A real-time monitoring device for tunnel advance drilling and its use method

Abstract

The invention discloses a real-time monitoring device for tunnel advance drilling and a method for using the device, which belongs to the technical field of tunnel drilling, and comprises a drill rod for drilling holes, a monitoring assembly is installed at the mud outlet of the drill rod, and the monitoring assembly comprises a mounting shell, the mounting shell is sleeved outside the drill rod, a harmful gas detector is arranged on the top of the mounting shell, and staggered toggle pieces are installed on the inner bottom of the mounting shell relative to the two side walls; a stabilizing assembly is arranged at the front end of the drill rod for limiting the drill rod in the vertical direction; a separation assembly is arranged below the mounting shell for separating sand and gravel in the mud for detection; the separation assembly is fixedly connected to the bottom plate, the mounting strip is fixedly connected to the mounting shell through a horizontally extending adapter frame, and the adapter frame is fixedly connected to the bottom plate through a vertically extending stabilizing frame. The toggle piece of the invention squeezes the inflowing mud, so that the gas and liquid in the mud are more effectively separated, the detection accuracy and detection efficiency are improved, and the stability of the drilling movement of the drill rod is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel drilling, and relates to a real-time monitoring device for tunnel advance drilling and a use method thereof, which can be used for submarine tunnel drilling or stratum testing. Background Art

[0002] With the country's continued increase in transportation construction and the gradual improvement of the "eight vertical and eight horizontal" high-speed railway network, the Hong Kong-Zhuhai-Macao Bridge undersea tunnel, the Shenzhen-Zhongshan Channel undersea tunnel, and the Dalian Bay undersea tunnel have been completed and opened to traffic; a large number of tunnels such as the Xiangshan Shipu Port undersea tunnel, the Zhanjiang Bay undersea tunnel, and the Shenzhen-Jiangmen Railway Pearl River Estuary Tunnel project are gradually under construction. During the preliminary investigation and subsequent excavation and construction of the tunnel project, a large number of tunnels require formation testing and advance drilling, which requires more accurate and efficient monitoring devices.

[0003] Tunnel advance drilling is a pre-drilling technology during tunnel construction, which is mainly used to evaluate and improve the safety and efficiency of tunnel construction. The basic principle is to drill out a section of rock and soil in front of the tunnel before formal excavation to obtain geological information and prevent potential risks. During the drilling process, various harmful gases in the tunnel pose a huge threat to tunnel construction. In order to ensure the safety of the construction environment for workers, it is necessary to monitor the gas in the tunnel so that workers can take safety protection measures in time.

[0004] When conducting advance drilling of a tunnel, the gas in the hole will merge with the mud discharged by the horizontal drill. If the gas monitor is placed directly at the hole entrance for monitoring, the gas inside the hole will be taken away as the mud is discharged, which can easily lead to inaccurate monitoring. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a real-time monitoring device for tunnel advance drilling, in which a swinging paddle squeezes the inflowing mud to more effectively separate the gas and liquid in the mud, thereby improving the detection accuracy and efficiency, and at the same time improving the stability of the drill rod drilling movement.

[0006] Another object of the present invention is to provide a method for using a real-time monitoring device for tunnel advance drilling.

[0007] The technical solution adopted by the present invention is a real-time monitoring device for tunnel advance drilling, comprising a drill rod for drilling, a monitoring assembly installed at the mud discharge port of the drill rod, the monitoring assembly comprising a mounting shell, the mounting shell is sleeved outside the drill rod, a harmful gas detector is provided on the top of the mounting shell, staggered paddles are installed on the opposite side walls of the inner bottom of the mounting shell, the paddles are reciprocated up and down, and the mud is squeezed instantly, so that the gas moves upward after being separated from the mud;

[0008] The front end of the drill rod is provided with a stabilizing assembly, which includes an arc-shaped mounting bar, two mounting bars are arranged opposite to each other and surround the outside of the drill rod, and a plurality of rotatable rotating rods are arranged inside the mounting bar, the rotating rods are parallel to the drill rod, and the outer walls of the rotating rods are in contact with the outer wall of the drill rod, which are used to limit the drill rod in the vertical direction;

[0009] A separation assembly is provided below the mounting shell for separating sand and gravel from the mud for testing;

[0010] The separation assembly is fixedly connected to the bottom plate, the installation bar is fixedly connected to the side wall of the installation shell through a horizontally extending adapter frame, and the adapter frame is fixedly connected to the bottom plate through a vertically extending stabilizing frame.

