TBM airborne rockburst micro-seismic automatic monitoring system

Abstract

The utility model discloses a TBM (Tunnel Boring Machine) onboard rockburst micro-seismic automatic monitoring system which comprises an annular installer, rockburst micro-seismic monitoring devices are distributed along the circumferential surface of the annular installer, an auxiliary drilling device is arranged on one side of each rockburst micro-seismic monitoring device, and an auxiliary drilling device is arranged on the other side of each rockburst micro-seismic monitoring device. The explosion micro-seismic monitoring device and the auxiliary drilling device are arranged in the radial direction of the annular installer. The auxiliary drilling device is used for drilling on a rock wall, the annular installer drives the rock burst micro-seismic monitoring device to rotate to a drilling position and installs the rock burst micro-seismic monitoring sensor in a corresponding drilling hole, and the data acquisition device is a data acquisition integration box and is connected with the rock burst micro-seismic monitoring sensor through a data transmission line. The onboard rockburst micro-seismic monitoring device is adopted, real-time installation of monitoring equipment can be achieved, and the construction technical problems that when a TBM conducts construction in a rockburst high-incidence stratum, the rockburst monitoring equipment is difficult to arrange, the automation degree is low, and manpower is occupied are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rock burst monitoring during rock tunnel construction, and in particular to a TBM-mounted rock burst microseismic automatic monitoring system. Background Art

[0002] Rockburst is a common geological disaster in rock tunnel construction, which can cause great damage to construction equipment and completed tunnel structures, and more seriously, cause injuries and psychological impacts to construction personnel. Rockburst has many impacts on tunnel construction, so it is necessary to predict and judge the possibility of rockburst in the tunnel surrounding rock in real time during rock tunnel excavation construction, and formulate necessary prevention and control measures to ensure safe and efficient construction.

[0003] At present, the patent CN 220621970 U in the prior art provides a rockburst prediction device for deep tunnels of iron ore. The device mainly aims at the problem that the natural wind heat dissipation in the tunnel is poor, which is extremely easy to cause the burning of the internal precision instruments and the practical effect is poor. An integrated device including a main board, two sets of slide rails, a rock acoustic emission detector, a controller and an information processing module is developed. When the temperature inside the machine is too high, the operation of the motor drives the fan to rotate, so that the fan blows air into the machine body, so that the cool air from the outside is blown into the machine body, achieving the effect of rapid cooling, thereby solving the problem of poor heat dissipation effect in the traditional device. However, the device is also an independent device and cannot be carried on the TBM. When in use, it still needs to be operated separately and operated by a special technician. In the rock tunnel construction environment, especially when constructing in the rockburst prone stratum, it is extremely inconvenient to control the operation of this independent equipment in the excavated tunnel, and there are great safety hazards. In addition, the device also has technical problems such as low automation and occupation of manpower. Summary of the invention

[0004] The utility model provides a TBM airborne rockburst microseismic automatic monitoring system, which aims to solve the construction technical problems such as difficult deployment of rockburst monitoring equipment, low automation level, and occupation of manpower when TBM is constructing in rockburst prone strata.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A TBM airborne rockburst microseismic automatic monitoring system is designed, comprising an annular installer, wherein a rotary drive motor is connected to the rear center of the annular installer; rockburst microseismic monitoring devices are arranged along the circumferential surface of the annular installer, and an auxiliary drilling device is arranged on one side of each rockburst microseismic monitoring device, and the rockburst microseismic monitoring device and the auxiliary drilling device are both arranged along the radial direction of the annular installer.

[0007] The rockburst microseismic monitoring device comprises a first hydraulic cylinder, a fixed base is arranged at the front end of the telescopic rod of the first hydraulic cylinder, a probe rod is detachably mounted on the fixed base, and a rockburst microseismic monitoring sensor is mounted on the side wall of the probe rod.

[0008] The auxiliary drilling device includes a second hydraulic cylinder, a drill rod motor is installed at the front end of the telescopic rod of the second hydraulic cylinder, a drill rod is installed at the front end of the drill rod motor, and a drill bit is arranged at the front end of the drill rod. The second hydraulic cylinder is used to control the forward and backward movement of the drill rod as a whole; the drill rod motor is used to drive the drill rod to rotate and drill.

