in the sampling tube, the rock sample types in the sampling tube are preliminarily classified and the sampling volume is measured by physical judgment. The sampling volume measurement can be obtained through the scale mark on the scale bar, thereby obtaining the rock sample structure parameters and proportion in the sample. Then, by proportionally converting the total length of the sample with the depth of the blasthole, the spatial distribution structure parameters of the rock sample in the blasthole can be obtained. Finally, the technicians combine the particle size of the rock sample, comprehensively analyze and determine the spatial distribution parameters of various rocks in the blasthole, and analyze to obtain a reasonable demand for explosives.
[0037] In addition, after sampling and analysis, if sampling is needed again, the insert baffle can be removed to clean the sample in the sampling tube, and then the next sampling can be carried out. It is quick and convenient and can be reused many times. If the sample needs to be preserved, the insert baffle can be directly inserted into the slot and snapped into place, and the sampling tube can be directly preserved, which is convenient to use.
[0038] Therefore, technicians use the above-mentioned open-pit mine blasthole rock property judgment device to sample the drill slag pile on site. They can obtain the rock type, distribution structure of the rock layer and the difficulty of crushing the blasthole in a short time, and provide guidance for the blasthole filling explosive structure. The operation is simple and convenient, which improves the working efficiency and is conducive to maximizing the benefits of blasting and crushing rock.
[0039] like Figure 3 As shown, in order to make it easier for the sampling tube to be inserted into the slag pile, the sampling port protection structure 31 is set as a conical structure, the axis of the through hole is arranged to coincide with the axis of the conical structure, the conical structure is sleeved on the outer peripheral side of the other end of the sampling tube 1 through the through hole, and is fixed to the sampling tube 1, and the tip of the conical structure is facing the direction of the second opening away from the first opening. The sampling port protection structure 31 is set as a conical structure, one side of the conical tip is facing downward, and the outer peripheral side of the side wall of the conical structure is sloped, so that when the sampling tube 1 is inserted into the slag pile, it is easier to insert downward and saves more effort.
[0040] For further reference, Figure 2 and Figure 3 As shown, the through hole in the conical structure is a stepped hole, which includes a first opening 312 and a second opening 313. The first opening 312 is located on the side of the second opening 313 away from the tip of the conical structure. The diameter of the first opening 312 is larger than the diameter of the second opening 313. An annular step surface is formed between the first opening 312 and the second opening 313, and the annular step surface is located on the end surface of the side wall of the second opening 313 facing the first opening 312; the other end of the sampling tube 1 is sleeved in the first opening 312 and fixed to the conical structure, wherein the barrel wall of the sampling tube 1 can be sleeved and clamped with the first opening 312 in an interference fit manner, the end surface of the other end of the sampling tube 1 is opposite to the annular step surface, and the end surface of the other end of the sampling tube 1 and the annular step surface have an interval The annular groove 314 is formed by a gap between the first opening 312 and the annular step surface at the end of the first opening 312 facing the second opening 313. The annular groove 314 is formed in the space of the part of the first opening 312 between the end surface of the sampling tube 1 and the annular step surface. The groove 311 is arranged on the side wall of the conical structure, and the groove 311 on the side wall of the conical structure is opposite to and connected with the annular groove 314. The groove 311 passes through the inside of the conical structure along a direction perpendicular to the axis of the conical structure and is directly connected with the annular groove 314. The length of the groove 311 in the circumferential direction of the axis of the conical structure can occupy half of the circumferential wall of the conical structure. The insert baffle 32 is used to be inserted along the groove 311 and extend into the conical structure to cooperate with the annular groove 314 and the groove 311. By setting the stepped hole to set the annular groove 314 to cooperate with the insert baffle 32, the insert baffle 32 can be well stuck in the annular groove 314, the sealing firmness is increased, and the reliability of the connection between the insert baffle 32 and the conical structure is better.