[0011] Furthermore, a connecting pipe is provided on the top of the installation shell, a fan is provided on the top of the connecting pipe, an exhaust pipe is provided at the output end of the fan, and the harmful gas detector is installed on the exhaust pipe.

[0012] Further, both ends of each of the toggle plates close to the inner wall of the mounting shell are rotatably connected to the mounting shell through a mounting frame, and one side of each toggle plate close to the inner wall of the mounting shell is fixedly connected to the telescopic head of a symmetrically distributed telescopic rod, and the base of the telescopic rod is rotatably connected to the transfer rod, the transfer rod is parallel to the toggle plate and corresponds to it one by one, and the transfer rod that reciprocates up and down drives the toggle plate to swing back and forth up and down through the telescopic rod;

[0013] An elliptical drum is installed on the top of the mounting shell through a fixed frame, and the elliptical drum is driven to rotate by a motor, and a top plate is located above the top of the mounting shell, and a tension spring is installed between the top plate and the top of the mounting shell, and the top of the elliptical drum is against the bottom of the top plate; all the transfer rods are fixedly connected to the vertically extending sliding rods, and all the sliding rods are connected to form a sliding frame as a whole through a horizontal plate frame, and the horizontal plate frame is located above the drill rod, and the horizontal plate frame is fixedly connected to the top plate through a vertical connecting rod to realize the up and down reciprocating motion of the transfer rod;

[0014] A plurality of vertical guide rods are arranged between the top of the installation shell and the horizontal plate to guide the up and down reciprocating motion of the sliding frame.

[0015] Furthermore, a sealing cylinder is installed at the position where the drill rod passes through the mounting shell, and a rubber cylinder matching the shape of the drill rod is arranged inside the sealing cylinder, and the inner wall of the rubber cylinder is rotatably sealed with the outer wall of the drill rod.

[0016] Furthermore, the separation component includes a separation shell, the top of the separation shell is an arc-shaped surface, and the arc-shaped surface is located directly below the slurry discharge pipe port at the bottom of the mounting shell; a plurality of evenly distributed separation holes are opened on the arc-shaped surface, a sand and gravel scraping device is provided above the arc-shaped surface, a magnetic strip is installed on the sand and gravel scraping device, a supporting magnetic plate is provided below the arc-shaped surface, the magnetic properties of the magnetic strip and the opposite surface of the supporting magnetic plate are the same, a plurality of push rods corresponding to the positions of the separation holes are provided on the top of the supporting magnetic plate, and a plurality of reset springs are installed between the supporting magnetic plate and the bottom of the arc-shaped surface; when the sand and gravel scraping device approaches the arc-shaped surface, the supporting magnetic plate is pushed to move downward, and the push rod slides out from the inside of the separation hole; when the sand and gravel scraping device is away from the arc-shaped surface, the supporting magnetic plate is reset, and the push rod extends into the separation hole to clean the sand and gravel.

[0017] Furthermore, the sand and gravel scraping device includes a scraper, which is fixedly connected to the telescopic head of the vertical electric push rod, the base of the electric push rod is fixedly connected to the mounting block, one end of the mounting block is threadedly connected to the horizontally arranged screw rod, and the other end of the mounting block is sleeved on the support rod and can slide along the support rod, the support rod is parallel to the screw rod, and the screw rod is connected to the output shaft of the motor; the electric push rod and the screw rod are combined to make the bottom of the scraper move stably along the curved surface of the separation shell to scrape off the sand and gravel.

