Red layer soft rock large-section tunnel anchor rod support intelligent construction device

Abstract

The invention discloses a red-layer soft rock large-section tunnel anchor rod supporting intelligent construction device which comprises automatic construction equipment and a red-layer soft rock supporting anchor rod matched with the automatic construction equipment for use, and the red-layer soft rock supporting anchor rod is a drilling-anchoring-grouting-drainage integrated anchor rod. Comprising an anchor rod top end part, an anchor rod main body part, an anchor rod tail end part, a drill bit, a grouting inlet, a grouting outlet, a grouting channel, a metal wire, a drainage pipeline, a water through hole, a power supply, a drainage hole, a pre-embedded base plate and a grout stop sleeve, the automatic construction equipment comprises a bolting and grouting system, a position adjusting system and a carrier system. The supporting anchor rod in the red layer soft rock large-section tunnel is constructed through the intelligent construction device, so that the supporting position of the anchor rod is more accurate than before, and meanwhile, the intelligent construction device is used during anchor rod construction, so that the manual dependence is smaller, and the construction efficiency is higher.

Description

Technical Field

[0001] The present invention belongs to the technical field of tunnel engineering, and relates to an automated anchor bolt construction equipment, and specifically to an intelligent construction device for anchor bolt support of a large-section tunnel in red layer soft rock. Background Art

[0002] With the increase in traffic demand and the advancement of engineering technology, the development of large-section tunnels is a significant trend in the field of tunnel engineering. In order to ensure the stability and safety of the tunnel structure, anchor rods are usually used to support the tunnel structure. Anchor rod support is made of metal parts, polymer parts or other materials, which are driven into pre-drilled holes in the rock mass to combine the surrounding rock with the stable rock mass to stabilize the overall rock mass structure.

[0003] In the Yunnan Central Dianchi Water Diversion Project, most of the strata through which the tunnel passes are soft rock strata of the "Dian Central Red Layer". The main characteristics of the soft rock of the Dian Central Red Layer are its high water content and low density, which makes it more drillable and plastic. In addition, this rock also has good permeability and compression strength, so it has been widely used in the fields of construction and engineering. However, due to the low strength of the surrounding rock, weak weathering resistance, poor stability, and easy deformation, it poses a great hidden danger to construction safety and restricts the construction progress. Summary of the invention

[0004] In order to solve the problem that traditional anchor construction relies heavily on manual labor and has low precision during construction, the present invention provides an intelligent construction device for anchor support in a large-section tunnel in a red layer soft rock. The present invention uses an intelligent construction device to construct support anchors in a large-section tunnel in a red layer soft rock, making the anchor support position more accurate than before. At the same time, by using an intelligent construction device during anchor construction, it is possible to achieve less reliance on manual labor and higher construction efficiency.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] An intelligent construction device for anchor support of a large-section red-layer soft rock tunnel comprises automated construction equipment and red-layer soft rock support anchors used in conjunction with the equipment, wherein:

[0007] The red layer soft rock support anchor is a drilling-anchoring-grouting-drainage integrated anchor, including an anchor top part, an anchor main part, an anchor end part, a drill bit, a grouting inlet, a grouting outlet, a grouting channel, a metal wire, a power supply, a drainage pipe, a water hole, a drainage hole, an embedded pad, and a grouting sleeve;

[0008] The top end of the anchor rod is separated from the main body of the anchor rod by a pre-buried pad, the main body of the anchor rod and the end end of the anchor rod are separated by sections of different sizes, and the end end of the anchor rod is connected to the drill bit and arranged at the upper end of the drill bit;

[0009] A grouting inlet and a drainage hole are provided on the cross section of the top end of the anchor rod;

[0010] A grouting outlet is provided at the variable cross-section between the end portion of the anchor rod and the main portion of the anchor rod;

[0011] A grout-stopping sleeve is installed at the rear end of the embedded pad;

[0012] The power supply is connected to the outer end of the embedded pad;

[0013] The outer shell of the end portion of the anchor rod is provided with a plurality of water holes, and the outside of the anchor rod at the water holes is wrapped with metal wires;

[0014] The anchor rod is provided with a grouting pipe and two drainage pipes which are connected front to back, and the drainage pipes are located on both sides of the grouting pipe and are slightly thinner than the grouting pipe. The grouting inlet is connected with the grouting outlet through the grouting channel, and the drainage hole is connected with the water hole through the drainage pipe.

