CN218150999U - Hollow grouting mine anchor cable device capable of reinforcing deep surrounding rock - Google Patents
Hollow grouting mine anchor cable device capable of reinforcing deep surrounding rock Download PDFInfo
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- CN218150999U CN218150999U CN202222141827.7U CN202222141827U CN218150999U CN 218150999 U CN218150999 U CN 218150999U CN 202222141827 U CN202222141827 U CN 202222141827U CN 218150999 U CN218150999 U CN 218150999U
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- 239000011435 rock Substances 0.000 title claims abstract description 43
- 230000003014 reinforcing effect Effects 0.000 title abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 85
- 239000010959 steel Substances 0.000 claims abstract description 85
- 239000011440 grout Substances 0.000 claims abstract description 28
- 238000005065 mining Methods 0.000 claims abstract description 7
- 238000007569 slipcasting Methods 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002547 anomalous effect Effects 0.000 abstract description 4
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- 230000002787 reinforcement Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 18
- 238000004873 anchoring Methods 0.000 description 17
- 239000004568 cement Substances 0.000 description 14
- 239000002002 slurry Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
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- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model particularly relates to a can consolidate mining anchor rope device of cavity slip casting of deep country rock has solved the unable problem of consolidating deep country rock in tunnel, arranging anomalous tunnel advance support difficult realization of current tunnel support mode. A hollow grouting mine anchor cable device capable of reinforcing deep surrounding rock comprises a hollow steel strand, wherein a grouting pipe penetrates through the inner cavity of the hollow steel strand; the left end part of the hollow steel strand is provided with a joint pipe; the left part of the hollow steel strand is sleeved with an anchor rope anchorage, an arched tray, a grout stopping plug push pipe and a grout stopping plug which are sequentially arranged from left to right; the right part of the side wall of the grouting pipe is provided with a grouting hole; the right end part of the hollow steel strand is sleeved with a fastening sleeve. The utility model realizes the integral reinforcement of the deep part of the surrounding rock stratum, can replace the traditional advance support technology, and effectively improves the safety factor of the tunnel operation; has the advantages of convenience, time saving and good plugging effect.
Description
Technical Field
The utility model relates to a mine support technical field specifically is a can consolidate mining anchor rope device of cavity slip casting of deep country rock.
Background
With the development of coal mining technology and the increase of mining depth, the section of a roadway is larger and larger, and the old supporting method and materials cannot meet new requirements. The maintenance of the intact service section of the roadway is the key to mine production and technical development. The roadway support mode is advance support, and the advance support generally uses roadway supports and single pillars.
However, practice shows that the existing roadway supporting mode has the following problems: firstly, along with the aggravation of separation of deep rock layers of the tunnel, the existing tunnel supporting mode cannot effectively reinforce deep surrounding rocks, so that the danger coefficient of underground operation is increased; secondly, when the roadway with irregular arrangement is supported in advance by the roadway supports, the roadway supports are not easy to retract in the stubble combining process of the working face; when the single support is used for advance support, the roadway is basically between 4.3m and 4.6m in width and between 3.4m and 4.6m in height, so that the number of the single supports is large, and the labor intensity of workers is high. Based on the above, the anchor cable device for the hollow grouting mine, which can reinforce the deep surrounding rock, is needed to be invented, the deep surrounding rock can be reinforced, and the traditional advanced support mode is replaced, so that the problems that the deep surrounding rock of the roadway cannot be reinforced, and the advanced support of the irregularly arranged roadway is difficult to realize are solved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the unable deep country rock in tunnel of consolidating of current tunnel support mode, arrange the difficult problem that realizes of anomalous tunnel advance support, provide a can consolidate the mining anchor rope device of cavity slip casting of deep country rock.
The utility model discloses an adopt following technical scheme to realize:
a kind of anchor cable device for mining of hollow grouting that can strengthen the deep surrounding rock, including the hollow steel strand wires formed by several steel wires twine, the cavity of the hollow steel strand wires is worn and equipped with the grouting pipe; the left end part of the hollow steel strand is fixedly connected with a joint pipe with a hexagonal prism-shaped right outer side wall, and the joint pipe is communicated with the grouting pipe; the left part of the hollow steel strand is sleeved with an anchor rope anchorage, an arched tray, a grout stopping plug push pipe and a grout stopping plug which are sequentially arranged from left to right, and the opening of the arched tray faces right; the right part of the side wall of the grouting pipe is provided with a plurality of pairs of grouting holes distributed left and right, and each pair of grouting holes are oppositely arranged; the right end part of the hollow steel strand is sleeved with a fastening sleeve positioned on the left side of the plug.