[0018] Furthermore, a liquid guide bin is provided below the arc-shaped surface, and a slag discharge bucket is installed on one side of the arc-shaped surface.

[0019] Furthermore, the top end of the return spring is fixedly connected to the support bar, and the support bar is installed on the side wall of the liquid guide bin at the bottom of the arc surface.

[0020] Furthermore, the mounting bar is fixedly connected to the adapter frame via a cylinder.

[0021] A method for using a tunnel advance drilling real-time monitoring device comprises the following steps:

[0022] Step 1: insert the drill rod into the installation shell, the drill rod and the installation shell are rotatably sealed and connected, and the bottom plate is fixed;

[0023] Step 2: Use the stabilizing component to limit the vertical position of the drill rod, so that the drilling operation of the drill rod can be more stable;

[0024] Step 3: The mud generated during the drilling process flows into the installation shell, and the toggle plate swings up and down to squeeze the mud instantly, so that the gas is separated from the mud and moves upward. The gas generated by the drilling is monitored in real time through the harmful gas detector;

[0025] Step 4: The mud that has been squeezed and exhausted flows into the separation component below to separate the sand and gravel from the mud and test the sand and gravel.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention sets a movable toggle plate in the monitoring assembly. When the mud mixture flows into the installation shell during drilling, the swinging toggle plate can quickly squeeze the inflowing mud, increase the instantaneous driving force of the mud, and then quickly and more effectively separate the gas and liquid in the mud, thereby improving the monitoring accuracy of the monitoring device. At the same time, the sliding frame that drives the toggle plate to swing up and down cleverly avoids the drill rod and does not interfere with the normal operation of the drill rod.

[0028] 2. The present invention provides a stabilizing assembly. When drilling, the rotating rods located above and below the outer wall of the drill rod in the stabilizing assembly can guide the movement of the drill rod, thereby making the drilling movement of the drill rod more stable. The stabilizing assembly is fixedly connected to the side wall of the mounting shell through a horizontally extending adapter frame, and the adapter frame is fixedly connected to the bottom plate through a vertically extending stabilizing frame, which has a compact structure and higher stability.

[0029] 3. The present invention sets a separation component at the end of the slurry discharge pipe to separate water and sand and gravel in the mud. The sand and gravel scraping device in the separation component and the supporting magnetic plate with a push rod cooperate with each other. As the scraper leaves the separation hole, the supporting magnetic plate moves upward, so that the push rod is inserted into the separation hole to push out the sand and gravel in the separation hole, and clean it in time to prevent blockage; as the scraper approaches the separation hole, the push rod slides out from the inside of the separation hole, so that the latest drilled sand and gravel can be scraped out to the slag discharge bucket in time, which is convenient for the hardness or composition measurement of the sand and gravel, and provides a basis for further adjustment of the construction plan or deployment of the construction strategy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0032] Figure 2 for Figure 1 Schematic diagram of part of the structure.

[0033] Figure 3 It is a schematic diagram of the assembly of the elliptical drum in the embodiment of the present invention.

[0034] Figure 4 It is a schematic structural diagram of the connection between the sliding frame and the guide frame in an embodiment of the present invention.

[0035] Figure 5 Schematic diagram of the structure of the separation component in the embodiment of the present invention.

[0036] Figure 6 Schematic diagram of the structure of the separation shell in an embodiment of the present invention.

[0037] Figure 7 Schematic diagram of the structure of the support bar and the support frame in the embodiment of the present invention.

[0038] Figure 8 Schematic diagram of the structure of the base plate and the stabilizing assembly in an embodiment of the present invention.

[0039] Fig. 9 for Figure 8 A schematic diagram of the structure of the enlarged part shown.