[0009] The auxiliary drilling device is used to drill holes on the rock wall. After drilling, the annular installer rotates a certain angle under the drive of the rotary drive motor, so that the probe rod of the rockburst microseismic monitoring device next to it corresponds to the drilling hole. The first hydraulic cylinder drives the probe rod to extend and insert the probe rod into the borehole. The probe rod is then disassembled and separated from the fixed base, and the installation of the rockburst microseismic monitoring sensor is completed. Multiple sets of rockburst microseismic monitoring devices and auxiliary drilling devices can be set on a ring installer, and multiple monitoring points on a section can be drilled and installed at the same time, which can significantly improve the installation efficiency of rockburst microseismic monitoring sensors.

[0010] The monitoring system also includes a data acquisition device, which is a data acquisition integrated box. The rockburst microseismic monitoring sensor is connected to the data acquisition integrated box through a data transmission line, and the data acquisition integrated box is connected to the computer terminal in the host room through a line. The data acquisition integrated box can use a 24-bit 8-channel netADC integrated unit, which is an Ethernet interface and can continuously record the digital signals from the microseismic sensor.

[0011] Preferably, the number of rockburst microseismic monitoring points on each section is the same as the number of rockburst microseismic monitoring devices provided on the annular installer; and one data acquisition integrated box is connected to the rockburst microseismic monitoring sensors on 1-3 sections.

[0012] Preferably, each explosion microseismic monitoring device forms a certain angle with its adjacent auxiliary drilling device. After drilling, the annular installer only needs to rotate a certain angle to make the probe rod of the rockburst microseismic monitoring device correspond to the adjacent drill hole, which is convenient for the installation of the explosion microseismic monitoring sensor.

[0013] Preferably, multiple groups of barbs are arranged on the outer wall of the probe rod. When the probe rod is installed in the borehole, the barbs can form resistance with the inner wall of the borehole, which can further ensure the fixation and fit between the probe rod and the surrounding rock, making the installation of the explosion microseismic monitoring sensor more stable. The diameter of the probe rod can also be set slightly larger than the outer diameter of the drill rod, so that the probe rod and the borehole can be tightly installed together.

[0014] Preferably, a protective shell is provided on the outside of the second hydraulic cylinder, the drill rod motor and the drill rod; when drilling, the second hydraulic cylinder drives the drill rod to extend out of the protective shell to perform drilling, and the protective shell can prevent the debris from colliding with the second hydraulic cylinder and the drill rod motor during the drilling process. After the drilling is completed, the drill rod is retracted into the protective shell; the drill rod is a spiral drill rod.

[0015] Preferably, an installer support frame is provided on the annular installer, and the installer support frame includes a cross-shaped transverse steel support and a vertical steel support, and an annular steel support fixed on the transverse steel support and the vertical steel support. The explosion microseismic monitoring device and the auxiliary drilling device are both installed on the annular steel support.

[0016] Preferably, the annular installer can adopt an annular gear ring on a shield machine, which is located at the middle front shield position of the shield machine and is used for drilling by the drilling rig. In the utility model, the rock burst microseismic sensor installation device is combined with the annular gear ring to realize the automated installation of the rock burst microseismic equipment.

[0017] The method for performing rockburst microseismic monitoring using the TBM airborne rockburst microseismic automated monitoring system comprises the following steps:

[0018] S1: According to the location and number of rockburst microseismic monitoring points in each section, the microseismic monitoring device and the auxiliary drilling device are pre-installed on the ring mounter, and the ring mounter is controlled to rotate to a specified position during the TBM shutdown process so that the auxiliary drilling device corresponds to the position to be drilled;

[0019] S2: The drill rod in the auxiliary drilling device is driven by the second hydraulic cylinder and the drill rod motor to drill holes at the corresponding position, and the drill rod is retracted after the drilling is completed; the second hydraulic cylinder drives the drill rod to move forward and extend, and the drill rod motor drives the drill rod to rotate to drill holes. During the drilling process, the second hydraulic cylinder drives the drill rod to move forward continuously as the drilling hole deepens. After the drilling is completed, the second hydraulic cylinder drives the drill rod to be retracted as a whole.

