CN201221943Y - Matching hook of tunnel converge instrument for soft rock type wall rock - Google Patents
Matching hook of tunnel converge instrument for soft rock type wall rock Download PDFInfo
- Publication number
- CN201221943Y CN201221943Y CNU2008200676635U CN200820067663U CN201221943Y CN 201221943 Y CN201221943 Y CN 201221943Y CN U2008200676635 U CNU2008200676635 U CN U2008200676635U CN 200820067663 U CN200820067663 U CN 200820067663U CN 201221943 Y CN201221943 Y CN 201221943Y
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- CN
- China
- Prior art keywords
- hook
- rock
- hooker
- soft
- wall rock
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- Expired - Fee Related
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model relates to a tunnel convergence indicator matching hooker that is applied to the soft-rock-type wall rock, which is characterized in that the matching hooker is provided with a straight rod with an overhead hook; one end of the straight rod is provided with an anchoring section (1) with notch (8), and the middle part of the straight rod is provided with a transitional section (2), and the other end is provided with a hooker (3); the hooker (3) is formed by an overhead-hook straight rod (7) and a transitional-section (2) with acute angle. With the matching hooker, the soft-rock engineering wall rock (class IV, class V and class VI) has the special equipped hooker, thereby overcoming the weakness that the connection position of the buckling rope and the hooker is easily changed and uncertain, and can specify a definite location precisely and can penetrate deeply in the soft wall rock, and can overcome the influence of the gap between the spraying layer and the wall rock, and can directly measure the deformation of the wall rock, and can improve the measurement precision and accuracy.
Description
Technical field
The utility model relates to tunnel monitoring measurement equipment, is a kind of supporting hook of tunnel convergence instrument that is used for soft rock type country rock specifically.
Background technology
In constructing tunnel, the subtle change of tunnel excavation section, stable directly related with Tunnel Engineering, press the construction of New Austrian Tunneling Method design and construction, must study the development of deformation rule of tunnel surrounding and supporting, determine the opportunity of reasonable supporting parameter and lining construction, often use the tunnel convergence instrument to come engineering surrounding rock is tested.Cooperate the use of tunnel convergence instrument not have special-purpose hook at present, and use expansion bolt to be used as the test of tunnel convergence instrument with linking up with.Generally speaking, the standard that tends towards stability of judging country rock be the pace of change of tunnel horizontal shift less than 0.15～0.20mm/d (the horizontal shift pace of change that is every day is less than 0.15～0.20 millimeter), measuring accuracy is 0.1 millimeter.And the arc hook of expansion bolt tail end commonly used in use, and lanyard and arc hook link position are difficult for determining, and change easily, may bring very big measuring error thus.As the radius when the circular arc hook is 20mm, when the contact position of lanyard and arc hook changed in 10 ° of scopes, systematic error was with 0.30mm, the permissible value 0.2mm/d that tends towards stability greater than country rock, have a strong impact on the accuracy of measurement, work brings puzzlement to monitoring measurement.
For IV, V, VI level weak surrounding rock, the concrete thickness on the low side of its preliminary bracing generally can surpass 15cm, be subjected to the influence of sprayed concrete thickness, the gap that may have 0.5cm～2cm between its local spray-up and the country rock, if use common expansion bolt, because the length of bolt part is less than jetting thickness, can only be fixed in the spray-up, when spray-up and country rock have the space, the distortion of spray-up and country rock is asynchronous, the distortion of country rock can't embody from bolt, may cause the initial change of country rock to predict from convergence instrument, thereby influence is to the judgement of stability of surrounding rock.
Summary of the invention
The purpose of this utility model provides the supporting hook of tunnel convergence instrument that is used for soft rock type country rock that a kind of lanyard is determined with the hook link position and the deep enough soft country rock of energy uses.
The described supporting hook of tunnel convergence instrument that is used for soft rock type country rock is the bonding anchor pole straight-bar of a band barb, and the one end is the anchoring section of band indentation, and the centre is a transition section, and the other end is hook, and described hook is made of barb straight-bar and transition section folder acute angle.
Described anchoring section length is 20 centimetres, and width of nick is 1～2 millimeter, 2 millimeters of spacings, and the horizontal length of barb straight-bar is 3～4 centimetres, the hook top is 20～38 centimetres to the length of anchoring section; The folded acute angle of barb straight-bar and transiting rod is 30 degree～50 degree.
The utility model makes soft rock type country rock (IV class, V class, VI class) that special-purpose assorted hook arranged, lanyard and hook link position mutability have been stopped and uncertain defective, can pinpoint and can deep enough soft country rock, directly predict the distortion of country rock, improved measuring accuracy.