[0015] The automated construction equipment includes an anchoring system, a position adjustment system, and a carrier system;

[0016] The anchoring system includes a fixed joint, a rotating head, a first motor box, a rotating support frame, a grouting joint, a grouting port, and a grouting pipe;

[0017] The position adjustment system includes a horizontal adjustment system and a vertical adjustment system. The horizontal adjustment system includes a front-rear adjustment plate, a left-right adjustment plate, a rotation adjustment plate, a first support plate, a first guide rail and a second guide rail. The vertical adjustment system includes a hydraulic lifting device, a second support plate, a first sleeve, a second sleeve, a third sleeve and a fourth sleeve.

[0018] The front end of the fixed joint is connected to the top of the red layer soft rock support anchor rod, and the rear end of the fixed joint is connected to the rotating head, which is controlled by the first motor box, and the first motor box is fixed to the front and rear adjustment plates through a rotating support frame;

[0019] The rotating head is provided with a grouting joint, and the grouting joint is connected with the rotating head and the fixed joint through bearing rotation;

[0020] The grouting port is arranged at the connection between the fixed joint and the grouting joint, and is arranged on the cross section of the fixed joint;

[0021] The grouting joint is connected to a grouting pipe, grouting is injected into the grouting joint through the grouting pipe, and grouting is injected into the fixed joint through the grouting port;

[0022] A rotating adjustment plate is provided at the lower end of the first support plate, a second guide rail is provided at the upper end of the first support plate, and the left-right adjustment plate moves left-right on the second guide rail; the left-right adjustment plate is provided with a first guide rail, and the front-rear adjustment plate moves front-rear on the first guide rail;

[0023] The lower end of the rotary adjustment plate is connected to a hydraulic lifting device, which is fixed on the second support plate, and a plurality of sleeves are arranged at the outer end, each sleeve is a truncated cone-shaped stacked structure, and a second support plate is arranged at the lower end of the bottom sleeve, and the second support plate is fixed on the upper end of the carrier system, and the hydraulic lifting device is connected to the top sleeve;

[0024] The carrier system is provided with a main motor box and a grouting tank inside, and the grouting tank is connected with a grouting joint through a grouting pipe.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. The red layer soft rock support anchor structure of the present invention is an integrated anchor for drilling, anchoring, grouting and drainage, which can effectively save costs and shorten construction period, ensure the stability of the overall structure, and better play a supporting role;

[0027] 2. The position adjustment system in the automated construction equipment of the present invention includes four direction adjustments: front and back, left and right, rotation, and vertical. Through the four direction adjustments, the anchor injection system can ensure relatively high position accuracy during drilling and grouting;

[0028] 3. The vehicle system in the automated construction equipment of the present invention adopts an automated control system and uses laser radar technology to control the precise position of the vehicle in the tunnel, thereby reducing dependence on manual labor, improving the intelligence of the overall construction, and shortening the construction period;

[0029] 4. The vertical adjustment system in the automated construction equipment of the present invention drives the first sleeve through a hydraulic lift, and then drives the remaining sleeves to complete the lifting. The arrangement of each sleeve effectively ensures the safety of the equipment, is not disturbed by the construction site, and prevents the entry of gravel and dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a side view of the anchor unit of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the grouting channel and drainage pipe of the anchor unit of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the grouting outlet of the anchor unit of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the automated construction equipment of the present invention;

[0034] Figure 5 It is a structural diagram of the anchoring system of the automated construction equipment;

[0035] Figure 6It is a structural schematic diagram of the level adjustment system of the automated construction equipment of the present invention;

[0036] Figure 7 It is a structural schematic diagram of the vertical adjustment system of the automated construction equipment of the present invention;

[0037] Figure 8 It is a structural schematic diagram of the grouting port of the automated construction equipment of the present invention;

[0038] In the figure: 101-drill bit; 102-grouting inlet; 103-grouting outlet; 104-grouting channel; 105-metal wire; 106-power supply; 107-drainage pipe; 108-water hole; 109-drainage hole; 111-embedded pad; 112-grouting sleeve; 31-fixed joint; 32-swivel; 33-first motor box; 34-rotating support frame; 35-grouting joint; 36-grouting port; 37-grouting pipe; 411-front and rear adjustment plate; 412-left and right adjustment plate; 413-rotating adjustment plate; 414-first support plate; 415-first guide rail; 416-second guide rail; 422-second support plate; 423-first sleeve; 424-second sleeve; 425-third sleeve; 426-fourth sleeve; 5-carrier system; 6-thread line. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described below in conjunction with the accompanying drawings, but is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be included in the protection scope of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of description and do not imply that the various parts in the device have a certain specific position or are constructed in a specific direction. Therefore, they should not be understood as any limitation on the present invention.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection, etc.

