An open water hole depth measuring device and method of use thereof

Abstract

The application discloses an open water hole depth measuring device and a using method thereof, and relates to the technical field of open bench blasting. The device comprises a measuring rope, a connecting ring, a counterweight iron ball, a hollow floating ball and a hollow connecting ring. The connecting ring is fixedly welded with the counterweight iron ball, and the hollow floating ball is integrally formed with the hollow connecting ring. One end of the measuring rope is connected to the hollow connecting ring, and the other end penetrates through the connecting ring. The application solves the problem that the water depth in a hole cannot be accurately determined and the interval charging construction is restricted in the prior art.

Description

Technical Field

[0001] This invention relates to the field of open-pit bench blasting technology, and in particular to an open-pit waterhole depth measuring device and its usage method. Background Technology

[0002] Open-pit bench blasting technology is widely used in mining and is a key step in the open-pit mining process, accounting for 25% to 35% of the total development cost. The quality of blasting has a significant impact on the economic benefits of the mine. Among the key steps, drilling is an indispensable step before blasting operations. However, due to the influence of weather and groundwater levels, water accumulation often occurs in the boreholes, causing non-water-resistant explosives to become waterlogged and ineffective, severely restricting the blasting effect and even causing explosive misfires.

[0003] Currently, to address the problem of water-filled blasting, the industry often employs drainage measures or uses water-resistant explosives for blasting. While these two methods achieve good blasting results, they increase blasting costs and are not economically viable. Currently, using interval charging to modify the charge structure is an important means of balancing economy and blasting effect. Interval blasting technology can fully utilize the incompressibility of water, equalize the blast pressure, increase the blast work time, and generate a "water wedge" effect under the expansion of the blasting gas, improving the rock mass fragmentation effect. Simultaneously, it can reduce the amount of explosive used, improving economic efficiency.

[0004] However, in actual production, the borehole inspection process lacks a device to accurately determine the borehole depth and water depth. Currently, there is no similar patented technology in China. In on-site production, borehole inspection usually only indicates the presence of water, and subsequently, the entire production process often employs water-resistant explosives (such as mixed emulsion explosives), or precise interval loading cannot be implemented. This crude operating method severely restricts the accuracy and effectiveness of interval loading.

[0005] Therefore, developing a new device that can accurately measure the depth of water holes and water depth is a necessary measure that balances production efficiency and economic cost. Summary of the Invention

[0006] This invention provides an open-air water hole depth measuring device and its usage method, which solves the problems of existing technologies that cannot accurately determine the water depth inside the hole and restrict the intermittent charging construction.

[0007] In a first aspect, embodiments of the present invention provide an open-air waterhole depth sounding device, the device comprising:

[0008] The measuring rope comprises a connecting ring, a counterweight ball, a hollow float, and a hollow connecting ring; the connecting ring is welded and fixed to the counterweight ball, and the hollow float is integrally formed with the hollow connecting ring; one end of the measuring rope is connected to the hollow connecting ring, and the other end passes through the connecting ring.

[0009] In one optional implementation, the measuring rope is made of nylon and is cylindrical, with length markings on its surface; the marking at the contact point between the measuring rope and the hollow float is 0, and the marking at the other end indicates the length of the measuring rope; the length of the measuring rope is twice the depth of the borehole being measured.

[0010] In one alternative implementation, both the connecting ring and the counterweight ball are made of stainless steel, and the diameter of the connecting ring is larger than the diameter of the measuring rope.

[0011] In one alternative implementation, the sum of the diameters of the counterweight ball and the hollow float is less than the borehole diameter.

[0012] Secondly, embodiments of the present invention provide a method for using an open-air waterhole depth sounding device. The method of using the open-air waterhole depth sounding device includes:

[0013] Tie one end of the measuring rope to the hollow connecting ring, and pass the other end of the measuring rope through the connecting ring, ensuring that the measuring rope can slide freely in the connecting ring;

[0014] Pull up the measuring rope so that the counterweight iron ball and the hollow float are suspended in the air, and record the first measuring rope reading at the connecting ring;

[0015] Lift the counterweight iron ball and the hollow float ball, and place them into the borehole. When the counterweight iron ball is placed at the bottom of the borehole, gently tighten the measuring rope, record the second measuring rope reading at the borehole opening, and calculate the depth of the borehole using geometric relationships.