[0020] S3: The rotating drive motor drives the annular installer to rotate, so that the explosion microseismic monitoring device next to each auxiliary drilling device is turned to the drilling position, aimed at the borehole, and the probe rod is extended forward under the control of the first hydraulic cylinder and enters the borehole; the connection between the fixed base and the probe rod is removed, and the installation of the explosion microseismic monitoring device at the rockburst microseismic monitoring point in the section is completed; after the rockburst microseismic monitoring point on a section is arranged, the TBM continues to move forward and arranges the rockburst microseismic monitoring point on the next section. The data acquisition device can be installed at a suitable position on the rock wall, and one data acquisition device can be connected to the rockburst microseismic monitoring sensors on 1-3 sections for data acquisition.

[0021] S4: The rockburst microseismic monitoring sensor on the probe rod collects rockburst microseismic data. After the data is collected, it is transmitted to the data collection integration device, and then transmitted to the host computer to process the collected data, output the rockburst monitoring results and issue a real-time warning.

[0022] The beneficial effects of the utility model are:

[0023] The TBM airborne rockburst microseismic automated monitoring system of the utility model adopts an airborne rockburst microseismic monitoring device, which can realize the real-time installation and deployment of rockburst microseismic monitoring sensors. By adopting a ring-shaped installer, it is possible to simultaneously drill holes for rockburst microseismic monitoring points on the same section, and the rockburst microseismic monitoring sensors on the same section can be installed at the same time, which can significantly improve the installation efficiency of rockburst microseismic monitoring sensors. Rockburst microseismic monitoring sensors are arranged on different sections, and the geological data of different sections can be monitored separately in real time, which solves the construction technical problems of the prior art such as the difficulty in laying out rockburst monitoring equipment in rockburst-prone strata, low degree of automation, and occupation of manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a sensor arrangement device of a TBM airborne rockburst microseismic automatic monitoring system of the utility model;

[0025] Figure 2 It is a structural schematic diagram of a rockburst microseismic monitoring device;

[0026] Figure 3 It is a schematic diagram of the structure of the auxiliary drilling device;

[0027] Figure 4 It is a structural diagram of the drill pipe;

[0028] Figure 5 It is a schematic diagram of the layout of rock burst microseismic monitoring points in the tunnel.

[0029] Numbers in the figure: 1 rock burst microseismic monitoring device, 2 drill rod, 3 annular installer, 4 annular steel support, 5 vertical steel support, 6 horizontal steel support; 7 rotary drive motor; 11 first hydraulic cylinder, 12 fixed base, 13 barb, 14 probe rod; 15 rock burst microseismic monitoring sensor; 21 second hydraulic cylinder, 22 drill rod motor, 23 rotary base, 24 drill rod, 25 drill bit, 71, 72, 73 are schematic diagrams of rock burst microseismic monitoring points on different sections. DETAILED DESCRIPTION

[0030] The following embodiments are used to illustrate the specific implementation of the present invention, but the following embodiments are only used to illustrate the present invention in detail and do not limit the scope of the present invention in any way. Unless otherwise specified, the equipment components involved in the following embodiments are all conventional equipment components.

[0031] Example 1: A TBM-mounted rockburst microseismic automated monitoring system, see Figure 1-Figure 4 , including an annular installer 3, a rotary drive motor 7 is connected to the rear center of the annular installer 3; rock burst microseismic monitoring devices 1 are arranged along the circumferential surface of the annular installer 3, and an auxiliary drilling device is provided on one side of each rock burst microseismic monitoring device 1, and the rock burst microseismic monitoring device 1 and the auxiliary drilling device are both arranged along the radial direction of the annular installer 3.

[0032] The rockburst microseismic monitoring device 1 comprises a first hydraulic cylinder 11 , a fixed base 12 is arranged at the front end of the telescopic rod of the first hydraulic cylinder 11 , a probe rod 14 is detachably mounted on the fixed base 12 , and a rockburst microseismic monitoring sensor 15 is mounted on the side wall of the probe rod 14 .

