CN115371630B - Simulation test monitoring device for subsidence of top plate of underground roadway - Google Patents
Simulation test monitoring device for subsidence of top plate of underground roadway Download PDFInfo
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- CN115371630B CN115371630B CN202210461553.1A CN202210461553A CN115371630B CN 115371630 B CN115371630 B CN 115371630B CN 202210461553 A CN202210461553 A CN 202210461553A CN 115371630 B CN115371630 B CN 115371630B
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- blind hole
- clamping groove
- support box
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- 238000004088 simulation Methods 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 50
- 238000012544 monitoring process Methods 0.000 abstract description 20
- 230000007774 longterm Effects 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 description 8
- 238000009412 basement excavation Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004379 similarity theory Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention relates to a simulation test monitoring device for subsidence of an underground roadway roof, which has the technical scheme that: the lower plane of the sliding plate (5) is provided with a supporting leg (4) with adjustable height, the upper plane of the sliding plate (5) is provided with a sliding rail (11), and the sliding box (6) is arranged on the upper plane of the sliding plate (5) through the sliding groove and the sliding rail (11). The blind hole wall of the sliding support box (6) is provided with a wire clamping groove (7) along the axial direction, a displacement sensor (9) is arranged in the blind hole of the sliding support box (6), a lead-out wire (10) of the displacement sensor (9) is led out from the wire clamping groove (7), and the upper part of the sliding support box (6) is provided with a fixed sleeve ring (8). And an outgoing line (10) of the displacement sensor (9) is connected with the computer (3) through the data acquisition device (2). The invention has the characteristics of stable structure and convenient use, not only can adjust the number and the positions of the measuring points, but also can realize long-term stable automatic monitoring, and the test result accords with the reality and has wide application range.
Description
Technical Field
The invention belongs to the field of simulation test monitoring devices. In particular to a simulation test monitoring device for the settlement of an underground roadway roof.
Background
In underground exploitation, the tunnel is used as an important channel for ore transportation, ventilation, manual operation and the like, and the stability of the tunnel is a key element influencing the safe and efficient production of mines and is an important guarantee for the normal production of the mines and the safety of personnel and equipment. Due to differences in geological conditions such as surrounding rock properties, occurrence and the like, roadway instability exists in the following different damage forms: bending the top plate or the inclined top, bulging the bottom plate, and caving the upper. The roadway roof accident is a primary accident type of roadway instability and damage due to the concealment and burst property of the roadway roof accident. Therefore, the settlement deformation of the roadway roof is monitored, the roof deformation and damage rule is revealed, and the method has important significance for safe and stable production of underground mines.
The field actual measurement has the defects of long period, high cost, serious limitation by field conditions, lack of extension significance for non-measured areas and the like, the numerical simulation is difficult to restore the actual stress field and the actual geological structure condition, and the calculation result cannot achieve the actual simulation. The simulation test is an experimental research method based on a similarity theory, and is concerned by researchers because the simulation test can reproduce the geological condition and stress condition of the underground roadway, can realize manual control and change of the test condition, and has good controllability, repeatability and reliability.
