CN111271108A - Anchor rod cable series-parallel coordination support system capable of realizing load transfer - Google Patents
Anchor rod cable series-parallel coordination support system capable of realizing load transfer Download PDFInfo
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- CN111271108A CN111271108A CN202010172604.XA CN202010172604A CN111271108A CN 111271108 A CN111271108 A CN 111271108A CN 202010172604 A CN202010172604 A CN 202010172604A CN 111271108 A CN111271108 A CN 111271108A
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- anchor rod
- anchor
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- hydraulic piston
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- 239000003921 oil Substances 0.000 claims description 16
- 230000035515 penetration Effects 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- 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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to the field of roadway support, in particular to an anchor rod cable series-parallel coordination support system capable of realizing load transfer, which comprises an anchor cable hydraulic piston, an anchor rod hydraulic piston, a high-pressure pipe, a first overflow valve, a second overflow valve and a pressure gauge, wherein the anchor cable hydraulic piston is connected with the anchor rod hydraulic piston in series-parallel; the anchor cable hydraulic piston and the anchor rod hydraulic piston are respectively arranged on an anchor cable and an anchor rod, the anchor rod hydraulic pistons between the anchor rods are connected through high-pressure pipes to form an anchor rod series system, the anchor cable hydraulic pistons on the anchor cables are connected with the high-pressure pipes and then connected into a first overflow valve, and then connected with the anchor rod series system in parallel to form an anchor rod cable series-parallel system.
Description
Technical Field
The invention relates to the field of roadway support, in particular to an anchor rod cable series-parallel coordination support system capable of realizing load transfer.
Background
The anchor rod-anchor cable combined support has the advantages of anchor rod support, and simultaneously, the anchor cable support makes up the defects of anchor rod support due to large anchoring depth, high bearing capacity and large pretightening force. Therefore, the anchor rod-anchor cable combined support is a typical mode of roadway (tunnel) support, and achieves good support effect. However, due to the difference between the length and the elongation of the anchor rod and the anchor cable, the adaptability of the anchor rod and the anchor cable to the movement of surrounding rocks is different, the anchor rod-anchor cable combined support is not coordinated, the anchor rod or the anchor cable is broken in advance, and the superiority of the anchor rod-anchor cable combined support is not fully exerted.
The invention provides a pressure yielding and energy releasing device aiming at the problem of overlarge pressure of a bolt, which mainly increases the elongation rate of the bolt (cable) from the aspects of materials and structures, such as a spring (CN 106979028A), a pressure-releasing piston (CN 109184765A, CN 109356629A, CN 109736864A), a friction type pressure yielding device (CN 109915188A), a pressure yielding ring (CN 200996296Y) and the like which are connected in series between a tray and a nut. The devices are passive single bodies and have limited yielding effect, cannot fully play the coordination support of the anchor rods and the anchor cables, and cannot play a good lasting and stable support role.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an anchor rod cable series-parallel coordination support system capable of realizing load transfer.
The technical scheme adopted by the invention for solving the technical problems is as follows: a coordinated support system capable of realizing serial and parallel connection of anchor rods and cables and capable of realizing load transfer comprises an anchor cable hydraulic piston, an anchor rod hydraulic piston, a first overflow valve, a second overflow valve, a high-pressure pipe, a pressure gauge, a hydraulic inner piston, an inner piston outer wall, a first anchor rod penetrating port, a hydraulic piston outer cylinder, a second anchor rod penetrating port, a piston outer cylinder bottom plate, a piston inner cavity, a piston outer cylinder outer wall, an outer connecting port, an anchor rod and a nut, wherein the first anchor rod penetrating port is formed in the center position of the anchor cable hydraulic piston, the second anchor rod penetrating port is formed in the center position of the anchor rod hydraulic piston, the anchor rod penetrates through the first anchor rod penetrating port and the second anchor rod penetrating port, the upper surface of the hydraulic inner piston abuts against the bottom of a rough hole dug in surrounding rock, the outer side of the piston outer cylinder bottom plate is fixed through the, the anchor rod hydraulic pistons are connected in series through the high-pressure pipes to form an anchor rod series system, the pressure meter and the second overflow valve are communicated with the outer side of any anchor rod hydraulic piston, the anchor rod hydraulic pistons are connected with the first overflow valve and are connected into the anchor rod series system in parallel through the high-pressure pipes to form an anchor rod cable series-parallel system.
