Roadway broken zone grouting support structure and use method

Abstract

The application discloses a kind of roadway broken zone grouting supporting structure and use method, specifically include: cartridge, the grouting device is movably installed in the top of cartridge, and grouting device is embedded and installed in the middle place of the inner cavity of cartridge, the supporting device is movably installed in the top of grouting device, the erecting device is movably installed in the inner wall of grouting device, one side of the inner cavity of grouting device is fixedly installed with electric control box, and the application relates to roadway broken technical field.The roadway broken zone grouting supporting structure and use method, by wellbore wheel is engaged and is slowly rotated, wellbore wheel and anchor rod between being equipped with the texture of adaptation, guide rod is influenced and moves upward by anchor rod, extrusion disc body runs, disc body linkage lattice beam jolts operation, to make soft formation extrusion compaction, so that internal grouting water plugging or gap part is forced to come out, the space formed is filled with slurry, to reach the function of replacement grouting.

Description

Technical Field

[0001] This invention relates to the field of roadway crushing technology, specifically to a roadway crushing zone grouting support structure and its application method. Background Technology

[0002] A tunnel is a passageway drilled between the surface and the ore body, used for ore transportation, ventilation, drainage, pedestrian access, and necessary preparatory works for new mining operations to facilitate the extraction of ore by metallurgical equipment. During the construction and production processes of underground mines, underground engineering projects will inevitably cross some faults. These faults are mostly fractured, muddy, and accompanied by water inflow. The existence of faults poses serious safety hazards to the normal construction of the mine, directly affecting the safety of underground personnel and equipment. It is particularly important to adopt reasonable and effective treatment methods for faults. Generally, the treatment of faults is based on the fracture of the surrounding rock and the water inflow situation of the tunnel, and adopts short excavation and short support or complete passage followed by overall support to ensure the safety of the project.

[0003] According to Chinese Patent CN202020107782.X, a roadway support structure through a muddy fracture zone includes a widened cross section, a long pipe shed, a steel arch frame, and reinforced concrete support. The widened cross section is a fractured fault set on the outer periphery of the designed cross section of the roadway. The long pipe shed consists of multiple parallel long steel pipes, which are driven into the widened cross section above the roadway along the length of the roadway. The length of the long pipe shed exceeds the length of the fractured fault. Multiple grouting holes are evenly distributed on the long steel pipes. The steel arch frame is located below the long pipe shed and consists of two parallel legs and a semi-circular arch. The two ends of the semi-circular arch are connected to the upper ends of the two legs. The plane of the steel arch frame is perpendicular to the length of the roadway. Multiple steel arch frames are placed parallel to each other along the length of the roadway. The upper end of the steel arch frame is tightly connected to the top surface of the widened cross section below the long pipe shed. The multiple steel arch frames are connected by welded steel bars. Reinforced concrete support is poured inside the steel arch frames.

[0004] In summary, the shortcomings of the existing technology are that although the combination of steel arch support and reinforced concrete support improves the support quality, during grouting, the grouting output end of the steel arch support is prone to seepage along the protruding or recessed fault parts of the ore body, which can lead to water blockage. This not only fails to guarantee the stability of the support but also wastes grouting materials, leaving room for improvement. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the technical solution adopted by this invention to solve its technical problems is as follows:

[0006] A grouting support structure for fractured roadways, specifically comprising:

[0007] The device includes a mounting base with a grouting device movably mounted on its top. This grouting device is used to adjust the compaction state of the grouting and water plugging process. The grouting device is embedded in the middle of the inner cavity of the mounting base. A support device is movably mounted on the top of the grouting device. This support device is used to adjust the stability of the ore body excavated in the tunnel. A support device is movably mounted on the inner wall of the grouting device. This support device is used to cooperate with the grouting device to complete the adjustment of the grouting state and the support of the ore body. An electrical control box is fixedly mounted on one side of the inner cavity of the grouting device.

[0008] The grouting device includes a reinforced concrete support. A locking device is fixedly installed in the inner cavity of the reinforced concrete support. A disc is movably installed in the middle of the locking device. An anchor rod is movably installed at the bottom of the disc. A well wheel is rotatably installed on the outer surface of the anchor rod. The well wheel runs upward along the outer surface of the anchor rod. The guide rod moves upward due to the influence of the anchor rod. A drive shaft is movably installed on the left side of the well wheel.

[0009] Furthermore, the wellbore wheel and the anchor rod have matching textures, and a guide rod supports the wellbore wheel and the anchor rod. The middle of the reinforced concrete support has reserved space corresponding to the anchor rod, the wellbore wheel, and the locking device. The wellbore wheel rotates slowly due to the meshing action. The wellbore wheel and the anchor rod have matching textures, and a guide rod supports the wellbore wheel and the anchor rod. The center lines of the anchor rod and the wellbore wheel are on the same straight line. The locking device has a groove inside and is a cuboid structure.

