Guide rail sliding type roadway surrounding rock deformation probe monitor

Abstract

The utility model relates to a guide rail sliding type roadway surrounding rock deformation probe monitor and a method, and belongs to the technical field of mineral engineering. A laser distance measuring sensor and a full-section scanning technology in the prior art have the problems of high cost, high installation difficulty, environmental interference and the like. The surrounding rock deformation is converted into spring pressure through the grid type guide rail, the slidable box type strain gauge, the telescopic probe, the universal wheel type probe and other assemblies, and the deformation amount is calculated through the pressure gauge and the microcomputer. The monitor can slide on the guide rail, multi-point monitoring is achieved, and meanwhile the sound and light alarm function is achieved. The mine roadway surrounding rock deformation monitoring device has the characteristics of low cost, strong environmental adaptability, simplicity and convenience in installation, movable monitoring and the like, is suitable for long-term monitoring of mine roadway surrounding rock deformation, and effectively improves the safety of mine mining.

Description

Technical Field

[0001] This utility model belongs to the field of mining engineering technology, and in particular relates to a guide rail sliding type tunnel surrounding rock deformation probe monitoring device and method. Background Technology

[0002] As mineral resource mining gradually moves deeper, human excavation operations disrupt the original stress balance, causing stress redistribution. During this process, the surrounding rock in the tunnel is prone to deformation under stress, leading to safety accidents.

[0003] Currently, the commonly used methods for detecting surrounding rock in roadways are mainly laser rangefinders or full-section scanning. Laser rangefinders have high accuracy, but the high concentration of dust in underground roadways can interfere with their normal operation, and they are also difficult to install. Full-section scanning technology obtains deformation data of the entire surface of the surrounding rock in the roadway through high-density point cloud acquisition and 3D modeling, but the equipment cost is extremely high and it is difficult to deploy on a large scale. It is also difficult to obtain accurate data for special roadways such as those with water inrush.

[0004] Therefore, in order to improve or even solve the above problems, it is necessary to develop a tunnel surrounding rock deformation probe monitor that is less affected or unaffected by environmental interference, easy to install, inexpensive, and relatively accurate. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and achieve both low cost and resistance to harsh environments, the present invention aims to provide a low-cost, easy-to-operate, highly environmentally adaptable, and relatively accurate guide rail sliding type roadway surrounding rock deformation probe monitor and method, thereby improving the monitorability of roadway surrounding rock deformation and ensuring mine safety.

[0006] To achieve the above objectives, this utility model is implemented through the following technology:

[0007] This utility model relates to a guide rail sliding type tunnel surrounding rock deformation probe monitor and method. The device mainly includes a grid-type guide rail, a guide rail grounding fixer, a guide rail relative angle fixer, a monitor guide rail, a guide rail connector, a universal wheel probe, a cylindrical probe, a cylindrical dense coil helical spring, a multi-functional instrument panel, a microcomputer, a spring connector, a probe sleeve, a pressure gauge, and an audible and visual alarm.

[0008] The grid-type guide rail is a C-shaped steel guide rail arranged in a grid pattern to facilitate the movement and fixation of the monitor on the surrounding rock. As the tunnel is excavated, the guide rail can be extended through the guide rail connector to expand the monitor's monitoring range.

[0009] The rail grounding fixture consists of three telescopic support legs that can be fixed in length or angle and a rail extension section, used to fix the relative position of the rail to the ground.

[0010] The guide rail relative angle fixing device is similar to the guide rail grounding fixing device, and is used to fix the relative position of the guide rail and the surrounding rock.

[0011] The monitor guide rail is set on the base plate in front of the surrounding rock and fixed with a fixed support device for moving the surrounding rock deformation probe monitor.

[0012] The guide rail connector is a C-shaped metal buckle that is fixed between two guide rail sections that need to be connected by screws, thereby extending the guide rail distance and increasing the monitorable area.

[0013] The omnidirectional wheel probe is fixed to the end of the probe to protect the probe from wear during the movement of the monitor.

[0014] The cylindrical dense-coil helical spring connects the probe and the pressure gauge at the front and rear. It maintains its original length at the start of the measurement and is used to convert the probe's extension and retraction into axial pressure, which is then transmitted to the pressure gauge.

[0015] The multi-functional instrument panel includes a strain gauge display, a microcomputer, and several buttons, including a power button, a zeroing button, a suction cup control button, a unit conversion button, a warning value setting button, a confirmation button, and a numeric keypad. It is used to convert pressure gauge readings into surrounding rock strain values ​​and simplify monitor operation.