At present, although few reports are disclosed on a similar simulation device, the monitoring of the displacement inside the model is not solved well all the time. In the existing roof monitoring devices for similar simulation experiments, roof separation meters (Wang Cheng, gao Qian, li Yue), on-site monitoring and analysis of roof separation of anchor rod supporting tunnels [ J ]. Mining engineering, 2006,4 (6): 29-31.), fiber Bragg Grating (FBG) separation monitoring systems (Ni Zhenghua, fang Xinqiu, li Jiawei, and the like, and roof separation monitoring systems based on fiber gratings [ J ]. Instrument technology and sensors, 2013 (2): 68-69+72.) and the like are mostly adopted to analyze tunnel deformation caused by tunnel excavation and subsequent working face stoping. However, when the existing roof separation instrument is used for indoor similar simulation, the roof separation instrument has a simple structure, but has a large size, and cannot adapt to a narrow excavation space of a similar simulation roadway; the measuring error is large, and the micro roof settlement produced in the whole process of the tunnel excavation of the analog simulation experiment cannot be accurately monitored in real time; is difficult to keep stable for a long time and is easy to slip and rotate under the influence of complex conditions in a roadway. The fiber bragg grating separation layer monitoring system is complex in manufacturing process, the tail fiber of the FBG displacement meter is positioned at the bottom, the operation is inconvenient in a narrow simulation space, the installation and fixation are difficult, and the fiber bragg grating separation layer monitoring system cannot be used for monitoring the subsidence of an underground roadway physical similar simulation roof.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and aims to provide a simulation test monitoring device for the settlement of the top plate of the underground roadway, which has low cost, simple structure and reliable monitoring data; the monitoring device not only can adjust the number and the positions of the measuring points, but also can realize long-term stable automatic monitoring, and the test result accords with the reality and has wide application range.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The simulation test monitoring device for the subsidence of the top plate of the underground roadway consists of a displacement sensor device, a data acquisition device and a computer; the displacement sensor assembly is connected with the data acquisition device through the outgoing line, and the data acquisition device is connected with the computer through the data line.
The displacement sensor assembly consists of two pairs of support legs, a sliding plate, n sliding support boxes, a wire clamping groove, a fixed lantern ring, n displacement sensors and outgoing wires, wherein n is a natural number of 2-5.
The slide board is a strip-shaped board, and graduated scales are respectively arranged on two side surfaces along the length direction of the strip-shaped board. The lower plane of the strip-shaped plate is symmetrically provided with 1 pair of support legs near two ends; the upper plane center position of the strip-shaped plate is provided with a sliding rail along the length direction.
The appearance of the sliding support box is cylindrical, a sliding groove is formed in the lower plane of the sliding support box along the diameter direction, the cross section of the sliding groove is the same as the nominal size of the cross section of the sliding rail, and the sliding support box is arranged on the upper plane of the sliding plate through the sliding groove and the sliding rail.
A blind hole is formed in the center of the upper plane of the sliding support box, and the inner diameter of the blind hole is the same as the nominal size of the outer diameter of the displacement sensor; the blind hole wall is provided with a clamping slot along the axial direction, the clamping slot is a rectangular opening, the center line of the cross section of the clamping slot coincides with the radius of the round hole, and the included angle between the center line of the cross section of the clamping slot and the projection of the axis of the chute on the horizontal plane is 75-105 degrees.
The displacement sensor is arranged in the blind hole of the sliding support box, and an outgoing line of the displacement sensor is led out from the wire clamping groove; the fixed lantern ring is sleeved on the upper part of the sliding support box, and the fixed lantern ring is positioned above the outgoing line.
The skateboard comprises: the length is 38-42 cm; the width is 2.5-2.8 cm, and the thickness is 0.5-0.8 cm.
The minimum scale of the graduated scale is 1mm.
The lower end face of the support leg is provided with screw holes along the axis, and each screw hole is connected with a support leg screw through threads.
When the device is used, the number and the positions of the sliding support boxes on the sliding plate are adjusted according to the number and the position requirements of the measuring points, then the displacement sensor assembly is placed in a roadway of a physical similarity simulation model, and then the supporting legs are adjusted, so that the displacement sensor assembly is stable in the roadway and cannot shake and slide. And the outgoing line of the displacement sensor assembly is connected to the data acquisition device and is connected to the computer through the data line, so that the monitoring can be implemented.
By adopting the technical scheme, compared with the prior art, the invention has the following positive effects:
The structure of the invention is as follows: 2-5 displacement sensors are arranged on the upper plane of the sliding plate through respective sliding support boxes, and outgoing lines of the 2-5 displacement sensors are respectively connected with a computer through a data acquisition device; simple structure and low cost.
Compared with the traditional sensor, the displacement sensor adopted by the invention has the advantages that the outgoing line is positioned on the side wall of the sensor, can be vertically or approximately vertically arranged in the roadway model, and is suitable for simulating a narrow excavation space of a roadway similarly.