Specifically, anchor rope hydraulic piston with stock hydraulic piston inner structure is the same, just anchor rope hydraulic piston with the inside emulsion that is filled with of stock hydraulic piston, the length of stock hydraulic piston is confirmed by the coal rock body demand of stepping down, the length of anchor rope hydraulic piston is about 2 times of stock hydraulic piston length.
Specifically, when the oil pressure in the anchor cable hydraulic piston reaches an oil pressure value converted by 90% of the anchor cable breaking force, the first overflow valve is opened.
Specifically, after the first overflow valve is opened, hydraulic oil in the anchor cable hydraulic piston enters the anchor rod series system until the pressure in the anchor cable hydraulic piston is reduced to an oil pressure value converted from 90% of the anchor cable breaking force.
Specifically, after hydraulic oil in the anchor cable hydraulic piston enters the anchor rod series system through the first overflow valve, the overall axial force of the anchor rod support body can be increased, when the reading of the pressure gauge connected with the anchor rod series system in series reaches an oil pressure value converted from 90% of anchor rod breaking force, the second overflow valve is opened to release pressure, the anchor rod is prevented from being broken due to too fast pressurization, and at the moment, whether reinforcement support is needed or not needs to be evaluated.
Specifically, after the anchor rod cable series-parallel connection system is installed, the opening direction of the overflow valve can be adjusted according to the roof separation position, if the roof separation position is located outside the anchor rod support range, the opening direction of the first overflow valve is as described above, and if the roof separation position is located in the anchor rod support area, the opening direction of the first overflow valve is opposite.
Specifically, the anchor rod cable series-parallel connection system can be installed in stages, and in the first stage, the anchor rod is provided with the anchor cable hydraulic piston or the anchor rod hydraulic piston; and in the second stage, the high-pressure pipe, the second overflow valve and the pressure gauge are used for connecting the anchor rod hydraulic piston to form an anchor rod series system at the rear of the tunneling machine, then the first overflow valve and the high-pressure pipe are used for connecting the anchor rod hydraulic piston in parallel to the anchor rod series system, and finally the anchor rod cable series-parallel system is formed.
The invention has the beneficial effects that:
the invention relates to a coordinated support system for serial and parallel connection of anchor rods and cables, which can realize load transfer, wherein a first anchor rod penetrating port is arranged at the center of an anchor rod hydraulic piston, a second anchor rod penetrating port is arranged at the center of the anchor rod hydraulic piston, the anchor rod penetrates through the first anchor rod penetrating port and the second anchor rod penetrating port, the outer edges of the anchor rod hydraulic piston and the anchor rod hydraulic piston are connected with a high-pressure pipe through an external connector, the anchor rod hydraulic piston and the anchor rod hydraulic piston are respectively arranged on the anchor rods and the anchor rods, the anchor rod hydraulic pistons among the anchor rods are connected by the high-pressure pipe to form an anchor rod serial system, the anchor rod hydraulic piston on each anchor cable is connected with the high-pressure pipe and then connected with a first overflow valve in parallel connection with the anchor rod serial system to form the anchor rod and cable serial and parallel system, the system has simple operation and can be installed in steps without influencing the construction, the anchor rod and anchor cable support device is used for improving the bearing capacity of an anchor rod support body or an anchor cable support body, reducing the load acting on an anchor cable or an anchor rod instead of simple yielding, and further realizing the coordinated support of the anchor rod and the anchor cable.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic diagram of an anchor rod cable series-parallel system of an anchor rod cable series-parallel coordination support system capable of realizing load transfer, provided by the invention;
FIG. 2 is a schematic illustration of a hydraulic piston installation;
FIG. 3 is a top view of a hydraulic piston arrangement;
FIG. 4 is a view of a hydraulic piston;
fig. 5 is a cross-sectional view of the hydraulic piston.