[0033] The auxiliary drilling device includes a second hydraulic cylinder 21 , a drill rod motor 22 at the front end of the telescopic rod of the second hydraulic cylinder 21 , a drill rod 24 is installed at the front end of the drill rod motor 22 through a rotating base 23 , and a drill bit 25 is arranged at the front end of the drill rod 24 .

[0034] The monitoring system also includes a data acquisition device, which is a data acquisition integrated box. The rockburst microseismic monitoring sensor 15 is connected to the data acquisition integrated box through a data transmission line, and the data acquisition integrated box is connected to the computer terminal in the host room through a line. Among them, the rockburst microseismic monitoring sensor 15 is an existing equipment component. Those skilled in the art can select a suitable component type and model as long as it can realize the function of rockburst microseismic monitoring, and no limitation is made here.

[0035] Furthermore, the number of rockburst microseismic monitoring points on each section is the same as the number of rockburst microseismic monitoring devices 1 provided on the annular mounter 3. In this embodiment, four rockburst microseismic monitoring points are provided on each section. Figure 5 , where 71, 72, and 73 represent rockburst microseismic monitoring points on three sections respectively. A data acquisition integrated box can be connected to rockburst microseismic monitoring sensors on 1-3 sections, and the data acquisition integrated box can be set at a suitable position on the rock wall.

[0036] Furthermore, each explosion and microseismic monitoring device 1 forms a certain angle with its adjacent auxiliary drilling device, and the angle may be 10-20 degrees.

[0037] Further, a plurality of groups of barbs 13 are provided on the outer side wall of the probe rod 14, see Figure 2 .

[0038] Furthermore, a protective shell is provided outside the second hydraulic cylinder 21, the drill rod motor 22 and the drill rod 24; the drill rod 24 is a spiral drill rod, see Figure 4 .

[0039] Furthermore, an installer support frame is arranged on the annular installer 3, and the installer support frame includes horizontal steel supports and vertical steel supports in a cross shape, and an annular steel support fixed on the horizontal steel supports and the vertical steel supports; the explosion microseismic monitoring device and the auxiliary drilling device are both installed on the annular steel support.

[0040] It should be noted that the attached Figure 1-Figure 5 The structures, shapes, sizes and proportions of the components are schematic diagrams and do not represent the actual structures, shapes, sizes and proportions of the components. Those skilled in the art can understand the technical solutions in the present invention in conjunction with the drawings and will not have any misunderstanding on the implementation of the technical solutions in the present invention due to the drawings.

[0041] Embodiment 2: A method for rockburst microseismic monitoring using the TBM airborne rockburst microseismic automated monitoring system in Embodiment 1 comprises the following steps:

[0042] S1: According to the position and number of rock burst microseismic monitoring points on each section, pre-install the rock burst microseismic monitoring device and the auxiliary drilling device on the annular installer, and control the annular installer to rotate to a specified position during the TBM shutdown process so that the auxiliary drilling device corresponds to the position to be drilled; in this embodiment, four rock burst microseismic monitoring points are set on each section, and four sets of rock burst microseismic monitoring devices and auxiliary drilling devices are installed on the corresponding annular installer.

[0043] S2: The drill rod in the auxiliary drilling device is driven by the second hydraulic cylinder and the drill rod motor to drill holes at the corresponding position. After drilling, the drill rod is retracted. Using a ring installer, each set of auxiliary drilling devices corresponds to a rock burst microseismic monitoring point, so four monitoring points on a section can be drilled simultaneously.

[0044] S3: The rotating drive motor drives the annular installer to rotate, so that the explosion and microseismic monitoring device next to each auxiliary drilling device is turned to the drilling position, aimed at the borehole, and the probe rod is extended forward under the control of the first hydraulic cylinder and enters the borehole; the connection between the fixed base and the probe rod is removed, and the installation of the explosion and microseismic monitoring device at the rockburst microseismic monitoring point in the section is completed; after the rockburst microseismic monitoring points on one section are laid out, the TBM continues to move forward and lays out the rockburst microseismic monitoring points on the next section.