[0016] Loosen the measuring rope and wait for the counterweight iron ball to sink to the bottom. The hollow float will then rise to the surface under the action of buoyancy. Gently tighten the measuring rope and record the reading of the third measuring rope at the borehole opening. Calculate the water depth inside the borehole and the distance between the water level and the opening opening using geometric relationships.

[0017] In one optional implementation, the formula for calculating the depth of the borehole is:

[0018]

[0019] In the formula, The depth of the borehole; This is the first measurement rope reading; This is the second measuring rope reading; The diameter of the counterweight iron ball.

[0020] In one alternative implementation, the formula for calculating the water depth within the borehole is:

[0021]

[0022] In the formula, The water depth inside the borehole; This is the second measuring rope reading; This is the reading from the third measuring rope; The diameter of the counterweight iron ball.

[0023] In one optional implementation, the formula for calculating the distance between the water level and the orifice is:

[0024]

[0025] In the formula, This represents the distance from the water level to the orifice. This is the first measurement rope reading; This is the second measuring rope reading; This is the reading from the third measuring rope.

[0026] Beneficial effects:

[0027] It can accurately determine the depth of water holes and the water depth inside the holes, providing accurate data support for interval charging; the device has a simple structure, is easy to operate, has low manufacturing cost, and can be reused; it greatly improves the efficiency and accuracy of water hole measurement, helps to optimize the charging structure, reduce blasting costs, and improve blasting effect. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an open-air waterhole depth measuring device provided in an embodiment of the present invention;

[0029] Figure 2 This is a flowchart illustrating the method of using an open-air waterhole depth sounding device according to an embodiment of the present invention.

[0030] In the diagram: 1-measuring rope, 2-connecting ring, 3-counterweight iron ball, 4-hollow float, 5-hollow connecting ring. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] Reference Figure 1 An embodiment of the present invention provides an open-air waterhole depth sounding device, the device comprising:

[0034] The measuring rope 1, connecting ring 2, counterweight iron ball 3, hollow float 4, and hollow connecting ring 5 are provided. The connecting ring 2 is welded and fixed to the counterweight iron ball 3, and the hollow float 4 and hollow connecting ring 5 are integrally formed. One end of the measuring rope 1 is connected to the hollow connecting ring 5, and the other end passes through the connecting ring 2.

[0035] In this embodiment, the connecting ring 2 and the counterweight ball 3 are fixedly connected by welding, and the material is stainless steel to adapt to the harsh mining environment. The hollow float 4 and the hollow connecting ring 5 are integrally formed to ensure a firm connection. One end of the measuring rope 1 is tied to the hollow connecting ring 5, and the other end passes upward through the connecting ring 2. In use, the connecting ring 2 acts as a sliding node, in which the measuring rope 1 can slide. The counterweight ball 3 provides gravity, causing the device to sink to the bottom of the hole; the hollow float 4 provides buoyancy, allowing it to float in the water hole to indicate the water level.

[0036] In one optional implementation, the measuring rope 1 is made of nylon and is cylindrical, with length markings on its surface; the marking at the contact point between the measuring rope 1 and the hollow float 4 is 0, and the marking at the other end is the length of the measuring rope; the length of the measuring rope 1 is twice the depth of the borehole being measured, to accommodate borehole measurements at different depths.

[0037] In this embodiment, the material selection is as follows: the measuring rope 1 is made of high-strength nylon material, which has the characteristics of wear resistance, acid and alkali resistance, high tensile strength and extremely low shrinkage rate, ensuring that it will not rot in the long-term use in the humid borehole environment, and the length measurement accuracy is not affected by the tension and will not produce obvious elastic deformation.

[0038] Scale markings: The surface of measuring rope 1 is marked with length scales using hot pressing or printing processes. The scale lines should be clear, waterproof, and wear-resistant. The zero point (0 mark) of the scale is precisely set at the connection between measuring rope 1 and hollow connecting ring 5. The scale increments sequentially from the zero point towards the end of the measuring rope, with the minimum division preferably being 1 cm or 5 cm to meet the accuracy requirements for hole depth measurement in blasting projects.

