Method and device for inspecting deep hole inclination of drilled holes based on laser ranging and electronic compass

Abstract

The present invention relates to a method for inspecting the depth and inclination of a drilled hole based on laser ranging and an electronic compass, and relates to the field of engineering surveying. The method comprises the following steps: Step 1, turning on a measuring device; Step 2, inputting the designed drilling inclination, inclination angle, and the allowable extreme value of the allowable deviation of the actual drilling bottom and / or hole spacing; Step 3, turning on a laser emission button; Step 4, when the laser ranging result is the maximum distance, pressing a read button; Step 5, calculating the angle between the designed drilling hole and the actual drilling hole, the drilling hole inclination deviation, and / or the hole bottom offset; comparing the drilling hole inclination deviation and / or the hole bottom offset with the allowable extreme value of the allowable deviation; determining whether the drilling is qualified; and ending the measurement. The present invention realizes integrated measurement of hole depth and hole inclination, and is simple and quick to operate, greatly improving the efficiency of measurement and inspection. The present invention also relates to a device for inspecting the depth and inclination of a drilled hole based on laser ranging and an electronic compass.

Description

Technical Field

[0001] The present invention relates to the field of engineering surveying, and more specifically to a method for inspecting the inclination of a deep hole drilled based on laser ranging and an electronic compass. The present invention also relates to a device for inspecting the inclination of a deep hole drilled based on laser ranging and an electronic compass. Background Art

[0002] The traditional method of measuring the depth and inclination of slopes and tunnel pre-splitting blasting holes, as well as the lock anchor holes at the tunnel entrance, requires separate measurements: hole depth is mainly measured by measuring the length of the drill rod or using a measuring rope; the borehole inclination is measured in sections using a borehole inclinometer. The traditional method requires separate measurements of hole depth and hole inclination, which is inefficient.

[0003] The borehole inclinometer places an inclinometer probe in the hole, connects the probe to the inclinometer readout through a control cable, tests the hole inclination data section by section, and records the hole inclination measurement data of each section through the readout; when the inclinometer probe slides and measures section by section in the borehole, the change in the inclination angle of each depth section can be read through the scale marked on the control cable.

[0004] However, there are some shortcomings. First, the borehole inclinometer can only measure the borehole inclination data in segments and cannot accurately obtain the overall borehole inclination value; second, for near-horizontal drilling and elevation drilling, the operation is difficult and auxiliary measures are required, and the test efficiency is low.

[0005] Therefore, it is necessary to develop a method and device for integrated measurement of hole depth and hole inclination based on laser ranging and electronic compass, which is simple and quick to operate and can be used to inspect the hole depth and hole inclination. Summary of the Invention

[0006] The first purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a method for inspecting the inclination of a deep hole drilled based on laser ranging and an electronic compass.

[0007] The second purpose of the present invention is to provide a device for inspecting the inclination of a deep hole of a drilled hole based on laser ranging and an electronic compass.

[0008] In order to achieve the above-mentioned first purpose, the technical solution of the present invention is: a method for inspecting the inclination of a deep hole drilled based on laser ranging and an electronic compass, characterized in that it includes the following steps:

[0009] Step 1: Turn on the measuring device;

[0010] Step 2: Input the designed drilling inclination, inclination angle, and the allowable extreme value of the allowable deviation of the actual drilling bottom and / or hole spacing;

[0011] Step 3: Place the measuring device at the hole mouth and keep the measuring device aligned with the drilling axis;

[0012] Step 4: Turn on the laser emission button and observe the laser ranging results on the display screen;

[0013] Step 5: When the laser ranging result reaches the maximum ranging value, keep the measuring device stable;

[0014] Step 6: Observe the ray inclination and inclination. When the data remains stable, press the read button to read the data including: laser-measured drilling depth, corresponding laser inclination, inclination, and pitch / elevation angle characteristics;

[0015] Step 7, calculating the angle between the designed drill hole and the actual drill hole;

[0016] Step 8, calculating the drilling hole deviation and / or hole bottom offset between the designed drilling hole and the actual drilling hole;

[0017] Step 9, comparing the drill hole deviation and / or the hole bottom offset with the allowable extreme value of the allowable deviation;

[0018] Step 10, determining whether the drilling is qualified;

[0019] Step 11, end the measurement.