[0045] S4: The rockburst microseismic monitoring sensor on the probe rod collects rockburst microseismic data. After the data is collected, it is transmitted to the data collection integration device, and then to the host computer to process the collected data, output the rockburst monitoring results and issue a real-time warning. The data collection box can be installed at a suitable position on the rock wall. One data collection box can be connected to the rockburst microseismic monitoring sensors on 1-3 sections for data collection.

[0046] By analyzing and processing the collected data, rockburst prediction results are obtained, and the output rockburst prediction results are compared and corrected with the on-site rockburst monitoring results to achieve real-time early warning of rockburst, thereby greatly ensuring the safety of deep and extremely hard rock tunnel construction.

[0047] The data analysis and processing can be based on mathematical formulas derived from existing data and established in combination with existing software programming. The data analysis and processing process is not a technical feature to be protected by the present utility model. Those skilled in the art can adopt existing analysis and processing methods to achieve the above functions.

[0048] The present invention has been described in detail above in conjunction with the embodiments. However, those skilled in the art will appreciate that, without departing from the spirit of the present invention, the specific parameters in the embodiments described above may be changed to form a plurality of specific embodiments, which are all within the common variation range of the present invention and will not be described in detail herein.

Claims

1. A TBM airborne rockburst microseismic automated monitoring system, characterized in that: It comprises an annular installer, the center rear of which is connected to a rotating drive motor; rock burst microseismic monitoring devices are arranged along the circumferential surface of the annular installer, and an auxiliary drilling device is arranged on one side of each rock burst microseismic monitoring device, and the rock burst microseismic monitoring device and the auxiliary drilling device are both arranged along the radial direction of the annular installer; The rockburst microseismic monitoring device comprises a first hydraulic oil cylinder, a fixed base is arranged at the front end of the telescopic rod of the first hydraulic oil cylinder, a probe rod is detachably mounted on the fixed base, and a rockburst microseismic monitoring sensor is mounted on the side wall of the probe rod; The auxiliary drilling device comprises a second hydraulic oil cylinder, a drill rod motor is installed at the front end of the telescopic rod of the second hydraulic oil cylinder, a drill rod is installed at the front end of the drill rod motor, and a drill bit is arranged at the front end of the drill rod.

2. The TBM airborne rockburst microseismic automated monitoring system according to claim 1 is characterized in that: It also includes a data acquisition device, which is a data acquisition integrated box. The rock burst microseismic monitoring sensor is connected to the data acquisition integrated box via a data transmission line, and the data acquisition integrated box is connected to the computer terminal in the host room via a line.

3. The TBM airborne rockburst microseismic automatic monitoring system according to claim 2 is characterized in that: The number of rockburst microseismic monitoring points on each section is the same as the number of rockburst microseismic monitoring devices arranged on the annular installer; a data acquisition integrated box is connected to the rockburst microseismic monitoring sensors on 1-3 sections.

4. The TBM airborne rockburst microseismic automated monitoring system according to claim 1, characterized in that: There is an angle between each explosion and microseismic monitoring device and its adjacent auxiliary drilling device.

5. The TBM airborne rockburst microseismic automated monitoring system according to claim 1, characterized in that: A plurality of groups of barbs are arranged on the outer side wall of the probe rod.

6. The TBM airborne rockburst microseismic automated monitoring system according to claim 1, characterized in that: A protective shell is arranged on the second hydraulic cylinder, the drill rod motor and the outer side of the drill rod; the drill rod is a spiral drill rod.

7. The TBM airborne rockburst microseismic automated monitoring system according to claim 1, characterized in that: An installer support frame is arranged on the annular installer for installing the explosion microseismic monitoring device and the auxiliary drilling device; the installer support frame includes cross-shaped horizontal steel supports and vertical steel supports, and annular steel supports fixed on the horizontal steel supports and the vertical steel supports.

8. The TBM airborne rockburst microseismic automated monitoring system according to claim 7, characterized in that: The annular installer is an annular gear ring of the shield machine, which is located at the middle front shield position of the shield machine.

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