[0040] Among them: 1. Bottom plate; 2. Stabilizing component; 21. Stabilizing frame; 22. Adapter frame; 221. Cylinder; 222. Mounting bar; 223. Rotating rod; 3. Monitoring component; 31. Mounting shell; 311. Sliding frame; 312. Adapter rod; 313. Telescopic rod; 314. Guide rod; 315. Discharge pipe; 316. Sealing tube; 317. Rubber tube; 318. Vertical connecting rod; 32. Guide frame; 321. Mounting frame; 322. Toggle plate; 33. Top plate; 331. Tension spring ; 34. Connecting pipe; 341. Fan; 342. Exhaust pipe; 35. Fixed frame; 351. Elliptical drum; 4. Drill rod; 5. Separation assembly; 51. Separation shell; 511. Liquid guide bin; 512. Drain pipe; 513. Separation hole; 52. Support bar; 521. Reset spring; 53. Support magnetic plate; 531. Push rod; 6. Slag bucket; 7. Support frame; 71. Screw rod; 72. Mounting block; 73. Electric push rod; 74. Scraper; 75. Magnetic strip; 8. Harmful gas detector. DETAILED DESCRIPTION

[0041] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] Example 1

[0043] A real-time monitoring device for tunnel advance drilling, such as Figure 1-4 As shown, it includes a drill rod 4 for drilling, and a monitoring component 3 is installed at the mud discharge outlet of the drill rod 4. The monitoring component 3 includes a mounting shell 31, and the mounting shell 31 is sleeved outside the drill rod 4. A connecting pipe 34 connected to the mounting shell 31 is provided on the top of the mounting shell 31, and a fan 341 is provided on the top of the connecting pipe 34. The output end of the fan 341 is provided with a connected exhaust pipe 342, and a harmful gas detector 8 is installed on the exhaust pipe 342. A slurry discharge pipe 315 is provided at the bottom of the mounting shell 31.

[0044] A guide frame 32 is provided inside the mounting shell 31, and staggered mounting frames 321 are provided on both sides of the guide frame 32. A rotatably connected toggle plate 322 is provided inside the mounting frame 321. A symmetrically distributed telescopic rod 313 is provided on the outer wall of each toggle plate 322, and the transfer rod 312 is parallel to the toggle plate 322 and corresponds one to one; the ends of the two telescopic rods 313 on the same toggle plate 322 are rotatably connected to the same transfer rod 312, and the transfer rods 312 on both sides are fixedly connected to the same sliding frame 311; specifically, all the transfer rods 312 on both sides are fixedly connected to the vertically extending sliding rods, and all the sliding rods are connected to form a sliding frame 311 as a whole through a horizontal plate frame, and the horizontal plate frame is located above the drill rod 4, and the horizontal plate frame is fixedly connected to the top plate 33 through a vertical connecting rod 318, which cleverly avoids the drill rod 4 and does not interfere with the normal operation of the drill rod 4.

[0045] A plurality of fixedly connected guide rods 314 are provided at the top of the sliding frame 311, and the top ends of the guide rods 314 penetrate the mounting shell 31 and are slidably connected to the inside of the mounting shell 31; or the top ends of the guide rods 314 are fixedly connected to the mounting shell 31, and the lower ends of the guide rods 314 are sleeved in the sliding rods of the sliding frame 311 and can slide relatively.

[0046] A tension spring 331 is provided at the bottom of the top plate 33, and the bottom end of the tension spring 331 is fixedly connected to the top of the mounting shell 31. Fixed frames 35 are provided on both sides of the bottom of the top plate 33. An elliptical roller 351 which is rotatably connected is provided inside the fixed frame 35. The outer wall of the elliptical roller 351 abuts against and is slidably connected to the bottom wall of the top plate 33. A motor for driving the elliptical roller 351 is provided on the outer wall of the fixed frame 35.