[0010] Furthermore, the support device includes a steel arch frame, with a locking rod fixedly installed at the bottom end of the steel arch frame. The locking rod is inserted into the groove at the top of the reinforced concrete support, aligning downwards. The locking rod moves synchronously with the collar cylinder, which presses down on the pressure rod. The collar cylinder is fixedly installed on the outer surface of the locking rod, and the pressure rod is movably installed at the bottom end of the collar cylinder. A pad is provided at the bottom end of the pressure rod, and iron pins are movably installed on the outer surface of the pressure rod. The iron pins are evenly distributed with reference to the center line of the collar cylinder, and the pressure rod passes through the inner cavity of the iron pins. The pressure rod is embedded in the pad. The collar cylinder has a circular ring shape and is connected to the iron pins through the pressure rod. The iron pins have an irregular shape.

[0011] Furthermore, the erection device includes a cable hoop. Grouting material gradually enters the straight pipe along the groove in the middle of the cable hoop. A branch pipe is located below the lock head, and the branch pipe collects and receives the tributaries. The inner wall of the cable hoop is threaded with a lock head, which penetrates the inside of the cable hoop and extends to the outside. An anchor mesh is fixedly installed on the top outer surface of the cable hoop. A straight pipe is fixedly installed in the inner cavity of the cable hoop. A branch pipe is fixedly installed near the center of the straight pipe. The lock heads are symmetrically arranged with reference to the center line of the cable hoop. The outer surface of the anchor mesh is provided with anti-detachment texture. A groove is provided in the middle of the bottom end of the cable hoop. The cable hoop as a whole has an arch bridge shape. The straight pipe and the branch pipe are identical, and the angle between the straight pipe and the branch pipe is set at ninety degrees. The cable hoop itself is made of stainless steel.

[0012] Furthermore, the positioning device also includes a lattice beam, a sliding member is movably installed in the inner cavity of the lattice beam, a steel frame is fixedly installed on the top of the sliding member, the steel frame moves outward by the sliding member pressing the locking rod, the lattice beam limits the sliding direction of the sliding member, and a locking rod is fixedly installed on the side of the sliding member away from the disc body, and the locking rod is located at the outer edge of the side of the sliding member. A pressure cylinder is fixedly installed at the joint in the middle of the lattice beam, and the pressure cylinder is located below the disc body.

[0013] A method for using grouting support in fractured tunnel sections includes the following steps:

[0014] Step 1: First, the tunnel and ore body structures are sealed and reinforced with soil and rock before excavation or before excavation reaches the aquifer. After excavation and lining, grouting is used to control water hazards and reinforce the strata.

[0015] Step 2: When ore body support is required, for deep ore bodies or open-pit ore bodies mined to a certain depth, underground mining methods are used to erect reinforced concrete supports on the side to the edge of the passage drilled between the surface and the ore body. Then, a steel arch frame is placed on it, and the locking rod is inserted into the top groove of the reinforced concrete support with the locking rod pointing downwards. The locking rod and the linkage sleeve move synchronously, and the sleeve presses down on the pressure rod. The bottom pad of the pressure rod is inserted first to the bottom of the groove of the reinforced concrete support and then stops. The sleeve continues to apply downward squeezing force, causing the pressure rod to bend. The bending of the pressure rod causes the iron pin to open. The iron pin changes from a closed state to an open state. The side wall support of the iron pin extends into the gap of the inner cavity of the reinforced concrete support, thus forming an automatic support function, which supports the pressure of the mine, prevents the mine from becoming wet due to rain or snow accumulation, and has a buffering internal stress, ensuring that it is not easy to collapse instantly due to excessive gravity. Moreover, the greater the pressure, the tighter the support becomes.

[0016] Step 3: When internal grouting is required, cement grouting material and chemical grouting material are injected into the reinforced concrete support through the groove on the side. The groove in the middle of the reinforced concrete support cavity has a through structure from top to bottom. The grouting material gradually fills the reinforced concrete support cavity, thereby ensuring the normal execution of the grouting process.

[0017] Step 4: When it is necessary to improve the stability of the support, the cable hoop is attached to the side wall of the reinforced concrete support, and the reinforced concrete support has a locking groove corresponding to the lock head. The lock head passes through the cable hoop and extends into the interior of the reinforced concrete support, and the lock head contacts the iron pin. The lock head impacts the iron pin, accelerating the expansion and opening force of the iron pin, making it more stable. At the same time, the anchor mesh is inserted into the bottom groove of the steel arch frame, and the side is combined with the cable hoop and the reinforced concrete support by the lock head to prevent misalignment from affecting the grouting treatment, improve the load-bearing capacity, and strengthen the stability of the mine support.

