CN204882550U - Bury tunnel measuring device deeply - Google Patents
Bury tunnel measuring device deeply Download PDFInfo
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- CN204882550U CN204882550U CN201520650731.0U CN201520650731U CN204882550U CN 204882550 U CN204882550 U CN 204882550U CN 201520650731 U CN201520650731 U CN 201520650731U CN 204882550 U CN204882550 U CN 204882550U
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Abstract
The utility model discloses a bury tunnel measuring device deeply. Adopting the press to carry out hierarchical loading at the model top to current rock mass simulation experiment device and taking place to destroy until the tunnel, the size is less and lack monitoring technology's defect, the utility model provides a bury tunnel measuring device deeply. This product is including load loading device and tunnel model, load loading device includes that the rectangle retrains the frame, the fixed jack in rectangle restraint frame base, and the piece is lifted towards rectangle restraint frame center in the jack top, the tunnel model is the rectangle plate of arranging in rectangle restraint frame, retrained frame topside, rectangle restraint frame side with the rectangle respectively, passed the dull and stereotyped quiet hookup of power in its four weeks, tunnel model middle part open have with tunnel model plane vertically through -hole. Arrange strain sensor around the through -hole. The experiment that this product can be used for studying different holes shape tunnel model failure mechanisms is develoied, and the design is succinct, the processing cost is low, it is strong to be suitable for the practicality.
Description
Technical field
The utility model relates to a kind of measurement mechanism, particularly relates to a kind of deep-lying tunnel measurement mechanism, belongs to technical field of mechanical equipment.
Background technology
Rock majority is heterogeneity and anisotropic, comprises various rock and architectonic rock mass is then more complicated.In underground rock, owing to there is the surrounding rock body that stress state changes by excavation affects, be called country rock.In the research field of stress field of the surrounding rock and displacement field, mathematics mechanics method can only provide Theory Solution for the underground works of simple shape (circular or oval etc. tunnel), and many analytical predictions are mostly from the achievement of field measurement and modeling effort.Tunnel model test has along with the renewal of science and technology and more improves and senior form, and add these class methods and have the advantage that intuitive and whole audience pointwise provide conclusion, thus rock simulation research and field measurement develop by leaps and bounds and become the focus of research.
In prior art, (the Li Yuanxin such as Li Yuanxin, Zhu Zheming, Zhu Zheming, Liu Kai etc. direction of check is to the research [J] of Tunnel Stability affecting laws. rock-soil mechanics, 2014,35 (supplementary issues 1): the sand-cement slurry that utilizes 189 ~ 194) proposed has the stalk arched tunnel model of different angle theta to study tunnel deformation failure law for raw material is made into.It is with stalk arched tunnel for research object, and only carry out uniaxial compression test, namely tunnel only bears vertical load.Start after test model being seated in equipment middle to load, adopt the mode of hierarchical loading, with 150 be ladder multistage loadings until test specimen destroys, loading speed selection 15kN/s.This technology has only been carried out stalk arched tunnel model and has been tested, the tunnel model of different section form is not contrasted, namely lacks corresponding different section form Wall Rock of Tunnel stress and displacement distribution situation and different section form to the research of Wall Rock of Tunnel stability influence.Zheng Ying people (Zheng Yingren. tunnel failure mechanism and design and calculation method [J]. the underground space and engineering journal, 2010,6 (supplementary issues 2): the tunnel model test 1521 ~ 1532) carried out adopts indoor model test and numerical analysis method, model test adopts homemade model test equipment, and the soil body in test model is of a size of 40cm × 52cm × 15cm (long × high × thick).Test adopts pressing machine to carry out hierarchical loading until tunnel destroys at model top.The size of this test tunnel model is relatively little, lacks some corresponding monitoring technology in addition.
Utility model content
The purpose of this utility model is exactly for the deficiencies in the prior art, provides a kind of for the experimental provision observed with measure deep-lying tunnel stress and deformation feature and process.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of deep-lying tunnel measurement mechanism, is characterized in that: comprise load on device and tunnel model; Described load on device comprises rectangle constraint frame, and lifting jack is fixed on rectangle constraint frame base, and part is lifted towards rectangle constraint frame center in lifting jack top; Lifting jack top is lifted part top and is connected with power transmission flat board is quiet; Described tunnel model is arranged in the rectangle plate in rectangle constraint frame, described tunnel model surrounding lateral surface retrains frame top margin medial surface with rectangle respectively, rectangle retrains frame side medial surface, dull and stereotyped upper side is quiet connects in power transmission, through hole is had, through hole and tunnel model plane orthogonal in the middle part of described tunnel model.
Above-mentioned deep-lying tunnel measurement mechanism comprises load on device and monitoring tunnel model two parts.Load on apparatus main body is rectangle constraint frame, and the tunnel model that rectangle constraint frame is opposite to wherein plays support effect of contraction.Rectangle constraint frame bottom fixes lifting jack, lifting jack in working order under upwards to lift its upper power transmission connected dull and stereotyped on top, dull and stereotyped to tunnel model applying load upwards by power transmission.The effect of power transmission flat board is to ensure tunnel model uniform stressed, power transmission in loading procedure.Through hole simulation tunnel.Applied the deformation, fission etc. on upwards load situation lower through-hole surface by observation lifting jack, strain and the destructive process of Wall Rock of Tunnel can be studied.For ensureing that experiment is carried out, lifting jack specification is can select flexibly according to the condition of simulation.Lifting jack specification can be selected to be thrust 30 tons, working pressure 63Mpa, stroke 150mm, bar footpath 70mm.
With the critical depth in tunnel for index, can encircle as principle by mineralization pressure with tunnel surrounding, generally tunnel is divided into deep tunnel and shallow tunnel.After the former refers to tunnel excavation, the tunnel of country rock body general energy mineralization pressure arch.The utility model product design, by selecting the lifting jack of larger row journey to realize the abundant simulation to the large ground pressure of tunnel under buried condition at load on device, is a kind of specially for the experimental provision that deep-lying tunnel is measured.
Further, according to tunnel conventional shape, the through hole of above-mentioned deep-lying tunnel measurement mechanism is arch door shape or circle.
Further, above-mentioned deep-lying tunnel measurement mechanism, tunnel model surface is around via arrangement strain transducer, and strain transducer is connected with Dynamic Signal continuous detecting end by data line, in order to measure and to record surrouding rock deformation signal data.Under decision design, strain transducer is arranged in row, and strain transducer row are mutually vertical, and often row arrange at least three strain transducers, namely arrange three measurement points.Under usual conditions, strain transducer row retrain frame base and rectangle respectively, and to retrain frame side parallel with rectangle.
Further, above-mentioned deep-lying tunnel measurement mechanism, also comprises imaging device, imaging device camera towards tunnel model vias place, to realize directly accurately observing and record through hole and Surrounding Rock Movement and destructive process.
Compared with prior art, the invention has the beneficial effects as follows: (1) provides a kind of deep-lying tunnel measurement mechanism, this system specific aim can solve the widely different problem of the mechanism destroyed after tunnel under different section form loads, carries out for the test studying different holes shape tunnel model failure mechanism.(2) this device can be used in observation different section form Wall Rock of Tunnel stress and displacement distribution situation, the impact on Wall Rock of Tunnel stability under research tunnel different section form, the failure mechanism of research tunnel country rock under overload condition.(3) apparatus design is succinct, processing cost is low, it is practical to be suitable for.
Accompanying drawing explanation
Fig. 1-1 is deep-lying tunnel measurement mechanism forward structure schematic diagram.
Fig. 1-2 is deep-lying tunnel measurement mechanism cross section structure schematic diagram.
Fig. 1-3 is tunnel model forward structure schematic diagram (showing through hole arch door shape).
Fig. 1-4 is tunnel model cross section structure schematic diagram (showing through hole arch door shape).
Fig. 1-5 is that schematic diagram arranged by strain transducer.
Fig. 1-6 is strain transducer structural representations.
Fig. 2-1 is the deep-lying tunnel measurement mechanism cross section structure schematic diagram of band imaging device.
Fig. 3-1 is tunnel model forward structure schematic diagram (showing that through hole is circular).
Fig. 3-2 is tunnel model cross section structure schematic diagram (showing that through hole is circular).
Figure notation in accompanying drawing is respectively:
Dull and stereotyped 2 tunnel model 21 through hole 22 strain transducer 3 imaging devices of 1 load on device 11 rectangle constraint frame 12 lifting jack 13 power transmission
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is further described.
Embodiment one
As shown in Fig. 1-1 ~ Fig. 1-6, process a kind of deep-lying tunnel measurement mechanism.
Fig. 1-1 is deep-lying tunnel measurement mechanism forward structure schematic diagram; Fig. 1-2 is that deep-lying tunnel measurement mechanism is along middle part dotted line cutaway structural representation; Fig. 1-3 is tunnel model forward structure schematic diagram (showing through hole arch door shape); Fig. 1-4 is tunnel model cross section structure schematic diagram (showing through hole arch door shape).Deep-lying tunnel measurement mechanism comprises load on device 1 and tunnel model 2.Load on device 1 comprises rectangle constraint frame 11, and lifting jack 12 is fixed on rectangle constraint frame base, and lifting jack 12 pushes up lifts part towards rectangle constraint frame 11 center; Lifting jack 12 pushes up act part top and connects with power transmission flat board 13 is quiet.Tunnel model 2 is arranged in the rectangle plate in rectangle constraint frame 11, and tunnel model 2 surrounding lateral surface retrain frame top margin medial surface with rectangle respectively, rectangle retrains frame side medial surface, 13 upper sides are quiet connects for power transmission flat board; Through hole 21 is had, through hole 21 and tunnel model 2 plane orthogonal in the middle part of tunnel model 2.Through hole 21 is arch door shapes.