[0039] Length setting: The total length of measuring rope 1 is set to twice the expected maximum borehole depth. For example, if the commonly drilled borehole depth in the mining area is 15 meters, the measuring rope length should be at least 30 meters. This length design ensures that when the hollow buoy floats up and the measuring rope forms a reciprocating loop of "bottom of borehole - borehole opening - water surface - borehole opening" inside the borehole during water depth measurement, there is still enough slack outside the borehole for the operator to pull and read the data.

[0040] In one alternative implementation, both the connecting ring 2 and the counterweight ball 3 are made of stainless steel, and the diameter of the connecting ring 2 is larger than the diameter of the measuring rope 1.

[0041] In this embodiment, regarding connection and materials: the connecting ring 2 is preferably a stainless steel ring, with its inner diameter designed to be 2-3 mm larger than the diameter of the measuring rope 1, to reduce frictional resistance when the measuring rope passes through, ensuring that the measuring rope can slide freely during reading. The connecting ring 2 and the counterweight ball 3 are fully welded together using stainless steel welding rods. The weld should be smooth and free of weld slag protrusions to prevent scratching the hole wall during lowering or retrieval.

[0042] Counterweight ball design: Counterweight ball 3 is made of solid stainless steel or lead-plated iron. Its weight is calculated based on the weight of the measuring rope and the friction of the hole wall. It is generally recommended that the weight be between 1kg and 3kg to ensure that it can overcome buoyancy and friction and fall vertically smoothly. The diameter of counterweight ball 3 is a known parameter and should be accurately measured and marked in the device instruction manual or on the surface of the ball.

[0043] In one alternative implementation, to ensure that the device can smoothly enter the borehole, the sum of the diameters of the counterweight iron ball 3 and the hollow float 4 is less than the borehole diameter.

[0044] In this embodiment, the hollow float 4 and the hollow connecting ring 5 are integrally molded using injection molding or blow molding. The hollow float 4 is sealed with air inside and is made of high-pressure resistant and aging-resistant engineering plastics (such as polyethylene) to ensure that it does not deform or leak water under deep water pressure.

[0045] Buoyancy Design: The buoyancy design of the hollow buoy 4 should satisfy: buoyancy > weight of counterweight ball 3 + weight of the portion of measuring rope 1 inside the hole + frictional resistance of the hole wall. This ensures that when the measuring rope slacks, the buoy can quickly rise to the water surface and pull the measuring rope to slide relative to the connecting ring.

[0046] Size restrictions: To prevent the device from getting stuck when passing through the narrowing or breaking zone in the borehole, the sum of the diameter of the counterweight ball 3 and the outer diameter of the hollow float ball 4 should be smaller than the design borehole diameter. It is recommended that the sum of the diameters of the two balls not exceed 70% of the borehole diameter.

[0047] Secondly, embodiments of the present invention provide a method for using an open-air waterhole depth sounding device. The method of using the open-air waterhole depth sounding device includes:

[0048] S1: Tie one end of the measuring rope to the hollow connecting ring, and pass the other end of the measuring rope through the connecting ring to ensure that the measuring rope can slide freely in the connecting ring;

[0049] In this embodiment, a knot (such as a double overhand knot) is tied at one end of the measuring rope 1, which is then passed through the center hole of the hollow connecting ring 5. A metal washer is placed between the knot and the ring, and then the knot is tied again to lock it in place. Alternatively, the end of the measuring rope 1 can be firmly fixed to the hollow connecting ring 5 by pressing a metal sleeve, so as to ensure that the connection will not slip or loosen when subjected to the tension of the counterweight iron ball 3 and the float ball 4.

[0050] Hold the free end (unfixed end) of the measuring rope 1, insert it from below the connecting ring 2, and pull it out from above; at this time, the measuring rope 1 forms a sliding system that runs through the connecting ring 2; check whether the measuring rope 1 slides smoothly in the connecting ring 2 without any jamming.

[0051] S2: Pull up the measuring rope so that the counterweight iron ball and hollow float ball are suspended in the air naturally, and record the first measuring rope reading at the connecting ring;

[0052] In this embodiment, the physical state is as follows: the operator holds the connecting ring 2 (or the free end of the measuring rope) and lifts the entire device off the ground. At this time, under the action of gravity, the counterweight iron ball 3 hangs down naturally, close to the bottom of the connecting ring 2; the hollow float 4 also hangs down, close to the bottom of the hollow connecting ring 5.