[0018] Step 5: During the grouting process, if the uneven parts of the reinforced concrete support cavity become blocked by water due to a fault, open the hidden box at the bottom inner wall of the reinforced concrete support. The hidden box contains an electrical control box, which drives a servo motor. The motor output on the electrical control box is connected to the drive shaft. The shaft wheel, anchor rod, and drive shaft are equipped with protective isolation covers to block the internal grouting material. When the drive shaft is energized, it rotates counterclockwise. There are matching teeth between the drive shaft and the shaft wheel. The shaft wheel rotates slowly due to the meshing action. There are matching textures between the shaft wheel and the anchor rod, and a guide rod supports the shaft wheel and the anchor rod. The shaft wheel runs upward along the outer surface of the anchor rod. The guide rod moves upward due to the influence of the anchor rod, which compresses the disc. The disc moves in conjunction with the grid beam to make the soft stratum compacted, thereby forcing out the internal grouting and water blockage or voids. The resulting space is filled with grout, thus achieving the function of replacement grouting.

[0019] Step 6: When it is necessary to perform locking treatment on both sides of the inner cavity, the guide rod moves upward synchronously under the fine adjustment of the anchor rod and inserts into the inner cavity of the pressure cylinder. The disc at the top of the pressure cylinder moves upward. When the disc bounces, it generates a vibration due to gravity. The disc is affected by the vibration force and moves in conjunction with the steel frame. The steel frame moves outward by squeezing the locking rod through the sliding parts. The lattice beam limits the sliding direction of the sliding parts. The locking rod is inserted into the reinforced concrete support of the inner cavity sidewall to ensure internal stability and form an automatic locking function.

[0020] Step 7: When there is too much grouting material solution, it leaks through the gap between the reinforced concrete support and the lock head. The grouting material gradually enters the straight pipe along the groove in the middle of the cable hoop. The branch pipe is located below the lock head. The branch pipe collects and receives the tributaries and finally flows into the branch pipe. A small amount flows out through the opening of the bottom card seat. After the grouting material solidifies, the cable hoop is erected, thereby ensuring the utilization rate and collection rate of the equipment grouting material and avoiding excessive waste.

[0021] This invention provides a grouting support structure and its application method for fractured tunnel sections. It has the following beneficial effects:

[0022] 1. The grouting support structure and its application method for the fractured zone of the roadway: before excavation or before excavation to the point of approaching the aquifer, the roadway ore body structure is used to block water and reinforce the soil and rock. After excavation and lining, grouting is used to control water hazards and reinforce the strata.

[0023] 2. The grouting support structure and usage method of this roadway fracture zone involves inserting a locking rod into the groove at the top of the reinforced concrete support by aligning it downwards. The locking rod and the linkage sleeve move synchronously, and the sleeve presses down on the pressure rod. The bottom pad of the pressure rod is inserted first and then stops at the bottom of the groove of the reinforced concrete support. The sleeve continues to apply downward squeezing force, causing the pressure rod to bend. The bending of the pressure rod causes the iron pin to open, changing the iron pin from a closed state to an open state. The sidewall support of the iron pin extends into the gap of the inner cavity of the reinforced concrete support, thus forming an automatic support function. This function supports the mine pressure and prevents the mine from becoming wet due to rain or snow accumulation, which increases its own weight. It has a buffering internal stress, ensuring that it is not easy to collapse instantly due to excessive gravity. Moreover, the support gradually tightens as the pressure increases.

[0024] 3. The grouting support structure and application method of the roadway fracture zone: the groove in the middle of the reinforced concrete support cavity is a through structure, and the grouting material gradually fills the reinforced concrete support cavity, thereby ensuring the normal execution of the grouting process.

[0025] 4. The grouting support structure and application method of this roadway fracture zone extends into the reinforced concrete support through the lock head penetrating the cable hoop. The lock head contacts the iron pin, and the impact of the lock head on the iron pin accelerates the expansion and opening force of the iron pin, making it more stable. At the same time, the anchor mesh is inserted into the bottom groove of the steel arch frame. The side is connected to the cable hoop and reinforced concrete support by the lock head to prevent misalignment from affecting the grouting treatment, improve the load-bearing capacity, and strengthen the stability of the mine support.

[0026] 5. The grouting support structure and its application method for the fractured zone of this roadway: the shaft wheel rotates slowly due to the meshing action. There is a matching texture between the shaft wheel and the anchor bolt, and a guide rod supports the shaft wheel and the anchor bolt. The shaft wheel runs upward along the outer surface of the anchor bolt, and the guide rod moves upward under the influence of the anchor bolt, squeezing the disc to run. The disc is linked to the grid beam to operate in a bumpy operation, so as to squeeze and compact the loose strata, thereby forcing out the internal grouting water plugging or voids, and filling the space formed by the grout, thereby achieving the function of replacement grouting.

