CN214697888U - Mining anti-exposure anchor rod - Google Patents
Mining anti-exposure anchor rod Download PDFInfo
- Publication number
- CN214697888U CN214697888U CN202120362746.2U CN202120362746U CN214697888U CN 214697888 U CN214697888 U CN 214697888U CN 202120362746 U CN202120362746 U CN 202120362746U CN 214697888 U CN214697888 U CN 214697888U
- Authority
- CN
- China
- Prior art keywords
- anchor rod
- sleeve
- exposure
- supporting plate
- mining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a coal is device for underworkings stock. The mining anti-exposure anchor rod comprises an anchor rod, wherein the anchor rod is arranged in an anchor rod eye, one end of the anchor rod, which is exposed out of the anchor rod eye, is sleeved with a sleeve through a supporting plate, and a bolt tightly presses the sleeve at the end part of the anchor rod through another supporting plate; the two supporting plates are sleeved on the anchor rod in a penetrating manner. The utility model discloses fine solved because of the stock exposes the overlength, full and can not reach the requirement of fastening on the screw thread, stopped the needs that the secondary was mended and beaten, through making up for my ore deposit because of the stock exposes overlength failure rate at 5%, the whole year in my ore deposit is tunneled the footage and is calculated according to 1.2 ten thousand meters, can save 50 ten thousand yuan, detect compressive strength 140KN with the hydraulic press, can take place deformation gradually after reaching 150KN, accord with the requirement through test strength.
Description
Technical Field
The utility model relates to a coal is device for underworkings stock.
Background
Because the development demand of coal resources is continuously increased, the current mine tunnel is increased along with the buried depth, the geological condition is complex, the ground stress is high, and most mines face the problem of the control of the surrounding rock of the deep well tunnel. With the popularization of the anchor-shotcrete supporting technology in roadway supporting, the paving rod is greatly developed from material to structure. However, as the surrounding rock of the underground roadway of the mine is mostly argillaceous sandstone, the coal quality of the mined coal seam 2# coal and 3# coal is softer, the wall caving and the slag falling are easily caused by the vibration in the anchor rod construction process, the loosening ring range is larger, the loose of the anchor rod tray and the surrounding rock or the anchor rod exposed overlong due to the drilling construction factors cause that the anchor rod cannot play a role, so that the support fails, the screw thread is full and the requirement of fastening cannot be met, and secondary repair is needed. The existing problems can cause serious deformation or damage of the roadway, the roadway cannot be normally used, the production of a mining area is influenced, even casualties are caused, and a large amount of material waste can be caused by the repair of the roadway.
Disclosure of Invention
An object of the utility model is to avoid prior art's not enough to provide a simple structure, convenient to use's long stock exposes and uses extension sleeve.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the mining anti-exposure anchor rod comprises an anchor rod, wherein the anchor rod is arranged in an anchor rod eye of a mine, one end of the anchor rod, which is exposed out of the anchor rod eye, is sleeved with a sleeve through a supporting plate, and a bolt tightly presses the sleeve at the end part of the anchor rod through another supporting plate; the two supporting plates are sleeved on the anchor rod in a penetrating manner and are matched with the sleeve (4) to increase the supporting strength of the anchor rod (1); the sleeve include at least one sleeve body, the cross section of sleeve body is circular, and the circular cross section at sleeve body both ends is less than the circular cross section at sleeve body middle part, makes the appearance of sleeve body is calabash form, and the central point that runs through the sleeve body puts and is equipped with the sleeve perforation that is used for wearing to establish the stock.
Furthermore, the calabash sleeve body includes at least two, and wears the cover in proper order on the stock that exposes.
Furthermore, the two support plates are respectively arranged at two ends of the sleeve in a split manner, and the sleeve through holes are arranged on the two support plates.
Furthermore, the layer board include the bottom plate, be equipped with on the bottom plate with the layer board joint that the sleeve is perforated to match connects, still including running through the central point that the layer board put to be equipped with the layer board perforation that is used for wearing the cover stock.
Furthermore, the two supporting plates are respectively and integrally arranged at two ends of the sleeve.
Further, a first abrasive reduction plate is arranged between the first supporting plate and the sleeve; and a second wear reducing plate is arranged between the second supporting plate and the sleeve.
Further, the installation length of the sleeve is matched with the length of the exposed part of the anchor rod.
Further, the sleeve is made of high manganese steel with the thickness of 3-4 mm.
The utility model has the advantages that: the utility model discloses fine solved because of the stock exposes the overlength, full and can not reach the requirement of fastening on the screw thread, stopped the needs that the secondary was mended and beaten, through making up for my ore deposit because of the stock exposes overlength failure rate at 5%, the whole year in my ore deposit is tunneled the footage and is calculated according to 1.2 ten thousand meters, can save 50 ten thousand yuan, detect compressive strength 140KN with the hydraulic press, can take place deformation gradually after reaching 150KN, accord with the requirement through test strength.
