Loess stratum shallow-buried tunnel large pipe shed drilling boulder treatment device and method

Abstract

The application discloses a loess stratum shallow-buried tunnel large pipe shed drilling boulder treatment device and method, which comprises a power mechanism, a drill rod, a collecting mechanism and a data processing control mechanism. The drill rod is arranged on the power mechanism, a drill bit is arranged on the drill rod, the power mechanism drives the drill rod and the drill bit to perform drilling operation, the collecting mechanism is arranged on the drill rod and is used for collecting data in the drilling process, the data processing control mechanism is connected with the collecting mechanism, the collecting mechanism transmits the monitored data to the data processing control mechanism, the data processing control mechanism analyzes the drill rod condition, and determines whether there is a boulder in front of the drill rod and information of the boulder. The loess stratum shallow-buried tunnel large pipe shed drilling boulder treatment device and method solve the problems of low drilling efficiency, serious equipment wear, inclination and deviation, poor grouting effect and large boulder treatment difficulty in the prior art.

Description

Technical Field

[0001] This invention relates to the field of tunnel engineering technology, specifically to a device and method for handling isolated boulders during drilling in shallow tunnels in loess strata. Background Technology

[0002] Loess strata refer to geological layers in which the soil contains a large amount of loess components. They are widely distributed in Northwest my country. Due to their unique formation and structure, the interparticle bonding of loess is weak, resulting in low strength. Under external forces, they are prone to compression deformation. Loess strata have high porosity and good permeability, but this also causes their mechanical properties to further decline when subjected to water erosion. Loess is prone to disintegration when it comes into contact with water, forming a mud-like substance, which seriously affects its stability. Therefore, loess strata have low strength and high compressibility.

[0003] Therefore, loess strata are prone to instability during tunnel excavation, causing safety hazards such as collapse and deformation. In order to ensure the safety and construction efficiency of tunnel excavation, ultra-long pipe roof support technology is usually required. Ultra-long pipe roofs can not only provide effective initial support, but also enhance the stability of loess strata through combined pipe roof grouting technology. However, in actual construction, there are often a certain number of isolated rocks in the loess strata, and the presence of these isolated rocks brings many challenges to the drilling of pipe roofs.

[0004] In existing technologies, due to the poor mechanical properties of loess strata, drill bits are easily subjected to resistance, especially when encountering boulders, resulting in a significant decrease in drilling efficiency. Existing drilling equipment and technologies struggle to penetrate boulders quickly and effectively, leading to slow overall construction progress. Boulders in loess strata not only affect drilling efficiency but also exacerbate wear on drill bits and related equipment, requiring frequent drill bit replacements and equipment maintenance, which increases construction costs and prolongs the construction period. During drilling, drill bits are prone to deflection when encountering boulders, causing the pipe roof to tilt or shift during installation. This severely affects the support effect of the pipe roof, increasing the risks and difficulties of tunnel construction. While pipe roof combined grouting technology aims to improve the stability of loess strata, the grouting effect is difficult to guarantee when the pipe roof is tilted or shifted, and the grout is difficult to distribute evenly, potentially leading to unsatisfactory support or even secondary disasters. Existing technologies have limited means of dealing with boulders, mainly relying on manual breaking or external mechanical equipment. This approach is not only inefficient but also poses certain safety risks, especially in confined construction environments where operation is even more difficult. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for handling boulders during drilling in shallow tunnels in loess strata, which solves the problems of low drilling efficiency, severe equipment wear, tilting and offset, poor grouting effect, and difficulty in handling boulders in the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for handling isolated boulders during large-pipe roof drilling in shallow-buried tunnels in loess strata, comprising:

[0007] Power mechanism;

[0008] A drill rod is mounted on a power mechanism, and a drill bit is mounted on the drill rod. The power mechanism drives the drill rod and the drill bit to perform drilling operations.

[0009] Data acquisition mechanism; This data acquisition mechanism is mounted on the drill pipe and is used to collect and monitor data during the drilling process;

[0010] A data processing and control mechanism, connected to a data acquisition mechanism, transmits monitored data to the data processing and control mechanism. The data processing and control mechanism analyzes the drill pipe condition to determine whether there are boulders in front of the drill pipe and provides information about these boulders.

[0011] A boulder crushing mechanism is connected to the drill pipe and is used to crush boulders in a short time during the drilling process.

[0012] Preferably, the power mechanism includes an electric motor.

[0013] Preferably, the output end of the motor is fixedly connected to one end of the drill rod.

[0014] Preferably, the data acquisition mechanism includes a sensor device, which is disposed on the drill pipe at the end away from the motor.

[0015] Preferably, the boulder breaking mechanism includes a rigid wire mounted on the drill rod, the rigid wire being connected to an external power source, the rigid wire being arranged on the drill rod, and an ionization electrode being connected to the end of the rigid wire away from the motor, the ionization electrode being located near the drill bit.

[0016] Preferably, the data processing control mechanism includes a data processing control device connected to the sensor device.