Description of drawings
Fig. 1 is the utility model structural representation, and Fig. 2 is to use the example structure synoptic diagram.
Among the figure: the 1-anchoring section, the 2-transition section, the 3-hook, 4-anchoring section length, 5-hook top is to the length of anchoring section, 6-barb straight-bar horizontal length, 7-barb straight-bar, 8-indentation, 9-spray-up, 10-anchoring agent, the soft country rock of 11-.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified: the supporting hook of tunnel convergence instrument that is used for soft rock type country rock as shown in fig. 1, it is characterized in that: described supporting hook is the straight-bar of a band barb, the one end is the anchoring section 1 of band indentation 8, the centre is a transition section 2, the other end is hook 3, and described hook 3 is made of barb straight-bar 7 and transition section 2 folder acute angles.
Because the tail end of hook 3 is acute angle, just is positioned to the vertex position of acute angle after lanyard is stretching, the uncertain measuring error of bringing of lanyard fixed position of former arc hook can not appear, improved work efficiency.
Described anchoring section 1 length is 20 centimetres, and indentation 8 degree of depth are 1～2 millimeter, 2 millimeters of spacings, and the horizontal length 6 of barb straight-bar 7 is 3～4 centimetres, the hook top is 20～38 centimetres to the length 5 of anchoring section; Barb straight-bar 7 is 30 degree～50 degree with transiting rod 2 folded acute angles.
As shown in Figure 2, anchoring section 1 gos deep into 20cm in the soft country rock 11, use anchoring agent 10 fixing, the transiting rod 2 of supporting hook passes the thick spray-up of 15～30cm 9, with the gap of spray-up 9 with country rock 0.5cm～2cm, hook 3 is exposed, the lanyard of tunnel convergence instrument hangs on the acute angle of hook 3, the distortion of directly measuring country rock by the supporting hook that is stabilized on the soft country rock 11, cross the labile factor that spray-up 9, spray-up and country rock gap, circular arc hook etc. bring, thereby can directly accurately measure the distortion real conditions of country rock.
Claims (2)
1. supporting hook of tunnel convergence instrument that is used for soft rock type country rock, it is characterized in that: described supporting hook is the straight-bar of a band barb, the one end is the anchoring section (1) of band indentation (8), the centre is transition section (2), the other end is hook (3), and described hook (3) is made of barb straight-bar (7) and transition section (2) folder acute angle.
2. the supporting hook of tunnel convergence instrument that is used for soft rock type country rock according to claim 1, it is characterized in that: described anchoring section (1) length is 20 centimetres, indentation (8) degree of depth is 1～2 millimeter, 2 millimeters of spacings, the horizontal length (6) of barb straight-bar (7) is 3～4 centimetres, and the hook top is 20～38 centimetres to the length (5) of anchoring section; Barb straight-bar (7) is 30 degree～50 degree with the folded acute angle of transiting rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200676635U CN201221943Y (en) | 2008-06-06 | 2008-06-06 | Matching hook of tunnel converge instrument for soft rock type wall rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200676635U CN201221943Y (en) | 2008-06-06 | 2008-06-06 | Matching hook of tunnel converge instrument for soft rock type wall rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221943Y true CN201221943Y (en) | 2009-04-15 |
Family
ID=40575449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200676635U Expired - Fee Related CN201221943Y (en) | 2008-06-06 | 2008-06-06 | Matching hook of tunnel converge instrument for soft rock type wall rock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201221943Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494007A (en) * | 2011-12-30 | 2012-06-13 | 山东大学 | Auxiliary device for anti-destructive monitoring and measurement of convergence points in tunnel engineering and method for burying auxiliary device |
| CN103411593A (en) * | 2013-08-16 | 2013-11-27 | 中国水电顾问集团中南勘测设计研究院 | Convergence measuring peg |
-
2008
- 2008-06-06 CN CNU2008200676635U patent/CN201221943Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494007A (en) * | 2011-12-30 | 2012-06-13 | 山东大学 | Auxiliary device for anti-destructive monitoring and measurement of convergence points in tunnel engineering and method for burying auxiliary device |
| CN103411593A (en) * | 2013-08-16 | 2013-11-27 | 中国水电顾问集团中南勘测设计研究院 | Convergence measuring peg |
| CN103411593B (en) * | 2013-08-16 | 2015-09-16 | 中国电建集团中南勘测设计研究院有限公司 | Convergence peg |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 Termination date: 20140606 |