[0053] Reading reference: Since the measuring rope 1 is at 0 mark at the hollow connecting ring 5, and the hollow float 4 has a certain height, the measuring rope reading L1 at the connecting ring 2 actually represents the fixed distance between the "lower edge of the counterweight iron ball" and the "upper edge of the float (or the zero point of the measuring rope)" plus the length of the hollow connecting ring 5; this reading is an inherent system parameter of the device, used to eliminate the influence of the device's own size on the calculation.

[0054] Key points of operation: Ensure that the measuring rope is vertical and taut, and read the value with your line of sight perpendicular to the scale on the measuring rope to reduce parallax; the first reading of the measuring rope recorded should remain unchanged after the device is assembled. If any changes are found, check whether the connection is loose.

[0055] S3: Lift the counterweight iron ball and the hollow float ball, and put them into the borehole. When the counterweight iron ball is placed at the bottom of the borehole, gently pull the measuring rope, record the second measuring rope reading at the borehole opening, and calculate the depth of the borehole through geometric relationships.

[0056] In this embodiment, the lowering operation is as follows: the operator is positioned in a safe position at the borehole opening, holds the free end of the measuring rope 1, and slowly releases the measuring rope, allowing the counterweight iron ball 3 and the hollow float 4 to slowly sink into the hole by their own weight.

[0057] Bottom-out judgment: When you feel the rope suddenly loosen (resistance decrease) as it is lowered, it means that the counterweight ball 3 has reached the bottom of the hole, and you should stop lowering it at this time;

[0058] Tightening and reading: The operator gently pulls the free end of the measuring rope 1 upwards. The force should be just enough to overcome the weight of the counterweight ball 3 and the measuring rope, so that the measuring rope 1 is taut and the counterweight ball 3 is just a few millimeters away from the bottom of the hole. At this time, the counterweight ball 3 is in a suspended and taut state, and the hollow float 4 is also pulled tightly against the bottom of the counterweight ball 3 (or the bottom of the connecting ring 2) by the measuring rope, with no gap between the two.

[0059] Physical meaning: At this time, the tension point (connecting ring 2) on measuring rope 1 is located at the orifice, and the zero point of the measuring rope is located near the bottom of the orifice; the second measuring rope reading represents the length of the measuring rope from the zero point of the measuring rope to the orifice.

[0060] S4: Loosen the measuring rope, wait for the counterweight iron ball to sink to the bottom, and the hollow float will float to the water surface under the action of buoyancy. Gently tighten the measuring rope, record the reading of the third measuring rope at the borehole opening, and calculate the water depth and the distance of the water level from the borehole opening through geometric relationships.

[0061] In this embodiment, the measuring rope is relaxed: after recording the second measuring rope reading, the operator slowly releases the measuring rope 1 in his hand, so that the measuring rope is completely relaxed in the hole and no longer provides upward tension.

[0062] Buoy rises: Due to the loss of tension and the counterweight ball 3 remaining at the bottom of the hole, the hollow buoy 4 begins to slide upward along the measuring rope 1 under the action of its own buoyancy until its top touches the water surface and the force balances, at which point it stops rising; at this time, the hollow buoy 4 is suspended in the water, the counterweight ball 3 sinks to the bottom of the hole, and the measuring rope between the two is in a slack state.

[0063] Secondary tightening: After the measuring rope stabilizes (about 10-20 seconds), the operator slowly tightens the measuring rope 1 again; at this time, the tension mainly acts on the hollow float 4, pressing it slightly downwards to put it in a tensile state, while the counterweight iron ball 3 remains stationary at the bottom of the hole; this step is to eliminate the measurement error caused by the slack of the measuring rope, so that the measuring rope can accurately transmit the information of the water surface position to the hole opening.

[0064] Physical meaning: At this time, the connecting ring 2 (the tension point of the measuring rope) is still at the orifice, but the zero point of the measuring rope (the hollow connecting ring 5) has been pulled to the water surface position.

[0065] In one optional implementation, the formula for calculating the depth of the borehole is:

[0066]

[0067] In the formula, The depth of the borehole; This is the first measurement rope reading; This is the second measuring rope reading; The diameter of the counterweight iron ball.