In the figure: 1. anchor rope hydraulic piston, 2, stock hydraulic piston, 3a, first overflow valve, 3b, second overflow valve, 4, high-pressure tube, 5, manometer, 6, hydraulic internal piston, 6a, internal piston outer wall, 6b, first stock penetrator, 7, hydraulic piston urceolus, 7a, second stock penetrator, 7b, piston urceolus bottom plate, 7c, piston inner chamber, 7d, piston urceolus outer wall, 8, outer connector, 9, stock, 10, nut.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-5, the anchor rod and cable series-parallel coordination support system capable of realizing load transfer according to the present invention includes an anchor cable hydraulic piston 1, an anchor rod hydraulic piston 2, a first overflow valve 3a, a second overflow valve 3b, a high pressure pipe 4, a pressure gauge 5, a hydraulic inner piston 6, an inner piston outer wall 6a, a first anchor rod penetration port 6b, a hydraulic piston outer cylinder 7, a second anchor rod penetration port 7a, a piston outer cylinder bottom plate 7b, a piston inner cavity 7c, a piston outer cylinder outer wall 7d, an external connection port 8, an anchor rod 9 and a nut 10, wherein the first anchor rod penetration port 6b is disposed at a central position of the anchor cable hydraulic piston 1, the second anchor rod penetration port 7a is disposed at a central position of the anchor rod hydraulic piston 2, the anchor rod 9 penetrates through the first anchor rod penetration port 6b and the second anchor rod penetration port 7a, an upper surface of the hydraulic inner piston 6 abuts against a bottom of a rough hole excavated in a surrounding rock, the outer side of the piston outer cylinder bottom plate 7b is fixed through the nut 10, the anchor rod hydraulic pistons 2 are multiple in number, the anchor rod hydraulic pistons 2 are connected in series through the high-pressure pipe 4 to form an anchor rod series system, the pressure gauge 5 and one second overflow valve 3b are communicated with the outer side of any anchor rod hydraulic piston 2, the anchor rod hydraulic pistons 2 are connected with the first overflow valve 3a, and the high-pressure pipe 4 is connected in parallel into the anchor rod series system to form an anchor rod cable series-parallel system.
Specifically, anchor rope hydraulic piston 1 with 2 inner structure of stock hydraulic piston are the same, just anchor rope hydraulic piston 1 with 2 inside flooding emulsions of stock hydraulic piston, 2 length of stock hydraulic piston is confirmed by the coal rock mass demand of letting press, anchor rope hydraulic piston 1's length is about 2 times of 2 length of stock hydraulic piston.
Specifically, when the oil pressure in the anchor cable hydraulic piston 1 reaches an oil pressure value converted by 90% of the anchor cable breaking force, the first overflow valve 3a is opened.
Specifically, after the first overflow valve 3a is opened, the hydraulic oil in the anchor cable hydraulic piston 1 enters the anchor rod series system until the pressure in the anchor cable hydraulic piston 1 is reduced to an oil pressure value converted from 90% of the anchor cable breaking force.
Specifically, after hydraulic oil in the anchor cable hydraulic piston 1 enters the anchor rod series system through the first overflow valve 3a, the overall axial force of the anchor rod support body can be increased, when the reading of the pressure gauge 5 connected in series with the anchor rod system reaches an oil pressure value converted from 90% of anchor rod breaking force, the second overflow valve 3b is opened to release pressure, the anchor rod is prevented from being broken due to too fast pressurization, and at the moment, whether reinforcement support is needed or not needs to be evaluated.
Specifically, after the anchor rod cable series-parallel connection system is installed, the opening direction of the overflow valve can be adjusted according to the roof separation position, if the roof separation position is located outside the anchor rod support range, the opening direction of the first overflow valve 3a is as described above, and if the roof separation position is located in the anchor rod support area, the opening direction of the first overflow valve 3a is opposite.
