Advanced roadway surrounding rock deformation monitoring device suitable for single prop support

Abstract

The utility model relates to the technical field of roadway surrounding rock deformation monitoring, and particularly discloses an advance roadway surrounding rock deformation monitoring device suitable for a single prop support. The deformation monitoring device comprises an explosion-proof shell, a laser ranging sensing system, a single chip microcomputer and the like, and probe holes are formed in the top, the bottom, the left side wall and the right side wall of the explosion-proof shell; a laser ranging sensing system is arranged in the explosion-proof shell, a plurality of laser ranging sensors are integrated in the laser ranging sensing system, and the laser detection end of each laser ranging sensor is aligned with one detection hole; a single-chip microcomputer and a buzzer are further arranged in the explosion-proof shell, and the laser distance measuring sensor and the buzzer are connected with the single-chip microcomputer through signal cables. The advanced roadway surrounding rock deformation monitoring device can carry out real-time deformation monitoring on the section of a roadway, effectively reduce measurement errors, avoid blocking of advanced support equipment, and realize automatic data processing, storage and timely early warning.

Description

Technical Field

[0001] The utility model relates to the technical field of roadway surrounding rock deformation monitoring, and particularly relates to an advanced roadway surrounding rock deformation monitoring device suitable for single prop support. Background Technique

[0002] In the coal mining operation in China, the driving roadway along the mining face is more and more widely used. However, under the influence of the mining stress near the working face, it is easy to cause serious deformation of the roadway along the mining face, which poses a threat to the safe mining of the working face and the stability of the roadway. Therefore, especially for the advanced support area affected by mining, it is necessary to monitor the deformation amount of the roadway section in real time and judge whether the surrounding rock is unstable in time, so as to effectively give corresponding measures in advance for the damage of the roof, floor and two sides of the roadway.

[0003] The existing roadway section monitoring methods mainly focus on single-point measurement, that is, through the cross measurement method, using measuring instruments such as roof separation meters and convergence meters to conduct single-point contact measurement on the roadway, and calculating the deformation amount through multiple measurements and observations, so as to monitor the roadway deformation. These monitoring methods are widely used because of their simple operation and can meet the general accuracy measurement requirements. However, the disadvantages of these measurement methods are also obvious. The artificial cross measurement method is used for measurement, and the artificial measurement error is large, and it cannot monitor in real time and give early warning in time. For other devices or methods for monitoring the whole roadway section, multiple devices need to be arranged to monitor the deformation amount of a single whole roadway section, and when monitoring in the advanced support area, it is easy to be blocked by single props, resulting in the inability to monitor in time.

[0004] Therefore, the utility model provides an advanced roadway surrounding rock deformation monitoring device suitable for single prop support. Content of the Utility Model

[0005] The purpose of the utility model is to provide an advanced roadway surrounding rock deformation monitoring device suitable for single prop support, which can effectively monitor the deformation amount of the roadway section in real time.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An advanced roadway surrounding rock deformation monitoring device suitable for single prop support includes an explosion-proof shell;

[0008] Detection holes are provided on the top, bottom, left and right side walls of the explosion-proof shell;

[0009] A laser ranging sensing system is arranged inside the explosion-proof shell. Among them, a plurality of laser ranging sensors are integrated inside the laser ranging sensing system, and the laser detection end of each laser ranging sensor is aligned with a detection hole respectively;

[0010] Inside the explosion-proof housing, a single-chip microcomputer and a buzzer are also provided. The laser distance sensor and the buzzer are both connected to the single-chip microcomputer through signal cables.

[0011] A connecting seat is provided at the rear side of the explosion-proof housing. Ring-shaped openings are formed on both sides of the connecting seat. The connecting seat is connected to the single prop through a steel tie strap passing through the ring-shaped opening.

[0012] Preferably, a display screen is provided on the side wall of the explosion-proof housing. The display screen is connected to the single-chip microcomputer through a signal cable.

