CN108252731A - A kind of scalable compound anchor system based on condenser type stress measurement - Google Patents
A kind of scalable compound anchor system based on condenser type stress measurement Download PDFInfo
- Publication number
- CN108252731A CN108252731A CN201810179186.XA CN201810179186A CN108252731A CN 108252731 A CN108252731 A CN 108252731A CN 201810179186 A CN201810179186 A CN 201810179186A CN 108252731 A CN108252731 A CN 108252731A
- Authority
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- China
- Prior art keywords
- anchoring
- anchor
- section
- reinforcing bar
- free segment
- Prior art date
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Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 13
- 238000005259 measurement Methods 0.000 title claims abstract description 13
- 238000004873 anchoring Methods 0.000 claims abstract description 54
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 30
- 239000011435 rock Substances 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 239000011440 grout Substances 0.000 claims abstract description 8
- 230000001012 protector Effects 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 5
- 230000008093 supporting effect Effects 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 230000001550 time effect Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- E21D21/02—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection having means for indicating tension
Landscapes
- 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)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention provides a kind of scalable compound anchor system based on condenser type stress measurement, belongs to Geotechnical Engineering field.The system is divided into anchor head section, free segment and anchoring section, specifically includes head protector, fastener, bearing plate, anchoring part, waist rail, telescopic, casing, reinforcing bar, grout stop, centering shelf；There are capacitance-type strain gauge power measuring sensor, spring, welding position in telescopic；There are steel disc, connecting rod, top crown, bottom crown in capacitance-type strain gauge power measuring sensor.Telescopic is equipped between the front and rear section of reinforcing bar, spring is respectively together with front and rear section reinforcement welding, pass through the stroke of spring, the stress suffered by anchor pole and observation rock pressure variation can not only accurately be measured, it also is able to the deformation with rock mass and in a certain range Free Transform, it can play the role of discharging strain energy, there is good time effect.
Description
Technical field
The present invention relates to Geotechnical Engineering fields, particularly relate to a kind of based on the scalable compound of condenser type stress measurement
Type anchor system.
Background technology
Generally after roadway excavation, since mechanics static balancing original in the rock mass around tunnel is broken, and generate
Stress redistribution, thus causes roadway surrounding rock to destroy.To safeguard the stabilization in tunnel, need effectively to prop up roadway surrounding rock
Shield reaches and prevents country rock excessive deformation or loosening, that is, limits the excessive development of country rock rupture.Suspension roof support is that all kinds of mines are opened
It adopts, a key technology of the underground engineerings such as water conservancy and hydropower tunnel and railway, highway communication tunnel.Anchor pole can be common with country rock
Deformation, has good control effect to the excessive deformation of country rock.Rational bolt support technology both can ensure that the peace of underground engineering
Entirely, and there can be an apparent economic benefit.And as tunnel buried depth increases, it the complication of geological conditions and is adopted by strong
It influences, traditional suspension roof support gradually exposes many problems.In deep and complicated complicated roadway, conventional anchor supported laneway
Surrouding rock deformation is big, and support unit destroys seriously, and supporting effect is poor, it is impossible to meet safety in production requirement.For conventional anchor not
Foot, a kind of scalable composite anchor-rod device measured based on capacitance sensor stress of design is extremely urgent, which can not only
The enough stress accurately measured suffered by anchor pole and observation rock pressure variation, additionally it is possible to the deformation of rock mass in a certain range
Interior Free Transform can play the role of discharging strain energy, have good time effect.
Invention content
The technical problem to be solved in the present invention is to provide a kind of scalable compound anchorings based on condenser type stress measurement
System.