[0016] The microcomputer is attached to the back of the multi-functional instrument panel and can be operated simply by the buttons on the instrument panel. It is used to convert the electrical signal transmitted by the pressure gauge into the strain value of the monitoring point, and can also perform other simple data processing and output.

[0017] The spring connector is a steel ring, which is arranged on the pressure gauge and the probe respectively. It is used to fix the position of the spring and transmit the extension and retraction of the probe to the spring to cause its deformation.

[0018] The probe sleeve is fixed to the lower end of the box-type strain gauge to fix and protect the probe.

[0019] The pressure gauge is fixed at the upper end inside the box-type strain gauge and is used to detect the spring pressure and convert it into an electrical signal to be transmitted to the microcomputer. The monitoring sensitivity of this monitor can be adjusted by replacing and adjusting the pressure gauge.

[0020] The audible and visual alarm is fixed on the multi-functional instrument panel and consists of an electronic speaker and a red alarm light. When the spring compression exceeds the warning value set on the instrument panel, the audible and visual alarm will emit a red light and announce the relative position of the current roadway surrounding rock monitor.

[0021] This utility model has the following beneficial effects:

[0022] 1. This utility model adopts a combination of guide rail and box-type strain gauge to realize the monitoring of deformation of the surrounding rock in the tunnel. The application of guide rail allows the strain gauge to monitor a certain point on the surrounding rock more flexibly, which saves costs and improves efficiency.

[0023] 2. This utility model converts the strain of the surrounding rock in the tunnel into the deformation of a dense coil spring. Compared with existing methods for monitoring the surrounding rock in tunnels, this utility model is less susceptible to harsh environments such as dust or water inrush.

[0024] 3. This utility model adopts a threaded telescopic probe and a universal wheel probe, which further reduces the requirements for the surrounding rock environment and can be moved and measured on uneven roadway surrounding rock.

[0025] 4. The components of this utility model device are easy to manufacture, the structure is simple, and the construction process is simple. It can monitor the deformation of the surrounding rock in the roadway through its characteristics such as movable fixed-point monitoring, on-demand adjustable monitoring sensitivity, and high environmental resistance. Attached Figure Description

[0026] Figure 1 A schematic diagram of the structure of the guide rail sliding type tunnel surrounding rock deformation probe monitor provided by this utility model when monitoring the deformation of the surrounding rock in a tunnel;

[0027] Figure 2 A schematic diagram of the structure of the guide rail sliding type tunnel surrounding rock deformation probe monitor provided by this utility model when tunnel surrounding rock deformation is not detected;

[0028] Figure 3 A schematic diagram of the structure of the grid-type guide rail provided by this utility model;

[0029] Figure 4 A schematic diagram of the structure of the mesh guide rail connector provided by this utility model in use;

[0030] In the diagram: 1—Suction cup; 2—Circular sliding plate; 3—Pressure gauge; 4—Spring connector; 5—Cylindrical close-coil spring; 6—Box-type strain gauge housing; 7—Probe sleeve; 8—Cylindrical probe; 9—Universal wheel probe; 10—Monitor guide rail; 11—Multifunctional instrument panel; 12—Tunnel surrounding rock; 13—Guide rail grounding fixing device; 14—Guide rail relative angle fixing device; 15—Guide rail connector; 16—Microcomputer; 17—Repeater; 18—Audible and visual alarm. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described examples are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be noted that the terms "upper," "middle," "lower," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Unless otherwise expressly specified and limited, the terms “installation,” “connection,” and “linkage” should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0034] like Figure 1 As shown, the guide rail sliding type roadway surrounding rock deformation probe monitor mainly includes a fixed support device, a vertical grid guide rail device, a movable deformation monitoring probe device, a sliding box-type strain gauge device, a probe-strain gauge connection device, and an alarm device.

[0035] The fixed support device includes a guide rail grounding fixer 13 and a guide rail relative angle fixer 14. The guide rail grounding fixer 13 consists of three telescopic support legs that can be fixed in length or angle and a guide rail extension section, used to fix the relative position of the guide rail and the ground. The guide rail relative angle fixer 14 is similar to the guide rail grounding fixer and is used to fix the relative position of the guide rail and the surrounding rock.

[0036] The vertical grid guide rail device includes a monitor guide rail 10 and a guide rail connector 15. The monitor guide rail 10 is set on the bottom plate in front of the surrounding rock 12 of the roadway and fixed with a fixed support device for moving the surrounding rock deformation probe monitor. In the case where multiple vertical grid guide rail devices are required, the guide rail connector 15 is used to connect them into one unit, allowing the probe monitor to move between the guide rails.