[0041] In one possible implementation, Figure 1 and Figure 2As shown, in order to better protect the sampling tube, a protective frame 5 can be sleeved on the outer circumference of the sampling tube 1, and the protective frame 5 includes a first fixing ring 51 sleeved on one end of the sampling tube 1, a second fixing ring 52 sleeved on the other end of the sampling tube 1, and at least two fixing rods 53 connected between the first fixing ring 51 and the second fixing ring 52, and the fixing rod 53 is supported between the first fixing ring 51 and the second fixing ring 52 to play a supporting and fixing role; the first fixing ring 51 is fixedly connected to the sampling tube 1, and the second fixing ring 52 is fixedly connected to the sampling tube 1 is fixedly connected, the second fixing ring 52 is located on the side of the conical structure facing the first opening, the second fixing ring 52 abuts against the conical structure, when the sampling tube 1 is inserted downward into the slag pile, the protection frame 5 can abut against the conical structure, and can provide a good abutting pressure to the conical structure to avoid loosening between the conical structure and the sampling tube 1; a hollow window 54 is formed between two adjacent fixing rods 53, and the hollow window 54 is opposite to the observation window, which is convenient for technical personnel to observe; wherein, the scale bar 4 is arranged on the side of the fixing rod 53 away from the tube wall of the sampling tube 1.
[0042] Exemplary, reference Figure 1 As shown, three fixing rods 53, four fixing rods 53 or five fixing rods 53 can be set between the first fixing ring 51 and the second fixing ring 52. The fixing rods 53 are arranged at intervals, and the fixing rods 53 between the first fixing ring 51 and the second fixing ring 52 are evenly distributed around the circumference of the axis of the first fixing ring 51. A plurality of fixing rods 53 are arranged between the first fixing ring 51 and the second fixing ring 52, so as to enhance the structural strength of the protection frame 5.
[0043] In a specific implementation, Figure 3 As shown, the diameter of the second opening 313 is set to be the same as the inner diameter of the sampling tube 1, and the axis of the second opening 313 is coaxially arranged with the axis of the sampling tube 1. The diameter of the second opening 313 is the same as the diameter of the inner hole of the sampling tube 1, which facilitates the entry of rock debris into the sampling tube 1 during sampling.
[0044] like Figure 1 As shown, in order to facilitate the technicians to hold and insert into the slag pile, two handles 6 extending in the direction away from the axis of the first cover body 2 are arranged on the outer peripheral side of the first cover body 2, and the two handles 6 are arranged at intervals. Specifically, the two handles 6 are symmetrically arranged relative to the axis of the sampling tube 1, and one handle is respectively arranged on the opposite sides of the peripheral side of the first cover body 2, so that the technicians can hold and press down to take samples.
[0045] like Figure 2As shown, the above-mentioned open-pit mine blasthole lithology judgment device also includes a piston 7 arranged in the sampling barrel 1, and the piston 7 is connected to the side facing the first opening with a piston rod 8 extending in the extension direction of the axis of the sampling barrel 1, and the first cover body 2 is provided with a through hole for the piston rod 8 to pass through and adapted to the piston rod 8. The piston rod 8 can be pushed to make the piston 7 reciprocate in the sampling barrel 1, and the sample in the sampling barrel 1 can be quickly pushed out, so as to achieve rapid repeated sampling judgment and improve work efficiency. In addition, a spare cover body without a through hole can also be configured, and the spare cover body can be detachably connected to one end of the sampling barrel 1. When the sample needs to be stored, the first cover body 2 with the piston rod 8 can be removed and replaced with a spare cover body without a through hole, so as to facilitate the storage of the sampling barrel 1.
[0046] In order to facilitate technicians to push and pull the piston rod, such as Figure 2 As shown, a gripping portion 9 for human hand holding is provided at the end of the piston rod 8 away from the piston 7. The gripping portion 9 can be a circular block structure. The circular diameter of the circular block structure is larger than the piston rod 8, and the axis of the circular block structure is coaxially arranged with the axis of the piston rod 8, so as to facilitate human hand holding and reciprocating pulling of the piston rod 8.
[0047] Based on the above-mentioned open-pit mine blasthole lithology judgment device, the wall of the sampling tube can be set to a transparent material. For example, the transparent material can be a hard transparent plastic. The entire wall of the sampling tube is transparent, which can make it more convenient to observe the sample in the sampling tube.