[0013] Preferably, a power supply is also provided inside the explosion-proof housing. The power supply is used to supply power to the single-chip microcomputer, the laser distance sensor, the buzzer, and the display screen.

[0014] Preferably, a WiFi transmission module is built in the single-chip microcomputer. The WiFi transmission module is signal-connected to a host computer.

[0015] Preferably, an alarm lamp is provided on the side wall of the explosion-proof housing.

[0016] Preferably, the alarm lamp includes a yellow LED alarm lamp and a red LED alarm lamp.

[0017] Preferably, an arc-shaped groove is formed on the surface of the connecting seat connected to the single prop. The arc-shaped groove is adapted to the single prop.

[0018] The beneficial effects of the present utility model are as follows:

[0019] The present utility model provides a deformation monitoring device for the surrounding rock of the advanced roadway suitable for single prop support. The deformation monitoring device can monitor the roadway section in real time, reduce the error of manual measurement, effectively improve the monitoring efficiency, display data through a display screen, and give a timely warning for dangerous situations;

[0020] The deformation monitoring device of the present utility model is different from other coal mine roadway measurement devices that can only measure the deformation of the two sides or the roof and floor singly. It is internally provided with four laser ranging sensors, which can simultaneously monitor the deformation of the two sides and the roof and floor of the roadway, realizing the deformation monitoring and early warning of the entire cross-section of the roadway. The data obtained by the laser ranging sensors is transmitted to the single-chip microcomputer. When the deformation exceeds the deformation threshold, the single-chip microcomputer can timely control the buzzer and the warning light, and give an alarm in time through the buzzer and the warning light for the possible dangerous situations, reducing the probability of dangerous situations occurring through various means, protecting the lives of underground coal miners, and providing a safe working environment for mine exploitation operations. The deformation monitoring device of the present utility model is fixed on the single prop by using steel tie straps, making the whole device located in the middle of the roadway, avoiding the occlusion of the advanced support equipment, and there is no need for other fixing devices, avoiding affecting the normal production of other equipment in the roadway. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the internal structure of the present utility model Figure 1 ;

[0022] Figure 2 is a schematic diagram of the internal structure of the present utility model Figure 2 ;

[0023] Figure 3 is an assembly schematic diagram of the present utility model and the single prop

[0024] Figure 4 is a schematic diagram of the cross-section measurement of the present utility model;

[0025] wherein, a - single prop, b - laser beam;

[0026] 1 - explosion-proof housing, 11 - detection hole, 2 - laser ranging sensor system, 3 - single-chip microcomputer, 4 - display screen, 5 - buzzer, 6 - power supply, 7 - connecting seat, 71 - annular opening, 8 - warning light. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0028] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated as a whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Combined with Figures 1 to 4 As shown, the present utility model provides an advanced roadway surrounding rock deformation monitoring device applicable to single-pillar support. This deformation monitoring device can monitor the deformation amount of the roadway section in real time, timely judge whether the surrounding rock is unstable, so as to effectively give corresponding measures in advance for the damage of the roof, floor and two sides of the roadway, and ensure the safe progress of coal mining operations.

[0030] Combined with Figure 1 and Figure 2 As shown, the deformation monitoring device of the present utility model mainly includes structural components such as an explosion-proof housing 1, a laser ranging sensor system 2, and a single-chip microcomputer 3. Among them, the explosion-proof housing 1 is used to place each structural component inside the device, and at the same time can meet the explosion-proof requirements of underground electronic equipment, can relatively isolate the external environment to protect its internal components from damage, and ensure the smooth progress of the monitoring process.