Specifically, the anchor rod and cable series-parallel connection system can be installed in stages, and in the first stage, the anchor rod 9 is provided with the anchor cable hydraulic piston 1 or the anchor rod hydraulic piston 2; and in the second stage, the anchor rod hydraulic piston 2 is connected with the high-pressure pipe 4, the second overflow valve 3b and the pressure gauge 5 to form an anchor rod series system at the rear of the tunneling machine, and then the anchor cable hydraulic piston 1 is connected in parallel into the anchor rod series system by using the first overflow valve 3a and the high-pressure pipe 4 to finally form an anchor rod cable series-parallel system.
When the anchor cable hydraulic piston is used, the first anchor rod penetrating port 6b is formed in the center of the anchor cable hydraulic piston 1, the second anchor rod penetrating port 7a is formed in the center of the anchor rod hydraulic piston 2, the anchor rods 9 penetrate through the first anchor rod penetrating port 6b and the second anchor rod penetrating port 7a, the upper surface of the hydraulic inner piston 6 abuts against the bottom of a rough hole dug in surrounding rock, the outer side of the piston outer cylinder bottom plate 7b is fixed through the nuts 10, the anchor rod hydraulic pistons 2 are provided with a plurality of anchor rod hydraulic pistons 2, the anchor rod hydraulic pistons 2 are connected in series through the high-pressure pipe 4 to form an anchor rod series system, the pressure gauge 5 and the second overflow valve 3b are communicated with the outer side of any one anchor rod hydraulic piston 2, the anchor rod hydraulic pistons 2 are connected with the first overflow valve 31 and are connected in parallel to the anchor rod series system through the high-pressure pipe 4, forming an anchor rod and cable series-parallel system, when the oil pressure in the anchor cable hydraulic piston 1 reaches an oil pressure value converted by 90% of anchor cable breaking force, opening the first overflow valve 31, after the first overflow valve 31 is opened, the hydraulic oil in the anchor cable hydraulic piston 1 enters the anchor rod series system until the pressure in the anchor cable hydraulic piston 1 is reduced to the oil pressure value converted by 90% of anchor cable breaking force, after the hydraulic oil in the anchor cable hydraulic piston 1 enters the anchor rod series system through the first overflow valve 31, the overall axial force of the anchor rod support body is increased, when the reading of the pressure gauge 5 connected in series with the anchor rod system reaches the oil pressure value converted by 90% of anchor rod breaking force, opening the second overflow valve 3b for pressure relief to prevent the anchor rod from being broken due to too fast pressurization, and at the moment, whether reinforcement is needed or not needs to be evaluated, and after the anchor rod and cable series-parallel system is installed, the opening direction of the overflow valve can be adjusted according to the roof separation position, if the top plate separation position is located outside the anchor rod support range, the opening direction of the first overflow valve 31 is the same as that described above, if the top plate separation position is located in the anchor rod support area, the opening direction of the first overflow valve 31 is opposite, the anchor rod cable series-parallel connection system can be installed in stages, and in the first stage, the anchor rod 9 is provided with the anchor cable hydraulic piston 1 or the anchor rod hydraulic piston 2; in the second stage, the anchor rod hydraulic piston 2 is connected with the high-pressure pipe 4, the second overflow valve 3b and the pressure gauge 5 to form an anchor rod series system, then the anchor rope hydraulic piston 1 is connected in parallel with the anchor rod series system by using the first overflow valve 31 and the high-pressure pipe 4 to finally form an anchor rod cable series-parallel system, the outer edges of the anchor rope hydraulic piston 1 and the anchor rod hydraulic piston 2 are connected with the high-pressure pipe 4 through the external connecting port 8, the anchor rope hydraulic piston 1 and the anchor rod hydraulic piston 2 are respectively arranged on an anchor rope and an anchor rod, the anchor rod hydraulic pistons 2 between anchor rods are connected by using high-pressure pipes to form an anchor rod series system, the anchor rope hydraulic piston 1 on each anchor rope is connected with the high-pressure pipe 4 and then connected with the first overflow valve 3a and then connected with the anchor rod series system in parallel, the system can transfer overlarge load in the anchor rope or the anchor rod, is used for improving the bearing capacity of the anchor rod support body or the anchor rope support body, reduces the load acting on the anchor rope or the anchor rod, and is not simple in yielding, so that the coordinated support of the anchor rod and the anchor rope is realized.