Furthermore, a support rod which is fixed on the outer side wall of the grouting pipe and is placed along the radial direction of the grouting pipe is arranged on the right side of each grouting hole, the support rod is clamped between the two steel wires, and the end part of the support rod extends to the outer side of the hollow steel strand; two arc-shaped grooves which are correspondingly clamped with the two steel wires are formed in the side face of the supporting rod.
Furthermore, the right side of the fastening sleeve is provided with a plug for plugging the right end part of the grouting pipe, the right surface of the plug is provided with three convex edge strips which are distributed at equal intervals in the circumferential direction and are radially placed, and the fastening sleeve, the plug and the convex edge strips are of an integral structure made of steel.
Furthermore, the grout stopping plug consists of a straight cylinder part and two annular blocking parts which are arranged at two ends of the straight cylinder part and sleeved on the hollow steel stranded wire, wherein the straight cylinder part and the annular blocking parts are both made of rubber; the two annular blocking parts are conical blocking parts, and the outer diameters of the opposite parts of the conical blocking parts are smaller than the outer diameter of the back parts of the conical blocking parts.
Furthermore, the hollow steel strand is a spiral rib prestressed steel strand, and the number of steel wires is eight.
Further, the slip casting pipe is made of a steel corrugated pipe.
Further, the left part of the joint pipe is a hollow quick joint which is communicated with the grouting pipe and has the model KJ 10.
The utility model has reasonable and reliable structural design, realizes the integral reinforcement of the deep part of the surrounding rock stratum, can replace the traditional advanced support technology, and effectively improves the safety factor of the tunnel operation; the anchor cable device is of a hollow structure, is provided with a grouting pipe, can perform reverse grouting, eliminates air pockets generated during grouting, and ensures that cement grout can fill the drilled holes and surrounding rock cracks around the hollow steel strand; meanwhile, the anchor cable device adopts a mode of inner anchor and outer injection, the inner end adopts resin for anchoring, the middle part adopts grouting, and the outer end adopts an anchor cable anchorage device for locking, so that the anchor injection combination is realized; furthermore, the plugging device has the advantages of convenience, time saving and good plugging effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line C-C of FIG. 1;
fig. 5 is a schematic structural view of the middle joint pipe of the present invention;
fig. 6 is a schematic diagram of the arrangement in the roadway of the present invention.
In the figure, 1-steel wire, 2-hollow steel strand, 3-grouting pipe, 4-joint pipe, 5-anchor cable anchorage, 6-arched tray, 7-grout stop plug push pipe, 8-grout stop plug, 9-grouting hole, 10-plug, 11-fastening sleeve, 12-stay bar, 13-arc groove and 14-convex rib.
Detailed Description
A hollow grouting mine anchor cable device capable of reinforcing deep surrounding rock is shown in attached figures 1-5; the steel wire rope comprises a hollow steel strand 2 formed by winding a plurality of steel wires 1, wherein a grouting pipe 3 penetrates through the inner cavity of the hollow steel strand 2; the left end part of the hollow steel strand 2 is fixedly connected with a joint pipe 4 of which the right outer side wall is in a hexagonal prism shape, and the joint pipe 4 is communicated with the grouting pipe 3; the left part of the hollow steel strand 2 is sleeved with an anchor rope anchorage device 5, an arched tray 6, a grout stopping plug push pipe 7 and a grout stopping plug 8 which are sequentially arranged from left to right, and the opening of the arched tray 6 faces the right; a plurality of pairs of grouting holes 9 distributed left and right are formed in the right part of the side wall of the grouting pipe 3, and each pair of grouting holes 9 are arranged oppositely; the right end part of the hollow steel strand 2 is sleeved with a fastening sleeve 11 positioned on the left side of the plug 10.
The utility model discloses a go deep into inside the surrounding rock layer with cavity steel strand wires 2, slip casting pipe 3 to utilize the grouting pump to inject the cement thick liquid to the surrounding rock deep, make the cement thick liquid flow into the crack of surrounding rock deep through injected hole 9, cavity steel strand wires 2, after the cement thick liquid solidifies, just can carry out the whole reinforcement to the surrounding rock deep, effectively improved the factor of safety of tunnel operation, applicable in arranging anomalous tunnel, in order to replace traditional advance support; the grout stop plug 8 can plug the drilled hole in the grouting process, so that reverse leakage of cement grout from the drilled hole is prevented, and the sealing effect is improved; the structural design of the fastening sleeve 11 can prevent the steel wire 1 from loosening; the arched tray 6 applies a certain torque to the anchor rope anchorage device 5 through a tensioning machine, so that the arched tray 6 is tightly pressed on the surface of the roadway, a pretightening force is provided for the hollow steel strand 2, and the pretightening force is diffused into a coal rock body around the hollow steel strand 2, so that the stress state of the surrounding rock is improved, the surrounding rock separation layer, the structural surface sliding and the joint crack opening are inhibited, and conditions are provided for the next grouting; the grout stop plug 8 can be supported from the outside of the surrounding rock layer under the matching of the grout stop plug push pipe 7, so that the grout stop plug 8 is prevented from being punched out under the action of high pressure; in addition, the arched tray 6 can assist in fixing the positions of the hollow steel strand 2 and the grouting pipe 3, so that the hollow steel strand 2 and the grouting pipe 3 are positioned in the center of a drilled hole, and grouting accuracy is improved; the joint pipe 4 can fasten the left end of the hollow steel strand 2 to prevent loosening; secondly, the cable can be arranged on the anchor cable stirrer through the right outer side wall of the hexagonal prism, so that the stirring operation during resin anchoring is facilitated; and thirdly, the quick connector can be connected with a grouting pump, so that the processes of pipeline binding and air exhaust on site are omitted.
The hollow steel strand 2 in the utility model is a hollow steel strand twisted by a grouting pipe 3 made of metal and eight steel wires 1. During manufacturing, the joint pipe 4 and the hollow steel strand 2 can be fixedly connected in a sleeving manner or in a welding manner.
The operation process is realized by adopting the following four steps:
s1: drilling: firstly, determining the position of a drill hole and the depth of the drill hole according to the thickness of the surrounding rock stratum, and selecting the anchor cable device with proper length to ensure that the length of the anchor cable device capable of penetrating into the stable surrounding rock stratum is not less than 1m; then, drilling by adopting a drilling machine matched with a drill rod and a drill bit; the drilling machine adopts an anchor rod drilling machine or a light special anchor cable drilling machine, the drill rod adopts a drill rod with the model B19 or B22, and the drill bit adopts a double-wing drill bit with the diameter of 32 mm; during drilling, the drilling machine is required to be kept from moving so as to prevent the axial lines of the drill holes from being not on the same straight line, which brings difficulty to the installation of the anchor cable device, and the process of the anchor cable device is similar to that of anchor rod drilling;
s2: anchoring: after drilling is finished, sequentially feeding an ultrafast or quick resin anchoring agent and a medium-speed resin anchoring agent into a drill hole, then lightly feeding the resin anchoring agent into the bottom of the drill hole by using the anchor cable device, then connecting the anchor cable device with a drilling machine by using an anchor cable stirrer (at the moment, the anchor cable device does not contain a grout stop plug 8, a grout stop plug push pipe 7, an arched tray 6 and an anchor cable anchorage device 5), and then starting the drilling machine to stir and push for 20-30 s while stirring so that the anchor cable device reaches the bottom of the drill hole; then stopping the drilling machine, and after waiting for 1-2 min, dismounting the anchor rope stirrer, thereby completing the anchoring of the right end part of the anchor rope device;
s3: tensioning and sealing holes: according to the characteristics of a resin anchoring agent, after curing for 1-8 minutes, sequentially installing a grout stop plug 8, a grout stop plug push pipe 7, an arch tray 6 and an anchor cable anchorage device 5 on a hollow steel strand 2, enabling the grout stop plug 8 to be located at a drilling hole opening, enabling an opening of the arch tray 6 to face a surrounding rock, then connecting the anchor cable device with a tensioning jack (in addition, a through tensioning jack can be used), starting an oil pump for first tensioning (hole sealing) until the grout stop plug 8 is tightly attached to the drilling hole opening, the arch tray 6 is attached to the surface of the surrounding rock, an anchor ring of the anchor cable anchorage device 5 is tightly clamped with a clamping piece, stopping the oil pump, and checking whether plugging of a drilling hole is tight; then, opening an oil pump for secondary tensioning, simultaneously observing the reading of a pressure gauge in the oil pump, stopping the oil pump when the pressure value reaches a set value, and dismounting a tensioning jack, thereby completing plugging and tensioning of the anchor cable device;
s4: grouting: firstly, reliably connecting a connecting pipe of a grouting pump with a joint pipe 4 (a pressure relief valve and a stop valve are arranged on the grouting pump); then opening a stop valve, starting a grouting pump, slowly feeding cement slurry into a grouting pipe 3, allowing the cement slurry to flow into a gap in the deep part of the surrounding rock through a grouting hole 9 and the hollow steel strand 2, observing grouting pressure in the grouting process, stopping the grouting pump when the pressure value reaches a preset pressure value, and closing the stop valve; and then opening the pressure relief valve to relieve pressure, sequentially unloading the grouting pump and the connecting pipe after pressure relief is finished, and plugging the joint pipe 4 by using the plug I, thereby finishing the grouting process of the anchor cable device. In the grouting process, when local slurry leakage and leakage are found, the grouting pump is stopped in time, the slurry leakage position and the slurry leakage position are blocked by cotton yarns and the like, and the grouting pump is started after the blockage is finished until the grouting pressure reaches a preset value; and meanwhile, the slurry-eating amount of the anchor cable device is observed, and if the slurry-eating amount is small, the slurry quality and the grouting quality are influenced, the tee-joint flow dividing device is used for dividing the slurry. In the step, the cement slurry can be replaced by chemical slurry so as to realize the full-length anchoring of the anchor cable device and the reinforcement of surrounding rocks.
The utility model overcomes current roadway support mode can't consolidate the deep country rock in tunnel, arrange the difficult problem that realizes of anomalous tunnel advance support. The right part of the anchor cable device is used for stirring the anchoring agent for end anchoring, prestress is applied through the left part, the anchor cable device is very favorable and necessary for a top plate rock stratum with poor self-stability performance, the grouting hole is formed in the right part, a certain distance is reserved between the grouting hole and the anchoring end, the anchor cable in a certain range is completely grouted at one time, the diameter of a cable body is minimized on the premise that grouting is smooth, the small diameter and the large tonnage are realized, and the anchor cable device meets the requirement of high-pressure grouting.
As shown in figures 1 and 3; a support rod 12 which is fixed on the outer side wall of the grouting pipe 3 and is arranged along the radial direction of the grouting pipe 3 is arranged on the right side of each grouting hole 9, the support rod 12 is clamped between the two steel wires 1, and the end part of the support rod 12 extends to the outer side of the hollow steel strand 2; two arc grooves 13 which are correspondingly clamped with the two steel wires 1 are formed on the side surface of the support rod 12.
The structural design of the stay bar 12 can prop the two steel wires 1 apart to form a slurry outlet gap, so that cement slurry can be conveniently diffused into a drill hole and surrounding rock cracks around the hollow steel strand 2, and meanwhile, a yielding effect can be provided for the anchor cable device, and the anchoring effect is improved; the stay bar 12 is arranged to be waist-drum-shaped through the arc-shaped groove 13, the stay bar 12 is connected with the two steel wires 1 more firmly under the action of the arc-shaped groove 13, the steel wires 1 are prevented from sliding on the side surface of the stay bar 12 under the action of grouting pressure, and the structural reliability of the anchor cable device is improved.
As shown in figures 1 and 4; the right side of the fastening sleeve 11 is provided with a plug 10 for plugging the right end part of the grouting pipe 3, the right surface of the plug 10 is provided with three convex ribs 14 which are distributed circumferentially at equal intervals and are radially placed, and the fastening sleeve 11, the plug 10 and the convex ribs 14 are of an integral structure made of steel.
The plug 10 can plug the right end pipe orifice of the grouting pipe 3 to prevent cement slurry from leaking; protruding rib 14 uses anchor clamps to press from both sides end cap 10 into the tristimulus form and form after the mounting of adapter sleeve 11, and protruding rib 14 can promote the stirring effect at the anchor stage, has improved the stirring degree of consistency, and then has promoted the anchor strength of this anchor rope device.
As shown in figure 1; the grout stopping plug 8 consists of a straight cylinder part and two annular blocking parts which are arranged at two ends of the straight cylinder part and sleeved on the hollow steel stranded wire 2, and the straight cylinder part and the annular blocking parts are both made of rubber; the two annular clamping plug parts are conical clamping plug parts, and the outer diameters of the opposite parts of the conical clamping plug parts are smaller than that of the back parts of the conical clamping plug parts.
Under the action of the outward pressure of cement slurry and the inward thrust of the grout stop plug push pipe 7, the grout stop plug 8 is extruded to deform, the cross section area is increased while the deformation is carried out, and the effect of blocking a drilled hole is further improved.
The hollow steel strand 2 is a spiral rib prestressed steel strand, and the number of the steel wires 1 is eight.
The spiral rib prestressed steel strand has the advantages of high strength, good plasticity, low relaxation value, good straightening property, strong bond force with an anchoring agent and the like, and the hollow steel strand 2 made of the spiral rib prestressed steel strand improves the anchoring strength and the elongation of the anchor rope; wherein the anchoring strength is improved by about 15 percent compared with the common plain steel stranded wire with the same diameter, and the elongation of the anchor cable is improved by 10 to 15 percent compared with the plain steel stranded wire.
The slip pipe 3 is made of a steel corrugated pipe.
The steel corrugated pipe and the hollow steel stranded wire have the advantage of being bendable and can be wound into a cylindrical shape to enter a roadway during construction, so that the anchoring depth of the anchor cable device is not influenced by the space of the roadway, and the deep part of surrounding rock is further reinforced. And S1, drilling by adopting a splicing type drill bit during drilling, so that the assembly in the roadway is facilitated.
The left part of the joint pipe 4 is a hollow quick joint which is communicated with the grouting pipe 3 and has the model of KJ 10.
The hollow quick connector with the type KJ10 can be connected with a straight-through connector with the type KJ2-10 which is visible everywhere in a coal mine, so that the anchor cable device and the grouting pump are time-saving and convenient to connect.
In a specific implementation process, the grouting pipe 3 is a steel corrugated pipe; the anchor cable anchorage device comprises an anchor ring sleeved on the hollow steel strand 2, and three clamping pieces with internal threads are clamped between the anchor ring and the hollow steel strand 2; the anchor cable anchorage device 5 is a mine anchor cable anchorage device which is manufactured by a Hozhou coal and electricity group Huo Yuantong New Industrial investment Limited company and has the model number of KM22-1860, and can be tensioned by a through jack; in the tensioning process, the distance between the anchor cable anchorage device 5 and the surrounding rock stratum is 100mm when the anchor cable anchorage device is initially installed; the cement grout is prepared from common Portland cement with the model of 42.5MPa according to the water cement ratio of 1:1.5, 8-10% of cement grouting additive is added, and the grouting pressure is generally controlled to be about 4 MPa. The assembly of the steel wire 1 and the grouting pipe 3 can be realized by an anchor cable numerical control molding device, and a fastening sleeve 11 is installed after the assembly to prevent the cable body from loosening.
As shown in fig. 2, fig. 3 and fig. 4; the outer diameter of the grouting pipe 3 is D 1 Inner diameter of d 1 And D is 1 =10mm、d 1 =8mm; the diameter of the steel wire 1 is D 2 And D is 2 =6mm; hollow steel strandThe outside diameter of the wire 2 is D 3 And D is 3 =22 ± 0.1mm; the maximum radial size of the hollow steel strand 2 after being expanded by the support rods 12 is L, and L =26 +/-1 mm; the diameter of the plug 10 is D 4 And D is 4 =25±1mm。
In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a can consolidate mining anchor rope device of cavity slip casting of deep country rock which characterized in that: the steel wire rope comprises a hollow steel strand (2) formed by winding a plurality of steel wires (1), wherein a grouting pipe (3) penetrates through the inner cavity of the hollow steel strand (2); the left end part of the hollow steel strand (2) is fixedly connected with a joint pipe (4) with a hexagonal prism-shaped right outer side wall, and the joint pipe (4) is communicated with the grouting pipe (3); an anchor rope anchorage device (5), an arched tray (6), a grout stopping plug push pipe (7) and a grout stopping plug (8) which are sequentially arranged from left to right are sleeved at the left part of the hollow steel strand (2), and the opening of the arched tray (6) faces right; a plurality of pairs of grouting holes (9) distributed left and right are formed in the right part of the side wall of the grouting pipe (3), and each pair of grouting holes (9) are arranged oppositely; the right end part of the hollow steel strand (2) is sleeved with a fastening sleeve (11);
a support rod (12) which is fixed on the outer side wall of the grouting pipe (3) and is placed along the radial direction of the grouting pipe (3) is arranged on the right side of each grouting hole (9), the support rod (12) is clamped between the two steel wires (1), and the end part of the support rod (12) extends to the outer side of the hollow steel strand (2); two arc-shaped grooves (13) which are correspondingly clamped with the two steel wires (1) are formed in the side surface of the support rod (12).
2. The anchor cable device for the hollow grouting mine, which can reinforce deep surrounding rock, according to claim 1, is characterized in that: the right side of the fastening sleeve (11) is provided with a plug (10) for plugging the right end part of the grouting pipe (3), the right surface of the plug (10) is provided with three convex rib strips (14) which are distributed circumferentially at equal intervals and are radially placed, and the fastening sleeve (11), the plug (10) and the convex rib strips (14) are of an integral structure made of steel.
3. The anchor cable device for the hollow grouting mine, which can reinforce deep surrounding rock, according to claim 1, is characterized in that: the grout stopping plug (8) consists of a straight cylinder part and two annular blocking parts which are arranged at two ends of the straight cylinder part and sleeved on the hollow steel stranded wire (2), and the straight cylinder part and the annular blocking parts are both made of rubber; the two annular clamping plug parts are conical clamping plug parts, and the outer diameters of the opposite parts of the conical clamping plug parts are smaller than that of the back parts of the conical clamping plug parts.
4. The anchor cable device for the hollow grouting mine, which can reinforce deep surrounding rock, according to claim 1, is characterized in that: the hollow steel strand (2) is a spiral rib prestressed steel strand, and the number of the steel wires (1) is eight.
5. The anchor cable device for the hollow grouting mine, which can reinforce deep surrounding rock, according to claim 1, is characterized in that: the grouting pipe (3) is made of a steel corrugated pipe.
6. The anchor cable device for the hollow grouting mine, which can reinforce deep surrounding rock, according to claim 1, is characterized in that: the left part of the joint pipe (4) is a hollow quick joint which is communicated with the grouting pipe (3) and has the model of KJ 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222141827.7U CN218150999U (en) | 2022-08-15 | 2022-08-15 | Hollow grouting mine anchor cable device capable of reinforcing deep surrounding rock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222141827.7U CN218150999U (en) | 2022-08-15 | 2022-08-15 | Hollow grouting mine anchor cable device capable of reinforcing deep surrounding rock |
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| CN218150999U true CN218150999U (en) | 2022-12-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119777978A (en) * | 2025-01-20 | 2025-04-08 | 太原理工大学 | Fixed-point pressure-yielding support anchor cable and fixed-point pressure-yielding support method for tunnel |
| CN120845089A (en) * | 2025-09-22 | 2025-10-28 | 徐州工程学院 | Bionic shear-resistant reinforced hollow grouting anchor cable capable of being rolled for storage and transportation and its use method |
-
2022
- 2022-08-15 CN CN202222141827.7U patent/CN218150999U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119777978A (en) * | 2025-01-20 | 2025-04-08 | 太原理工大学 | Fixed-point pressure-yielding support anchor cable and fixed-point pressure-yielding support method for tunnel |
| CN120845089A (en) * | 2025-09-22 | 2025-10-28 | 徐州工程学院 | Bionic shear-resistant reinforced hollow grouting anchor cable capable of being rolled for storage and transportation and its use method |
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