Portable device and method for measuring effective aperture of forward and backward hammers of gravity dam

Abstract

The invention belongs to the technical field of engineering structure safety monitoring, and particularly relates to a portable gravity dam forward and backward hammer effective aperture measuring device and method. The measuring device comprises a supporting mechanism and a measuring mechanism. The measuring mechanism is installed on the supporting mechanism. According to the invention, high-precision safe monitoring drilling is realized through six steps of mounting the supporting mechanism at the orifice to be measured, centering and leveling the supporting mechanism, mounting the measuring mechanism, reading the initial value, reading the measured value and calculating the effective aperture. The device is simple in structure and convenient to operate, and solves the problem that in the prior art, verticality and effective plumb bob diameter measurement needs to be carried out by high-end precision equipment, and detection is relatively inconvenient. According to the invention, the verticality and the effective plumb diameter measurement efficiency are improved, and the investment of high-end precision equipment is saved. The drilling precision can be dynamically adjusted and measured.

Description

Technical Field

[0001] This invention belongs to the field of engineering structure safety monitoring technology, specifically relating to a portable gravity dam inverted hammer effective aperture measuring device and method. Background Technology

[0002] As people pay increasing attention to the safety of engineering structures, the requirements for the survival rate and data accuracy of safety monitoring instruments are also becoming higher. As large-scale safety monitoring equipment, vertical drilling is characterized by high measurement accuracy, high installation difficulty, and low survival rate, resulting in numerous installation failures among safety monitoring equipment. The main reason for these failures is that vertical drilling requires a verticality deviation of no more than 1‰, and the effective vertical space diameter after the protective casing is lowered must be no less than 100mm, making it difficult to achieve a high success rate. Summary of the Invention

[0003] This invention provides a portable device and method for measuring the effective borehole diameter of gravity dam forward and reverse hammers. The purpose is to provide a device and method for controlling the quality of the drilling process, measuring the effective borehole diameter in real time and dynamically adjusting it during the drilling process, thereby improving the drilling quality, increasing the survival rate of forward and reverse hammer installations, reducing losses caused by drilling failures, and shortening the construction period.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A portable gravity dam inverted hammer effective aperture measuring device includes a support mechanism and a measuring mechanism; the measuring mechanism is mounted on the support mechanism.

[0005] The support mechanism includes an adjustable bracket, a flange, and a level bubble; the flange is connected to the adjustable bracket; the level bubble is connected to the flange surface; and a measuring mechanism is connected to the flange.

[0006] The measuring mechanism includes an angle disc, a scale, and a metal plumb bob; the angle disc is mounted on a support mechanism; the scale is detachably connected to the diameter line of the angle disc; and the metal plumb bob slides along the edge of the scale.

[0007] The angle dial is a 360-degree angle dial; the scale is a thickened stainless steel scale ruler; its thickness is not less than 3mm.

[0008] The support mechanism includes an adjustable bracket, a flange, and a level bubble; the flange is connected to the adjustable bracket; the level bubble is connected to the flange surface; a measuring mechanism is connected to the flange; the measuring mechanism includes an angle disc, a scale, and a metal plumb bob; the angle disc is mounted on the support mechanism; the scale is detachably connected to the diameter line of the angle disc; the metal plumb bob slides along the edge of the scale; the angle disc is a 360-degree angle disc; the scale is a thickened stainless steel ruler with a thickness of not less than 3mm.

[0009] A method for measuring the effective aperture of a portable gravity dam's inverted and upright hammer, using a portable gravity dam inverted and upright hammer effective aperture measuring device, includes the following steps: Step 1: Install the support mechanism at the orifice to be measured; Step 2: Center and level the support mechanism; Step 3: Install the measuring mechanism; Install the angle plate on the flange, and fix the scale to the diameter line of the angle plate; Step 4: Read the initial value; Step 5: Read the measurement value; Step 6: Calculate the effective aperture.

[0010] The specific method for aligning and leveling the support mechanism in step two is to make the flange in the support mechanism horizontal and concentric with the hole to be tested; the method for installing the measuring mechanism in step three is to install the angle plate on the flange; fix one end of the scale at 0° on the angle plate and the other end at 180° on the angle plate.

[0011] The method for reading the initial value in step four is to slide the metal plumb bob along the scale toward 0° on the angle dial; after the metal plumb bob touches the hole wall and stabilizes, the value of the metal wire in the metal plumb bob on the scale is the initial value.

[0012] The method for reading the measurement value in step five is to slide the metal plumb bob that has stabilized after touching the hole wall in step four along the scale towards the 180° direction of the angle plate until the metal plumb bob touches the hole wall and stabilizes. The value at which the metal wire in the metal plumb bob is located on the scale at this moment is the measurement value.