[0042] The present invention provides an intelligent construction device for anchor support of a large-section tunnel in red layer soft rock. Figures 1 to 8 As shown, the device includes red layer soft rock support anchor rods and automated construction equipment, wherein:

[0043] The red layer soft rock support anchor is an integrated anchor for drilling-anchoring-grouting-drainage, including an anchor top portion, an anchor main portion, an anchor end portion, a drill bit 101, a grouting inlet 102, a grouting outlet 103, a grouting channel 104, a metal wire 105, a power supply 106, a drainage pipe 107, a water hole 108, a drainage hole 109, an embedded pad 111, and a grouting sleeve 112.

[0044] The top part of the anchor rod is separated from the main part of the anchor rod by an embedded pad 111. A grouting sleeve 112 is installed at the rear end of the embedded pad 111. The grouting sleeve 112 is used to prevent the grouting from overflowing to the outside and causing waste. The main part of the anchor rod and the end part of the anchor rod are separated by sections of different sizes. The end part of the anchor rod is connected to the drill bit 101 and is arranged on the upper end of the drill bit 101. The drill bit 101 is used to drill the soft rock of the red layer of the tunnel. A grouting inlet 102 and a drainage hole 109 are arranged on the cross section of the top part of the anchor rod. A grouting outlet 103 is arranged at the variable cross section between the end part of the anchor rod and the main part of the anchor rod. A grouting channel 104 is arranged inside the anchor rod, which is connected to the front and back. The grouting channel 104 connects the grouting inlet 102 with the grouting outlet 103. After the drilling is completed, grouting is injected into the anchor rod through the grouting channel 104 at the grouting inlet 102.

[0045] Since the red layer soft rock strata have a high water content, in order to ensure the stability of the support structure, the anchor rod is provided with a metal wire 105, a power supply 106 and a drainage pipe 107. The drainage pipe 107 is arranged inside the anchor rod, and the drainage pipe 107 is located on both sides of the grouting pipe 104 and is slightly thinner than the grouting pipe 104. The power supply 106 is connected to the outer end of the embedded pad 111, and the current of the metal wire 105 is controlled by the power supply, so that the current has a greater effect on the surrounding rock mass, thereby achieving a drainage effect; a plurality of water holes 108 are provided on the outer shell of the end part of the anchor rod, and the metal wire 105 is wrapped on the outside of the anchor rod at the water hole 108, and the water in the surrounding rock is flowed into the anchor rod drainage pipe 107 from the water hole 108 through the electroosmosis effect, and the water is discharged from the drainage hole 109.

[0046] The automated construction equipment includes an anchoring system, a position adjustment system, and a carrier system 5. The anchoring system includes a fixed joint 31, a rotating head 32, a first motor box 33, a rotating support frame 34, a grouting joint 35, a grouting port 36, and a grouting pipe 37; the position adjustment system includes a horizontal adjustment system and a vertical adjustment system; the horizontal adjustment system can realize left and right adjustment, front and back adjustment, and rotation adjustment, including a front and back adjustment plate 411, a left and right adjustment plate 412, a rotation adjustment plate 413, a first support plate 414, a first guide rail 415, and a second guide rail 416; the vertical adjustment system includes a hydraulic lifting device, a second support plate 422, a first sleeve 423, a second sleeve 424, a third sleeve 425, a fourth sleeve 426, etc.

[0047] The interior of the fixed joint 31 and the top of the red layer soft rock support anchor are provided with mutually matching threads 6, which can match each other to make the structure more stable during drilling and play a fixing role during connection. The rear end of the fixed joint 31 is connected to a swivel 32, which is controlled by a first motor box 33. When drilling, the fixed joint 31 and the red layer soft rock support anchor are first fixed together through the threads 6, and the swivel 32 is controlled by the first motor box 33 to rotate the swivel 32 at high speed. Since the fixed joint 31 and the swivel 32 are also connected to each other, the swivel 32 drives the fixed joint 31 to rotate at high speed, thereby causing the anchor to rotate at high speed to achieve drilling. The two sides of the first motor box 33 are fixed to the front and rear adjustment plates 414 through a rotating support frame 34. The first motor box 33 can be driven to rotate by the rotating support frame 34, and the front end can be driven to rotate as a whole by the swivel 32 to ensure that the anchor system 3 can find a suitable angle for drilling.

[0048] The rotating head 32 is provided with a grouting joint 35, which is connected to the rotating head 32 and the fixed joint 31 through bearing rotation, so that when the rotating head 32 and the fixed joint 31 rotate at high speed, the grouting joint 35 and the rotating head 32 can be relatively still. The grouting port 36 is located on the cross section of the fixed joint 31, and the cross section is located at the connection between the fixed joint 31 and the grouting joint 35. The outer end of the grouting joint 35 is connected to a grouting pipe 37. When the drilling stage is completed, the grouting is injected into the grouting joint 35 through the grouting pipe 37 from the grouting tank provided in the bottom carrier system by pressure, and then flows into the fixed joint 31 from the grouting port 36, and then flows into the anchor from the anchor grouting inlet 12 to realize grouting.