[0017] A method for handling isolated boulders during drilling in shallow loess tunnels using a large pipe roof system, comprising the aforementioned boulder handling device, and the method including the following steps:

[0018] S1: Insert the drill bit into the loess layer, and use the motor to drive the drill rod to rotate to carry out pipe roof drilling work;

[0019] S2: Install sensor devices to monitor various data during the drill pipe drilling process in real time;

[0020] S3: The sensor device feeds back the monitored data to the data processing and control device to analyze the condition of the drill pipe. When the drill pipe parameters change abruptly, the sensor device emits electromagnetic waves to detect whether there is a boulder in front of the drill pipe and to determine the specific information of the boulder.

[0021] S4: Press the drill bit against the boulder, slowly rotate the drill bit to drill a hole in the surface of the boulder, then fill the drill rod with tap water, connect the rigid wire, and repeatedly strike the ionization electrode to impact and break the boulder.

[0022] S5: After cleaning the hole, slowly rotate the drill bit again, fill the drill rod with tap water, and ignite the ionization electrode until the boulder is completely broken. Use the sensor device to emit electromagnetic waves to detect whether the boulder in front of the drill rod has been completely removed.

[0023] As can be seen from the above technical solution, the present invention has the following beneficial effects:

[0024] This invention relates to a device and method for handling boulders during drilling in shallow-buried tunnels in loess strata. When a sudden change occurs in front of the drill rod, a sensor device releases electromagnetic waves to detect the volume and shape of the boulder. This accurately identifies the location and size of the boulder, ensuring targeted and effective subsequent treatment. The sensor device can monitor various data during the drilling process in real time. This real-time monitoring can promptly detect anomalies and prevent equipment damage or construction delays caused by boulders. A strong ionization effect is generated through an external power source, rigid wires, and ionizing electrodes, impacting the boulder and generating a powerful crushing force. This method can effectively crush boulders in a short time, ensuring the continuity and smooth progress of the drilling process. It solves the problems of low drilling efficiency, severe equipment wear, tilting and offset issues, poor grouting effects, and the difficulty of handling boulders in existing technologies. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a flowchart of the method of the present invention.

[0028] In the diagram: 1. Power mechanism; 11. Motor; 2. Drill rod; 3. Drill bit; 4. Data acquisition mechanism; 41. Sensor device; 5. Data processing and control mechanism; 51. Data processing and control device; 6. Boulder crushing mechanism; 61. Hard wire; 62. Ionizing electrode; 7. Loess stratum; 8. Boulder. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figure 1 and Figure 2 As shown, a device for handling isolated boulders during drilling in shallow-buried tunnels in loess strata includes a power mechanism 1, a drill rod 2, a drill bit 3, a data acquisition mechanism 4, a data processing and control mechanism 5, and a boulder crushing mechanism 6. The drill rod 2 is mounted on the power mechanism 1, the drill bit 3 is mounted on the drill rod 2, the data acquisition mechanism 4 is mounted on the drill rod 2, the data processing and control mechanism 5 is connected to the data acquisition mechanism 4, and the boulder crushing mechanism 6 is connected to the drill rod 2. The power mechanism 1 drives the drill rod 2 and the drill bit 3 to perform drilling operations. The function of the data acquisition mechanism 4 is to collect and monitor data during the drilling process. The data acquisition mechanism 4 transmits the monitored data to the data processing and control mechanism 5. The data processing and control mechanism 5 analyzes the condition of the drill rod 2 to determine whether there are isolated boulders 8 in front of the drill rod 2 and the information about the isolated boulders. The function of the boulder crushing mechanism 6 is to crush the isolated boulders 8 in a short time during the drilling process, which improves construction efficiency, reduces wear on equipment, solves the tilting and offset problems during the drilling process, and provides good grouting effect, effectively handling the problem of isolated boulders.

[0031] like Figure 1 and Figure 2As shown, the power mechanism 1 includes a motor 11, the output end of which is fixedly connected to one end of the drill rod 2. The acquisition mechanism 4 includes a sensor device 41, which is mounted on the drill rod 2 at the end away from the motor 11. The boulder crushing mechanism 6 includes a rigid wire 61 and an ionization electrode 62. The rigid wire 61 is mounted on the drill rod 2 and connected to an external high-voltage power supply. The end of the rigid wire 61 away from the motor 11 is connected to the ionization electrode 62, which is positioned near the drill bit 3. When the drill bit 3 encounters a boulder 8, the ionization electrode 62 facilitates the crushing of the boulder. The boulder crushing mechanism 6 generates a strong ionization effect through the high-voltage power supply, the rigid wire 61, and the ionization electrode 62. Impacting the boulder 8 generates a powerful crushing force, which can effectively break the boulder 8 in a short time, ensuring the continuity and smooth progress of the drilling process. The data processing and control mechanism 5 includes a data processing and control device 51, which is connected to a sensor device 41. The sensor device 41 collects various data during the drilling process, such as drilling speed, torque, pressure, and vibration, and transmits the drilling data collected at the pipe roof end to the computer in real time. The data receiving and analysis software on the computer stores, analyzes, and displays the received data, helping construction personnel to understand the drilling situation in real time and make timely adjustments. Real-time monitoring can detect abnormalities in a timely manner and prevent equipment damage or construction delays caused by the boulder 8 during the drilling process.