The invention can adjust the number and the positions of the measuring points, and can set up 5 displacement sensors to synchronously monitor at most; the vertical position of the displacement sensor in the roadway model can be controlled by adjusting the supporting leg screws of the four supporting legs; the horizontal position of the displacement sensor in the roadway model can be adjusted by sliding the sliding support box on the sliding plate, and the detection data is accurate and has wide application range.
According to the invention, the fixed sleeve ring is sleeved outside the hole wall of the sliding support box, so that the displacement sensor and the sliding support box can be firmly fixed together, the displacement sensor is ensured not to move in the long-term monitoring process, and the reliability of the monitoring result is high.
Therefore, the invention has the characteristics of stable structure and convenient use, not only can adjust the number and the positions of the measuring points, but also can realize long-term stable automatic monitoring, and the test result accords with the reality and has wide application range.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention;
fig. 2 is an enlarged schematic view of the structure of the displacement sensor assembly 1 in fig. 1;
FIG. 3 is a left side schematic view of FIG. 2;
fig. 4 is an enlarged schematic view of the positional relationship between the displacement sensor 9 and the lead wire 10 in fig. 3;
Fig. 5 is a schematic view of an application state of fig. 1.
Detailed Description
The invention is further described in connection with the drawings and the detailed description which follow, without limiting the scope thereof.
Examples
An analogue test monitoring device for the settlement of an underground roadway roof. The device for monitoring the simulated test of the subsidence of the top plate of the underground roadway is shown in figure 1, and consists of a displacement sensor device 1, a data acquisition device 2 and a computer 3; the displacement sensor assembly 1 is connected with the data collector 2 through an outgoing line 10, and the data collector 2 is connected with the computer 3 through a data line.
As shown in fig. 1 to 4, the displacement sensor assembly 1 is composed of two pairs of support legs 4, a slide plate 5, n sliding support boxes 6, a wire clamping groove 7, a fixed collar 8, n displacement sensors 9 and an outgoing wire 10; n is 5.
As shown in fig. 1 to 4, the slide plate 5 is a strip-shaped plate, and scales are respectively provided on both side surfaces along the length direction of the strip-shaped plate. 1 pair of support legs 4 are symmetrically arranged on the lower plane of the strip-shaped plate near two ends, each pair of support legs 4 are symmetrically arranged along the long axis of the sliding plate 5, and the support legs 4 are fixedly connected with the sliding plate 5 through bolts; the upper plane center position of the strip-shaped plate is provided with a sliding rail 11 along the length direction, and the width of the sliding rail 11 is 5mm.
As shown in fig. 1 to 4, the sliding box 6 has a cylindrical shape, the lower plane of the sliding box 6 is provided with a chute along the diameter direction, the section of the chute is the same as the nominal dimension of the section of the slide rail 11, and the sliding box 6 is mounted on the upper plane of the slide plate 5 through the chute and the slide rail 11.
As shown in fig. 2, a blind hole is arranged at the center of the upper plane of the sliding bracket box 6, and the inner diameter of the blind hole is the same as the nominal size of the outer diameter of the displacement sensor 9; the upper end face of the wall of the blind hole is downwards provided with a wire clamping groove 7 along the axial direction, the wire clamping groove 7 is a rectangular opening, the center line of the cross section of the wire clamping groove 7 coincides with the radius of the round hole, and the included angle between the center line of the cross section of the wire clamping groove 7 and the projection of the axis of the chute on the horizontal plane is 90 degrees.
As shown in fig. 3. The displacement sensor 9 is arranged in the blind hole of the sliding bracket box 6, and the outgoing line 10 of the displacement sensor 9 is led out from the wire clamping groove 7; the fixed lantern ring 8 is sleeved on the upper part of the sliding bracket box 6, and the fixed lantern ring 8 is positioned above the outgoing line 10.
The slide 5: the length is 42cm; the width is 2.8cm; the thickness was 0.8cm.