Fig. 1-5 is that schematic diagram arranged by strain transducer 22.Strain transducer 22 is arranged around through hole 21 in tunnel model 2 surface.Strain transducer 22 is arranged in row, and strain transducer 22 arranges mutually vertical, and often row arrange at least three strain transducers 22.In present embodiment, arrange that two row strain transducers 22 arrange, strain transducer 22 arranges and retrains frame base and rectangle respectively with rectangle to retrain frame side parallel.
Fig. 1-6 is strain transducer structural representations.Strain transducer 22 is resistance strain gages.Be made up of substrate 221, sensitive grid 222, lead-in wire 223.The principle of work of resistance strain gage is based on " strain effect ", when namely conductor or semiconductor material produce mechanically deform under the effect of external force, and the phenomenon that its resistance value changes accordingly.Sensitive grid 222 is the monofilament or palisade body made with tinsel or semiconductor material, is non-sensitive part dependent variable being converted to resistance change.Lead-in wire 223 draws the thread of electric signal or ribbon conductor from sensitive grid 222.Substrate 221 is in order to protect sensitive grid 222, and the geometric configuration of anchor leg and relative position.
In present embodiment, rectangle constraint frame 11 is that H profile steel is welded, and tunnel model 2 is concrete casting injection formings.Lifting jack 12 thrust 30 tons, working pressure 63Mpa, stroke 150mm, bar footpath 70mm.
Embodiment two
As shown in Fig. 2-1, process a kind of deep-lying tunnel measurement mechanism.Itself and embodiment one something in common no longer repeat, and its difference is also to comprise imaging device 3.
Fig. 2-1 is the deep-lying tunnel measurement mechanism cross section structure schematic diagram of band imaging device.Deep-lying tunnel measurement mechanism also comprises imaging device 3, and imaging device 3 camera is towards tunnel model 2 through hole 21 tapping.
Embodiment three
As shown in Fig. 3-1 ~ Fig. 3-2, process a kind of deep-lying tunnel measurement mechanism.Itself and embodiment one or two something in common no longer repeat, and its difference is tunnel model through-hole structure.
Fig. 3-1 is tunnel model forward structure schematic diagram (showing that through hole is circular); Fig. 3-2 is tunnel model cross section structure schematic diagram (showing that through hole is circular).Through hole 21 is circular.
Claims (9)
1. deep-lying tunnel measurement mechanism, is characterized in that: comprise load on device (1) and tunnel model (2);
Described load on device (1) comprises rectangle constraint frame (11), and lifting jack (12) is fixed on rectangle constraint frame base, and lifting jack (12) top is lifted part and retrained frame (11) center towards rectangle; Lifting jack (12) top is lifted part top and is connected with power transmission flat board (13) is quiet;
Described tunnel model (2) is arranged in the rectangle plate in rectangle constraint frame (11), described tunnel model (2) surrounding lateral surface retrains frame top margin medial surface with rectangle respectively, rectangle retrains frame side medial surface, power transmission flat board (13) upper side is quiet connects, described tunnel model (2) middle part has through hole (21), through hole (21) and tunnel model (2) plane orthogonal.
2. device according to claim 1, is characterized in that: described lifting jack (12) thrust 30 tons, working pressure 63Mpa, stroke 150mm, bar footpath 70mm.
3. device according to claim 1 and 2, is characterized in that: described through hole (21) is arch door shape or circle.
4. device according to claim 3, is characterized in that: strain transducer (22) is arranged around through hole (21) in described tunnel model (2) surface.
5. device according to claim 4, is characterized in that: described strain transducer (22) is arranged in row, and strain transducer (22) row are mutually vertical, and often row arrange at least three strain transducers (22).
6. device according to claim 5, is characterized in that: described strain transducer (22) row retrain frame base and rectangle respectively, and to retrain frame side parallel with rectangle.
7. device according to claim 6, is characterized in that: described strain transducer (22) is resistance strain gage.
8. the device according to claim 1 or 2 or 4 or 5 or 6 or 7, it is characterized in that: also comprise imaging device (3), described imaging device (3) camera is towards tunnel model (2) through hole (21) tapping.
9. device according to claim 8, is characterized in that: described rectangle constraint frame (11) is that H profile steel is welded, and described tunnel model (2) is concrete casting injection forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520650731.0U CN204882550U (en) | 2015-08-26 | 2015-08-26 | Bury tunnel measuring device deeply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520650731.0U CN204882550U (en) | 2015-08-26 | 2015-08-26 | Bury tunnel measuring device deeply |
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| CN204882550U true CN204882550U (en) | 2015-12-16 |
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| CN201520650731.0U Expired - Fee Related CN204882550U (en) | 2015-08-26 | 2015-08-26 | Bury tunnel measuring device deeply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326431A (en) * | 2020-11-06 | 2021-02-05 | 四川大学 | Experimental device and experimental method for rock deformation and damage process |
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2015
- 2015-08-26 CN CN201520650731.0U patent/CN204882550U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326431A (en) * | 2020-11-06 | 2021-02-05 | 四川大学 | Experimental device and experimental method for rock deformation and damage process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20200826 |