[0047] During use, the control motor drives the elliptical drum 351 to rotate. When the outer wall of the relatively longer side of the elliptical drum 351 is against the bottom of the top sheet 33, the elliptical drum 351 can squeeze the top sheet 33 so that the top sheet 33 drives the sliding frame 311 to move upward through the vertical connecting rod 318. When the relatively shorter side of the elliptical drum 351 rotates to a position opposite to the bottom of the top sheet 33, the squeezing of the top sheet 33 is reduced. At this time, the sliding frame 311 moves downward by its own gravity and the force of the tension spring 331. During the up and down reciprocating movement of the sliding frame 311, the switching rod 312 and the telescopic rod 313 can drive the toggle plate 322 to swing back and forth up and down. The up and down reciprocating toggle plate 322 can increase the instantaneous driving force of the mud, squeeze the mud instantly, and then separate the gas and liquid in the mud more effectively, so that the working fan 341 can smoothly absorb the gas in the mud flowing out of the borehole, so that the harmful gas detector 8 located on the exhaust pipe 342 can monitor the discharged gas in real time.

[0048] In the embodiment of the present invention, the mechanism for driving the paddle 322 to reciprocate up and down does not have a stirring shaft, which does not affect the normal operation of the drill rod 4 and has a better separation effect. Because if the stirring shaft passes through the top of the mounting shell 31, it will interfere with the normal operation of the drill rod 4; if the stirring shaft passes through the bottom of the mounting shell 31, it will interfere with the setting of the slurry discharge pipe 315 below, and there is a problem of liquid leakage.

[0049] A sealing cylinder 316 is installed at the position where the drill rod 4 passes through the mounting shell 31. A rubber cylinder 317 is arranged inside the sealing cylinder 316. The shape of the rubber cylinder 317 matches the shape of the drill rod 4. The inner wall of the rubber cylinder 317 is rotatably sealed and connected to the outer wall of the drill rod 4. Specifically, the inner wall of the rubber cylinder 317 is in contact with the outer wall of the drill rod 4 and can slide relatively. By arranging the rubber cylinder 317 inside the sealing cylinder 316, during the drilling process of the drill rod 4, the rubber cylinder 317 can seal the connection between the drill rod 4 and the mounting shell 31, so as to prevent the mud generated by the drilling from flowing out from the connection of the drill rod 4 and causing leakage.

[0050] like Figure 1 and Figure 5-7 As shown, a separation component 5 is provided below the monitoring component 3, and the separation component 5 includes a separation shell 51, and the top of the separation shell 51 is an arc-shaped surface, and the arc-shaped surface is located directly below the end of the slurry discharge pipe 315, and a liquid guide bin 511 is provided below the arc-shaped surface; a plurality of evenly distributed separation holes 513 are opened on the arc-shaped surface, and a movable support magnetic plate 53 is provided inside the liquid guide bin 511, and a plurality of evenly distributed top rods 531 are provided on the top of the support magnetic plate 53, and the positions of the top rods 531 correspond to the positions of the separation holes 513, and the diameter specification of the end section of the top rods 531 is smaller than the diameter specification of the separation holes 513; a slag discharge bucket 6 is installed on one side of the arc-shaped surface, and a liquid discharge pipe 512 is provided at a position opposite to the outer wall of the separation shell 51 and the liquid guide bin 511, and support bars 52 are provided on both sides of the liquid guide bin 511, and the support bars 52 are connected to the support magnetic plate 53 A number of evenly distributed return springs 521 are arranged in between, the top of the return spring 521 is fixedly connected to the bottom of the support bar 52, and the bottom end of the return spring 521 is fixedly connected to the top of the support magnetic plate 53. The outside of the separation shell 51 and the slag bucket 6 is provided with the same fixedly connected support frame 7, the horizontally arranged screw rod 71 is rotatably connected to the support frame 7, the screw rod 71 is threadedly connected to one end of the mounting block 72, and the other end of the mounting block 72 is sleeved on the support rod and can slide along the support rod, the support rod is parallel to the screw rod 71, the bottom of the mounting block 72 is fixedly connected to the base of the electric push rod 73, the telescopic head of the vertical electric push rod 73 is fixedly connected to the scraper 74, and magnetic strips 75 are arranged on both sides of the outer wall of the scraper 74, and the magnetic properties of the magnetic strips 75 and the opposite surface of the supporting magnetic plate 53 are the same, and a motor for driving the screw rod 71 is arranged on the support frame 7.

