Method and device for detecting hole depth and hole inclination of drill hole based on laser ranging and electronic compass

Abstract

The invention discloses a method for detecting the depth and inclination of a drilled hole based on laser ranging and an electronic compass, and relates to the field of engineering measurement. The method comprises the following steps: step 1, opening a measuring device; step 2, inputting allowable extreme values of allowable deviations of the designed drilling inclination, the inclination angle, the actual drilling hole bottom and / or the hole distance; step 3, turning on a laser emission button; 4, when the laser ranging result is the maximum ranging result, a reading button is pressed down; 5, the included angle between the designed drill hole and the actual drill hole, the drill hole deviation and / or the hole bottom offset distance are / is calculated; comparing the drill hole deviation and / or the hole bottom offset distance with an allowable extreme value of the allowable deviation; judging whether the drilled hole is qualified or not; ending the measurement; according to the invention, the integrated measurement of the hole depth and the hole inclination is realized, the operation is simple and fast, and the measurement and inspection efficiency is greatly improved. The invention further relates to a device for detecting the hole depth and hole inclination of the drill hole based on laser ranging and the electronic compass.

Description

Technical Field

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

[0002] The traditional method of measuring the depth and inclination of the slope and tunnel pre-splitting blasting holes, and the lock anchor holes at the tunnel entrance needs to be carried out separately: the 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 inclinometer probe to the inclinometer readout instrument through a control cable, tests the borehole inclination data section by section, and records the borehole inclination measurement data of each section through the readout instrument; 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 sections and cannot accurately obtain the overall borehole inclination value of the whole hole; secondly, for nearly horizontal drilling and elevation drilling, the control 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 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 depth and inclination of a drilled hole based on laser ranging and an electronic compass.

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

[0008] In order to achieve the above first purpose, the technical solution of the present invention is: a method for inspecting the depth and inclination of a drilled hole 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, placing the measuring device at the hole mouth and keeping the measuring device consistent 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 is the maximum ranging, 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: the laser-measured drilling depth, the corresponding laser inclination, inclination, and pitch / elevation angle characteristics;

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

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

[0017] Step 9, comparing the borehole inclination 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 borehole inclination and dip angle (α1, β1) are expressed as

[0021] Among them, α0 and α1∈[0,360]; β0 and β1∈[-90,90], ± is determined according to 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 drilling hole and the actual drilling hole is:

[0023]

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

[0025] It is the hole inclination deviation between the actual drilling and the designed drilling;

[0026] According to the cosine theorem, calculate the bottom offset between the designed drilling hole and the actual drilling hole:

[0027]

[0028] L ΔIndicates 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 drilled 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 drilled 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 drilled hole depth L by the laser ranging module; the calculator module calculates the drilled hole inclination deviation and / or the hole bottom offset between the designed drilled hole and the actual drilled hole according to 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 the traditional method, the hole depth and hole inclination need to be measured separately; compared with the traditional method, 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, 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 according to the laser azimuth through an integrated electronic compass, thereby solving the difficulties in measuring elevation drilling and horizontal drilling and greatly improving 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 hole and the actual hole according to the measured hole depth, inclination and inclination angle; the calculator module can input the designed hole inclination, inclination angle, the allowable extreme value of the allowable deviation of the actual 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 between the actual hole and the designed hole and the hole bottom offset between the designed hole and the actual hole, thereby greatly improving the efficiency and measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0035] Figure 2 It is a 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 true north direction. DETAILED DESCRIPTION

[0040] The following detailed description of the implementation of the present invention is made in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention and are only given as examples. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.

[0041] Referring to the attached drawings, it can be seen that the method for inspecting the depth and inclination of a drilled hole based on laser ranging and an electronic compass is characterized in that it comprises 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, placing the measuring device at the hole mouth and keeping the measuring device consistent 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 is the maximum ranging, 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: the laser-measured drilling depth, the corresponding laser inclination, inclination, and pitch / elevation angle characteristics;

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

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

[0050] Step 9, comparing the borehole inclination 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 borehole inclination and dip angle (α1, β1) are expressed as

[0054] Among them, α0 and α1∈[0,360]; β0 and β1∈[-90,90], ± is determined according to 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 drilling hole and the actual drilling hole is:

[0056]

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

[0058]

[0059] It is the hole inclination deviation between the actual drilling and the designed drilling;

[0060] According to the cosine theorem, calculate the bottom offset between the designed drilling hole and the actual drilling hole:

[0061]

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

[0063] The 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 comprises a laser ranging module, an electronic compass module, a calculator module and a display screen, wherein the laser ranging module measures the depth L of the drilled hole; the electronic compass module measures the inclination and inclination angle corresponding to the maximum hole depth ray based on the measurement of the depth L of the drilled hole by the laser ranging module; the calculator module calculates the inclination deviation and / or the bottom offset of the hole between the designed drilled hole and the actual drilled hole according to the measured hole depth, inclination and inclination angle; and the display screen displays the pitch / elevation angle.