[0020] In the above technical solution, in step 7, according to the space vector theory, the designed drilling inclination and inclination angle (α0, β0) are expressed as: The measured drilling inclination and dip angle (α1, β1) are expressed as

[0021] Where α0 and α1∈[0,360]; β0 and β1∈[-90,90], ± is determined by the pitch / elevation angle, when it is a pitch angle, it is +, when it is an elevation angle, it is -; L represents the drilling depth;

[0022] According to the space vector angle formula, the angle between the designed drill hole and the actual drill hole is:

[0023]

[0024] In the above technical solution, in step 8, the hole deviation between the actual drilling and the designed drilling is calculated:

[0025] The deviation between the actual drilling and the designed drilling;

[0026] According to the law of cosines, calculate the bottom offset between the designed drill hole and the actual drill hole:

[0027]

[0028] L Δ Indicates the bottom offset between the designed drill hole and the actual drill hole.

[0029] In order to achieve the above-mentioned second purpose, the technical solution of the present invention is: a device for inspecting the depth and inclination of a drill hole based on laser ranging and an electronic compass, characterized in that the measuring device includes a laser ranging module, an electronic compass module, a calculator module, and a display screen, wherein the laser ranging module measures the drill hole depth L; the electronic compass module measures the inclination and inclination angle corresponding to the maximum hole depth ray based on the measurement of the drill hole depth L by the laser ranging module; the calculator module calculates the drill hole inclination deviation and / or the hole bottom offset between the designed drill hole and the actual drill hole based on the measured hole depth, inclination and inclination angle; and the display screen displays the pitch / elevation angle.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] 1) In traditional methods, hole depth and hole inclination need to be measured separately. Compared with traditional methods, the present invention realizes the integrated measurement of hole depth and hole inclination, and the operation is simple and fast, which greatly improves the efficiency of measurement and inspection. By scrapping unqualified holes and re-drilling them, the construction quality is greatly improved and the support cost is saved.

[0032] 2) The present invention uses laser ranging to obtain hole depth and hole inclination data based on the laser azimuth through an integrated electronic compass, which solves the difficulties in measuring elevation drilling and horizontal drilling and greatly improves efficiency and measurement accuracy.

[0033] 3) The calculator module of the present invention has a built-in calculation formula for calculating the hole inclination deviation and / or hole bottom offset between the designed drilled hole and the actual drilled hole based on the measured hole depth, inclination and inclination angle; the calculator module can input the designed drilled hole inclination, inclination angle, the allowable extreme value of the allowable deviation of the actual drilled hole bottom and / or hole distance, and read the measurement data of the laser ranging module and the electronic compass module, and automatically calculate the hole inclination deviation and the hole bottom offset between the actual drilled hole and the designed drilled hole, thereby greatly improving efficiency and measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is the technical roadmap of the present invention.

[0035] Figure 2 Schematic diagram of the device of the present invention.

[0036] Figure 3 It is a measurement schematic diagram of the present invention.

[0037] Figure 4 This is an example diagram of unqualified drilling in Example 1.

[0038] Figure 5 This is an example diagram of a qualified drilling hole in Example 2.

[0039] in, Figure 3 The N in represents the north direction. DETAILED DESCRIPTION

[0040] The following detailed description of the embodiments of the present invention is given in conjunction with the accompanying drawings, which do not limit the present invention but are merely examples. The advantages of the present invention will become clearer and easier to understand through the description.

[0041] Referring to the accompanying drawings, it can be seen that the method for inspecting the inclination of a deep hole drilled based on laser ranging and an electronic compass is characterized by comprising the following steps:

[0042] Step 1: Turn on the measuring device;

[0043] Step 2: Input the designed drilling inclination, inclination angle, and the allowable extreme value of the allowable deviation of the actual drilling bottom and / or hole spacing;

[0044] Step 3: Place the measuring device at the hole mouth and keep the measuring device aligned with the drilling axis;

[0045] Step 4: Turn on the laser emission button and observe the laser ranging results on the display screen;

[0046] Step 5: When the laser ranging result reaches the maximum ranging value, keep the measuring device stable;

[0047] Step 6: Observe the ray inclination and inclination. When the data remains stable, press the read button to read the data including: laser-measured drilling depth, corresponding laser inclination, inclination, and pitch / elevation angle characteristics;

[0048] Step 7, calculating the angle between the designed drill hole and the actual drill hole;

[0049] Step 8, calculating the drilling hole deviation and / or hole bottom offset between the designed drilling hole and the actual drilling hole;

[0050] Step 9, comparing the drill hole deviation and / or the hole bottom offset with the allowable extreme value of the allowable deviation;

[0051] Step 10, determining whether the drilling is qualified;

[0052] Step 11, end the measurement.