[0051] Since the bottom of the guide frame 32 is an inclined structure, the separated mud can flow along the inclined slope toward the slurry discharge pipe 315, so that the separated mud can flow into the separation component 5 for solid-liquid separation.

[0052] During use, the mud is separated into solid and liquid through the separation hole 513, so that the water in the mud can flow into the liquid guide bin 511 below the separation shell 51, and flow out through the drainage pipe 512 connected to the liquid guide bin 511, and the separated sand and gravel particles are located on the arc surface; the rotating screw 71 drives the mounting block 72 to slide on the support frame 7 through the threaded structure to adjust the horizontal position of the scraper 74; during the sliding process, the electric push rod 73 drives the scraper 74 to move in the vertical direction, so that the bottom of the scraper 74 can move stably along the arc surface to scrape the sand and gravel to the slag bucket 6. When the magnetic strip 75 moves downward with the scraper 74, the repulsive force between the magnetic strip 75 and the support magnetic plate 53 drives the support magnetic plate 53 to move downward, so that the top rod 531 on the support magnetic plate 53 slides out from the inside of the separation hole 513, thereby reducing the obstruction to the moving track of the scraper 74. When the magnetic strip 75 moves upward with the scraper 74, the repulsive force between the magnetic strip 75 and the supporting magnetic plate 53 is released. At this time, the supporting magnetic plate 53 is driven upward by the force of the reset spring 521, so that the push rod 531 is inserted into the separation hole 513 to push out the sand and gravel in the separation hole 513, thereby cleaning the separation hole 513.

[0053] like Figure 1 and Figure 8-9 As shown, a stabilizing component 2 is provided on the top of the base plate 1, and the stabilizing component 2 includes a stabilizing frame 21, which is fixedly arranged on the top of the base plate 1, and an adapter frame 22 is provided on the top of the stabilizing frame 21, and the side wall of the adapter frame 22 is fixedly connected to the side wall of the mounting shell 31, and two groups of symmetrically distributed cylinders 221 are arranged at the inside of the adapter frame 22 opposite to the drill rod 4, and a mounting bar 222 is arranged at the top of the same group of cylinders 221, and the inner wall of the mounting bar 222 is an arc structure, and a plurality of rotating rods 223 are arranged inside the mounting bar 222, and the outer wall of the rotating rod 223 is against the outer wall of the drill rod 4 and can roll; in the embodiment, the side of the rotating rod 223 close to the mounting bar 222 can be embedded in grease and can roll.

[0054] During use, the drill rod 4 is limited in the vertical direction by rotating the rod 223, so that the movement of the drill rod 4 during the drilling process is more stable. At the same time, the adapter frame 22 is connected to the mounting shell 31, which can also provide auxiliary support for the installation of the mounting shell 31 and improve stability.

[0055] The monitoring component 3, the separation component 5 and the stabilization component 2 of the embodiment of the present invention are compactly arranged and support each other, thereby improving the efficiency and accuracy of monitoring during advance drilling and improving the working stability of the drill rod 4.

[0056] Example 2

[0057] A method for using a tunnel advance drilling real-time monitoring device comprises the following steps:

[0058] Step 1: first insert the drill rod 4 into the mounting shell 31, seal and connect the drill rod 4 to the mounting shell 31 through the sealing tube 316 and the rubber tube 317, and the drill rod 4 can rotate normally; fix the bottom plate 1 to fix the entire device.

[0059] Step 2: Control the cylinder 221 to drive the mounting bar 222 to move toward the direction close to the drill rod 4 until the outer wall of the rotating rod 223 in the mounting bar 222 abuts against the outer wall of the drill rod 4, thereby limiting the vertical position of the drill rod 4 and making the drilling operation of the drill rod 4 more stable.