The system include anchor head section, free segment and anchoring section, anchor head section include head protector, fastener, bearing plate, anchoring part and
Waist rail, free segment include telescopic, casing and grout stop, and anchoring section is equipped with reinforcing bar and drilling；Wherein, there is condenser type in telescopic
Stress measuring sensor, spring and welding position；Have in capacitance-type strain gauge power measuring sensor steel disc, connecting rod, top crown and under
Pole plate, capacitance-type strain gauge power measuring sensor are fixed on reinforcing bar, and steel disc is connected with connecting rod, and top crown and bottom crown are located at respectively
Steel disc both ends；Reinforcing bar runs through anchor head section, free segment and anchoring section, and anchor head section connects free segment, free segment with waist rail by anchoring part
Anchoring section is connected by grout stop, anchoring section is located in deep stability ground, and free segment is located in shallow rock soil, and anchor head section is located at
Outside the ground of surface layer, free segment and anchoring section composition anchoring body, anchoring body are inserted into retaining structure, and anchoring body is along potential water use
It slides.
Wherein, head protector is mounted on outside fastener, and fastener is mounted on bearing plate, and bearing plate is mounted on anchoring part,
Anchoring part is mounted on waist rail.
Anchoring section is arranged in deep stability ground, in anchoring section reinforcing bar by binding agent make the anchor pole end of anchoring section with
Deep stability ground is bonded together, and so as to make shallow rock soil together with deep stability rock-reinforcing, makes country rock itself supporting
Itself.
Reinforcing bar is divided into front and rear two sections in anchor head section and free segment junction, and telescopic is equipped between front and rear two sections of reinforcing bar,
Respectively together with front and rear two sections of reinforcement weldings, leading portion reinforcing bar is bonded together spring in telescopic with deep stability ground,
The tail portion of back segment reinforcing bar is fixed by anchor head section.By the flexible of spring, telescopic is pulled, drives the steel being connected with connecting rod
Piece, so as to change the effective area that capacitance top crown and bottom crown mutually cover.The effective area mutually covered due to two-plate
It changes, capacitance also changes correspondingly, so as to obtain the stress and pressure from surrounding rock suffered by anchor pole by data processing end
Size.
Potential water use is in 45 ° with retaining structure.
By using spring by front and rear two sections of reinforcement weldings together, spring replace anchor pole stroke, be a significant increase
The bearing performance of anchor pole makes spring with the deformation of rock mass and Free Transform in a certain range, can play release strain energy
Effect has good time effect.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
On the one hand the device, can be observed the stress suffered by anchor pole at any time and be enclosed by capacitance-type strain gauge power measuring sensor
The pressure change of rock, so as to take measures to exclude dangerous situation in time；On the other hand, can with the deformation of rock mass and in a certain range from
By deforming, can be used in that Ground pressure activity is strong, rock moves and the middle incompetent bed of large deformation in supporting.It is fast with stress, it is anti-to provide bearing
Power is timely, and anchor force is big, and construction technology is simple, it is quick and easy for installation the advantages that, can be widely applied to mine, road, water conservancy water
The supporting of the geotechnical engineerings such as side slope, tunnel, the chamber in the fields such as electricity and field of reinforcement.
Description of the drawings
Fig. 1 is the scalable compound anchor system structure diagram based on condenser type stress measurement of the present invention；
Fig. 2 is the anchor system sectional view of the present invention；
The capacitance-type strain gauge strength that Fig. 3 is the present invention surveys sensor structure schematic diagram.
Wherein：1- head protectors, 2- fasteners, 3- bearing plates, 4- anchoring parts, 5- waist rails, 6- reinforcing bars, 7- casings, 8- anchoring bodys,
9- retaining structures, 10- potential water uses, 11- anchoring sections, 12- free segments, 13- anchor head sections, 14- centering shelf, 15- grout stops,
16- binding agents, 17- surface layers ground, 18- shallow rock soils, 19- drillings, 20- stablize ground, 21- springs, 22- welding positions, 23-
Steel disc, 24- connecting rods, 25- capacitance-type strain gauge power measuring sensors, 26- top crowns, 27- bottom crowns, 28- telescopics.
Specific embodiment
To make the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of scalable compound anchor system based on condenser type stress measurement.