[0013] The method for calculating the effective aperture in step six is ​​as follows: Effective diameter 1 = Measured value - Initial value + Plumb bob diameter; Adjust the scale so that one end is fixed at 10° on the angle plate and the other end is fixed at 190° on the angle plate. Obtain the measurement value and initial value again according to the methods in steps four and five to obtain the effective diameter 2. Repeat the above steps until one end of the scale returns to the starting measurement position. Compare the measured effective diameters and select the minimum value as the effective hole diameter of the monitoring section. If it is greater than the design value, the hole diameter is qualified and drilling can continue. If it is less than the design value, the hole diameter is unqualified. Cement grout is used to backfill this section of the hole. After solidification, drilling is restarted.

[0014] Beneficial effects: 1. This invention enables high-precision safety monitoring of boreholes.

[0015] 2. The device of the present invention has a simple structure and is easy to operate, which solves the problem that the measurement of verticality and effective plumb bob diameter in the prior art requires the transportation of high-precision equipment and is inconvenient to test.

[0016] 3. This invention improves verticality and the efficiency of effective plumb bob diameter measurement, saving investment in high-end precision equipment.

[0017] 4. This invention can dynamically adjust the accuracy of borehole measurement.

[0018] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart of the measurement process of the present invention.

[0021] Figure 2 This is a schematic diagram of the support system in the device of the present invention.

[0022] Figure 3 is a schematic diagram of the measurement system in the device of the present invention.

[0023] In the diagram: 1. Adjustable bracket; 2. Flange; 3. Level bubble; 4. Angle dial; 5. Ruler; 6. Metal plumb bob. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1: according to Figure 1 and Figure 2 The portable gravity dam inverted hammer effective aperture measuring device shown is characterized by comprising a support mechanism and a measuring mechanism; the measuring mechanism is mounted on the support mechanism.

[0026] In practical use, firstly, a support mechanism is installed at the borehole to be tested, and the support mechanism is adjusted to ensure it is horizontal and its center point is concentric with the borehole. Next, the measuring mechanism is installed on the support mechanism. Subsequently, multiple measurements are taken at different locations using the measuring mechanism, obtaining an initial value and a measured value each time. The effective diameter of the borehole is calculated using these initial and measured values. The measured effective diameters are compared, and the minimum value is selected as the effective borehole diameter of the monitoring section. If the minimum effective diameter is greater than the design value, the borehole diameter is acceptable, and drilling can continue. If the minimum effective diameter is less than the design value, the borehole diameter is unacceptable, and the section is backfilled with cement grout. After solidification, drilling resumes.

[0027] In some embodiments, the support mechanism includes an adjustable bracket 1, a flange 2, and a level bubble 3; the flange 2 is connected to the adjustable bracket 1; the level bubble 3 is connected to the surface of the flange 2; and a measuring mechanism is connected to the flange 2.

[0028] The adjustable bracket 1 in this embodiment is an adjustable triangular bracket in the prior art, which consists of three freely telescopic and fixed rods, and is hinged to the flange 2 by screws to realize its height adjustment function.

[0029] In practical use, first install the adjustable bracket 1 on the orifice to be measured, and adjust the adjustable bracket 1 to make the flange 2 horizontal and concentric with the orifice to be measured. This ensures the accuracy of subsequent measurements.

[0030] In some embodiments, the measuring mechanism includes an angle disk 4, a scale 5, and a metal plumb bob 6; the angle disk 4 is mounted on a support mechanism; the scale 5 is detachably connected to the diameter line of the angle disk 4; and the metal plumb bob 6 slides along the edge of the scale 5.

[0031] Furthermore, the angle dial 4 is a 360-degree angle dial; the scale 5 is a thickened stainless steel scale ruler with a thickness of not less than 3mm.