[0027] 6. The grouting support structure and usage method of the roadway fracture zone: the plate at the top of the pressure cylinder moves upward. When the plate shakes, it is affected by gravity and generates vibration. The plate is affected by the vibration and the steel frame operates in conjunction with it. The steel frame moves outward by squeezing the locking rod through the sliding parts. The grid beam limits the sliding direction of the sliding parts. The locking rod is inserted into the side wall of the reinforced concrete support cavity to ensure internal stability and form an automatic locking function.

[0028] 7. The grouting support structure and usage method of the roadway fracture zone: the branch pipe is located below the lock head. The branch pipe collects and receives the tributaries and finally flows into the branch pipe. A small amount flows out through the bottom end card seat opening. After the grouting material solidifies, the cable clamps are erected, thereby ensuring the utilization rate and collection rate of the equipment grouting material and avoiding a lot of waste. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structural plan of the process of this invention;

[0030] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 3 This is a three-dimensional structural schematic diagram of the steel arch frame of the present invention;

[0032] Figure 4 This is a three-dimensional schematic diagram of the locking rod structure of the present invention;

[0033] Figure 5 This is a three-dimensional schematic diagram of the collar cylinder of the present invention;

[0034] Figure 6 This is a three-dimensional schematic diagram of the reinforced concrete support structure of the present invention;

[0035] Figure 7 This is a three-dimensional structural schematic diagram of the disk body of the present invention;

[0036] Figure 8 This is a three-dimensional schematic diagram of the pressure cylinder of the present invention;

[0037] Figure 9 For the present invention Figure 8 A partially enlarged schematic diagram of the steel frame structure at point B;

[0038] Figure 10 This is a three-dimensional schematic diagram of the straight-through pipe of the present invention;

[0039] Figure 11 For the present invention Figure 3 A three-dimensional schematic diagram of the lock at point F.

[0040] In the diagram: 1. Card seat; 2. Grouting device; 3. Support device; 4. Erection device; 5. Electrical control box; 21. Reinforced concrete support; 22. Positioning device; 23. Disc; 24. Anchor bolt; 25. Well shaft wheel; 26. Drive shaft; 221. Lattice beam; 222. Sliding component; 223. Locking shaft; 224. Steel frame; 225. Pressure cylinder; 31. Steel arch frame; 32. Locking rod; 33. Collar cylinder; 34. Pressure shaft rod; 35. Iron pin; 41. Cable clamp; 42. Lock head; 43. Anchor mesh component; 44. Straight pipe; 45. Branch pipe. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design modified embodiments suitable for a particular purpose.

[0042] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 , Figures 7-9 This invention provides a technical solution: a grouting support structure for fractured tunnels, specifically comprising:

[0043] The card seat 1 has a grouting device 2 movably installed on its top. The grouting device 2 is used to adjust the compaction state of the grouting and water plugging, and the grouting device 2 is embedded in the middle of the inner cavity of the card seat 1.

[0044] The grouting device 2 includes a reinforced concrete support 21. A locking device 22 is fixedly installed in the inner cavity of the reinforced concrete support 21. A disc 23 is movably installed in the middle of the locking device 22. An anchor rod 24 is movably installed at the bottom of the disc 23. A well roller 25 is rotatably installed on the outer surface of the anchor rod 24. The well roller 25 runs upward along the outer surface of the anchor rod 24. The guide rod moves upward due to the influence of the anchor rod 24. A drive shaft 26 is movably installed on the left side of the well roller 25.

[0045] The shaft wheel 25 and the anchor rod 24 have matching textures, and a guide rod is provided between the shaft wheel 25 and the anchor rod 24. The middle of the reinforced concrete support 21 has reserved space corresponding to the anchor rod 24, the shaft wheel 25 and the locking device 22. The shaft wheel 25 rotates slowly due to the meshing action. The shaft wheel 25 and the anchor rod 24 have matching textures, and a guide rod is provided between the shaft wheel 25 and the anchor rod 24. The center lines of the anchor rod 24 and the shaft wheel 25 are on the same straight line. The locking device 22 has a groove inside and is a cuboid structure.

[0046] The positioning device 22 also includes a lattice beam 221. A sliding member 222 is movably installed in the inner cavity of the lattice beam 221. A steel frame 224 is fixedly installed on the top of the sliding member 222. The steel frame 224 moves outward by pressing the locking shaft 223 through the sliding member 222. The lattice beam 221 limits the sliding direction of the sliding member 222. The locking shaft 223 is fixedly installed on the side of the sliding member 222 away from the disc body 23. The locking shaft 223 is located at the outer edge of the side of the sliding member 222. A pressure cylinder 225 is fixedly installed at the joint in the middle of the lattice beam 221. The pressure cylinder 225 is located below the disc body 23.