And simultaneously, the utility model discloses a calabash form sleeve is in order to show the surperficial emergence displacement back by the tunnel mine pressure, and calabash form's stock leaks the sleeve outward and extrudees the deformation back to become the pie and also can play the resistance to compression effect, and if the outer sleeve that leaks that adopts the straight tube-shape is irregular form after being destroyed by extrusion deformation, and easily explodes and splits, forms the non-strength space area between stock layer board and the rock mass after the sleeve destroys to cause and strut the inefficacy.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 3 is a schematic structural view of the sleeve of the present invention;
fig. 4 is a schematic structural diagram of the support plate of the present invention.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
According to the actual condition of the underground mine, anchor rods with the diameter phi 18, the diameter phi 20 and the diameter phi 22 are selected and the models phi 24-40 mm and phi 24-60 mm are selected, and as surrounding rocks of the underground mine roadway are mostly argillaceous sandstone, and the mined coal seam 2# coal and 3# coal are soft, the problems that the exposed long anchor rod thread is fully buckled and the fastening requirement cannot be met are often encountered, only secondary repairing and remedying can be carried out, but the remediation effect is not good. The event the utility model provides a bolt can choose for use suitable sleeve according to exposing length, and the sleeve adopts the calabash form simultaneously, shows the surperficial back that takes place the displacement receiving tunnel mine pressure, and the sleeve extrusion becomes also to play the resistance to compression effect after forming the pie, and it is showing to strut the effect to install respectively at the position that layer board and nut are hugged closely to the sleeve and subtract the abrasive disc, with the bolt fastening to the requirement can, effectively solved above-mentioned problem, the utility model discloses a concrete embodiment as follows:
example 1: as shown in fig. 1, 3 and 4, the mining anti-exposure anchor rod comprises an anchor rod 1, wherein the anchor rod 1 is installed in an anchor rod eye 2 of a mine, a sleeve 4 is sleeved at one end, exposed out of the anchor rod eye 2, of the anchor rod 1 through a supporting plate 3, a bolt 6 tightly presses the sleeve 4 at the end part of the anchor rod 1 through another supporting plate 3, and the installation length of the sleeve 4 is matched with the length of an exposed part of the anchor rod 1; the two supporting plates 3 are sleeved on the anchor rod 1 in a penetrating manner and are matched with the sleeve 4 to increase the supporting strength of the anchor rod 1; a first abrasive reducing piece 51 is arranged between the first supporting plate 31 and the sleeve 4; a second wear reducing plate 52 is arranged between the second supporting plate 32 and the sleeve 4.
The sleeve 4 include at least one sleeve body 41, the cross section of sleeve body 41 is circular, and the circular cross section at sleeve body 41 both ends is less than the circular cross section at sleeve body 41 middle part, makes the appearance of sleeve body 41 is calabash form, and the central point that runs through sleeve body 41 puts and is equipped with the sleeve perforation 42 that is used for wearing to establish stock 1. The sleeve 4 is made of high manganese steel with the thickness of 3-4 mm.
The two support plates 3 are respectively arranged at two ends of the sleeve 4 in a split manner, and the sleeve through holes 42 are arranged on the two support plates 3. The supporting plate 3 comprises a bottom plate 31, a supporting plate clamping joint 32 matched with the sleeve through hole 42 is arranged on the bottom plate 31, and a supporting plate through hole 33 used for penetrating and sleeving the anchor rod 1 is formed in the center position penetrating through the supporting plate 3.
When the exposed long anchor rod is full of threaded fasteners and cannot meet the fastening requirement, the exposed anchor rod 1 is sleeved with the gourd-shaped sleeve 4, the exposed anchor rod 1 is compressed by the two supporting plates 3 and the bolt 6, and the abrasive reducing plates are installed at the same time, so that the anchor rod 1 is compressed in place, the cost is lowest, and the supporting effect of the anchor rod 1 is improved by the simplest structure.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. The mining anti-exposure anchor rod is characterized by comprising an anchor rod (1), wherein the anchor rod (1) is installed in an anchor rod eye (2) of a mine, a sleeve (4) is sleeved at one end, exposed out of the anchor rod eye (2), of the anchor rod (1) through a supporting plate (3), and a bolt (6) tightly presses the sleeve (4) at the end part of the anchor rod (1) through another supporting plate (3); the two supporting plates (3) are sleeved on the anchor rod (1) in a penetrating manner and are matched with the sleeve (4) to increase the supporting strength of the anchor rod (1); sleeve (4) include at least one sleeve body (41), the cross section of sleeve body (41) is circular, and the circular cross section at sleeve body (41) both ends is less than the circular cross section at sleeve body (41) middle part, makes the appearance of sleeve body (41) is calabash form, and the central point that runs through sleeve body (41) puts and is equipped with the sleeve perforation (42) that are used for wearing to establish stock (1).