[0068] In one alternative implementation, the formula for calculating the water depth within the borehole is:

[0069]

[0070] In the formula, The water depth inside the borehole; This is the second measuring rope reading; This is the reading from the third measuring rope; The diameter of the counterweight iron ball.

[0071] In one optional implementation, the formula for calculating the distance between the water level and the orifice is:

[0072]

[0073] In the formula, This represents the distance from the water level to the orifice. This is the first measurement rope reading; This is the second measuring rope reading; This is the reading from the third measuring rope.

[0074] Beneficial effects:

[0075] It can accurately determine the depth of water holes and the water depth inside the holes, providing accurate data support for interval charging; the device has a simple structure, is easy to operate, has low manufacturing cost, and can be reused; it greatly improves the efficiency and accuracy of water hole measurement, helps to optimize the charging structure, reduce blasting costs, and improve blasting effect.

[0076] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable hardware devices (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0077] The embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (apparatus), and computer program products according to embodiments of the invention. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0078] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0079] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0080] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. "And / or" indicates that either one or both can be chosen. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0081] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An open-air waterhole depth sounding device, characterized in that, The device includes: The measuring rope (1), connecting ring (2), counterweight iron ball (3), hollow float (4) and hollow connecting ring (5); the connecting ring (2) is welded and fixed to the counterweight iron ball (3), and the hollow float (4) is integrally formed with the hollow connecting ring (5); one end of the measuring rope (1) is connected to the hollow connecting ring (5), and the other end passes through the connecting ring (2).

2. The open-air waterhole depth measuring device according to claim 1, characterized in that, The measuring rope (1) is made of nylon and is cylindrical. The surface of the measuring rope (1) is marked with length scales. The scale at the contact point between the measuring rope (1) and the hollow float (4) is 0, and the scale at the other end is the length of the measuring rope. The length of the measuring rope (1) is twice the depth of the borehole being measured.

3. The open-air waterhole depth measuring device according to claim 2, characterized in that, Both the connecting ring (2) and the counterweight ball (3) are made of stainless steel, and the diameter of the connecting ring (2) is larger than the diameter of the measuring rope (1).

4. The open-air waterhole depth measuring device according to claim 3, characterized in that, The sum of the diameters of the counterweight iron ball (3) and the hollow float ball (4) is less than the borehole diameter.

5. A method of using an open-air waterhole depth sounding device, based on the open-air waterhole depth sounding device as described in any one of claims 1-4, characterized in that, The method of use includes: Tie one end of the measuring rope to the hollow connecting ring, and pass the other end of the measuring rope through the connecting ring, ensuring that the measuring rope can slide freely in the connecting ring; Pull up the measuring rope so that the counterweight iron ball and the hollow float are suspended in the air, and record the first measuring rope reading at the connecting ring; Lift the counterweight iron ball and the hollow float ball, and place them into the borehole. When the counterweight iron ball is placed at the bottom of the borehole, gently tighten the measuring rope, record the second measuring rope reading at the borehole opening, and calculate the depth of the borehole using geometric relationships. Loosen the measuring rope and wait for the counterweight iron ball to sink to the bottom. The hollow float will then rise to the surface under the action of buoyancy. Gently tighten the measuring rope and record the reading of the third measuring rope at the borehole opening. Calculate the water depth inside the borehole and the distance between the water level and the opening opening using geometric relationships.

6. The method of using the open-air waterhole depth measuring device according to claim 5, characterized in that, The formula for calculating the depth of the borehole is: ； In the formula, The depth of the borehole; This is the first measurement rope reading; This is the second measuring rope reading; The diameter of the counterweight iron ball.

7. The method of using the open-air waterhole depth measuring device according to claim 6, characterized in that, The formula for calculating the water depth inside the borehole is: ； In the formula, The water depth inside the borehole; This is the second measuring rope reading; This is the reading from the third measuring rope; The diameter of the counterweight iron ball.

8. The method of using the open-air waterhole depth measuring device according to claim 7, characterized in that, The formula for calculating the distance between the water level and the orifice is: ； In the formula, This represents the distance from the water level to the orifice. This is the first measurement rope reading; This is the second measuring rope reading; This is the reading from the third measuring rope.

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