As shown in Figure 1, Figure 2 and Figure 3, which includes anchor head section 13, free segment 12 and anchoring section 11, and anchor head section 13 includes
Head protector 1, fastener 2, bearing plate 3, anchoring part 4 and waist rail 5, free segment 12 include telescopic 28, casing 7 and grout stop 15, anchor
Gu section 11 is equipped with reinforcing bar 6 and drilling 19；Wherein, there are capacitance-type strain gauge power measuring sensor 25, spring 21 and welding in telescopic 28
Position 22；There are steel disc 23, connecting rod 24, top crown 26 and bottom crown 27, capacitance-type strain gauge in capacitance-type strain gauge power measuring sensor 25
Power measuring sensor 25 is fixed on reinforcing bar 6, and steel disc 23 is connected with connecting rod 24, and top crown 26 and bottom crown 27 are located at steel respectively
23 both ends of piece；Reinforcing bar 6 runs through anchor head section 13, free segment 12 and anchoring section 11, and anchor head section 13 is connected certainly by anchoring part 4 and waist rail 5
By section 12, free segment 12 connects anchoring section 11 by grout stop 15, and anchoring section 11 is located in deep stability ground 20, free segment 12
In shallow rock soil 18, anchor head section 13 is located at outside surface layer ground 17, and free segment 12 and anchoring section 11 form anchoring body 8, anchor
Solid 8 is inserted into retaining structure 9, and anchoring body 8 is slided along potential water use 10.
As shown in Figure 1, head protector 1 is mounted on outside fastener 2, fastener 2 is mounted on bearing plate 3, and bearing plate 3 is installed
On anchoring part 4, anchoring part 4 is mounted on waist rail 5.Potential water use 10 is in 45 ° with retaining structure 9.
As shown in Fig. 2, anchoring section 11 is arranged in deep stability ground 20, reinforcing bar 6 passes through binding agent 16 in anchoring section 11
The anchor pole end and deep stability ground 20 for making anchoring section 11 are bonded together, so as to make shallow rock soil 18 and deep stability ground
20 reinforce together.
Reinforcing bar 6 is divided into front and rear two sections in anchor head section 13 and 12 junction of free segment, is equipped with and stretches between front and rear two sections of reinforcing bar 6
Contract set 28, and the spring 21 in telescopic 28 welds together respectively with front and rear two sections of reinforcing bars 6, leading portion reinforcing bar and deep stability ground
20 are bonded together, and the tail portion of back segment reinforcing bar is fixed by anchor head section 13.
In actual application, the Specific construction flow of the system is as follows：
(1) it drills：According to designing scheme and field geology conditions, suitable drilling machine is selected, is drilled in rock mass layer
19 construction.
(2) making of the body of rod：A kind of scalable compound anchor system based on condenser type stress measurement by anchoring section 11,
Free segment 12 and anchor head section 13 form.Anchor rod body is welded by spring 21 and front and rear section reinforcing bar 6, and the body of rod is surrounded by set
Pipe 7, according to anchoring type, anchor head section 13 selects different fasteners 2.
(3) it anchors：After the body of rod completes, the body of rod is put into drilling 19, slip casting then is carried out to anchoring section 11.
(4) anchor pole tensioning：When binding agent Final 16 degree reaches prescribed strength in anchoring section 11, tensioning lock is carried out to the body of rod
It is fixed, under the conditions of special Rock And Soil, repeatedly stretching can be carried out.
(5) school zero：After rock bolt, spring has certain amount of tension, is needed at this time by capacitance-type strain gauge power measuring sensor
School zero.