[0031] Combined with Figure 1 As shown, detection holes 11 for laser detection are provided on the top, bottom, left and right side walls of the explosion-proof housing 1. A laser ranging sensor system 2 is arranged inside the explosion-proof housing 1. Among them, four laser ranging sensors are integrated inside the laser ranging sensor system 2. The laser detection end of each laser ranging sensor is aligned with a detection hole 11, and can respectively measure the distances from the roof, floor and two sides of the roadway to the laser ranging sensor. The laser ranging sensor adopts phase measurement technology, uses the frequency of the radio wave band to amplitude-modulate the laser beam b and measures the phase delay generated by the modulated light traveling back and forth along the measuring line once, and then according to the wavelength of the modulated light, converts the distance represented by this phase delay to monitor the displacement change amounts of the roof, floor and two sides of the roadway respectively, and transmits the collected data to the single-chip microcomputer 3.

[0032] Combined with Figure 1 and Figure 2As shown in the figure, a single-chip microcomputer 3 is also provided inside the explosion-proof housing 1. The laser distance sensor is connected to the single-chip microcomputer 3 through a signal cable. The single-chip microcomputer 3 can drive the laser distance sensor to measure each point on the cross-section at fixed time intervals. If the deformation amount of the roadway exceeds the set deformation threshold, it can send signals to devices such as the alarm lamp 8 and the buzzer 5 for early warning. At the same time, a WiFi transmission module is built into the single-chip microcomputer 3. The WiFi transmission module is signal-connected to the upper computer. It can convert the electrical signals collected by the laser distance sensor into wireless signals. After passing through the configuration module, the module IP can be searched on the upper computer. After connecting the upper computer and the WiFi transmission module, the values of the laser distance sensor can be collected.

[0033] Combined with Figure 1 and Figure 2 As shown in the figure, a buzzer 5 is also provided inside the explosion-proof housing 1. The buzzer 5 is connected to the single-chip microcomputer 3 through a signal cable and can be used for early warning when the deformation amount of the roadway cross-section exceeds the deformation threshold.

[0034] Combined with Figure 1 and Figure 2 As shown in the figure, an alarm lamp 8 is provided on the side wall of the explosion-proof housing 1. The alarm lamp 8 is connected to the single-chip microcomputer 3 through a signal cable. When the single-chip microcomputer 3 determines that the deformation amount of the roadway cross-section at this place exceeds the deformation threshold, it can send a signal to the alarm lamp 8 for early warning. Among them, the alarm lamp 8 mainly includes a yellow LED alarm lamp and a red LED alarm lamp. The alarm lamp 8 can remind the staff that the deformation amount of the roadway cross-section here exceeds the deformation threshold by flashing the light, and corresponding countermeasures need to be taken here. At the same time, the staff can relatively easily distinguish whether the deformation amount of the two sides or the top and bottom of the roadway exceeds the deformation threshold through the color.

[0035] Combined with Figure 1 and Figure 2 As shown in the figure, a display screen 4 is provided on the side wall of the explosion-proof housing 1. The display screen 4 is connected to the single-chip microcomputer 3 through a signal cable. Relevant parameters such as the number and row number of the current device, the roadway clearance data, and the relative displacement amount can be displayed on the display screen 4. It can also display the cross-sectional shape of the currently measured roadway and display the maximum deformation amount value during the current measurement time period. The staff can intuitively understand the basic information of the current roadway through the display screen 4.

[0036] Combined with Figure 1 and Figure 2 As shown in the figure, a power supply 6 is also provided inside the explosion-proof housing 1. The power supply 6 is connected to relevant components such as the single-chip microcomputer 3, the laser distance sensor, the buzzer 5, the display screen 4, and the alarm lamp 8 through cables and can supply power to the internal components to ensure the smooth progress of the monitoring operation. The power supply 6 is a detachable battery, which is convenient for later replacement and use.

[0037] Combined with Figure 1 andFigure 2 As shown in the figure, a connecting seat 7 is provided at the rear side of the explosion-proof housing 1. Annular openings 71 are formed on both sides of the connecting seat 7. The connecting seat 7 is connected and fixed to the single prop a through a steel tie passing through the annular openings 71. An arc-shaped groove is formed on the surface of the connecting seat 7 that is connected to the single prop a. The arc-shaped groove is adapted to the single prop a. When fixed by the steel tie, the connecting seat 7 can be more closely attached to the side wall of the single prop a, increasing the stability of the deformation monitoring device and ensuring the smooth progress of subsequent monitoring operations.