[0047] A method for using grouting support in fractured tunnel sections includes the following steps:

[0048] First, the tunnel and ore body structures are sealed and reinforced with soil and rock before excavation or before excavation reaches the aquifer. After excavation and lining, grouting is used to control water hazards and reinforce the strata.

[0049] When internal grouting is required, cement grouting material and chemical grouting material are injected into the reinforced concrete support 21 through the groove on the side. The groove in the middle of the inner cavity of the reinforced concrete support 21 has a through structure from top to bottom. The grouting material gradually fills the inner cavity of the reinforced concrete support 21, thereby ensuring the normal execution of the grouting process.

[0050] During grouting operations, if the uneven parts of the reinforced concrete support 21 become blocked by a fault, the concealed box at the bottom inner wall of the reinforced concrete support 21 is opened. Inside the box is an electrical control box 5, which drives a servo motor. The motor output of the control box 5 is connected to the drive shaft 26. The shaft wheel 25, anchor bolt 24, and drive shaft 26 are equipped with protective isolation covers to block the internal grouting material. When the drive shaft 26 is energized, it rotates counterclockwise. A matching device is installed between the drive shaft 26 and the shaft wheel 25. The wellbore wheel 25 rotates slowly due to the meshing action. There is a matching texture between the wellbore wheel 25 and the anchor rod 24, and a guide rod is supported between the wellbore wheel 25 and the anchor rod 24. The wellbore wheel 25 runs upward along the outer surface of the anchor rod 24. The guide rod moves upward due to the influence of the anchor rod 24, and the extrusion disc 23 runs. The disc 23 is linked with the grid beam 221 to operate in a bumpy manner, so as to compress and compact the loose strata, thereby forcing out the internal grouting and water plugging or voids. The space formed is filled with grout, thereby achieving the function of replacement grouting.

[0051] When it is necessary to perform locking on both sides of the inner cavity, the guide rod moves upward synchronously under the fine adjustment of the anchor rod 24 and inserts into the inner cavity of the pressure cylinder 225. The top plate 23 of the pressure cylinder 225 moves upward. When the plate 23 bounces, it generates vibration due to gravity. The plate 23 is affected by the vibration and moves the steel frame 224. The steel frame 224 moves outward by pressing the locking shaft 223 through the sliding member 222. The lattice beam 221 limits the sliding direction of the sliding member 222. It is inserted into the inner cavity side wall of the reinforced concrete support 21 through the locking shaft 223 to ensure the stability of the interior and form an automatic locking function.

[0052] Example 2: Please refer to Figures 1-6 The present invention provides a technical solution: a support device 3 is movably installed on the top of the grouting device 2, which is used to adjust the stability of the ore body excavated in the roadway.

[0053] The support device 3 includes a steel arch frame 31. A locking rod 32 is fixedly installed at the bottom of the steel arch frame 31. The locking rod 32 is inserted into the top groove of the reinforced concrete support 21 with the locking rod facing downward. The locking rod 32 moves synchronously with the collar cylinder 33. The collar cylinder 33 presses down on the pressure rod 34. The collar cylinder 33 is fixedly installed on the outer surface of the locking rod 32. The pressure rod 34 is movably installed at the bottom of the collar cylinder 33. A pad is provided at the bottom of the pressure rod 34. Iron pins 35 are movably installed on the outer surface of the pressure rod 34. The iron pins 35 and the center line of the collar cylinder 33 are evenly distributed with reference. The pressure rod 34 is set through the inner cavity of the iron pin 35. The pressure rod 34 is embedded in the inside of the pad. The collar cylinder 33 is designed with a circular ring shape. The collar cylinder 33 is connected to the iron pins 35 through the pressure rod 34. The iron pins 35 are set with an irregular shape.

[0054] A method for using grouting support in fractured tunnel sections includes the following steps:

[0055] First, the tunnel and ore body structures are sealed and reinforced with soil and rock before excavation or before excavation reaches the aquifer. After excavation and lining, grouting is used to control water hazards and reinforce the strata.

[0056] When internal grouting is required, cement grouting material and chemical grouting material are injected into the reinforced concrete support 21 through the groove on the side. The groove in the middle of the inner cavity of the reinforced concrete support 21 has a through structure from top to bottom. The grouting material gradually fills the inner cavity of the reinforced concrete support 21, thereby ensuring the normal execution of the grouting process.