(6) reading is monitored：The pressure change of the stress and country rock suffered by anchor pole is observed by reading, so as to take in time
Measure excludes dangerous situation.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of scalable compound anchor system based on condenser type stress measurement, it is characterised in that：Including anchor head section (13),
Free segment (12) and anchoring section (11), anchor head section (13) including head protector (1), fastener (2), bearing plate (3), anchoring part (4) and
Waist rail (5), free segment (12) include telescopic (28), casing (7) and grout stop (15), anchoring section (11) equipped with reinforcing bar (6) and
It drills (19)；Wherein, there are capacitance-type strain gauge power measuring sensor (25), spring (21) and welding position (22) in telescopic (28)；
There are steel disc (23), connecting rod (24), top crown (26) and bottom crown (27), condenser type in capacitance-type strain gauge power measuring sensor (25)
Stress measuring sensor (25) is fixed on reinforcing bar (6), and steel disc (23) is connected with connecting rod (24), top crown (26) and bottom crown
(27) it is located at steel disc (23) both ends respectively；Reinforcing bar (6) is through anchor head section (13), free segment (12) and anchoring section (11), anchor head section
(13) free segment (12) is connected by anchoring part (4) and waist rail (5), free segment (12) connects anchoring section by grout stop (15)
(11), anchoring section (11) is in deep stability ground (20), and free segment (12) is in shallow rock soil (18), anchor head section (13)
External positioned at surface layer ground (17), free segment (12) and anchoring section (11) composition anchoring body (8), anchoring body (8) are inserted into supporting and retaining system knot
In structure (9), anchoring body (8) is slided along potential water use (10).
2. the scalable compound anchor system according to claim 1 based on condenser type stress measurement, it is characterised in that：
The head protector (1) is external mounted on fastener (2), and fastener (2) is on bearing plate (3), and bearing plate (3) is mounted on anchor
On seat (4), anchoring part (4) is on waist rail (5).
3. the scalable compound anchor system according to claim 1 based on condenser type stress measurement, it is characterised in that：
The anchoring section (11) is arranged in deep stability ground (20), and reinforcing bar (6) makes anchor by binding agent (16) in anchoring section (11)
Gu the anchor pole end of section (11) is bonded together with deep stability ground (20), so as to make shallow rock soil (18) and deep stability rock
Native (20) reinforce together.
4. the scalable compound anchor system according to claim 1 based on condenser type stress measurement, it is characterised in that：
The reinforcing bar (6) is divided into front and rear two sections in anchor head section (13) and free segment (12) junction, is set between front and rear two sections of reinforcing bar (6)
Have telescopic (28), the inner spring (21) of telescopic (28) welds together respectively with front and rear two sections of reinforcing bars (6), leading portion reinforcing bar with
Deep stability ground (20) is bonded together, and the tail portion of back segment reinforcing bar is fixed by anchor head section (13).
5. the scalable compound anchor system according to claim 1 based on condenser type stress measurement, it is characterised in that：
The potential water use (10) is with retaining structure (9) in 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179186.XA CN108252731B (en) | 2018-03-05 | 2018-03-05 | Telescopic composite anchoring system based on capacitive stress measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179186.XA CN108252731B (en) | 2018-03-05 | 2018-03-05 | Telescopic composite anchoring system based on capacitive stress measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108252731A true CN108252731A (en) | 2018-07-06 |
| CN108252731B CN108252731B (en) | 2024-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810179186.XA Active CN108252731B (en) | 2018-03-05 | 2018-03-05 | Telescopic composite anchoring system based on capacitive stress measurement |
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| CN (1) | CN108252731B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417300A (en) * | 2021-07-15 | 2021-09-21 | 青岛业高建设工程有限公司市北分公司 | Slope support system and construction method thereof |
| CN114527504A (en) * | 2022-02-28 | 2022-05-24 | 东北大学 | Drilling embedded type sensor installation, fixation and recovery integrated device |
| WO2024064974A1 (en) * | 2022-09-20 | 2024-03-28 | Innovative Mining Products (Pty) Ltd | A displacement measuring device for installation in a rock hole |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417300A (en) * | 2021-07-15 | 2021-09-21 | 青岛业高建设工程有限公司市北分公司 | Slope support system and construction method thereof |
| CN114527504A (en) * | 2022-02-28 | 2022-05-24 | 东北大学 | Drilling embedded type sensor installation, fixation and recovery integrated device |
| WO2024064974A1 (en) * | 2022-09-20 | 2024-03-28 | Innovative Mining Products (Pty) Ltd | A displacement measuring device for installation in a rock hole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108252731B (en) | 2024-03-22 |
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