[0038] Combined with Figures 1 to 4 As shown in the figure, after the deformation monitoring device is fixed to the single prop a through a steel tie, the initial lengths of the deformation monitoring device from the two sides and the roof and floor of the roadway are measured and stored in the single-chip microcomputer 3. The measurement interval time is set through the single-chip microcomputer 3. Different deformation thresholds can be set for the two sides and the roof and floor of the roadway according to the requirements of coal mine regulations. The four laser ranging sensors built in the deformation monitoring device respectively measure the distances from the two sides and the roof and floor of the roadway. When the deformation amount of the two sides or the roof and floor of the roadway exceeds the set deformation threshold, a signal will be sent to the buzzer 5, and the buzzer 5 will give an alarm after receiving the signal.

[0039] The usage steps of the deformation monitoring device of the present utility model are as follows:

[0040] Step 1: Install and fix the device;

[0041] Specifically, the whole deformation monitoring device is fixed at a suitable position on the non-live column of the single prop a for roadway support through a steel tie, so that the laser spot can be hit on a flat coal wall or other flat surfaces as much as possible. The deformation monitoring device can simultaneously monitor the deformation amounts of the two sides and the roof and floor of the roadway; after the device is fixed, it is necessary to check whether it is firmly fixed to ensure that the whole device does not shift.

[0042] Step 2: Number the measuring points;

[0043] Specifically, after checking that the cable connections of all components are correct, turn on the power supply 6, and the laser ranging sensors enter the normal working state. Operate the display screen 4 to input the current row number where the single prop a is located and the number of the surface displacement measuring point at this point.

[0044] Step 3: Measure the initial value;

[0045] Specifically, the initial values of the distances from the two sides and the roof and floor of the roadway are measured by the laser distance sensor, namely Loa_initial, Lob_initial, Loc_initial, and Lod_initial, and these values are set as the initial values of the sensor and saved. It should be noted that before setting the initial values of the sensor, the sensor only measures the current roadway clearance data L, and the display screen 4 only shows the number and the roadway clearance data L. After setting the initial values of the sensor, the laser distance sensor starts to measure the current roadway clearance data L, including Loa, Lob, Loc, Lod, and the current relative displacement ΔL, where ΔL = |Lo - L|, and Lo is the initial value of the sensor obtained above. The display screen 4 sequentially shows the number, the roadway clearance data L, and the relative displacement ΔL.

[0046] Step Four: Set the measurement interval time.

[0047] Set the measurement interval time on the display screen 4. It is set that the laser distance sensor starts to measure the roadway clearance data L every hour, and the obtained data and the specific time of measurement are automatically saved to the single-chip microcomputer 3.

[0048] Step Five: Set the deformation threshold.

[0049] Specifically, according to the actual conditions of different lithologies at the roadway site, the maximum allowable deformation amount (deformation threshold) of the roadway that conforms to the on-site specifications is formulated. When the relative displacement ΔL of the roadway exceeds the specified maximum allowable deformation amount (deformation threshold), corresponding measures should be taken for the roadway in a timely manner.

[0050] Step Six: Measurement and data processing.

[0051] Specifically, when the deformation amount of a certain two sides of the roadway is too large and the relative displacement ΔL exceeds the set deformation threshold, the buzzer 5 will emit an alarm sound for early warning, and the yellow LED alarm light will flash for alarm. When the deformation amount of the roof and floor of the roadway is too large and the relative displacement ΔL exceeds the set deformation threshold, the buzzer 5 emits an alarm sound for early warning, and the red LED alarm light flashes for alarm. When the deformation amounts of both the two sides and the roof and floor exceed the set deformation threshold, the buzzer 5 emits an alarm sound for early warning, and the yellow LED alarm light and the red LED alarm light flash alternately.