[0057] When ore body support is required, for deeply buried or open-pit ore bodies mined to a certain depth, underground mining methods are used. The reinforced concrete support 21 is erected laterally to the edge of the passage drilled between the surface and the ore body. A steel arch frame 31 is then placed on top of it. The locking rod 32 is inserted into the groove at the top of the reinforced concrete support 21 with the locking rod facing downwards. The locking rod 32 moves synchronously with the collar cylinder 33, which presses down on the pressure rod 34. The bottom pad of the pressure rod 34 is inserted first to the bottom of the groove in the reinforced concrete support 21 and then stops. The collar cylinder 33 continues to apply downward compressive force, causing the pressure rod 34 to bend. The bending of the pressure rod 34 causes the iron pin 35 to open, changing the iron pin 35 from a closed state to an open state. The side wall support of the iron pin 35 extends into the gap of the inner cavity of the reinforced concrete support 21, thereby forming an automatic support function, which supports the mine pressure, prevents the mine from becoming wet due to rain or snow accumulation, and has a buffering internal stress, ensuring that it is not easy to collapse instantly due to excessive gravity. Moreover, the greater the pressure, the tighter the support gradually becomes.

[0058] Example 3: Please refer to Figures 1-11 The present invention provides a technical solution: based on the first embodiment, a support device 4 is movably installed on the inner wall of the grouting device 2. The support device 4 is used to cooperate with the grouting device 2 to complete the adjustment of the grouting state and the support of the ore body. An electrical control box 5 is fixedly installed on one side of the inner cavity of the grouting device 2.

[0059] The erection device 4 includes a cable hoop 41. Grouting material gradually enters the straight pipe 44 along the groove in the middle of the cable hoop 41. The branch pipe 45 is located below the lock head 42. The branch pipe 45 collects and receives the tributaries. The lock head 42 is threadedly connected to the inner wall of the cable hoop 41 and extends through the inside of the cable hoop 41 to the outside. An anchor mesh 43 is fixedly installed on the top outer surface of the cable hoop 41. The straight pipe 44 is fixedly installed in the inner cavity of the cable hoop 41. The branch pipe 45 is fixedly installed near the center of the straight pipe 44. The lock head 42 is symmetrically arranged with reference to the center line of the cable hoop 41. The outer surface of the anchor mesh 43 is provided with anti-fall-off texture. The bottom of the cable hoop 41 has a groove in the middle. The cable hoop 41 has an arch bridge shape structure. The straight pipe 44 and the branch pipe 45 are the same, and the angle between the straight pipe 44 and the branch pipe 45 is set at ninety degrees. The cable hoop 41 itself is made of stainless steel.

[0060] A method for using grouting support in fractured tunnel sections includes the following steps:

[0061] First, the tunnel and ore body structures are sealed and reinforced with soil and rock before excavation or before excavation reaches the aquifer. After excavation and lining, grouting is used to control water hazards and reinforce the strata.

[0062] When internal grouting is required, cement grouting material and chemical grouting material are injected into the reinforced concrete support 21 through the groove on the side. The groove in the middle of the inner cavity of the reinforced concrete support 21 has a through structure from top to bottom. The grouting material gradually fills the inner cavity of the reinforced concrete support 21, thereby ensuring the normal execution of the grouting process.

[0063] When it is necessary to improve the stability of the support, the cable hoop 41 is attached to the side wall of the reinforced concrete support 21, and the reinforced concrete support 21 is provided with a locking groove corresponding to the lock head 42. The lock head 42 passes through the cable hoop 41 and extends into the interior of the reinforced concrete support 21. The lock head 42 contacts the iron pin 35. The lock head 42 impacts the iron pin 35, accelerating the expansion and opening force of the iron pin 35, making it more stable. At the same time, the anchor mesh 43 is inserted into the bottom groove of the steel arch frame 31. The side is connected to the cable hoop 41 and the reinforced concrete support 21 as one unit through the lock head 42, preventing misalignment from affecting the grouting treatment, improving the load-bearing capacity, and strengthening the stability of the mine support.

[0064] When there is too much grouting material solution, it leaks through the gap between the reinforced concrete support 21 and the lock head 42. The grouting material gradually enters the straight pipe 44 along the groove in the middle of the cable clamp 41. The branch pipe 45 is located below the lock head 42. The branch pipe 45 collects and receives the tributaries and finally flows into the branch pipe 45. A small amount flows out through the opening of the bottom clamp 1. After the grouting material solidifies, the cable clamp 41 is erected, thereby ensuring the utilization rate and collection rate of the equipment grouting material and avoiding a lot of waste.