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a can realize anchor rod cable series-parallel connection coordination support system that load shifts which characterized in that: comprises an anchor cable hydraulic piston (1), an anchor rod hydraulic piston (2), a first overflow valve (3a), a second overflow valve (3b), a high-pressure pipe (4), a pressure gauge (5), a hydraulic inner piston (6), an inner piston outer wall (6a), a first anchor rod penetration opening (6b), a hydraulic piston outer cylinder (7), a second anchor rod penetration opening (7a), a piston outer cylinder bottom plate (7b), a piston inner cavity (7c), a piston outer cylinder outer wall (7d), an outer connecting opening (8), an anchor rod (9) and a nut (10), wherein the first anchor rod penetration opening (6b) is formed in the center position of the anchor cable hydraulic piston (1), the second anchor rod penetration opening (7a) is formed in the center position of the anchor rod hydraulic piston (2), and the anchor rod (9) penetrates through the first anchor rod penetration opening (6b) and the second anchor rod penetration opening (7a), the hydraulic inner piston (6) is arranged on the upper surface of the upper piston and is arranged at the bottom of a rough hole dug in surrounding rocks, the outer side of the piston outer cylinder bottom plate (7b) is fixed through the nut (10), the anchor rod hydraulic pistons (2) are arranged in a plurality of and a plurality of the anchor rod hydraulic pistons (2) are arranged in series through the high-pressure pipes (4) to form an anchor rod series system, the outer sides of the anchor rod hydraulic pistons (2) are communicated with the pressure gauge (5) and the second overflow valve (3b), the anchor rod hydraulic pistons (2) are connected with the first overflow valve (3a), and the anchor rod series system is connected in parallel through the high-pressure pipes (4) to form an anchor rod cable series-parallel system.
2. The anchor rod cable series-parallel coordination support system capable of realizing load transfer according to claim 1, characterized in that: anchor rope hydraulic piston (1) with stock hydraulic piston (2) inner structure is the same, just anchor rope hydraulic piston (1) with stock hydraulic piston (2) inside is annotated and is filled up the emulsion, the length of stock hydraulic piston (2) is confirmed by the coal rock mass demand of yielding, the length of anchor rope hydraulic piston (1) is about 2 times of stock hydraulic piston (2) length.
3. The anchor rod cable series-parallel coordination support system capable of realizing load transfer according to claim 1, characterized in that: and when the oil pressure in the anchor cable hydraulic piston (1) reaches an oil pressure value converted by 90% of anchor cable breaking force, the first overflow valve (3a) is opened.
4. The anchor rod cable series-parallel coordination support system capable of realizing load transfer according to claim 1, characterized in that: after the first overflow valve (3a) is opened, hydraulic oil in the anchor cable hydraulic piston (1) enters the anchor rod series system until the pressure in the anchor cable hydraulic piston (1) is reduced to an oil pressure value converted from 90% of anchor cable breaking force.
5. The anchor rod cable series-parallel coordination support system capable of realizing load transfer according to claim 1, characterized in that: after hydraulic oil in the anchor cable hydraulic piston (1) enters the anchor rod series system through the first overflow valve (3a), the overall axial force of the anchor rod support body can be increased, when the reading of the pressure gauge (5) connected with the anchor rod system in series reaches an oil pressure value converted from 90% of anchor rod breaking force, the second overflow valve (3b) is opened for pressure relief, the anchor rod is prevented from being broken due to too fast pressurization, and at the moment, whether reinforcement support is needed or not needs to be evaluated.