The minimum scale of the graduated scale is 1mm.
The lower end surface of the support leg 4 is provided with screw holes along the axis, and each screw hole is connected with a support leg screw 12 through threads.
As shown in fig. 5, when the device is used, the number and the positions of the sliding supporting boxes 6 on the sliding plate 5 are adjusted according to the number and the position requirements of the measuring points, then the displacement sensor assembly 1 is placed in the roadway 13 of the physical similarity simulation model 14, and then the supporting legs 4 are adjusted, so that the stability of the displacement sensor assembly 1 in the roadway 13 is ensured, and shaking and sliding cannot occur. The outgoing line 10 of the displacement sensor assembly 1 is connected to the data collector 2, and the computer 3 is connected to the data line, so that monitoring can be performed.
Example 2
An analogue test monitoring device for the settlement of an underground roadway roof. This example is the same as example 1 except for the following parameters:
N is 2;
The width of the slide rail 11 is 3mm;
the included angle between the cross section center line of the wire clamping groove 7 and the projection of the axis of the sliding groove on the horizontal plane is 105 degrees;
the slide 5: the length is 40cm; the width is 2.7cm; the thickness was 0.6cm.
Example 3
An analogue test monitoring device for the settlement of an underground roadway roof. This example is the same as example 1 except for the following parameters:
n is 4;
The width of the slide rail 11 is 4mm;
the included angle between the cross section center line of the wire clamping groove 7 and the projection of the axis of the sliding groove on the horizontal plane is 75 degrees;
the slide 5: the length is 38cm; the width is 2.5cm; the thickness was 0.5cm.
Compared with the prior art, the specific embodiment has the following positive effects:
the structure of this embodiment is: 2-5 displacement sensors 9 are arranged on the upper plane of the sliding plate 5 through respective sliding support boxes 6, and outgoing lines 10 of the 2-5 displacement sensors 9 are respectively connected with the computer 3 through the data acquisition device 2; simple structure and low cost.
Compared with the traditional sensor, the displacement sensor 9 adopted in the specific embodiment has the advantages that the outgoing line 10 is positioned on the side wall of the sensor 9, can be vertically or approximately vertically arranged in a roadway model, and is suitable for simulating a narrow excavation space of a roadway similarly.
The number and the positions of the measuring points can be adjusted, and at most 5 displacement sensors 9 can be arranged for synchronous monitoring; the vertical position of the displacement sensor 9 in the roadway 13 of the physical similarity simulation model 14 can be controlled by adjusting the support leg screws 12 of the four support legs 4; the horizontal position of the displacement sensor 9 in the roadway 13 of the physical similarity simulation model 14 can be adjusted by sliding the sliding support box 6 on the sliding plate 5, and the detection data is accurate and has wide application range.
According to the embodiment, the fixed lantern ring 8 is sleeved outside the hole wall of the sliding support box 9, the displacement sensor 9 and the sliding support box 9 can be firmly fixed together, the displacement sensor 9 is prevented from moving in the long-term monitoring process, and the reliability of the monitoring result is high.
Therefore, the specific embodiment has the characteristics of stable structure and convenient use, not only can adjust the number and the positions of the measuring points, but also can realize long-term stable automatic monitoring, and the test result accords with the reality and has wide application range.
