CN205785621U - A kind of test the country rock pressure cell to complete-section tunnel boring machine shield extruding force - Google Patents
A kind of test the country rock pressure cell to complete-section tunnel boring machine shield extruding force Download PDFInfo
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- CN205785621U CN205785621U CN201620497194.5U CN201620497194U CN205785621U CN 205785621 U CN205785621 U CN 205785621U CN 201620497194 U CN201620497194 U CN 201620497194U CN 205785621 U CN205785621 U CN 205785621U
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- cup
- shaped base
- pressure transducer
- country rock
- lid
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses and a kind of test the country rock pressure cell to complete-section tunnel boring machine shield extruding force, by the bottom welding of cup-shaped base at shield outer surface, cup-shaped base is connected with wire bushing pipe, lid outward flange is had in one end of top annular lid, inside thread is had in lid outward flange, outside screw is had in cup-shaped base upper end, pressure transducer is put in cup-shaped base, the pressure transducer cable carried by pressure transducer passes from cup-shaped base upper recess, wire bushing pipe on set around pressure transducer cable, again by annular lid lid, by threaded between cup-shaped base and annular lid, the pressure transducer pressure contact that pressure transducer carries simultaneously exposes from annular lid center hole.Simple in construction, easy to make, substantially increase and be mounted to power and long-term fastness, it is achieved thereby that the accurate measurement that country rock is to TBM shield extruding force.
Description
Technical field
This utility model relates to TBM tunnel surrounding and shield interaction test and analysis technical field, is more particularly to the device that TBM shield extruding force is tested by a kind of country rock, it is possible to be applied to underground engineering wall rock and steel supporting construction interphase interaction stress test.
Background technology
TBM (complete-section tunnel boring machine) is increasingly widely applied in major long tunnel and mine deep part stone head tunnel.Wherein, country rock is by shield formula TBM shield Load Analysis and the key of card shield Accident Forecast Anais to the test of TBM shield extruding force, especially passes through, as TBM, the region that geological conditions is poor, and pressure cell is the Main Means of its test.And shield outer surface is a smooth cylindrical shape steel surface and constantly moves forward with TBM driving, according to glue such as AB glue easy and simple to handle, epoxy glues, sensor is adhesive on shield outer surface, the sensor being then arranged on shield when with TBM driving reach because of the shearing strength of this kind of glue relatively low easily by around the rock that contacts scratch so that sensor failure.Also pressure transducer can not be directly welded in shield or other steel supporting construction, because the high temperature that welding produces will damage sensor internal structure.Therefore, intend developing a kind of simple installation, firm, the test country rock novel pressure box to TBM shield extruding force of accuracy of reading.
Summary of the invention
For solving an above-mentioned difficult problem, the purpose of this utility model is to there are provided a kind of to test the country rock pressure cell to complete-section tunnel boring machine shield extruding force, simple in construction, easy to make, substantially increase and be mounted to power and long-term fastness, thus realize the country rock accurate measurement to TBM shield extruding force.
To achieve these goals, this utility model have employed techniques below scheme:
A kind of test country rock pressure cell to complete-section tunnel boring machine (TBM) shield extruding force, including: cup-shaped base, annular lid, pressure transducer and wire bushing pipe.nullIts annexation is: by the bottom welding of cup-shaped base at shield outer surface，Cup-shaped base is connected with wire bushing pipe，Lid outward flange is had in the outer end of top annular lid，It is carved with inside thread in lid outward flange，It is carved with outside screw in cup-shaped base upper end，Pressure transducer is put in cup-shaped base，The pressure transducer cable carried by pressure transducer passes from cup-shaped base upper recess，Wire bushing pipe on set around pressure transducer cable，Again by annular lid lid，By between cup-shaped base and annular lid threaded (tightening)，The pressure transducer pressure contact that pressure transducer carries simultaneously exposes from annular lid center hole，Just the measurement country rock pressure cell to TBM shield extruding force is constituted，Its structural relation and acting as: processing and fabricating one upper end is left groove and carves threaded cup-shaped base，During on-the-spot test by cup-shaped base bottom welding on complete-section tunnel boring machine (TBM) shield outer surface，For placement force sensor with sensor to be fixed to testee TBM shield outer surface，And the effect of shearing force after country rock and sensor contacts when playing opposing TBM reach when monitoring and test；After the welding cooling of this base, pressure transducer is put in this cup-shaped base during in-site installation; sensor cable line is drawn from cup-shaped base upper recess, and around cable, lays wire bushing pipe for protecting cable in order to avoid the rock on touched when shield moves forward extrudes, abrasion；Making has inside center hole, outward flange carves threaded annular lid, covers the pressure transducer of internal placement, and the pressure contact of pressure transducer is exposed, it is possible to contact rock around；Treat that pressure transducer puts into this annular lid on cup-shaped base bonnet, annular lid is connected by screw threads for fastening with cup-shaped base, now the pressure contact at pressure transducer top exposes from annular lid center hole, just constitutes the test country rock pressure cell to TBM shield extruding force.