[0053] In step 7, according to the space vector theory, the designed drilling inclination and inclination angle (α0, β0) are expressed as: The measured drilling inclination and dip angle (α1, β1) are expressed as

[0054] Where α0 and α1∈[0,360]; β0 and β1∈[-90,90], ± is determined by the pitch / elevation angle, when it is a pitch angle, it is +, when it is an elevation angle, it is -; L represents the drilling depth;

[0055] According to the space vector angle formula, the angle between the designed drill hole and the actual drill hole is:

[0056]

[0057] In step 8, the deviation between the actual drilling and the designed drilling is calculated:

[0058]

[0059] The deviation between the actual drilling and the designed drilling;

[0060] According to the law of cosines, calculate the bottom offset between the designed drill hole and the actual drill hole:

[0061]

[0062] L Δ Indicates the bottom offset between the designed drill hole and the actual drill hole.

[0063] A device for inspecting the depth and inclination of a drilled hole based on laser ranging and an electronic compass is characterized in that the measuring device includes a laser ranging module, an electronic compass module, a calculator module, and a display screen, wherein the laser ranging module measures the drilled hole depth L; the electronic compass module measures the inclination and dip angle corresponding to the maximum hole depth ray based on the measurement of the drilled hole depth L by the laser ranging module; the calculator module calculates the drilled hole inclination deviation and / or hole bottom offset between the designed drilled hole and the actual drilled hole based on the measured hole depth, inclination, and dip angle; and the display screen displays the pitch / elevation angle.

[0064] Example 1

[0065] like Figure 4 As shown, a rock slope project has a designed single-level slope height of 10m, a slope inclination of 120°, and an excavation slope ratio of 1:0.2. The excavation is carried out using a pre-splitting blasting drilling construction plan. According to the technical requirements of the bidding technical documents, the over-excavation of the slope shall not exceed 30cm, and under-excavation shall not occur.

[0066] Based on the aforementioned geometric principles, if L = 10 m, the hole bottom distance error is approximately 30 cm, and the deflection error is approximately 1.72°. Considering the measurement accuracy, the deflection error is controlled at 1.7°.

[0067] Step 1: Turn on the measuring device;

[0068] Step 2: Input the designed drilling inclination of 120° and 78.7°, and the maximum allowable deviation of the actual drilling bottom and / or hole spacing is 30 cm;

[0069] Step 3: Place the measuring device at the hole mouth and keep the measuring device aligned with the drilling axis;

[0070] Step 4: Turn on the laser emission button and observe the laser ranging results on the display screen;

[0071] Step 5: When the laser ranging result reaches the maximum range, keep the measuring device stable and record the data as 10.1m;

[0072] Step 6: Observe the ray inclination and dip angle. When the data remains stable, press the read button. The data includes: laser-measured hole depth of 10.1m, corresponding laser inclination of 123.4°, dip angle of 76.2°, and select the depression angle.

[0073] Step 7: Calculate the angle between the designed drill hole and the actual drill hole to be 2.6°;

[0074] Step 8: Calculate the bottom offset between the designed drill hole and the actual drill hole to be 45.9 cm;

[0075] Step 9: The bottom offset of the designed drill hole and the actual drill hole is 45.9 cm, which is greater than the maximum allowable deviation of 30 cm.

[0076] Step 10, determining that the drilling is unqualified;

[0077] Step 11, end the measurement.

[0078] Example 2

[0079] like Figure 5 As shown, a large underground cavern project has a span of 30m, a side wall height of 78m, and a tunnel axis direction of 158°; the excavation is carried out using a pre-splitting blasting drilling construction plan. According to the technical requirements of the bidding technical documents, the excavation requirements for underground caverns are relatively high, over-excavation shall not exceed 10cm, and under-excavation shall not occur. The single cycle length of horizontal blasting drilling is 4m.

[0080] From the above-mentioned geometric principles, we can know that L = 4m, the distance error between the bottom of the hole is about 10cm, and the deflection error shall not be greater than 1.43°; considering the measurement accuracy, the deflection error is controlled at 1.4°.

[0081] Step 1: Turn on the measuring device;

[0082] Step 2: Input the designed drilling inclination of 158°, the inclination of 0°, and the allowable maximum deviation of the actual drilling bottom and / or hole spacing of 10 cm;

[0083] Step 3: Place the measuring device at the hole mouth and keep the measuring device aligned with the drilling axis;

[0084] Step 4: Turn on the laser emission button and observe the laser ranging results on the display screen;

[0085] Step 5: When the laser ranging result reaches the maximum range, keep the measuring device stable and record the data as 4.05m;

[0086] Step 6: Observe the ray inclination and dip angle. When the data remains stable, press the read button. The data read includes: laser-measured hole depth of 4.05m, corresponding laser inclination of 158.5°, dip angle of 0.4°, and selected elevation angle.