[0032] In actual use, after the support mechanism is installed correctly, the angle plate 4 is installed on the flange 2; one end of the scale 5 is fixed at 0° of the angle plate 4, and the other end is fixed at 180° of the angle plate 4; then, the metal plumb bob 6 is slid along the scale 5 towards 0° of the angle plate 4; after the metal plumb bob 6 touches the hole wall and stabilizes, the value of the metal wire in the metal plumb bob 6 at the scale 5 is read, and this value is used as the initial value; then, the metal plumb bob 6, which has stabilized after touching the hole wall, is slid along the scale towards 180° of the angle plate 4 until it touches the hole wall and stabilizes, and the value of the metal wire in the metal plumb bob 6 at the scale 5 at this moment is read, and this value is the measured value. Afterwards, the effective hole diameter is calculated. The specific method for calculating the effective hole diameter is as follows: Effective diameter 1 = Measured value - Initial value + Plumb bob diameter; Subsequently, one end of the scale 5 is fixed at 10° on the angle plate 4, and the other end is fixed at 190° on the angle plate 4. The measured value after the adjustment and the initial value are obtained again according to the aforementioned method to obtain the effective diameter 2. The above steps are repeated, with the angle moved at 10° intervals each time, until one end of the scale 5 reaches the 180° position. The measured effective diameters are compared, and the minimum effective hole diameter is selected as the effective hole diameter of the monitoring section of the monitoring hole. If the minimum effective hole diameter is greater than the design value, the hole diameter is qualified and drilling can continue. If the minimum effective hole diameter is less than the design value, the hole diameter is unqualified, cement grout is backfilled into this section of the borehole, and drilling is restarted after solidification.

[0033] The scale ruler 5 is made of thickened stainless steel with a thickness of not less than 3mm. In addition to being easy to measure, it also prevents bending under force from affecting the test results.

[0034] Example 2: according to Figure 1 Figure 3 illustrates a method for measuring the effective aperture of a portable gravity dam's inverted and upright hammer. This method utilizes a portable gravity dam inverted and upright hammer effective aperture measuring device and includes the following steps: Step 1: Install the support mechanism at the orifice to be measured; Step 2: Center and level the support mechanism; Step 3: Install the measuring mechanism; Install the 360-degree angle plate 4 on the flange 2, and place the thickened stainless steel scale 5 on the diameter line of the 360-degree angle plate 4 and fix it. Step 4: Read the initial value; Step 5: Read the measurement value; Step 6: Calculate the effective aperture.

[0035] Furthermore, the specific method for centering and leveling the support mechanism in step two is to make the flange 2 in the support mechanism horizontal and concentric with the hole to be tested; the method for installing the measuring mechanism in step three is to install the angle plate 4 on the flange 2; fix one end of the scale 5 at 0° of the angle plate 4 and the other end at 180° of the angle plate 4.

[0036] Furthermore, the method for reading the initial value in step four is to slide the metal plumb bob 6 along the scale 5 towards 0°; after the metal plumb bob 6 touches the hole wall, and after the metal plumb bob 6 stabilizes, the value of the metal wire in the metal plumb bob 6 at the scale 5 is the initial value.

[0037] Furthermore, the method for reading the measurement value in step five is to slide the metal plumb bob 6, which stabilized after touching the hole wall in step four, along the scale towards the 180° direction of the angle plate 4 until the metal plumb bob 6 touches the hole wall and stabilizes. The value at which the metal wire in the metal plumb bob 6 is located on the scale 5 at this moment is the measurement value.

[0038] Furthermore, the method for calculating the effective aperture in step six is ​​as follows: Effective diameter 1 = Measured value - Initial value + Plumb bob diameter; Adjust the scale 5 so that one end is fixed at 10° on the angle plate 4 and the other end is fixed at 190° on the angle plate 4. Obtain the measured value and the initial value again according to the method of steps four and five to obtain the effective diameter 2. Repeat the above steps, moving the angle at 10° intervals each time, until one end of the scale 5 reaches the 180° position. Compare the measured effective diameters and select the minimum value as the effective hole diameter of the monitoring section. If it is greater than the design value, the hole diameter is qualified and drilling can continue. If it is less than the design value, the hole diameter is unqualified. Cement grout is used to backfill this section of the hole, and drilling is restarted after solidification.

[0039] In step three of this embodiment, when installing the measuring mechanism, the angle plate 4 is installed on the flange 2, and the scale 5 is fixedly connected to the diameter line of the angle plate 4.

[0040] The support system in this embodiment consists of an adjustable tripod, a stainless steel flange 2, and a spirit level 3. The flange is mounted on the adjustable tripod, which keeps the spirit level on the flange 2 horizontal, providing a level measurement condition for the measurement system.

[0041] This invention achieves high-precision safety monitoring of boreholes through a portable gravity dam upright and inverted plumb bob effective borehole diameter measuring device with a simple structure and convenient operation. The device solves the problem in existing technologies where measuring verticality and effective plumb bob diameter requires transporting high-precision equipment, which is relatively inconvenient.

[0042] This invention improves verticality and the efficiency of effective plumb bob diameter measurement, saving on investment in high-precision equipment. This invention also allows for dynamic adjustment of drilling accuracy.

[0043] Where there is no conflict, those skilled in the art can combine the relevant technical features in the above examples according to the actual situation to achieve the corresponding technical effects. Specific details of the various combinations will not be elaborated here.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0045] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0046] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modifications, equivalent variations, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A portable device for measuring the effective aperture of a gravity dam's positive and negative hammers, characterized in that: It includes a support mechanism and a measuring mechanism; the measuring mechanism is mounted on the support mechanism.

2. The portable gravity dam inverted hammer effective aperture measuring device as described in claim 1, characterized in that: The support mechanism includes an adjustable bracket (1), a flange (2), and a level bubble (3); the flange (2) is connected to the adjustable bracket (1); the level bubble (3) is connected to the flange (2); and a measuring mechanism is connected to the flange (2).

3. The portable gravity dam inverted hammer effective aperture measuring device as described in claim 1, characterized in that: The measuring mechanism includes an angle disc (4), a scale (5), and a metal plumb bob (6); the angle disc (4) is mounted on a support mechanism; the scale (5) is detachably connected to the diameter line of the angle disc (4); and the metal plumb bob (6) slides along the edge of the scale (5).

4. The portable gravity dam inverted hammer effective aperture measuring device as described in claim 3, characterized in that: The angle dial (4) is a 360-degree angle dial; the scale (5) is a thickened stainless steel scale ruler with a thickness of not less than 3mm.

5. The portable gravity dam positive and negative hammer effective aperture measuring device as described in claim 1, characterized in that: The support mechanism includes an adjustable bracket (1), a flange (2), and a level bubble (3); the flange (2) is connected to the adjustable bracket (1); the level bubble (3) is connected to the flange (2); a measuring mechanism is connected to the flange (2); the measuring mechanism includes an angle plate (4), a scale (5), and a metal plumb bob (6); the angle plate (4) is mounted on the support mechanism; the scale (5) is detachably connected to the diameter line of the angle plate (4); the metal plumb bob (6) slides along the edge of the scale (5); the angle plate (4) is a 360-degree angle plate; the scale (5) is a thickened stainless steel ruler with a thickness of not less than 3mm.

6. A method for measuring the effective aperture of a portable gravity dam's inverted and upright hammer, characterized in that: The portable gravity dam positive and negative hammer effective aperture measuring device as described in claim 5 includes the following steps: Step 1: Install the support mechanism at the orifice to be measured; Step 2: Center and level the support mechanism; Step 3: Install the measuring mechanism; Install the angle plate (4) on the flange (2), and fix the scale (5) on the diameter line of the angle plate (4); Step 4: Read the initial value; Step 5: Read the measurement value; Step 6: Calculate the effective aperture.

7. The method for measuring the effective aperture of a portable gravity dam's positive and negative hammer as described in claim 6, characterized in that: The specific method for centering and leveling the support mechanism in step two is to make the flange (2) in the support mechanism horizontal and concentric with the hole to be tested; the method for installing the measuring mechanism in step three is to install the angle plate (4) on the flange (2); fix one end of the scale (5) at 0° of the angle plate (4) and the other end at 180° of the angle plate (4).

8. The method for measuring the effective aperture of a portable gravity dam's positive and negative hammer as described in claim 6, characterized in that: The method for reading the initial value in step four is to slide the metal plumb bob (6) along the scale (5) toward the 0° direction of the angle plate (4); after the metal plumb bob (6) touches the hole wall, and after the metal plumb bob (6) stabilizes, the value of the metal wire in the metal plumb bob (6) located on the scale (5) is the initial value.

9. The method for measuring the effective aperture of a portable gravity dam's positive and negative hammer as described in claim 6, characterized in that: The method for reading the measurement value in step five is to slide the metal plumb bob (6) that has stabilized after touching the hole wall in step four along the scale towards the 180° direction of the angle plate (4) until the metal plumb bob (6) touches the hole wall and stabilizes. Then, read the value of the metal wire in the metal plumb bob (6) at the scale (5) at this moment, which is the measurement value.

10. The method for measuring the effective aperture of a portable gravity dam's positive and negative hammer as described in claim 6, characterized in that: The method for calculating the effective aperture in step six is ​​as follows: Effective diameter 1 = Measured value - Initial value + Plumb bob diameter; Adjust one end of the scale (5) to be fixed at 10° on the angle plate (4), and the other end to be fixed at 190° on the angle plate (4). Obtain the measured value and the initial value again according to the methods in steps four and five to obtain the effective diameter 2. Repeat the above steps until one end of the scale (5) returns to the starting measurement position. Compare the measured effective diameters and select the minimum value as the effective diameter of the monitoring section of the monitoring hole. If it is greater than the design value, the diameter is qualified and drilling can continue. If it is less than the design value, the diameter is unqualified. Cement grout is used to backfill the section of the hole, and drilling is restarted after solidification.

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