[0060] Step three: Control the external horizontal drilling machine to drive the drill rod 4 to perform drilling operations. The mud generated during the drilling process flows into the inside of the mounting shell 31. The toggle plate 322 swings back and forth up and down, instantly squeezing the mud, so that the gas and liquid in the mud are more effectively separated, and the gas moves upward; control the fan 341 to work, and transport the gas after gas-liquid separation to the outside through the exhaust pipe 342, and monitor the gas generated by drilling in real time through the harmful gas detector 8.

[0061] Step 4: While performing gas monitoring, the separation component 5 performs solid-liquid separation on the mud, separates the sand and gravel in the mud, and detects the sand and gravel; at the same time, it is convenient for the subsequent independent discharge of the liquid and the remaining solid.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A real-time monitoring device for tunnel advance drilling, comprising a drill rod (4) for drilling, characterized in that: The mud outlet of the drill pipe (4) is equipped with a monitoring assembly (3), the monitoring assembly (3) comprising a mounting shell (31), the mounting shell (31) being sleeved outside the drill pipe (4), a harmful gas detector (8) being provided on the top of the mounting shell (31), and staggeredly distributed paddles (322) being provided on opposite side walls of the inner bottom of the mounting shell (31), the paddles (322) swinging back and forth up and down, squeezing the mud instantly, so that the gas separates from the mud and moves upward; The front end of the drill rod (4) is provided with a stabilizing assembly (2), the stabilizing assembly (2) comprising an arc-shaped mounting bar (222), the two mounting bars (222) being arranged opposite to each other and surrounding the outside of the drill rod (4), a plurality of rotatable rotating rods (223) being arranged inside the mounting bars (222), the rotating rods (223) being parallel to the drill rod (4), the outer walls of the rotating rods (223) being in contact with the outer walls of the drill rod (4), and being used to limit the drill rod (4) in the vertical direction; A separation assembly (5) is provided below the mounting shell (31) for separating sand and gravel from the mud for testing; The separation assembly (5) is fixedly connected to the bottom plate (1), the mounting bar (222) is fixedly connected to the side wall of the mounting shell (31) via a horizontally extending adapter frame (22), and the adapter frame (22) is fixedly connected to the bottom plate (1) via a vertically extending stabilizing frame (21).

2. According to claim 1, a real-time monitoring device for tunnel advance drilling is characterized in that: A connecting pipe (34) is provided on the top of the installation shell (31), a fan (341) is provided on the top of the connecting pipe (34), an exhaust pipe (342) is provided at the output end of the fan (341), and the harmful gas detector (8) is installed on the exhaust pipe (342).

3. According to claim 1, a real-time monitoring device for tunnel advance drilling is characterized in that: The two ends of each of the toggle pieces (322) close to the inner wall of the mounting shell (31) are rotatably connected to the mounting shell (31) via the mounting frame (321); the side of each toggle piece (322) close to the inner wall of the mounting shell (31) is fixedly connected to the telescopic head of a symmetrically distributed telescopic rod (313); the base of the telescopic rod (313) is rotatably connected to the transfer rod (312); the transfer rod (312) and the toggle piece (322) are parallel and one-to-one corresponding; the transfer rod (312) that reciprocates up and down drives the toggle piece (322) to swing back and forth up and down through the telescopic rod (313); An elliptical roller (351) is installed on the top of the mounting shell (31) via a fixing frame (35), the elliptical roller (351) is driven to rotate by a motor, a top plate (33) is located above the top of the mounting shell (31), a tension spring (331) is installed between the top plate (33) and the top of the mounting shell (31), and the top of the elliptical roller (351) is against the bottom of the top plate (33); all the transfer rods (312) are fixedly connected to the vertically extending sliding rods, and all the sliding rods are connected to form a sliding frame (311) as a whole via a horizontal plate frame, the horizontal plate frame is located above the drill rod (4), and the horizontal plate frame is fixedly connected to the top plate (33) via a vertical connecting rod (318), so as to realize the up and down reciprocating movement of the transfer rod (312); A plurality of vertical guide rods (314) are provided between the top of the mounting shell (31) and the horizontal plate to guide the up and down reciprocating motion of the sliding frame (311).