[0065] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A grouting support structure for fractured roadways, specifically comprising: A mounting base (1) is provided, on the top of which a grouting device (2) is movably installed. The grouting device (2) is used to adjust the compaction state of the grouting and water plugging. The grouting device (2) is embedded in the middle of the inner cavity of the mounting base (1). A support device (3) is movably installed on the top of the grouting device (2). The support device (3) is used to adjust the stability of the ore body excavated in the roadway. A support device (4) is movably installed on the inner wall of the grouting device (2). The support device (4) is used to cooperate with the grouting device (2) to complete the adjustment of the grouting state and the support of the ore body. An electrical control box (5) is fixedly installed on one side of the inner cavity of the grouting device (2). The feature is that: The grouting device (2) includes a reinforced concrete support (21), a locking device (22) is fixedly installed in the inner cavity of the reinforced concrete support (21), a disc (23) is movably installed in the middle of the locking device (22), an anchor rod (24) is movably installed at the bottom of the disc (23), a well shaft wheel (25) is rotatably installed on the outer surface of the anchor rod (24), and a drive shaft (26) is movably installed on the left side of the well shaft wheel (25). The wellbore wheel (25) and the anchor rod (24) are provided with matching textures, and a guide rod is supported between the wellbore wheel (25) and the anchor rod (24). The reinforced concrete support (21) has a space reserved in the middle corresponding to the anchor rod (24), the wellbore wheel (25) and the positioning device (22). The center lines of the anchor bolt (24) and the wellbore wheel (25) are on the same straight line.

2. The grouting support structure for a fractured tunnel according to claim 1, characterized in that: The positioning device (22) has a slot inside, and the positioning device (22) is a cuboid shape structure.

3. The grouting support structure for a fractured tunnel according to claim 1, characterized in that: The support device (3) includes a steel arch frame (31), a locking rod (32) is fixedly installed at the bottom of the steel arch frame (31), a collar cylinder (33) is fixedly installed on the outer surface of the locking rod (32), a pressure rod (34) is movably installed at the bottom of the collar cylinder (33), and a pad is provided at the bottom of the pressure rod (34), and an iron pin (35) is movably installed on the outer surface of the pressure rod (34).

4. The grouting support structure for a fractured tunnel according to claim 3, characterized in that: The iron pins (35) are evenly distributed with reference to the center line of the collar cylinder (33), and the pressure rod (34) is installed through the inner cavity of the iron pins (35), and the pressure rod (34) is embedded in the inside of the pad layer.

5. The grouting support structure for a fractured tunnel according to claim 4, characterized in that: The collar cylinder (33) is designed with a circular ring shape. The collar cylinder (33) is connected to the iron pin (35) through the pressure rod (34). The iron pin (35) is an irregular shape.

6. The grouting support structure for a fractured tunnel according to claim 3, characterized in that: The erection device (4) includes a cable hoop (41), a lock head (42) is threadedly connected to the inner wall of the cable hoop (41), and the lock head (42) extends through the inside of the cable hoop (41) to the outside. An anchor mesh component (43) is fixedly installed on the top outer surface of the cable hoop (41). A straight pipe (44) is fixedly installed in the inner cavity of the cable hoop (41). A branch pipe (45) is fixedly installed near the center of the cable hoop (41) in the straight pipe (44).

7. A grouting support structure for a fractured tunnel according to claim 6, characterized in that: The lock head (42) is symmetrically arranged with reference to the center line of the cable hoop (41), the anchor mesh (43) has anti-fall-off texture on its outer surface, and the cable hoop (41) has a groove in the middle of its bottom end.

8. A grouting support structure for a fractured tunnel according to claim 6, characterized in that: The cable clamp (41) is an arch bridge-shaped structure. The straight pipe (44) and the branch pipe (45) are connected, and the included angle between the straight pipe (44) and the branch pipe (45) is set at ninety degrees. The cable clamp (41) itself is made of stainless steel.

9. A grouting support structure for a fractured tunnel according to claim 6, characterized in that: The positioning device (22) also includes a lattice beam (221), a slide (222) is movably installed in the inner cavity of the lattice beam (221), a steel frame (224) is fixedly installed on the top of the slide (222), the steel frame (224) moves outward by squeezing the locking shaft (223) through the slide (222), the lattice beam (221) limits the sliding direction of the slide (222), and a locking shaft (223) is fixedly installed on the side of the slide (222) away from the disc (23), and the locking shaft (223) is located at the outer edge of the side of the slide (222), and a pressure cylinder (225) is fixedly installed at the joint in the middle of the lattice beam (221), and the pressure cylinder (225) is located below the disc (23).