[0037] The movable deformation monitoring probe device includes a universal wheel probe 9 and a cylindrical probe 8; the universal wheel probe 9 is fixed to the end of the cylindrical probe 8 to protect the cylindrical probe 8 from wear during the movement of the monitor; the cylindrical probe 8 is a multi-section hollow steel rod that can be extended and retracted by a thread to transmit the deformation of the surrounding rock 12 back to the sliding box-type strain gauge device.

[0038] The sliding box-type strain gauge device includes a cylindrical dense coil helical spring 5, a pressure gauge 3, and a multi-functional instrument panel 11; after the cylindrical probe 8 senses the deformation of the surrounding rock, it compresses the cylindrical dense coil spring 5, and the strain counting display screen on the multi-functional instrument panel 11 displays the spring compression amount, i.e. the deformation amount of the surrounding rock at the monitoring point, according to the reading of the pressure gauge 3 and Hooke's law.

[0039] The alarm device includes a repeater 17 and an audible and visual alarm 18. When the monitoring program in the microcomputer 16 detects that the change in strain gauge reading exceeds a preset value, the audible and visual alarm 18 is activated, and the alarm signal is transmitted to the staff through the repeater 17.

[0040] like Figure 2 As shown, the guide rail sliding type roadway surrounding rock deformation probe monitor mainly includes a fixed support device, a vertical grid guide rail device, a movable deformation monitoring probe device, a sliding box-type strain gauge device, a probe-strain gauge connection device, and an alarm device.

[0041] The fixed support device includes a guide rail grounding fixer 13 and a guide rail relative angle fixer 14. The guide rail grounding fixer 13 consists of three telescopic support legs that can be fixed in length or angle and a guide rail extension section, used to fix the relative position of the guide rail and the ground. The guide rail relative angle fixer 14 is similar to the guide rail grounding fixer and is used to fix the relative position of the guide rail and the surrounding rock.

[0042] The vertical grid guide rail device includes a monitor guide rail 10 and a guide rail connector 15. The monitor guide rail 10 is set on the bottom plate in front of the surrounding rock 12 of the roadway and fixed with a fixed support device for moving the surrounding rock deformation probe monitor. In the case where multiple vertical grid guide rail devices are required, the guide rail connector 15 is used to connect them into one unit, allowing the probe monitor to move between the guide rails.

[0043] The movable deformation monitoring probe device includes a universal wheel probe 9 and a cylindrical probe 8; the universal wheel probe 9 is fixed to the end of the cylindrical probe 8 to protect the cylindrical probe 8 from wear during the movement of the monitor; the cylindrical probe 8 is a multi-section hollow steel rod that can be extended and retracted by a thread to transmit the deformation of the surrounding rock 12 back to the sliding box-type strain gauge device.

[0044] The sliding box-type strain gauge device includes a cylindrical dense coil helical spring 5, a pressure gauge 3, and a multi-functional instrument panel 11; after the cylindrical probe 8 senses the deformation of the surrounding rock, it compresses the cylindrical dense coil spring 5, and the strain counting display screen on the multi-functional instrument panel 11 displays the spring compression amount, i.e. the deformation amount of the surrounding rock at the monitoring point, according to the reading of the pressure gauge 3 and Hooke's law.

[0045] The alarm device includes a repeater 17 and an audible and visual alarm 18. When the monitoring program in the microcomputer 16 detects that the change in strain gauge reading exceeds a preset value, the audible and visual alarm 18 is activated, and the alarm signal is transmitted to the staff through the repeater 17.

[0046] like Figure 3 As shown, the grid-type guide rail is set on the base plate in front of the surrounding rock and fixed with a fixed support device, and is used to move the circular slide plate 2 of the surrounding rock deformation probe monitor; in the case where multiple vertical grid guide rail devices are required, they are connected into one unit using guide rail connectors 15, allowing the monitor to move between guide rails.

[0047] like Figure 4 As shown, when multiple guide rails need to be connected, the guide rail connector is fastened to the section to be connected, and then the section of another guide rail to be connected is placed into the guide rail connector, and the limiting screw on the connector is tightened to fix it.

[0048] A method for implementing a guide rail sliding type roadway surrounding rock deformation probe monitor, which mainly includes the following steps when monitoring the deformation of roadway surrounding rock:

[0049] S1. Installation of guide rail device: Based on the cross-sectional size and excavation length of the tunnel, select the appropriate guide rail coverage area and distance from the wall through numerical simulation, and then fix the guide rail with a fixed support device.