Claims (4)
1. The device is characterized by comprising a displacement sensor device (1), a data acquisition device (2) and a computer (3); the displacement sensor assembly device (1) is connected with the data acquisition device (2) through the outgoing line (10), and the data acquisition device (2) is connected with the computer (3) through the data line;
The displacement sensor combination device (1) consists of two pairs of support legs (4), a sliding plate (5), n sliding support boxes (6), a wire clamping groove (7), a fixed sleeve ring (8), n displacement sensors (9) and outgoing wires (10), wherein n is a natural number of 2-5;
The sliding plate (5) is a strip-shaped plate, and graduated scales are respectively arranged on two side surfaces of the length direction of the strip-shaped plate; the lower plane of the strip-shaped plate is symmetrically provided with 1 pair of support legs (4) near two ends; a slide rail (11) is arranged at the center of the upper plane of the strip-shaped plate along the length direction;
the sliding support box (6) is cylindrical in shape, a sliding groove is formed in the lower plane of the sliding support box (6) along the diameter direction, the cross section of the sliding groove is the same as the nominal size of the cross section of the sliding rail (11), and the sliding support box (6) is arranged on the upper plane of the sliding plate (5) through the sliding groove and the sliding rail (11);
a blind hole is arranged at the center of the upper plane of the sliding support box (6), and the inner diameter of the blind hole is the same as the nominal size of the outer diameter of the displacement sensor (9); the upper end face of the wall of the blind hole is downwards provided with a wire clamping groove (7) along the axial direction, the wire clamping groove (7) is a rectangular opening, the center line of the cross section of the wire clamping groove (7) coincides with the radius of the blind hole, and the included angle between the center line of the cross section of the wire clamping groove (7) and the projection of the axis of the chute on the horizontal plane is 75-105 degrees;
The displacement sensor (9) is arranged in the blind hole of the sliding support box (6), and an outgoing line (10) of the displacement sensor (9) is led out from the clamping line groove (7); the fixed lantern ring (8) is sleeved on the upper part of the sliding bracket box (6), and the fixed lantern ring (8) is positioned above the outgoing line (10).
2. The simulated test monitoring device of the subsidence of an underground roadway roof according to claim 1, characterized in that the skid plate (5): the length is 38-42 cm, the width is 2.5-2.8 cm, and the thickness is 0.5-0.8 cm.
3. The simulation test monitoring device for the subsidence of the top plate of the underground roadway according to claim 1, wherein the minimum scale of the graduated scale is 1mm.
4. The simulation test monitoring device for the subsidence of the top plate of the underground roadway according to claim 1, wherein the lower end surface of the supporting leg (4) is provided with screw holes along the axis, and each screw hole is connected with a supporting leg screw (12) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210461553.1A CN115371630B (en) | 2022-04-28 | 2022-04-28 | Simulation test monitoring device for subsidence of top plate of underground roadway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210461553.1A CN115371630B (en) | 2022-04-28 | 2022-04-28 | Simulation test monitoring device for subsidence of top plate of underground roadway |
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| CN115371630A CN115371630A (en) | 2022-11-22 |
| CN115371630B true CN115371630B (en) | 2024-06-25 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257278A (en) * | 2016-10-12 | 2016-12-28 | 华北科技学院 | System and monitoring method are monitored in a kind of simulation experiment for roadway roof absciss layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7246883B2 (en) * | 2018-09-13 | 2023-03-28 | 株式会社大林組 | Underground Displacement Meter and Underground Displacement Calculation Method |
| CN109297462B (en) * | 2018-11-09 | 2019-10-08 | 山东科技大学 | The observation device and method of base object model rock stratum dynamic settling amount are covered on goaf |
| CN209820443U (en) * | 2019-04-23 | 2019-12-20 | 武汉科技大学 | Similar simulation test convergence monitoring device for underground tunnel |
| CN110067582B (en) * | 2019-05-05 | 2020-04-21 | 中国矿业大学 | Anchor rod for surrounding rock supporting and instability monitoring and mounting method thereof |
| CN111305286B (en) * | 2020-03-02 | 2022-02-11 | 山东大学 | Monitoring and verifying system and method for soil-rock double-element slope overall failure mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257278A (en) * | 2016-10-12 | 2016-12-28 | 华北科技学院 | System and monitoring method are monitored in a kind of simulation experiment for roadway roof absciss layer |
Non-Patent Citations (1)
| Title |
|---|
| 深部厚顶煤巷道大型地质力学模型试验***研制与应用;李术才;王德超;王琦;王富奇;彭蓬;李为腾;江贝;王洪涛;;煤炭学报;20131023(09);全文 * |
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