10. A method for using grouting support in fractured tunnel sections, characterized in that, The method of using the grouting support structure for the fractured zone of the roadway as described in claim 9 includes the following steps: Step 1: First, the tunnel and ore body structures are sealed and reinforced with soil and rock before excavation or before excavation reaches the aquifer. After excavation and lining, grouting is used to control water hazards and reinforce the strata. Step 2: When ore body support is required, for deep ore bodies or open-pit ore bodies mined to a certain depth, the reinforced concrete support (21) is erected on its side to the edge of the passage between the surface and the ore body using underground mining methods. Then, the steel arch frame (31) is placed on it, and the locking rod (32) is inserted into the top slot of the reinforced concrete support (21) with the locking rod (32) facing downward. The locking rod (32) moves synchronously with the collar cylinder (33), and the collar cylinder (33) presses down on the pressure rod (34). The bottom pad of the pressure rod (34) is inserted first to the bottom of the slot of the reinforced concrete support (21). After the part stops, the collar cylinder (33) still applies downward squeezing force, the pressure rod (34) bends, the pressure rod (34) bends and causes the iron pin (35) to open, the iron pin (35) changes from the initial closed state to the open state, the side wall support of the iron pin (35) extends into the gap of the inner cavity of the reinforced concrete support (21), thus forming an automatic support function, which plays a role in supporting the mine pressure, preventing the mine from becoming wet due to rain or snow accumulation and increasing its own weight, and has buffering internal stress, ensuring that it is not easy to collapse instantly due to excessive gravity, and the greater the pressure, the tighter the support gradually becomes; Step 3: When grouting is required inside, cement grouting material and chemical grouting material are injected into the groove on the side of the reinforced concrete support (21). The groove in the middle of the inner cavity of the reinforced concrete support (21) is a through structure. The grouting material gradually fills the inner cavity of the reinforced concrete support (21), thereby ensuring the normal execution of the grouting process. Step 4: When it is necessary to improve the stability of the support, the cable hoop (41) is attached to the side wall of the reinforced concrete support (21), and the reinforced concrete support (21) is provided with a locking groove corresponding to the lock head (42). The lock head (42) passes through the cable hoop (41) and extends into the interior of the reinforced concrete support (21). The lock head (42) contacts the iron pin (35). The lock head (42) impacts the iron pin (35), accelerating the expansion and opening force of the iron pin (35) and making it more stable. At the same time, the anchor mesh (43) is inserted into the bottom groove of the steel arch frame (31). The side is connected to the cable hoop (41) and the reinforced concrete support (21) by the lock head (42) to prevent misalignment from affecting the grouting treatment, improve the load-bearing capacity, and strengthen the stability of the mine support. Step 5: When the grouting process is in operation, if the uneven part of the inner cavity of the reinforced concrete support (21) is blocked by the fault, the hidden box at the bottom inner wall of the reinforced concrete support (21) is opened. The hidden box is equipped with an electrical control box (5). The electrical control box (5) drives the servo motor. The motor output end on the electrical control box (5) is connected to the drive shaft (26). The shaft wheel (25), the anchor rod (24), and the drive shaft (26) are equipped with protective isolation covers on the outside by default to block the internal grouting material. The drive shaft (26) is energized and rotates counterclockwise. A phase is set between the drive shaft (26) and the shaft wheel (25). With matching teeth, the wellbore wheel (25) rotates slowly due to meshing. There is a matching texture between the wellbore wheel (25) and the anchor rod (24), and a guide rod is supported between the wellbore wheel (25) and the anchor rod (24). The wellbore wheel (25) runs upward along the outer surface of the anchor rod (24), and the guide rod moves upward due to the influence of the anchor rod (24). The extrusion disc (23) runs, and the disc (23) moves in conjunction with the lattice beam (221) to make the soft stratum compacted, so that the internal grouting and water plugging or the void part is forced out, and the space formed is filled with grout, thereby achieving the function of replacement grouting. Step 6: When it is necessary to perform locking treatment on both sides of the inner cavity, the guide rod moves upward synchronously under the fine adjustment of the anchor rod (24) and inserts into the inner cavity of the pressure cylinder (225). The top plate (23) of the pressure cylinder (225) moves upward. When the plate (23) is bumped, it is affected by gravity and generates vibration. The plate (23) is affected by the vibration force and the steel frame (224) operates in conjunction. The steel frame (224) presses the locking shaft (223) outward through the sliding part (222). The lattice beam (221) limits the sliding direction of the sliding part (222) and inserts it into the inner wall of the reinforced concrete support (21) through the locking shaft (223) to ensure the stability of the interior and form an automatic locking function. Step 7: When there is too much grouting material solution, it leaks through the gap between the reinforced concrete support (21) and the lock head (42). The grouting material gradually enters the straight pipe (44) along the groove in the middle of the cable hoop (41). The branch pipe (45) is located below the lock head (42). The branch pipe (45) collects and receives the tributaries and finally flows into the branch pipe (45). A small amount flows out through the opening of the bottom card seat (1). After the grouting material solidifies, the cable hoop (41) is erected, thereby ensuring the utilization rate and collection rate of the equipment grouting material and avoiding a lot of waste.

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