2. The mining anti-exposure anchor rod as claimed in claim 1, wherein the gourd-shaped sleeve body (41) comprises at least two and is sequentially sleeved on the exposed anchor rod (1).
3. The mining anti-exposure anchor rod as claimed in claim 1, wherein the two support plates (3) are respectively arranged at two ends of the sleeve (4) in a split manner, and the sleeve through holes (42) are arranged on the two support plates (3).
4. The mining anti-exposure anchor rod as claimed in claim 3, wherein the supporting plate (3) comprises a bottom plate (31), a supporting plate clamping joint (32) matched with the sleeve through hole (42) is arranged on the bottom plate (31), and a supporting plate through hole (33) for penetrating and sleeving the anchor rod (1) is arranged in the center position penetrating through the supporting plate (3).
5. The mining anti-exposure anchor rod as claimed in claim 1, wherein the two supporting plates (3) are respectively and integrally arranged at two ends of the sleeve (4).
6. A mining exposure-proof anchor rod according to any one of claims 1 to 5, characterized in that a first and a second wear-reducing plate (51, 52) are arranged between the two supporting plates (3) and the sleeve (4).
7. The mining exposure-proof anchor rod as claimed in any one of claims 1 to 5, characterized in that the installation length of the sleeve (4) is matched with the length of the exposed part of the anchor rod (1).
8. The mining exposure-prevention anchor rod as claimed in any one of claims 1 to 5, wherein the sleeve (4) is made of high manganese steel with a thickness of 3-4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120362746.2U CN214697888U (en) | 2021-02-07 | 2021-02-07 | Mining anti-exposure anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120362746.2U CN214697888U (en) | 2021-02-07 | 2021-02-07 | Mining anti-exposure anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214697888U true CN214697888U (en) | 2021-11-12 |
Family
ID=78567378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120362746.2U Active CN214697888U (en) | 2021-02-07 | 2021-02-07 | Mining anti-exposure anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214697888U (en) |
-
2021
- 2021-02-07 CN CN202120362746.2U patent/CN214697888U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kang | Support technologies for deep and complex roadways in underground coal mines: a review | |
| CN104373145B (en) | Embedded classification constant-resistance shearing resistance large deformation anchor and method | |
| Zhang et al. | Ground stability of underground gateroad with 1 km burial depth: a case study from Xingdong coal mine, China | |
| CN106223931B (en) | System and method for monitoring reserved coal pillar gob-side entry retaining floor crack development | |
| CN106285628A (en) | A kind of monitor without coal column gob side entry retaining floor crack grow detection system and method | |
| CN109209293A (en) | A kind of crossdrift takes off projecting coal bed comprehensive outburst control construction method | |
| CN112610251B (en) | Control method of coal mining roadway top plate | |
| Skrzypkowski | Evaluation of rock bolt support for Polish hard rock mines | |
| Zhang et al. | Control technology of direct passing karstic collapse pillar in longwall top-coal caving mining | |
| CN110541710B (en) | V-level high-risk geological surrounding rock tunnel mechanized construction method | |
| CN214697888U (en) | Mining anti-exposure anchor rod | |
| CN103244185A (en) | Early warning method for instability of bolt-supported roadway roof separation | |
| Yuan et al. | A study on the mechanism and controlling techniques of roadway deformations under high in situ stress conditions | |
| CN102296974B (en) | Rapid maintaining method for broken roof in stope | |
| CN106761841A (en) | Working face tailgate fractured coal grouting reinforcement method | |
| CN113062759A (en) | Solid anchor bolt supporting device capable of grouting and net-shaped anchor bolt supporting structure | |
| CN115182782A (en) | Coal mining underground water 'shallow protection-deep storage' full-space protection method | |
| CN2714806Y (en) | Multi-segment partial stack combined anchor head device | |
| CN209483399U (en) | A kind of anti-HI high impact anchor rod pallet board monitoring anchor support force | |
| CN113216978B (en) | Long-short yielding anchor rod combined control method suitable for large deformation of soft rock tunnel | |
| CN110761792B (en) | Overold cutting device for coal face and application method | |
| CN110725326A (en) | Geotechnical engineering slope reinforcement device and method | |
| CN215979479U (en) | Novel filling pipeline fixing device | |
| CN210460658U (en) | Electromechanical mounting and supporting structure for coal mine | |
| CN214887151U (en) | Anchoring and drum pressing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |