CN202418148U - Auxiliary device for monitoring and measuring convergence measuring point in tunnel CRD method construction - Google Patents
Auxiliary device for monitoring and measuring convergence measuring point in tunnel CRD method construction Download PDFInfo
- Publication number
- CN202418148U CN202418148U CN2011205685685U CN201120568568U CN202418148U CN 202418148 U CN202418148 U CN 202418148U CN 2011205685685 U CN2011205685685 U CN 2011205685685U CN 201120568568 U CN201120568568 U CN 201120568568U CN 202418148 U CN202418148 U CN 202418148U
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- measuring point
- connecting rod
- convergence
- tunnel
- rod
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Abstract
The utility model relates to an auxiliary device for monitoring and measuring a convergence measuring point in tunnel CRD method construction. The device comprises an embedded fixed rod, a screw cap gasket, a fixed screw cap, a measuring point connecting rod and a measuring point hanger, wherein an expansion bolt head and an expansion sheet are arranged at one end of the embedded fixed rod; the screw cap gasket and the fixed screw cap are arranged at the other end of the embedded fixed rod; the measuring point hanger is arranged at one end of the measuring point connecting rod and is used for connecting a steel rule convergence gauge during measurement; and a threaded calipers anti-dropping groove is formed at the other end of the measuring point connecting rod. During use, the expansion bolt head at one end of the embedded fixed rod is placed in a drill hole and the other end of the embedded fixed rod is knocked, so that the expansion sheet is expanded to extrude the surrounding rock and the embedded fixed rod can be fixed in the tunnel side wall; the other end of the measuring point connecting rod is provided with thread and can be tightly connected with the threaded calipers anti-dropping groove; and the measuring point hanger arranged at one end of the measuring point connecting rod is used for connecting a convergence hook on the steel rule convergence gauge during measurement. The device has the advantages of low cost of materials, simple arrangement method, capacity of effectively preventing the measuring point from being damaged and the like.
Description
Technical field
The utility model relates to the monitoring measurement field, monitoring measurement convergence measuring point auxiliary device in the construction of specifically a kind of tunnel CRD method.
Background technique
The monitoring measurement technology is the important component part of modern tunnel construction; It is the important means of monitoring country rock and structure stability; When carrying out tunnel construction, especially above surrounding rock tunnel construction monitoring measurement is absolutely necessary for the IV level, and it is to guarantee the preliminary bracing safe and reasonable; Confirm that secondary lining executes the critical process of the time of work, and each working procedure in the hole is connected important directive significance is arranged.Revise design parameter through monitoring measurement and timely feedback information, with reach reasonable in design, the purpose efficiently of constructing.After the underground cavern excavation, country rock periphery convergence and vault sink be the reflection country rock with support system mechanics condition the most directly, the most tangible physical quantity, monitor the steady state that can understand country rock and support system through country rock convergence and vault sinking.Monitoring measurement can be in the work progress in tunnel; Measurement to country rock and supporting, lining cutting force and deformation state; Through the analysis of measurement being judged the stability and the stress-strain state of surrounding rock supporting, judge whether tunnel and country rock are stablized and safety, and proofread and correct, revise the design and guidance construction thus; Evaluation preliminary bracing and two lining designed rationality, thereby guiding construction, Feedback Design and design is optimized.
Surrouding rock deformation data when excavating in order in time to obtain face, the monitoring point often is laid in apart from excavated section nearby, and the convergence measuring point hook of in the past laying; Expose outside abutment wall greatly; The drawback of doing like this is, because the explosion of face, rubble might be pounded the measuring point of laying; Perhaps remove the slag car and forklift and can run into measuring point, thereby cause the distortion of measuring point hook.
The model utility content
The purpose of the utility model is for overcoming the deficiency of above-mentioned existing technology, provide a kind of simple in structure, cost is low, can effectively prevent monitoring measurement convergence measuring point auxiliary device in the CRD method construction of the ruined tunnel of measuring point.
For realizing above-mentioned purpose, the utility model adopts following technical proposals:
Monitoring measurement convergence measuring point auxiliary device in the CRD method construction of a kind of tunnel; Comprise embedded fixing rod, cap colalr gasket, hold-doun nut, measuring point connecting rod, measuring point hook, said embedded fixing rod one end is the EXPANSION ANCHOR BOLTS head, which is provided with intumescent sheet; The other end is a threaded end; Be rotary with cap colalr gasket and hold-doun nut on it, measuring point connecting rod one end is provided with and is used to connect the measuring point hook that the steel ruler contraction meter is measured, the other end be with embedded fixing rod on the screw callipers dislocation preventing slot of threads engaged.
Screw thread form in the screw callipers dislocation preventing slot of said measuring point connecting rod one end is consistent with the shape of embedded fixing rod threaded end, guarantees each interior voidlessness of screw callipers dislocation preventing slot when finishing that connects.Embedded fixing rod is wanted the least possible exposing beyond tunnel side wall satisfy connecting when finishing in the screw callipers dislocation preventing slot under the void-free prerequisite.
The utility model in use; Among the country rock of elder generation with the EXPANSION ANCHOR BOLTS one end insertion tunnel-side of embedded fixing rod; Knock the end intumescent sheet is fully expanded, tentatively be fixed on country rock inside, tighten the nut of the other end then; Make embedded fixing rod fully fixing, and guarantee the least possible exposing beyond tunnel side wall of embedded fixing rod.During measurement, when measuring earlier, the measuring point connecting rod is taken out, and make and be provided with screw callipers dislocation preventing slot one end and fully be connected, and guarantee to connect the interior voidlessness of screw callipers dislocation preventing slot when finishing with embedded fixing rod.Can the measurement hook of steel ruler contraction meter be connected with the end that the measuring point connecting rod is provided with the measuring point hook then, carry out convergence measurement.