[0087] Step 7: Calculate the angle between the designed drill hole and the actual drill hole to be 0.64°;

[0088] Step 8: Calculate the bottom offset between the designed drill hole and the actual drill hole to be 4.5 cm;

[0089] Step 9: The bottom offset of the designed drill hole and the actual drill hole is 4.5 cm, which is less than the maximum allowable deviation of 10 cm.

[0090] Step 10, determining whether the drilling is qualified;

[0091] Step 11, end the measurement.

[0092] According to Example 1 and Example 2, it can be seen that:

[0093] 1) The present invention realizes the integrated measurement of hole depth and hole inclination, and is simple and quick to operate, which greatly improves the efficiency of measurement and inspection; by scrapping unqualified drilled holes and re-drilling them, the construction quality is greatly improved and the support cost is saved.

[0094] 2) The present invention uses laser ranging to obtain hole depth and hole inclination data based on the laser azimuth through an integrated electronic compass, which solves the difficulties in measuring elevation drilling and horizontal drilling and greatly improves efficiency and measurement accuracy.

[0095] 3) The calculator module of the present invention has a built-in calculation formula for calculating the hole inclination deviation and / or hole bottom offset between the designed drilled hole and the actual drilled hole based on the measured hole depth, inclination and inclination angle; the calculator module can input the designed drilled hole inclination, inclination angle, the allowable extreme value of the allowable deviation of the actual drilled hole bottom and / or hole distance, and read the measurement data of the laser ranging module and the electronic compass module, and automatically calculate the hole inclination deviation and the hole bottom offset between the actual drilled hole and the designed drilled hole, thereby greatly improving efficiency and measurement accuracy.

[0096] Other parts not described belong to the prior art.

Claims

1. A method for inspecting the inclination of a deep hole drilled based on laser ranging and electronic compass, characterized in that: The following steps are involved: Step 1: Turn on the measuring device; Step 2: Input the designed drilling inclination, inclination angle, and the allowable extreme value of the allowable deviation of the actual drilling bottom and / or hole spacing; Step 3: Place the measuring device at the hole mouth and keep the measuring device aligned with the drilling axis; Step 4: Turn on the laser emission button and observe the laser ranging results on the display screen; Step 5: When the laser ranging result reaches the maximum ranging value, keep the measuring device stable; Step 6: Observe the ray inclination and inclination. When the data remains stable, press the read button to read the data including: laser-measured drilling depth, corresponding laser inclination, inclination, and pitch / elevation angle characteristics; Step 7, calculating the angle between the designed drill hole and the actual drill hole; Step 8, calculating the drilling hole deviation and / or hole bottom offset between the designed drilling hole and the actual drilling hole; Step 9, comparing the drill hole deviation and / or the hole bottom offset with the allowable extreme value of the allowable deviation; Step 10, determining whether the drilling is qualified; Step 11, end the measurement; In step 7, according to the space vector theory, the designed drilling inclination and inclination angle (α0, β0) are expressed as: The measured drilling inclination and dip angle (α1, β1) are expressed as Where α0 and α1∈[0,360]; β0 and β1∈[-90,90], ± is determined by the pitch / elevation angle, when it is a pitch angle, it is +, when it is an elevation angle, it is -; L represents the drilling depth; According to the space vector angle formula, the angle between the designed drill hole and the actual drill hole is:

2. The method for inspecting the inclination of a deep hole drilled based on laser ranging and electronic compass according to claim 1, characterized in that: In step 8, the deviation between the actual drilling and the designed drilling is calculated: The deviation between the actual drilling and the designed drilling; According to the law of cosines, calculate the bottom offset between the designed drill hole and the actual drill hole: L Δ Indicates the bottom offset between the designed drill hole and the actual drill hole.

3. The device for inspecting the inclination of a deep hole drilled based on laser ranging and electronic compass according to any one of claims 1 to 2, characterized in that: The measuring device includes a laser ranging module, an electronic compass module, a calculator module, and a display screen. The laser ranging module measures the borehole depth L; the electronic compass module measures the inclination and dip angle corresponding to the maximum hole depth ray based on the borehole depth L measured by the laser ranging module; the calculator module calculates the borehole inclination deviation and / or hole bottom offset between the designed borehole and the actual borehole based on the measured hole depth, inclination, and dip angle; and the display screen displays the pitch / elevation angle.

Images