[0050] S2. Installation of the tunnel surrounding rock deformation monitor: This includes the suction cup, circular sliding plate, pressure gauge, spring connector, cylindrical dense-coil spring, box-type strain gauge housing, probe sleeve, cylindrical probe, universal wheel probe, monitor guide rail, multi-functional instrument panel, tunnel surrounding rock, guide rail grounding fixing device, guide rail relative angle fixing device, guide rail connector, microcomputer, repeater, and audible and visual alarm. Figure 1 and Figure 2 Install as shown.

[0051] S3. Monitoring: Slide the circular slide of the roadway surrounding rock deformation monitor into the guide rail from any open end and move it to the predetermined monitoring point. Adjust the suction cup to fix the position of the monitor relative to the guide rail, and adjust the probe length so that it just contacts the rock wall. Turn on the multi-function instrument panel, press the zeroing button, and then set the warning value.

[0052] S4. Change monitoring point: Release the suction cup, hold the monitor with both hands and move it along the guide rail to the new monitoring point, and repeat step S3.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A guide rail sliding type roadway surrounding rock deformation probe monitor, characterized in that, The guide rail sliding roadway surrounding rock deformation probe monitor mainly comprises a fixed support device, a vertical grid guide rail device, a movable deformation monitoring probe device, a slidable box type strain gauge device, a probe-strain gauge connecting device and an alarm device. The fixed support device comprises a guide rail ground fixer and a guide rail relative angle fixer, wherein the guide rail ground fixer is composed of three telescopic support legs with fixed length or angle and a guide rail extension section, and is used for fixing the relative position of the guide rail and the ground; the guide rail relative angle fixer is similar to the guide rail ground fixer, and is used for fixing the relative position of the guide rail and the surrounding rock. The vertical grid guide rail device comprises a monitor guide rail and a guide rail connector, the monitor guide rail is arranged on the floor in front of the surrounding rock and is fixed by the fixed support device, and is used for moving the surrounding rock deformation probe monitor; in the case where multiple vertical grid guide rail devices are needed, the guide rail connector is used to connect them into one, and the monitor is allowed to move between the guide rails. The movable deformation monitoring probe device comprises a universal wheel type probe and a cylindrical probe; the universal wheel type probe is fixed at the end of the probe, and is used for protecting the probe from being abraded during the movement of the monitor; the cylindrical probe is a multi-section hollow steel rod which can be extended or retracted by relying on threads, and is used for transmitting the surrounding rock deformation to the slidable box type strain gauge device. The slidable box type strain gauge device comprises a cylindrical tight coil spring, a pressure gauge and a multifunctional instrument panel; after the probe senses the surrounding rock deformation, the spring is compressed, and the strain gauge display screen on the multifunctional instrument panel displays the spring compression amount according to the pressure gauge display and Hooke's law, that is, the surrounding rock deformation at the monitoring point. The probe-pressure gauge connecting device comprises a spring connector and a probe sleeve; the spring connector connects the spring and the probe through a steel ring; after the surrounding rock is deformed greatly, the probe sleeve is used for protecting and fixing the probe during the extension and retraction of the probe. The alarm device comprises a repeater and an audible and visual alarm; when the strain gauge monitoring program in the microcomputer finds that the strain gauge display changes by more than a preset value, the audible and visual alarm is started, and the alarm signal is transmitted to the staff through the repeater.

2. The probe monitor of claim 1, wherein, The slidable box type strain gauge device is provided with a circular sliding disc and a suction disc, and is used for sliding operation on the matched guide rail and is fixed after the sliding operation is completed.

3. The probe monitor of claim 1, wherein, The vertical grid guide rail device can be composed of multiple grid guide rail units which are spliced; according to the specific connection scene, a double connector, a three connector or a four connector is selected.

4. The probe monitor of claim 1, wherein, The probe is a multi-section hollow steel rod which can be extended or retracted by relying on threads; before measurement, the length of the probe is adjusted through threads so that the spring is close to its natural state original length when the probe just contacts the rock wall, and then the measurement is started from zero by pressing the zero reset button on the box type strain gauge.

5. The probe monitor of claim 1, wherein, The multifunctional instrument panel comprises a strain gauge display screen, a microcomputer and a plurality of buttons, and the plurality of buttons comprise an on-off button, a zero reset button, a suction disc control button, a display unit conversion button, a pre-warning value setting button, a confirmation button and a digital keyboard.

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