When the utility model can be avoided the face explosion, rubble was pounded the measuring point of laying, and perhaps removed the slag car and forklift and can run into measuring point, thereby cause the problem of measuring point hook distortion.It is low to the utlity model has the Manufacturing material cost, and distribution method is simple, advantage such as can effectively prevent that measuring point is destroyed.
Description of drawings
Fig. 1 is the utility model structural representation;
1. embedded fixing rods wherein, 2. measuring point connecting rod, 3. intumescent sheet, 4. cap colalr gasket, 5. measuring point hook, 6. hold-doun nut, 7. screw callipers dislocation preventing slot.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
As shown in Figure 1; Monitoring measurement convergence measuring point auxiliary device in the CRD method construction of a kind of tunnel, embedded fixing rod 1 one ends are the EXPANSION ANCHOR BOLTS head, which is provided with intumescent sheet 3; Put it in the boring during use; Knock the other end and make intumescent sheet 3 expand change greatly, the extruding country rock just can be fixed among the tunnel side wall; The other end is provided with cap colalr gasket 4 and hold-doun nut 6, is used for further fixedly embedded formula fixing rod 1, and measuring point connecting rod 2 one ends are provided with measuring point hook 5, is used to connect the steel ruler contraction meter and measures, and the other end is a screw callipers dislocation preventing slot 7.
Screw thread form in the measuring point connecting rod 2 wants consistent with the shape of embedded fixing rod 1 threaded end, voidlessness in the screw callipers dislocation preventing slot 7 when the each connection of assurance finishes.Embedded fixing rod 1 is wanted the least possible exposing beyond tunnel side wall satisfy connecting when finishing in the screw callipers dislocation preventing slot 7 under the void-free prerequisite.
The convergence measurement method is following:
(1) EXPANSION ANCHOR BOLTS one end of embedded fixing rod 1 is inserted among the country rock of tunnel-side, knock the end intumescent sheet 3 is fully expanded, tentatively be fixed on country rock inside;
(2) tighten the hold-doun nut 6 of the other end, make embedded fixing rod 1 fully be fixed on country rock inside, and guarantee embedded fixing rod 1 the least possible exposing beyond tunnel side wall;
When (3) measuring, measuring point connecting rod 2 is taken out, and make and be provided with screw callipers dislocation preventing slot 7 one ends and fully be connected with embedded fixing rod 1, and screw callipers dislocation preventing slot 7 interior voidlessnesss when guaranteeing that connection finishes;
(4) the measurement hook with the steel ruler contraction meter is connected with the end that measuring point connecting rod 2 is provided with measuring point hook 5, carries out convergence measurement;
(5) after measurement finishes, measuring point connecting rod 2 is unloaded, packs up.
Claims (2)
1. monitoring measurement convergence measuring point auxiliary device during a tunnel CRD method is constructed; It is characterized in that: comprise embedded fixing rod, cap colalr gasket, hold-doun nut, measuring point connecting rod, measuring point hook; Embedded fixing rod one end is the EXPANSION ANCHOR BOLTS head; Which is provided with intumescent sheet, the other end is a threaded end, is rotary with cap colalr gasket and hold-doun nut on it; Measuring point connecting rod one end is provided with and is used to connect the measuring point hook that the steel ruler contraction meter is measured, the other end be with embedded fixing rod on the screw callipers dislocation preventing slot of threads engaged.
2. monitoring measurement convergence measuring point auxiliary device in a kind of tunnel according to claim 1 CRD method construction, it is characterized in that: the screw thread form in the screw callipers dislocation preventing slot of said measuring point connecting rod one end is consistent with the shape of embedded fixing rod threaded end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205685685U CN202418148U (en) | 2011-12-30 | 2011-12-30 | Auxiliary device for monitoring and measuring convergence measuring point in tunnel CRD method construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205685685U CN202418148U (en) | 2011-12-30 | 2011-12-30 | Auxiliary device for monitoring and measuring convergence measuring point in tunnel CRD method construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418148U true CN202418148U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205685685U Expired - Lifetime CN202418148U (en) | 2011-12-30 | 2011-12-30 | Auxiliary device for monitoring and measuring convergence measuring point in tunnel CRD method construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493989A (en) * | 2011-12-30 | 2012-06-13 | 山东大学 | Auxiliary device for monitoring and measuring convergence points in tunnel construction by cross diaphragm (CRD) method and method for burying auxiliary device |
| CN108534701A (en) * | 2018-06-25 | 2018-09-14 | 中国电建集团中南勘测设计研究院有限公司 | The photogrammetric structure of cavern's convergence monitoring and method |
-
2011
- 2011-12-30 CN CN2011205685685U patent/CN202418148U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493989A (en) * | 2011-12-30 | 2012-06-13 | 山东大学 | Auxiliary device for monitoring and measuring convergence points in tunnel construction by cross diaphragm (CRD) method and method for burying auxiliary device |
| CN108534701A (en) * | 2018-06-25 | 2018-09-14 | 中国电建集团中南勘测设计研究院有限公司 | The photogrammetric structure of cavern's convergence monitoring and method |
| CN108534701B (en) * | 2018-06-25 | 2024-04-16 | 中国电建集团中南勘测设计研究院有限公司 | Structure and method for monitoring photogrammetry by converging cavern |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |