CN111322099A - Anchoring force reinforcing anchor rod with umbrella rib type anchoring device - Google Patents
Anchoring force reinforcing anchor rod with umbrella rib type anchoring device Download PDFInfo
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- CN111322099A CN111322099A CN202010306556.9A CN202010306556A CN111322099A CN 111322099 A CN111322099 A CN 111322099A CN 202010306556 A CN202010306556 A CN 202010306556A CN 111322099 A CN111322099 A CN 111322099A
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- 238000004873 anchoring Methods 0.000 title claims abstract description 44
- 230000003014 reinforcing effect Effects 0.000 title claims description 5
- 239000011435 rock Substances 0.000 claims description 32
- 238000010276 construction Methods 0.000 claims description 11
- 230000002708 enhancing effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an anchoring force enhanced anchor rod with an umbrella rib type anchor, which has the technical scheme that 3-5 anchors (1) are uniformly fixed on a rod body (4) through threads, the length of the rod body (4) is L1, the distance L2 between the top end of the 1 st anchor (1) and the head of the rod body (4) is (0.14-0.20) L1, the distance L3 between each anchor (1) and (0.15-0.25) L1. the tail end of the rod body (4) is provided with a tray (2), the tray (2) is connected with the rod body (4) through a fixing nut (3), the anchors (1) are an integral body formed by hexagonal nuts (5) and 6 anchor feet (6), the 6 hexagonal anchor feet (6) are positioned on the same plane of the hexagonal nuts (5), the bottoms of the 6 anchor feet (6) are connected to form a hexagon, the centers of the 6 anchor feet are symmetrically inclined outwards, the parallelopiped anchor feet (6) are parallelepipedic, the front surface of the anchor feet is a parallelogram, and the mounting reliability of the anchor feet α is high, and the mounting difficulty of the parallelogram α' is equal.
Description
Technical Field
The invention belongs to the technical field of anchor rods. In particular to an anchoring force reinforced anchor rod with an umbrella rib type anchor.
Background
In the field of geotechnical engineering, anchor rod support is widely applied to projects such as foundation pits, side slopes, mine tunnels and the like due to the obvious technical and economic advantages of the anchor rod support. There are two common anchor rods in the engineering at present: mechanical expanding shell type anchor rods and tube seam type anchor rods.
The mechanical expanding shell type anchor rod is an end anchoring type anchor rod, and provides anchoring force through the embedding force between the expanding shell and the hole wall. However, when the quality of surrounding rock is poor or rocks near the anchoring point are locally deformed or broken, the anchor rod is easy to slip, the anchoring effect is ineffective, and further engineering disasters are generated.
The pipe seam type anchor rod is a full-length anchoring type anchor rod, when the full-length anchoring type anchor rod is installed in a drill hole with a diameter smaller than the pipe diameter, radial pressure can be applied to the hole wall in the full-length range, friction force for preventing surrounding rocks from sliding downwards is applied, and bearing force of a tray is added, so that the surrounding rocks are in a three-dimensional stress state, and rock stratum stability is achieved. But the initial anchoring force is low, the requirement on the hole diameter of the drilled hole is strict, the hole diameter is slightly large, and the anchoring force is low; the aperture is slightly small, and the installation is difficult. The length of the device is limited (generally, the device is difficult to install when the device exceeds 1500 mm), and the application range is limited greatly. In addition, the high-elasticity alloy steel used is expensive.
Accordingly, those skilled in the art are continually exploring and developing new bolt technologies.
The anti-deformation pawl type soil layer anchor rod (CN 205530246U) is characterized in that a through hole is formed in the anchor rod, and a steel wire pawl penetrates through the through hole, so that the binding force of the anchor rod and a soil layer is improved; and a round nut prevents the pawl from deforming. However, the integrity of the anchor rod is damaged by the arrangement mode of the pawl, the anti-pulling capacity of the anchor rod is reduced, the construction requirement of the anchor rod on the arrangement of the through hole and the grouting hole is high, and large-scale production is difficult to obtain in a short time. In addition, the pawl has limited rigidity and strength and can only play a certain role in soil layer support, and most of surrounding rocks needing to be supported in roadway construction are harder rocks, so that the anchor rod is obviously not applicable any more.