6. The anchor rod cable series-parallel coordination support system capable of realizing load transfer according to claim 1, characterized in that: after the anchor rod cable series-parallel system is installed, the opening direction of the overflow valve can be adjusted according to the roof separation position, if the roof separation position is located outside the anchor rod support range, the opening direction of the first overflow valve (3a) is as the same as the opening direction, and if the roof separation position is located in the anchor rod support area, the opening direction of the first overflow valve (3a) is opposite.
7. The anchor rod cable series-parallel coordination support system capable of realizing load transfer according to claim 1, characterized in that: the anchor rod and cable series-parallel connection system can be installed in stages, and in the first stage, the anchor rod (9) is provided with the anchor cable hydraulic piston (1) or the anchor rod hydraulic piston (2); and in the second stage, the anchor rod hydraulic piston (2) is connected by using the high-pressure pipe (4), the second overflow valve (3b) and the pressure gauge (5) at the rear part of the tunneling machine to form an anchor rod series system, and then the anchor cable hydraulic piston (1) is connected in parallel into the anchor rod series system by using the first overflow valve (3a) and the high-pressure pipe (4), so that the anchor rod cable series-parallel system is finally formed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010172604.XA CN111271108B (en) | 2020-03-12 | 2020-03-12 | Anchor rod cable series-parallel coordination support system capable of realizing load transfer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010172604.XA CN111271108B (en) | 2020-03-12 | 2020-03-12 | Anchor rod cable series-parallel coordination support system capable of realizing load transfer |
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| CN111271108A true CN111271108A (en) | 2020-06-12 |
| CN111271108B CN111271108B (en) | 2021-07-06 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86203931U (en) * | 1986-06-09 | 1987-12-05 | 煤炭工业部煤炭科学院南京研究所 | Plug-in static pressure type anchor-pole installing device in pipe |
| KR100972357B1 (en) * | 2009-02-09 | 2010-07-26 | 주식회사 상신산업 | Expandable tube type rock bolt |
| CN102654059A (en) * | 2012-05-25 | 2012-09-05 | 江苏建筑职业技术学院 | One-piece type yielding anchor rod system |
| CN104846822A (en) * | 2015-05-07 | 2015-08-19 | 重庆交通大学 | Yielding anchor cable |
| CN109707410A (en) * | 2019-01-16 | 2019-05-03 | 交通运输部公路科学研究所 | Wisdom sensing type tunnel-liner support structural system |
| CN110284913A (en) * | 2019-07-19 | 2019-09-27 | 山东科技大学 | A kind of interior drawing anchor cable structure of the lane large span Qie Dingcheng top plate |
| CN110761820A (en) * | 2019-11-07 | 2020-02-07 | 长江水利委员会长江科学院 | Yielding anchor rod design method suitable for large deformation of weak surrounding rock |
-
2020
- 2020-03-12 CN CN202010172604.XA patent/CN111271108B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86203931U (en) * | 1986-06-09 | 1987-12-05 | 煤炭工业部煤炭科学院南京研究所 | Plug-in static pressure type anchor-pole installing device in pipe |
| KR100972357B1 (en) * | 2009-02-09 | 2010-07-26 | 주식회사 상신산업 | Expandable tube type rock bolt |
| CN102654059A (en) * | 2012-05-25 | 2012-09-05 | 江苏建筑职业技术学院 | One-piece type yielding anchor rod system |
| CN104846822A (en) * | 2015-05-07 | 2015-08-19 | 重庆交通大学 | Yielding anchor cable |
| CN109707410A (en) * | 2019-01-16 | 2019-05-03 | 交通运输部公路科学研究所 | Wisdom sensing type tunnel-liner support structural system |
| CN110284913A (en) * | 2019-07-19 | 2019-09-27 | 山东科技大学 | A kind of interior drawing anchor cable structure of the lane large span Qie Dingcheng top plate |
| CN110761820A (en) * | 2019-11-07 | 2020-02-07 | 长江水利委员会长江科学院 | Yielding anchor rod design method suitable for large deformation of weak surrounding rock |
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