[0049] During the drilling preparation stage, due to the limited positioning accuracy of the carrier positioning system, the drilling position accuracy needs to be improved. The left and right adjustment plates 412 are moved left and right on the second guide rail 416 to ensure the position accuracy of the anchor rod during drilling. The anchor injection system 3 is fixed on the left and right adjustment plates 412, and the anchor injection system 3 can be moved forward and backward by moving the left and right adjustment plates 412 forward and backward. During the drilling stage, the front and rear adjustment plates move forward and backward on the first guide rail 415 to ensure the drilling depth of the anchor rod. Blocks 417 are provided in front and behind the first guide rail 415 to prevent the front and rear adjustment plates from sliding out of the first guide rail 415. Each adjustment plate and each guide rail are located on the first support plate 414, and the rotation adjustment plate 413 is located at the lower end of the first support plate 414. The feasibility of each construction direction is ensured by the rotation adjustment of the rotation adjustment plate 413.

[0050] The lower end of the rotary adjustment plate 413 is connected to a first sleeve 423, the first sleeve is connected to a second sleeve 424, the second sleeve 424 is connected to a third sleeve 425, the third sleeve 425 is connected to a fourth sleeve 426, each sleeve is a coarse and fine truncated cone superimposed structure, when the first sleeve 423 rises, the first sleeve 423 can drive the second sleeve 424 to rise, and in turn drive the third sleeve 425 and the fourth sleeve 426 to rise. The first sleeve 423 is a truncated cone structure, except for the first sleeve 423, the second sleeve 424, the third sleeve 425, and the fourth sleeve 426 are all hollow truncated cone structures.

[0051] A second support plate 422 is provided at the lower end of the fourth sleeve 426, and a hydraulic lifting device is installed at the upper end of the second support plate 422, and the hydraulic lifting device is connected to the first sleeve 423. When the height of the equipment needs to be adjusted, the first sleeve 423 is driven by the hydraulic lifting device, and then the lifting of the first sleeve 423 drives the lifting of the second sleeve 424, and then drives the lifting of the third sleeve 425 and the fourth sleeve 426, so as to adjust the construction height of the automated construction equipment and facilitate the construction of anchors of various heights.

[0052] The second support plate 422 is arranged on the upper part of the carrier system 5. The carrier system 5 is automatically controlled by remote control and uses laser radar technology to control the relatively accurate position of the entire construction device in the large-section tunnel. The carrier system 5 is provided with a main motor box and a grouting tank inside. The main motor box provides power guarantee for the overall structure. The grouting tank stores grouting used for the anchor rod and is connected to the grouting joint 35 through a grouting pipe 37.

[0053] In the present invention, the method of using the above-mentioned intelligent construction device is as follows:

[0054] 1. Before using the intelligent construction device, first collect the internal data of the tunnel through tunnel laser scanning, calculate the precise location of each anchor hole through data processing, and enter the coordinates of each key point into the computer cloud.

[0055] 2. Control the vehicle system through a remote control device, and use laser radar technology to control the vehicle to move to the relatively precise position of the anchor drilling coordinates in a large-section tunnel.

[0056] 3. After the carrier system is moved, first determine the equipment height according to the anchor drilling coordinates, and use the hydraulic lifting device to drive the sleeve to adjust the height; after the height is adjusted, use the rotating adjustment plate to adjust to the most suitable angle for construction.

[0057] 4. If there is an angle requirement for anchor drilling, the upper anchor system can be controlled by rotating the support frame to adjust to the appropriate angle for drilling and grouting.

[0058] 5. Due to the limited accuracy of laser radar technology, the drilling position is adjusted by moving the left and right adjustment plates on the second guide rail to accurately move to the position to be drilled.

[0059] 6. After the position adjustment system is determined, the drilling phase begins. The front and rear adjustment plates move on the first guide rail to advance the anchor rod to drill the rock mass.

[0060] 7. After drilling, the grouting stored in the grouting tank is forced into the grouting joint through the grouting pipe and then into the anchor rod through the fixed joint.

[0061] 8. After the anchor rod is fixed, the motor is rotated in the reverse direction to release the connection between the fixing joint and the anchor rod.