"a combination barb formula stock" (CN 110387882A) and "a flexible self-anchored prestressed anchor rod with anti-claw" (CN 209510357U), adopt barb and anti-claw's structure in order to strengthen the anchorage power, but have the following shortcoming: the structure has high construction requirements and low economic applicability; the structure can not provide larger anchoring force, and is easy to break when the rock stratum has larger displacement; there is the potential safety hazard in hook formula and claw formula, easily causes the workman to be injured in the work progress.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and aims to provide an anchoring force enhanced anchor rod of an umbrella rib type anchor with low installation difficulty, strong anchoring force and high reliability.
In order to achieve the purpose, the invention adopts the technical scheme that:
the anchoring force reinforcing anchor rod with the umbrella rib type anchor device is composed of K anchor devices, 1 tray, 1 fixing nut and 1 rod body. The rod body is a threaded rod piece, and the length and the thread major diameter of the threaded rod piece are sequentially represented by letters L1 and D; k anchor pass through the screw thread and fix on the body of rod uniformly, and the tail end of the body of rod 4 is provided with tray 2, and tray 2 is connected with the body of rod 4 through fixation nut 3.
K anchors begin the serial number from the body of rod head, and the serial number is 1 st, 2 nd, … …, kth in proper order, and K is 3 ~ 5 natural number.
The distance L2 between the top end of the 1 st anchor and the head of the rod body is (0.14-0.20) L1;
the distance L3 between each anchor is (0.15-0.25) L1.
The anchors are in umbrella rib type, each anchor is an integral body composed of 1 hexagonal nut and 6 anchor feet, the 6 anchor feet are located on the same plane of the hexagonal nut, the bottoms of the 6 anchor feet are connected to form a hexagon, the bottom edge of each anchor foot is parallel to the corresponding edge of the hexagonal nut, the 6 anchor feet are centrosymmetrically inclined outwards, and the outward inclination angle α' of each anchor foot is 30-60 degrees.
The major diameter of the thread of the hexagonal nut is the same as the major diameter D of the thread of the rod body, the radius R of the circumscribed circle of the hexagonal nut is (1-1.2) D, and the thickness a3 of the hexagonal nut is (0.35-0.55) R.
The anchor foot is an oblique parallelepiped, the geometric shape of the oblique parallelepiped is that the front face is rectangular, the width a1 of the rectangle is (0.65-0.85) R, the length a2 of the rectangle is (1.25-1.55) a1, the side face is a parallelogram, the length b of the bottom edge of the parallelogram is (0.35-0.55) a2, and the included angle α of the parallelogram is equal to the outward inclination angle α' of the anchor foot.
The use method of the anchoring force enhanced anchor rod of the umbrella-type anchor with the umbrella ribs comprises the following steps:
(1) according to the surrounding rock conditions and construction requirements, the number K of the anchors is determined, and the K anchors are installed to the positions corresponding to the rod bodies.
(2) The head of the rod body with the anchor is driven into a rock mass at the bottom of the anchor hole, and then the rod body is pulled outwards until the anchor foot is embedded into the rock wall around the anchor hole.
(3) And (3) inserting a grouting pipe into the gap of the anchor foot, grouting, after the slurry is solidified and the anchor rod is stable, arranging a tray and a fixing nut at the tail part of the rod body, and fixing the tray at the orifice of the anchor hole by the fixing nut.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the invention, 3-5 anchors are uniformly arranged on the rod body of the anchor rod, the anchoring force is provided through the embedding force of anchor feet on the anchors and surrounding rocks, the required anchoring force is borne on the whole length of the rod body, and compared with a pipe seam type anchor rod, the anchor rod is easier to install and has larger initial anchoring force; and because the anchor foot on the anchor has higher intensity, the resistance that the anchor foot provided for rock stratum behind the embedding rock stratum of anchor foot, it is bigger more firm for the anchoring force of mechanical expanding shell formula stock, it is higher for hook type and claw formula structural strength, can provide better support for the rock for the life of the body of rod of stock is longer.