[0032] like Figure 3 As shown, a method for handling boulders during drilling in shallow loess tunnels using a large pipe roof is also provided. This method employs the aforementioned boulder handling device for shallow loess tunnels using a large pipe roof, and includes the following steps:

[0033] S1: Insert the drill bit into the loess layer, and use the motor to drive the drill rod to rotate to carry out pipe roof drilling work;

[0034] S2: Install sensor devices to monitor various data during the drill pipe drilling process in real time;

[0035] S3: The sensor device feeds back the monitored data to the data processing and control device to analyze the condition of the drill pipe. When the drill pipe parameters change abruptly, the sensor device emits electromagnetic waves to detect whether there is a boulder in front of the drill pipe and to determine the specific information of the boulder.

[0036] S4: Press the drill bit against the boulder, slowly rotate the drill bit to drill a hole in the surface of the boulder, then fill the drill rod with tap water, connect the rigid wire, and repeatedly strike the ionization electrode to impact and break the boulder.

[0037] S5: After cleaning the hole, slowly rotate the drill bit again, fill the drill rod with tap water, and ignite the ionization electrode until the boulder is completely broken. Use the sensor device to emit electromagnetic waves to detect whether the boulder in front of the drill rod has been completely removed.

[0038] In step S2, the sensor device 41 is installed at the end of the drill rod 2. The sensor device 41 monitors the data of the drill rod 2 in real time during the drilling process, including drilling speed, torque, pressure, and vibration. In step S3, the specific information of the boulder 8 is determined, including the volume, shape and other parameters of the boulder. In step S5, the ionizing electrode is ignited until the boulder 8 is completely broken and the boulder parameters return to normal.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for handling isolated boulders during drilling in shallow tunnels in loess strata, characterized in that, include: Power mechanism (1); Drill rod (2), which is mounted on power mechanism (1), and drill bit (3) is mounted on drill rod (2). Power mechanism (1) drives drill rod (2) and drill bit (3) to perform drilling operation; Data acquisition mechanism (4); the data acquisition mechanism (4) is installed on the drill pipe (2); the data acquisition mechanism (4) is used to acquire and monitor data during the drilling process; A data processing control mechanism (5) is connected to an acquisition mechanism (4). The acquisition mechanism (4) transmits the monitored data to the data processing control mechanism (5). The data processing control mechanism (5) analyzes the condition of the drill pipe (2) to determine whether there is a boulder in front of the drill pipe (2) and the information about the boulder. A boulder crushing mechanism (6) is connected to the drill rod (2). The boulder crushing mechanism (6) is used to crush boulders in a short time during drilling. The boulder crushing mechanism (6) includes a rigid wire (61) set on the drill rod (2). The rigid wire (61) is connected to an external power source. The rigid wire (61) is arranged on the drill rod (2). The end of the rigid wire (61) away from the motor (11) is connected to an ionization electrode (62). The ionization electrode (62) is set near the drill bit (3). The boulder crushing mechanism (6) is used to: after drilling a hole in the surface of the boulder through the drill bit (3) and filling the drill rod (2) with water, connect the external power source through the rigid wire (61) to repeatedly strike the ionization electrode (62) to impact and crush the boulder.

2. The device for handling isolated boulders during drilling in shallow loess tunnels according to claim 1, characterized in that: The power mechanism (1) includes a motor (11).

3. The device for handling isolated boulders during drilling in shallow loess tunnels according to claim 2, characterized in that: The output end of the motor (11) is fixedly connected to one end of the drill rod (2).

4. The device for handling isolated boulders during drilling in shallow loess tunnels according to claim 2, characterized in that: The acquisition mechanism (4) includes a sensor device (41), which is located on the drill rod (2) at one end away from the motor (11).

5. The device for handling isolated boulders during large-pipe roof drilling in shallow loess strata according to claim 4, characterized in that: The data processing control mechanism (5) includes a data processing control device (51) connected to the sensor device (41).

6. A method for handling isolated boulders during drilling in shallow-buried tunnels in loess strata, characterized in that, The method of using the large pipe roof drilling boulder treatment device for shallow buried tunnels in loess strata according to any one of claims 1-5 includes the following steps: S1: Insert the drill bit into the loess layer, and use the motor to drive the drill rod to rotate to carry out pipe roof drilling work; S2: Install sensor devices to monitor various data during the drill pipe drilling process in real time; S3: The sensor device feeds back the monitored data to the data processing and control device to analyze the condition of the drill pipe. When the drill pipe parameters change abruptly, the sensor device emits electromagnetic waves to detect whether there is a boulder in front of the drill pipe and to determine the specific information of the boulder. S4: Press the drill bit against the boulder, slowly rotate the drill bit to drill a hole in the surface of the boulder, then fill the drill rod with tap water, connect the rigid wire, and repeatedly strike the ionization electrode to impact and break the boulder. S5: After cleaning the hole, slowly rotate the drill bit again, fill the drill rod with tap water, and ignite the ionization electrode until the boulder is completely broken. Use the sensor device to emit electromagnetic waves to detect whether the boulder in front of the drill rod has been completely removed.

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