Claims

1. An intelligent construction device for anchor support of large-section tunnel in red layer soft rock, characterized in that The device comprises automated construction equipment and red layer soft rock support anchor rods used in conjunction therewith, wherein: The red layer soft rock support anchor includes an anchor top part, an anchor body part, an anchor end part, a drill bit, a grouting inlet, a grouting outlet, a grouting channel, a metal wire, a power supply, a drainage pipe, a water hole, a drainage hole, an embedded pad, and a grouting sleeve; The top end of the anchor rod is separated from the main body of the anchor rod by a pre-buried pad, the main body of the anchor rod and the end end of the anchor rod are separated by sections of different sizes, and the end end of the anchor rod is connected to the drill bit and arranged at the upper end of the drill bit; A grouting inlet and a drainage hole are provided on the cross section of the top end of the anchor rod; A grouting outlet is provided at the variable cross-section between the end portion of the anchor rod and the main portion of the anchor rod; A grout-stopping sleeve is installed at the rear end of the embedded pad; The power supply is connected to the outer end of the embedded pad; The outer shell of the end portion of the anchor rod is provided with a plurality of water holes, and the outside of the anchor rod at the water holes is wrapped with metal wires; The anchor rod is provided with a grouting pipe and two drainage pipes connected front to back, and the drainage pipes are located on both sides of the grouting pipe, the grouting inlet is connected to the grouting outlet through the grouting channel, and the drainage hole is connected to the water hole through the drainage pipe; The automated construction equipment includes an anchoring system, a position adjustment system, and a carrier system; The anchoring system includes a fixed joint, a rotating head, a first motor box, a rotating support frame, a grouting joint, a grouting port, and a grouting pipe; The position adjustment system includes a horizontal adjustment system and a vertical adjustment system. The horizontal adjustment system includes a front-rear adjustment plate, a left-right adjustment plate, a rotation adjustment plate, a first support plate, a first guide rail and a second guide rail. The vertical adjustment system includes a hydraulic lifting device, a second support plate, a first sleeve, a second sleeve, a third sleeve and a fourth sleeve. The front end of the fixed joint is connected to the top of the red layer soft rock support anchor rod, and the rear end of the fixed joint is connected to the rotating head, which is controlled by the first motor box, and the first motor box is fixed to the front and rear adjustment plates through a rotating support frame; The rotating head is provided with a grouting joint, and the grouting joint is connected with the rotating head and the fixed joint through bearing rotation; The grouting port is arranged at the connection between the fixed joint and the grouting joint, and is arranged on the cross section of the fixed joint; The grouting joint is connected to a grouting pipe, grouting is injected into the grouting joint through the grouting pipe, and grouting is injected into the fixed joint through the grouting port; A rotating adjustment plate is provided at the lower end of the first support plate, a second guide rail is provided at the upper end of the first support plate, and the left-right adjustment plate moves left-right on the second guide rail; the left-right adjustment plate is provided with a first guide rail, and the front-rear adjustment plate moves front-rear on the first guide rail; The lower end of the rotary adjustment plate is connected to a hydraulic lifting device, which is fixed on the second support plate, and a plurality of sleeves are arranged at the outer end, each sleeve is a truncated cone-shaped stacked structure, and a second support plate is arranged at the lower end of the bottom sleeve, and the second support plate is fixed on the upper end of the carrier system, and the hydraulic lifting device is connected to the top sleeve; The carrier system is provided with a main motor box and a grouting tank inside, and the grouting tank is connected with a grouting joint through a grouting pipe.

2. The intelligent construction device for anchor support of large-section red-bed soft rock tunnel according to claim 1 is characterized in that The drainage pipe is slightly thinner than the grouting pipe.

3. The intelligent construction device for anchor support of large-section red-bed soft rock tunnel according to claim 1 is characterized in that The interior of the fixed joint and the exterior of the top end of the red layer soft rock support anchor rod are provided with mutually matching thread lines.

4. The intelligent construction device for anchor support of large-section red-bed soft rock tunnel according to claim 1 is characterized in that Blocks are arranged at the front and rear of the first guide rail to prevent the front and rear adjustment plates from sliding out of the first guide rail.

5. The intelligent construction device for anchor support of large-section red-bed soft rock tunnel according to claim 1 is characterized in that The lower end of the rotary adjustment plate is connected with a first sleeve, the first sleeve is externally connected with a second sleeve, the second sleeve is externally connected with a third sleeve, and the third sleeve is externally connected with a fourth sleeve.

6. The intelligent construction device for anchor support of large-section red-bed soft rock tunnel according to claim 5 is characterized in that The first sleeve is a truncated cone structure, and the second sleeve, the third sleeve, and the fourth sleeve are all hollow truncated cone structures.

Images