4. The real-time monitoring device for tunnel advance drilling according to claim 1, characterized in that: A sealing cylinder (316) is installed at the position where the drill rod (4) passes through the mounting shell (31), and a rubber cylinder (317) matching the shape of the drill rod (4) is provided inside the sealing cylinder (316), and the inner wall of the rubber cylinder (317) is rotatably sealedly connected to the outer wall of the drill rod (4).

5. The real-time monitoring device for tunnel advance drilling according to claim 1, characterized in that: The separation assembly (5) comprises a separation shell (51), the top of the separation shell (51) being an arc-shaped surface, the arc-shaped surface being located directly below the port of the slurry discharge pipe (315) at the bottom of the mounting shell (31); a plurality of evenly distributed separation holes (513) are formed on the arc-shaped surface, a sand and gravel scraping device is provided above the arc-shaped surface, a magnetic strip (75) is installed on the sand and gravel scraping device, and a supporting magnetic plate (53) is provided below the arc-shaped surface, the magnetic properties of the opposing surfaces of the magnetic strip (75) and the supporting magnetic plate (53) being the same, and the supporting magnetic plate A plurality of push rods (531) corresponding to the position of the separation hole (513) are provided at the top of the (53), and a plurality of reset springs (521) are installed between the support magnetic plate (53) and the bottom of the arc-shaped surface; when the sand and gravel scraping device approaches the arc-shaped surface, the support magnetic plate (53) is pushed to move downward, and the push rods (531) slide out from the separation hole (513); when the sand and gravel scraping device moves away from the arc-shaped surface, the support magnetic plate (53) is reset, and the push rods (531) extend into the separation hole (513) to clean the sand and gravel.

6. A real-time monitoring device for tunnel advance drilling according to claim 5, characterized in that: The sand and gravel scraping device comprises a scraper (74), the scraper (74) being fixedly connected to the telescopic head of a vertical electric push rod (73), the base of the electric push rod (73) being fixedly connected to a mounting block (72), one end of the mounting block (72) being threadedly connected to a horizontally arranged screw rod (71), the other end of the mounting block (72) being sleeved on a support rod and being able to slide along the support rod, the support rod being parallel to the screw rod (71), and the screw rod (71) being connected to an output shaft of a motor; the electric push rod (73) and the screw rod (71) are combined so that the bottom of the scraper (74) moves stably along the arc surface of the separation shell (51) to scrape sand and gravel.

7. A real-time monitoring device for tunnel advance drilling according to claim 6, characterized in that: A liquid guide bin (511) is provided below the arc-shaped surface, and a slag discharge bucket (6) is installed on one side of the arc-shaped surface.

8. A real-time monitoring device for tunnel advance drilling according to claim 7, characterized in that: The top end of the return spring (521) is fixedly connected to the support bar (52), and the support bar (52) is mounted on the side wall of the liquid guide bin (511) at the bottom of the arc surface.

9. The real-time monitoring device for tunnel advance drilling according to claim 1, characterized in that: The mounting bar (222) is fixedly connected to the adapter frame (22) via a cylinder (221).

10. The method for using the tunnel advance drilling real-time monitoring device according to claim 1, characterized in that: The following steps are involved: Step 1: insert the drill rod (4) into the mounting shell (31), the drill rod (4) and the mounting shell (31) are rotatably sealed and connected, and the bottom plate (1) is fixed; Step 2: The drill rod (4) is limited in the vertical direction by the stabilizing component (2), so that the movement of the drill rod (4) during drilling operation is more stable; Step 3: The mud generated during the drilling process flows into the interior of the mounting shell (31), and the toggle plate (322) swings back and forth up and down, instantly squeezing the mud, so that the gas is separated from the mud and moves upward, and the gas generated by the drilling is monitored in real time through the harmful gas detector (8); Step 4: The mud after extrusion and exhaust flows into the separation component (5) below, and the sand and gravel in the mud are separated and tested.

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