[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A device for judging the lithology of blastholes in an open-pit mine, characterized in that: include: A sampling barrel, wherein at least a portion of the barrel wall of the sampling barrel is a transparent area to form an observation window, and along the extension direction of the axis of the sampling barrel, the two opposite ends of the sampling barrel are respectively provided with a first opening and a second opening, and the second opening forms a sampling port; A first cover body detachably connected to one end of the sampling tube and used for sealing the first opening; A second cover assembly connected to the other end of the sampling barrel and used to block the second opening, the second cover assembly comprising: a sampling port protection structure sleeved on the other end of the sampling barrel and fixed to the sampling barrel, and an insert baffle, the sampling port protection structure having a through hole connected to and coaxially arranged with the inner hole of the sampling barrel, a groove extending circumferentially along the axis of the through hole and penetrating the side wall of the sampling port protection structure, the groove being connected to the through hole and corresponding to the end surface of the other end of the sampling barrel, the insert baffle being used to extend into the through hole along the groove and engage with the groove to block the second opening; The scale bar is arranged on the outer side of the cylinder wall of the sampling cylinder and extends along the extension direction of the axis of the sampling cylinder. The scale bar has scale marks distributed along the extension direction of the axis of the sampling cylinder.
2. The open-pit mine blasthole lithology judgment device according to claim 1, characterized in that: The sampling port protection structure has a conical structure, the axis line of the through hole is arranged to coincide with the axis line of the conical structure, the conical structure is sleeved on the outer peripheral side of the other end of the sampling tube through the through hole and fixed to the sampling tube, and the tip of the conical structure is toward the direction of the second opening away from the first opening.
3. The open-pit mine blasthole lithology judgment device according to claim 2, characterized in that: The through hole is a stepped hole, and the stepped hole includes a first opening and a second opening, the first opening is located on a side of the second opening away from the tip of the conical structure, the diameter of the first opening is larger than the diameter of the second opening, and an annular step surface is formed between the first opening and the second opening; The other end of the sampling tube is sleeved in the first opening and fixed to the conical structure, and a gap is set between the end surface of the other end of the sampling tube and the annular step surface to form an annular groove; the groove on the side wall of the conical structure is opposite to and penetrates the annular groove; The insert baffle is used to be inserted along the slot and extend into the conical structure to be engaged with the annular slot and the slot.
4. The open-pit mine blasthole lithology judgment device according to claim 3, characterized in that: A protective frame is sleeved on the outer circumference of the sampling tube, and the protective frame includes a first fixing ring sleeved on one end of the sampling tube, a second fixing ring sleeved on the other end of the sampling tube, and at least two fixing rods connected between the first fixing ring and the second fixing ring; The first fixing ring is fixedly connected to the sampling tube, the second fixing ring is fixedly connected to the sampling tube, the second fixing ring is located on the side of the conical structure facing the first opening, and the second fixing ring abuts against the conical structure; a hollow window is formed between two adjacent fixing rods, and the hollow window is opposite to the observation window; The scale bar is arranged on a side of the fixing rod away from the cylinder wall of the sampling cylinder.
5. The open-pit mine blasthole lithology judgment device according to claim 3, characterized in that: The diameter of the second opening is the same as the inner diameter of the sampling tube.
6. The open-pit mine blasthole lithology judgment device according to any one of claims 1 to 5, characterized in that: Two handles are arranged on the outer peripheral side of the first cover body and extend in a direction away from the axis of the first cover body, and the two handles are arranged at intervals.
7. The open-pit mine blasthole lithology judgment device according to any one of claims 1 to 5, characterized in that: It also includes a piston arranged in the sampling cylinder, and the side of the piston facing the first opening is connected to a piston rod extending along the extension direction of the axial center line of the sampling cylinder, and the first cover body is provided with a through hole for the piston rod to pass through and adapted to the piston rod.
8. The open-pit mine blasthole lithology judgment device according to claim 7, characterized in that: A gripping portion for holding by a hand is arranged at one end of the piston rod away from the piston.
9. The open-pit mine blasthole lithology judgment device according to any one of claims 1 to 5, characterized in that: The first cover is threadedly connected to one end of the sampling tube.
10. The open-pit mine blasthole lithology judgment device according to any one of claims 1 to 5, characterized in that: The cylinder wall of the sampling cylinder is made of transparent material.