[0052] Combined with Figures 1 to 4As shown in the figure, the present utility model proposes an advanced roadway surrounding rock deformation monitoring device applicable to single prop support. This deformation monitoring device can conduct real-time deformation monitoring on the roadway section, reduce the error of manual measurement, effectively improve the monitoring efficiency, realize data processing, storage and display, and give timely warnings for dangerous situations. Different from other coal mine roadway measurement devices that can only measure the deformation of the two sides or the roof and floor singly, the deformation monitoring device of the present utility model is internally provided with four laser ranging sensors, which can simultaneously monitor the deformation of the two sides and the roof and floor of the roadway, realize the deformation monitoring and warning of the entire roadway section. Through the single-chip microcomputer 3, signals can be sent to the buzzer 5 and the alarm lamp 8 for data with deformation exceeding the deformation threshold, and the buzzer 5 and the alarm lamp 8 can give timely alarms for possible dangerous situations, reduce the probability of dangerous situations occurring through various means, protect the lives of underground coal miners, and provide a safe working environment for mine exploitation operations. This device can realize remote control and improve work efficiency. The laser ranging sensing system 2 can be remotely controlled through the network, which is convenient for users to remotely manage and monitor the device. Staff can also perform operations such as parameter setting, data query and fault diagnosis on the device through the network, obtain real-time roadway deformation information, significantly reduce the monitoring time and error, and avoid the lagging effect of the manual measurement process on roadway deformation, thus greatly improving work efficiency.

[0053] Of course, the above is only the preferred embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the inventive concept of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model and should be protected by the present utility model.

Claims

1. A surrounding rock deformation monitoring device for advanced tunnels suitable for single pillar support, characterized in that: Includes explosion-proof housing; The top, bottom, left and right side walls of the explosion-proof housing are provided with detection holes; A laser distance measuring sensor system is arranged inside the explosion-proof housing, wherein a plurality of laser distance measuring sensors are integrated inside the laser distance measuring sensor system, and a laser detection end of each laser distance measuring sensor is aligned with a detection hole respectively; A single-chip microcomputer and a buzzer are also arranged inside the explosion-proof housing, and the laser ranging sensor and the buzzer are connected to the single-chip microcomputer via a signal cable; A connecting seat is arranged at the rear side of the explosion-proof housing, and annular openings are provided on both sides of the connecting seat. The connecting seat is connected to the single pillar by passing a steel cable tie through the annular openings.

2. The device for monitoring deformation of surrounding rock in advanced tunnels suitable for single pillar support according to claim 1, characterized in that: A display screen is disposed on the side wall of the explosion-proof housing, and the display screen is connected to the single-chip computer via a signal cable.

3. The device for monitoring surrounding rock deformation of an advanced tunnel suitable for single pillar support according to claim 2, characterized in that: A power supply is also provided inside the explosion-proof housing, and the power supply is used to supply power to the single-chip microcomputer, the laser ranging sensor, the buzzer and the display screen.

4. The device for monitoring deformation of surrounding rock in advanced tunnels suitable for single pillar support according to claim 1, characterized in that: The single chip microcomputer is equipped with a built-in WiFi transmission module, and the WiFi transmission module signal is connected to the host computer.

5. The device for monitoring deformation of surrounding rock in advanced tunnels suitable for single pillar support according to claim 1, characterized in that: The side wall of the explosion-proof housing is provided with an alarm light.

6. The device for monitoring deformation of surrounding rock in advanced tunnels suitable for single pillar support according to claim 5, characterized in that: The warning lights include a yellow LED warning light and a red LED warning light.

7. The device for monitoring deformation of surrounding rock in advanced tunnels suitable for single pillar support according to claim 1, characterized in that: An arc-shaped groove is provided on one side of the connecting seat connected to the single pillar, and the arc-shaped groove is adapted to the single pillar.

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