The Making programme of the present invention is: according to the pressure sensor dimensions design cup-shaped base selected and the size of annular lid, a cup-shaped base is gone out according to design size car in rustless steel cast iron, outer surface car in cup-shaped base open upper end goes out the external screw thread of pitch 1mm, opens a square groove in cup-shaped base upper end by design size；A circular lid is gone out according to design size car in rustless steel cast iron, inner surface gamut car in lid outer end edges goes out the inside thread of pitch 1mm, the circular hole of a diameter 20mm is cut out in lid end face central authorities, form outer end edges inner surface and there is the annular lid of inside thread, thus form the installation shell of pressure transducer；Cylinder or patty pressure transducer are put into cup-shaped base, sensor cable line is drawn at cup-shaped base upper recess, cover annular lid, pressure transducer top pressure contact exposes from this annular lid center hole, tighten the screw thread between cup-shaped base and annular lid, just produce the test country rock pressure cell to complete-section tunnel boring machine (TBM) shield extruding force.
This utility model compared with prior art, has the following advantages and effect:
(1) when installing, welding high temperature is not transferred on pressure transducer, will not damage sensor internal structure.
(2) firmly install and scratched damage by country rock when sensor can be avoided to tunnel reach with shield and TBM and drop.
(3) ensure that sensor cable line and the energy exposure smoothly of pressure contact simultaneously, be conducive to accurately measuring country rock to shield extruding force.
This pressure cell of design has been applied to the monitoring of certain TBM engineering site, shield length 12m, starts to install pressure cell at cutterhead at a distance of 1m, and at vault, left and right two is takeed on, each installation one row's pressure cell is helped in left and right two, often in row, spacing 1m installs a pressure cell, and monitoring result see table 1:
The table 1 a certain moment, country rock was to shield extruding force PiAlong shield distribution of lengths monitoring result
This moment country rock can be drawn out to shield extruding force along the regularity of distribution of shield length direction according to table 1, see Fig. 4.
Additionally, also monitoring obtains when TBM shuts down country rock to shield extruding force Evolution in time.Explanation as a example by the measuring point at vault distance excavation face 3m place, the extruding force of test Evolution in time is shown in Table 2 and Fig. 5:
Table 2 country rock is to shield extruding force PiTemporal Evolution rule monitoring result
Accompanying drawing explanation
Fig. 1 is a kind of to test the country rock pressure cell entirety front view to TBM shield extruding force.
Fig. 2 is a kind of cup-shaped base top view.
Fig. 3 is a kind of annular lid top view.
Fig. 4 country rock is to shield extruding force PiSpace distribution rule.
Fig. 5 country rock is to shield extruding force PiThe regularity of distribution in time.
In figure: 1. cup-shaped base, 2. annular lid, 3. pressure transducer (model YY-C125-10KN), 4. wire bushing pipe, 5. outside screw, 6. cup-shaped base upper recess, 7. pressure transducer (YY-C125-10KN) cable, 8. lid center hole, 9. lid outward flange, 10. annular lid outward flange inside thread, 11. pressure transducers (YY-C125-10KN) pressure contact.
Detailed description of the invention
Embodiment 1:
Below in conjunction with the accompanying drawings, the present invention is described in further detail.
One tests the country rock pressure cell to complete-section tunnel boring machine (TBM) shield extruding force, and it includes: cup-shaped base 1, annular lid 2, pressure transducer 3 and wire bushing pipe 4.nullIts annexation is: by the bottom welding of cup-shaped base 1 at shield outer surface，Cup-shaped base 1 is connected with wire bushing pipe 4，Lid outward flange 9 is had in one end of top annular lid 2，Inside thread 10 is had in lid outward flange 9，Outside screw 5 is had in cup-shaped base 1 upper end，Pressure transducer 3 is put in cup-shaped base 1，The pressure transducer cable 7 carried by pressure transducer 3 passes from cup-shaped base 1 upper recess 6，Wire bushing pipe 4 on set around pressure transducer cable 7，Again annular lid 2 is covered，By between cup-shaped base 1 and annular lid 2 threaded (tightening)，The pressure transducer pressure contact 11 that pressure transducer 3 carries simultaneously exposes from annular lid center hole 8，Just the measurement country rock pressure cell to TBM shield extruding force is constituted，Annexation between each building block of this mounting seat: (size height is designated as h according to the size selection pressure sensor 3 (model YY-C125-10KN) digging gap between country rock and shield formula TBM shield，Internal diameter is designated as r，This pressure sensor dimensions is h=11.5mm，R=13mm)，Diameter according to pressure transducer 3 and height design size (the cup-shaped base height H=h+20mm of cup-shaped base 1，Internal diameter Ri=r, external diameter Ro=r+5mm), from rustless steel cast iron, car goes out cup-shaped base 1, is carved with the outside screw 5 of pitch 1mm in the range of cup-shaped base 1 upper end 8mm, when test, cup-shaped base 1 is welded on shield outer surface.Open a square groove 6 (height=wide=2 times of sensor cable linear diameters) on cup-shaped base top, cup-shaped base 1 is for placement force sensor 3 and sensor 3 is fixed to testee shield outer surface；And according to diameter, the height of pressure contact 11 and diameter design top annular lid 2 (the annular lid internal diameter R of pressure transducer 3i'=cup-shaped base external diameter Ro=r+5mm, external diameter R'o=internal diameter+5mm, center hole radius R'=10mm, outward flange height H'=8mm, base thicknessPressure contact height), the circular hole 8 that Radius is 10mm is opened at top annular lid 2 center, the inner surface at top annular lid 2 outward flange 9 makes the inside thread 10 of pitch 1mm, for fixation pressure sensor 3；During on-the-spot test, by the bottom welding of cup-shaped base 1 at shield outer surface, after cooling, pressure transducer 3 is put in cup-shaped base 1, the cable 7 carried by pressure transducer 3 passes from cup-shaped base 1 upper recess 6, wire bushing pipe 4 on set around cable 7, again annular lid 2 is covered, by screwed tight between cup-shaped base 1 and annular lid 2, the pressure contact 11 that pressure transducer 3 carries simultaneously exposes from annular lid center hole 8, just constituting the measurement country rock pressure cell to TBM shield extruding force, structure refers to Fig. 1.
Claims (5)
- null1. test the country rock pressure cell to complete-section tunnel boring machine shield extruding force for one kind，It includes cup-shaped base (1)、Annular lid (2)、Pressure transducer (3) and wire bushing pipe (4)，Its annexation is: by the bottom welding of cup-shaped base (1) at shield outer surface，Cup-shaped base (1) is connected with wire bushing pipe (4)，Lid outward flange (9) is had in one end of top annular lid (2)，Inside thread (10) is had in lid outward flange (9)，Outside screw (5) is had in cup-shaped base (1) upper end，Pressure transducer (3) is put in cup-shaped base (1)，The pressure transducer cable (7) carried by pressure transducer (3) passes from cup-shaped base (1) upper recess (6)，Wire bushing pipe (4) is put around pressure transducer cable (7)，Again annular lid (2) is covered，To be connected by screw threads for fastening between cup-shaped base (1) and annular lid (2).
- The most according to claim 1 a kind of test the country rock pressure cell to complete-section tunnel boring machine shield extruding force, it is characterised in that: pressure transducer pressure contact (11) of described pressure transducer (3) exposes from annular lid center hole (8).
- The most according to claim 1 a kind of test the country rock pressure cell to complete-section tunnel boring machine shield extruding force, it is characterized in that: in the range of described cup-shaped base (1) upper end 8mm, be carved with the outside screw (5) of pitch 1mm, when test, cup-shaped base (1) is welded on shield outer surface.
- The most according to claim 1 a kind of test the country rock pressure cell to complete-section tunnel boring machine shield extruding force, it is characterized in that: a square groove (6) is opened on described cup-shaped base (1) top, cup-shaped base (1) placement force sensor (3) and pressure transducer (3) is fixed on testee shield outer surface.
- The most according to claim 1 a kind of test the country rock pressure cell to complete-section tunnel boring machine shield extruding force, it is characterised in that: the center hole (8) that Radius is 10mm is opened at described annular lid (2) center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620497194.5U CN205785621U (en) | 2016-05-26 | 2016-05-26 | A kind of test the country rock pressure cell to complete-section tunnel boring machine shield extruding force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620497194.5U CN205785621U (en) | 2016-05-26 | 2016-05-26 | A kind of test the country rock pressure cell to complete-section tunnel boring machine shield extruding force |
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| Publication Number | Publication Date |
|---|---|
| CN205785621U true CN205785621U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620497194.5U Expired - Fee Related CN205785621U (en) | 2016-05-26 | 2016-05-26 | A kind of test the country rock pressure cell to complete-section tunnel boring machine shield extruding force |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105890837A (en) * | 2016-05-26 | 2016-08-24 | 中国科学院武汉岩土力学研究所 | Pressure cell for testing squeezing pressure on shield of tunnel boring machine applied by surrounding rock |
-
2016
- 2016-05-26 CN CN201620497194.5U patent/CN205785621U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105890837A (en) * | 2016-05-26 | 2016-08-24 | 中国科学院武汉岩土力学研究所 | Pressure cell for testing squeezing pressure on shield of tunnel boring machine applied by surrounding rock |
| CN105890837B (en) * | 2016-05-26 | 2019-05-21 | 中国科学院武汉岩土力学研究所 | A kind of test country rock is to the pressure cell of complete-section tunnel boring machine shield extruding force |
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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: 20161207 Termination date: 20210526 |