According to the invention, 3-5 anchors are connected to the rod body through threads, so that the structure is simple; the tray and the fixing nut used during installation are standard parts, so that the processing difficulty and the production cost are effectively reduced, the method is suitable for industrial production, and the economic effect of construction enterprises can be obviously improved.
According to the invention, the anchors are in threaded connection with the rod body, so that the length of the rod body and the number of the anchors can be changed in time according to surrounding rock conditions and actual conditions, the length of the rod body is 2000-2500 mm, the flexibility is high, and the anchoring force can guarantee actual requirements on site; meanwhile, the anchor, the tray, the fixing nut and the rod body are separately packaged when leaving the factory, so that the anchor, the tray, the fixing nut and the rod body are convenient to transport, store and install, and the applicability is strong.
Therefore, the invention has the advantages of low installation difficulty, strong anchoring force and high reliability.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of an anchor 1 of FIG. 1;
FIG. 3 is a schematic right-side view of FIG. 2;
figure 4 is a perspective view of the anchor foot 6 of figure 2 or figure 3.
Detailed Description
The invention is further described with reference to the following figures and detailed description, without limiting its scope.
As shown in fig. 1, the anchoring force enhancing anchor rod of the umbrella-type anchor according to the present embodiment is composed of K anchors 1, 1 tray 2, 1 fixing nut 3, and 1 rod body 4. The rod body 4 is a threaded rod piece, and the length and the thread major diameter of the threaded rod piece are sequentially represented by letters L1 and D; k anchor 1 is fixed on the body of rod 4 through the screw thread uniformly, and the tail end of the body of rod 4 is provided with tray 2, and tray 2 is connected with the body of rod 4 through fixation nut 3.
The distance L2 between the top end of the 1 st anchor 1 and the head of the rod body 4 is (0.14-0.20) L1;
the distance L3 between each anchor 1 is (0.15 to 0.25) L1.
As shown in fig. 1 to 3, the anchors 1 are rib type, each anchor 1 is an integral body composed of 1 hexagon nut 5 and 6 anchor feet 6, the 6 anchor feet 6 are located on the same plane of the hexagon nut 5, the bottoms of the 6 anchor feet 6 are connected to form a hexagon, the bottom edge of each anchor foot 6 is parallel to the corresponding edge of the hexagon nut 5, the 6 anchor feet 6 are centrosymmetrically inclined outwards, and the outwards inclined angle α' of each anchor foot 6 is 30-60 degrees.
The major diameter of the thread of the hexagon nut 5 is the same as the major diameter D of the thread of the rod body 4, the radius R of the circumscribed circle of the hexagon nut 5 is (1-1.2) D, and the thickness a3 of the hexagon nut 5 is (0.35-0.55) R.
As shown in fig. 4, the anchor foot 6 is an oblique parallelepiped, and the geometric shape of the oblique parallelepiped is that the front face (the face of the anchor foot 6 facing the reader in fig. 3) is a rectangle, the width a1 of the rectangle is (0.65-0.85) R, the length a2 of the rectangle is (1.25-1.55) a1, the side face is a parallelogram, the length b of the bottom side of the parallelogram is (0.35-0.55) a2, and the included angle α of the parallelogram is equal to the outward inclination angle α' of the anchor foot 6.
Example 1
The anchoring force reinforcing anchor rod with the umbrella rib type anchor device is used in a mine roadway, the roadway surrounding rock is stable, the section shape is semicircular arch, the loosening ring range is 1500mm, the clear width of the section is 4300mm, the clear height of the roadway is 2150mm, the anchor rod adopts a three-flower arrangement mode according to the surrounding rock condition and construction requirements, and the row spacing is 800 × 800 mm.
The anchoring force enhancing anchor bar structure of the umbrella-type anchor is as described in the specific embodiment. Wherein:
the length L1 of the rod body 4 is 2100mm, and the major diameter D of the thread of the rod body 4 is 20 mm.
The number K of anchors 1 is 3.
The distance L2 between the top end of the 1 st anchor 1 and the head of the rod body 4 is 0.2L1 is 0.2 × 2100 is 420 mm;
the spacing L3 of each anchor 1 is 0.25L1 is 0.25 × 2100 is 525 mm;
the outward inclination angle α' of each anchor foot 6 is 60 °;
the circumscribed circle radius R of the hexagon nut 5 is 1.2D, 1.2 × 20, 24 mm;
the thickness a3 of the hexagon nut 5 is 0.55D, 0.55 × 20 is 11 mm.
Anchor foot 6 is oblique parallelepiped, oblique parallelepiped's geometric dimension:
the width a1 of the rectangle is 0.85R 0.85 × 24mm 20.4 mm;
the length a2 of the rectangle is 1.55a1 is 1.55 × 20.4.4 is 31.6 mm;
the length b of the bottom edge of the parallelogram is 0.55a 2-0.55 × 31.6.6-17.4 mm;
the parallelogram angle α - α -60 °.
The use method of the anchoring force enhancing anchor rod of the umbrella-type anchor provided by the embodiment comprises the following steps:
(1) according to the surrounding rock condition and construction needs, confirm anchor 1's quantity K3, install 3 anchor 1 to the position department that the body of rod 4 corresponds.
(2) The head of the rod body 4 with the anchor 1 is driven into a rock mass at the bottom of the anchor hole, and then the rod body 4 is pulled outwards until the anchor foot 6 is embedded into a rock wall around the anchor hole.
(3) And (3) inserting a grouting pipe into the gap of the anchor foot 6, grouting, after the slurry is solidified and the anchor rod is stable, arranging the tray 2 and the fixing nut 3 at the tail part of the rod body 4, and fixing the tray 2 at the orifice of the anchor hole by the fixing nut 3.
Example 2
The anchoring force enhanced anchor rod with the umbrella-type anchor is used for lowering a track of a certain mining area, the lowering is located in a sand shale and medium sandstone interbedded layer, the compressive strength of surrounding rocks is low, a roadway is subjected to long-term rheology, large deformation and difficult maintenance, the shape of the section of the roadway is in a semicircular arch shape, the clear width of the section is 4300mm, the clear height of the roadway is 2150mm, the anchor rod is arranged in a pentagon shape according to the condition of the surrounding rocks and construction requirements, and the row spacing is 800 × 800 mm.
The anchoring force enhancing anchor bar structure of the umbrella-type anchor is as described in the specific embodiment. Wherein:
the length L1 of the rod body 4 is 2400mm, and the major diameter D of the thread of the rod body 4 is 22 mm.
The number K of anchors 1 is 4.
The distance L2 between the top end of the 1 st anchor 1 and the head of the rod 4 is 0.18L1 is 0.18 × 2400 is 432 mm;
the spacing L3 of each anchor 1 is 0.20L1 is 0.20 × 2400 is 480 mm;
the outward inclination angle α' of each anchor foot 6 is 45 °;
the circumscribed circle radius R of the hexagon nut 5 is 1.1D and 1.1 × 22 is 24.2 mm;
the thickness a3 of the hexagon nut 5 is 0.5D, 0.5 × 22 is 11 mm.
the width a1 of the rectangle is 0.75R 0.75 × 24.2.2 mm 18.2 mm;
the length a 2-1.45 a 1-1.45 × 18.2.2-26.4 mm of the rectangle;
the length b of the bottom edge of the parallelogram is 0.45a 2-0.45 × 26.4.4-11.9 mm;
the included angle α of the parallelogram is α' 45 °.
The method of using the anchoring force enhancing anchor of the rib type anchor of this embodiment is the same as that of embodiment 1.
Example 3
The anchoring force enhanced anchor rod with the umbrella-rib type anchor is used in a return airway of a certain coal mine, the top plate of the return airway is fine sandstone, the bottom plate of the return airway is gray black siltstone, the anchor rod is of a block structure and has a sliding surface, the section shape is semicircular arch, the clear width of the section is 4400mm, the clear height of the tunnel is 3400mm, the anchor rod adopts a three-flower arrangement mode according to surrounding rock conditions and construction requirements, and the spacing is 800 × 800 mm.
The anchoring force enhancing anchor bar structure of the umbrella-type anchor is as described in the specific embodiment. Wherein:
the length L1 of the rod body 4 is 2000mm, and the major diameter D of the thread of the rod body 4 is 20 mm.
The number K of anchors 1 is 5.
The distance L2 between the top end of the 1 st anchor 1 and the head of the rod body 4 is 0.14L1 is 0.14 × 2000 is 280 mm;
the spacing L3-0.15L 1-0.15L 0.15 × 2000-300 mm for each anchor 1;
the outward inclination angle α' of each anchor foot 6 is 30 °;
the circumscribed circle radius R of the hexagon nut 5 is 1.0D and 1.0 × 20 is 20 mm;
the thickness a3 of the hexagon nut 5 is 0.35D, 0.35 × 20 is 7 mm.
the width a1 of the rectangle is 0.65R 0.65 × 20mm 13 mm;
the length a2 of the rectangle is 1.25a1 is 1.25 × 13 is 16.3 mm;
the length b of the bottom edge of the parallelogram is 0.35a 2-0.35 × 16.3.3-5.7 mm;
the parallelogram angle α - α -30 °.
The method of using the anchoring force enhancing anchor of the rib type anchor of this embodiment is the same as that of embodiment 1.
The specific implementation mode has the following beneficial effects:
because 3-5 anchors 1 are uniformly arranged on the rod body 4 of the anchor rod, the anchoring force is provided through the embedding force of anchor feet 6 on the anchors 1 and surrounding rocks, the required anchoring force is borne on the whole length of the rod body 4, and compared with a seam type anchor rod, the anchor rod is easier to install and has larger initial anchoring force; and because the anchor foot 6 on the anchor 1 has higher intensity, the resistance that the anchor power that provides for the rock stratum behind the anchor foot 6 embedding rock stratum, it is bigger more firm for the anchoring power of mechanical expanding shell formula stock, it is higher for hook formula and claw formula structural strength, can provide better support for the rock for the body of rod 4's of stock life is longer.
In the embodiment, 3-5 anchors 1 are connected to the rod body 4 through threads, so that the structure is simple; tray 2 and fixation nut 3 that use during the installation are the standard component, have reduceed the processing degree of difficulty and manufacturing cost effectively, are fit for industrial production, can show the economic effect who improves construction enterprise.
According to the specific embodiment, the anchors 1 are in threaded connection with the rod bodies 4, so that the length of the rod bodies 4 and the number of the anchors 1 can be changed in time according to surrounding rock conditions and actual conditions, the length of the rod bodies 4 is 2000-2500 mm, the flexibility is high, and the anchoring force can meet actual requirements on site; meanwhile, the anchor 1, the tray 2, the fixing nut 3 and the rod body 4 are separately packaged when leaving the factory, so that the anchor is convenient to transport, store and install, and the applicability is strong.
Therefore, the concrete implementation mode has the advantages of low installation difficulty, strong anchoring force and high reliability.
Claims (2)
1. The utility model provides a take anchoring force reinforcing stock of rib formula anchor which characterized in that: the anchoring force enhancing anchor rod of the umbrella-type anchor is composed of K anchors (1), 1 tray (2), 1 fixing nut (3) and 1 rod body (4); the rod body (4) is a threaded rod piece, and the length and the thread major diameter of the threaded rod piece are sequentially represented by letters L1 and D; the K anchors (1) are uniformly fixed on the rod body (4) through threads, the tail end of the rod body (4) is provided with a tray (2), and the tray (2) is connected with the rod body (4) through a fixing nut (3);
the K anchors (1) are numbered from the head of the rod body (4), the serial numbers are 1 st, 2 nd, … … th and K th in sequence, and K is a natural number of 3-5;
the distance L2 between the top end of the 1 st anchor (1) and the head of the rod body (4) is (0.14-0.20) L1,
the distance L3 between each anchor (1) is (0.15-0.25) L1;
the anchors (1) are in a rib type, each anchor (1) is an integral body consisting of 1 hexagon nut (5) and 6 anchor feet (6), the 6 anchor feet (6) are positioned on the same plane of the hexagon nut (5), the bottoms of the 6 anchor feet (6) are connected to form a hexagon, the bottom edge of each anchor foot (6) is parallel to the corresponding edge of the hexagon nut (5), the centers of the 6 anchor feet (6) are symmetrically inclined outwards, and the outward inclination angle α' of each anchor foot (6) is 30-60 degrees;
the thread major diameter of the hexagonal nut (5) is the same as the thread major diameter D of the rod body (4), the circumscribed circle radius R of the hexagonal nut (5) is (1-1.2) D, and the thickness a3 of the hexagonal nut (5) is (0.35-0.55) R;
the anchor foot (6) is an oblique parallelepiped, the geometric shape of the oblique parallelepiped is that the front face is rectangular, the width a1 of the rectangle is (0.65-0.85) R, the length a2 of the rectangle is (1.25-1.55) a1, the side face is a parallelogram, the length b of the bottom edge of the parallelogram is (0.35-0.55) a2, and the included angle α of the parallelogram is equal to the outward inclined angle α' of the anchor foot (6).
2. A use method of an anchoring force enhanced anchor rod with an umbrella frame type anchor is characterized in that the method comprises the following steps:
(1) determining the number K of the anchors (1) according to the surrounding rock conditions and construction requirements, and installing the K anchors (1) to the positions corresponding to the rod body (4);
(2) the head of a rod body (4) with an anchor (1) is driven into a rock mass at the bottom of an anchor hole, and then the rod body (4) is pulled outwards until anchor feet (6) are embedded into rock walls around the anchor hole;
(3) and (3) inserting a grouting pipe into the gap of the anchor foot (6), grouting, after the slurry is solidified and the anchor rod is stable, loading the tray (2) and the fixing nut (3) into the tail part of the rod body (4), and fixing the tray (2) at the anchor hole opening by the fixing nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010306556.9A CN111322099A (en) | 2020-04-17 | 2020-04-17 | Anchoring force reinforcing anchor rod with umbrella rib type anchoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010306556.9A CN111322099A (en) | 2020-04-17 | 2020-04-17 | Anchoring force reinforcing anchor rod with umbrella rib type anchoring device |
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| CN111322099A true CN111322099A (en) | 2020-06-23 |
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|---|---|---|---|
| CN202010306556.9A Pending CN111322099A (en) | 2020-04-17 | 2020-04-17 | Anchoring force reinforcing anchor rod with umbrella rib type anchoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648806A (en) * | 2020-07-09 | 2020-09-11 | 中国科学院地质与地球物理研究所 | Energy-absorbing anchor rod device with umbrella-shaped structure |
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2020
- 2020-04-17 CN CN202010306556.9A patent/CN111322099A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648806A (en) * | 2020-07-09 | 2020-09-11 | 中国科学院地质与地球物理研究所 | Energy-absorbing anchor rod device with umbrella-shaped structure |
| CN111648806B (en) * | 2020-07-09 | 2021-05-14 | 中国科学院地质与地球物理研究所 | Energy-absorbing anchor rod device with umbrella-shaped structure |
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