[0064] Example 1

[0065] like Figure 4 As shown, for a rock slope project, the designed single-stage slope height is 10m, the slope inclination is 120°, and the excavation slope ratio is 1:0.2. The excavation is carried out using the 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] From the above geometric principle, we know that L = 10m, the hole bottom distance error is about 30cm, and the deflection error is about 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 allowable extreme value of the allowable deviation of the actual drilling bottom and / or hole spacing is 30 cm;

[0069] Step 3, placing the measuring device at the hole mouth and keeping the measuring device consistent 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 ranging value, 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 read data includes: laser measured hole depth 10.1m, corresponding laser inclination 123.4°, dip angle 76.2°, select the depression angle;

[0073] Step 7, calculate that the angle between the designed drilling hole and the actual drilling hole is 2.6°;

[0074] Step 8, calculate that the bottom offset between the designed borehole and the actual borehole is 45.9 cm;

[0075] Step 9: The bottom offset of the designed borehole and the actual borehole is 45.9 cm, which is greater than the allowable maximum 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 an axial direction of the cavern at 158°. The pre-splitting blasting drilling construction plan is used for excavation. 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 extreme value of the allowable deviation of the actual drilling bottom and / or hole spacing of 10 cm;

[0083] Step 3, placing the measuring device at the hole mouth and keeping the measuring device consistent 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 is the maximum ranging, keep the measuring device stable and record the data as 4.05m;

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

[0087] Step 7, calculate that the angle between the designed drilling hole and the actual drilling hole is 0.64°;

[0088] Step 8, calculate that the bottom offset between the designed drilling hole and the actual drilling hole is 4.5 cm;

[0089] Step 9: The bottom offset of the designed borehole and the actual borehole is 4.5 cm, which is less than the allowable maximum 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 the operation is simple and quick, which greatly improves the efficiency of measurement and inspection; by scrapping unqualified holes and re-drilling, 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 according to the laser azimuth through an integrated electronic compass, thereby solving the difficulties in measuring elevation drilling and horizontal drilling and greatly improving 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 hole and the actual hole according to the measured hole depth, inclination and inclination angle; the calculator module can input the designed hole inclination, inclination angle, the allowable extreme value of the allowable deviation of the actual 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 between the actual hole and the designed hole and the hole bottom offset between the designed hole and the actual hole, thereby greatly improving the efficiency and measurement accuracy.

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

Claims

1. A method for inspecting the depth and inclination of a drilled hole 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, placing the measuring device at the hole mouth and keeping the measuring device consistent 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 is the maximum ranging, 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: the laser-measured drilling depth, the corresponding laser inclination, inclination, and pitch / elevation angle characteristics; Step 7, calculating the angle between the designed drilling hole and the actual drilling hole; Step 8, calculating the borehole inclination deviation and / or the hole bottom offset between the designed borehole and the actual borehole; Step 9, comparing the borehole inclination 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.

2. The method for inspecting the depth and inclination of a drilled hole based on laser ranging and electronic compass according to claim 1 is characterized in that: In step 7, according to the space vector theory, the designed drilling inclination and inclination angle (α0, β0) are expressed as: The measured borehole inclination and dip angle (α1, β1) are expressed as Among them, α0 and α1∈[0,360]; β0 and β1∈[-90,90], ± is determined according to 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 drilling hole and the actual drilling hole is:

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

4. A device for inspecting the depth and inclination of a drilled hole based on laser ranging and electronic compass, characterized in that: The measuring device comprises 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 inclination angle corresponding to the maximum borehole depth ray based on the borehole depth L measured by the laser ranging module; the calculator module calculates the borehole inclination deviation and / or the hole bottom offset between the designed borehole and the actual borehole according to the measured hole depth, inclination and inclination angle; and the display screen displays the pitch / elevation angle.

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