CN106370335A - Pressure box fixing device for measuring surrounding rock-lining contact pressure of rock - Google Patents
Pressure box fixing device for measuring surrounding rock-lining contact pressure of rock Download PDFInfo
- Publication number
- CN106370335A CN106370335A CN201610917582.9A CN201610917582A CN106370335A CN 106370335 A CN106370335 A CN 106370335A CN 201610917582 A CN201610917582 A CN 201610917582A CN 106370335 A CN106370335 A CN 106370335A
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- China
- Prior art keywords
- pressure
- pressure cell
- rock
- fixing device
- country rock
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
Abstract
The invention discloses a pressure box fixing device for measuring a surrounding rock-lining contact pressure of rock. The pressure box fixing device comprises an annular pressure box bracket; and a plurality of fixed support arms fixedly arranged on surrounding rock are arranged at the peripheral surface of the pressure box bracket along a circumferential direction. A reducing ring is arranged on one end surface of the pressure box bracket, wherein the central axis of the reducing ring is consistent with the central axis direction of the pressure box bracket; a hollow cavity of the reducing ring is an accommodation cavity for placing a pressure box; and a pitch bag for contact with the surrounding rock is arranged at one side, approaching the pressure box bracket, of the accommodation cavity. Besides, a limiting device for limiting the pressure box in the accommodation cavity is arranged. Therefore, the surrounding rock-lining contact pressure of the rock can be measured accurately; the contact pressure can be measured accurately; the structure is simple; and installation becomes convenient and rapid.
Description
Technical field
The invention belongs to the measurement auxiliary equipment of the supporting of the underground engineering such as colliery, Tunnel Engineering, hydraulic engineering, especially relate to
And a kind of measurement rock matter country rock-lining cutting contact pressure pressure cell fixing device.
Background technology
In constructing tunnel, the contact pressure of country rock-lining cutting belongs to one of selective-test item.But rock matter country rock is enclosed
Rock-lining cutting contact pressure measurement, at present because its contact pressure is all to be measured from steel chord type soil pressure cell, in measurement
It is difficult to pressure cell and country rock scar fits tightly, even if fitting tightly due to country rock is rock matter, by string wire pressure cell principle
Understand, it is difficult to accurately measure pressure from surrounding rock, simultaneously because the contraction of concrete, to be tightly wrapped in the side of pressure cell, can cause
The serious distortion of measurement data or even mistake.
For vibrating-wire pressure cell to rock matter country rock-inaccurate situation of lining cutting contact pressure measurement, Patent No.
A kind of fixing device being vertically arranged soil pressure cell is disclosed, in subgrade engineering prison in the Chinese patent of cn201420351029.x
It is used for the fixation of soil pressure cell, the invention discloses a kind of water in the Chinese patent of Patent No. cn201410300017.9 in survey
The fixing device of soil pressure cell put by plain cloth, is used for the fixation of soil pressure cell in subgrade engineering monitoring works.Patent No.
A kind of pressure cell fixing device is disclosed, it is provided with pressure cell on steel plate in the Chinese patent of cn201220698095.5
Groove, several setscrew hole, several screw and iron wire.Pressure cell groove is used for laying pressure cell, and setscrew hole is used for through swollen
Swollen screw, screw can be screwed into steel plate, and iron wire is fixed on screw.In a word, the fixing dress of existing rock matter country rock-lining cutting soil pressure cell
Only, fixing device applicable to soil property country rock has change, side concrete shrinkage shadow to regional stress state to be measured to put generally existing
The problems such as sound is not paid attention to, actual monitoring effect is undesirable, is unfavorable for the popularization and application in Practical Project.
Content of the invention
It is an object of the invention to, provide one kind to utilize string wire pressure cell accurate for solving problems of the prior art
Really measure rock matter country rock-lining cutting contact pressure, meet contact pressure measurement accurately, structure is simple, auxiliary quick and easy for installation
Fixing device.
For achieving the above object, the technical solution adopted in the present invention is: a kind of measurement rock matter country rock-lining cutting contact pressure
Pressure cell fixing device, including pressure cell receptacle ringwise, the outer peripheral face of pressure cell receptacle is circumferentially equipped with multiple use
In the fixing support arm being installed on country rock；One end face of pressure cell receptacle is provided with pressure-reducing ring, the axis of pressure-reducing ring and pressure
The axis direction of power cassette holder support is consistent, and the middle cavity of pressure-reducing ring is the accommodating cavity for placement force box, described receiving
The side of the close pressure cell receptacle of cavity is provided with the Colophonium capsule for contacting with country rock；It is additionally provided with for being limited to pressure cell
Stopping means in accommodating cavity.
As preferred scheme, described stopping means include three be circumferentially each provided at pressure-reducing ring outer surface spacing
Arm, spacing support arm be in the type of falling l, it includes horizontal segment and vertical section, and vertical section is vertically set in pressure cell receptacle, horizontal segment with
Pressure-reducing ring upper end keeps at a certain distance away, and horizontal segment and vertical section offer the first spacing hole and the second spacing hole respectively.
As preferred scheme, the quantity of described fixing support arm is three, fixing support arm offers and expands for installing
The fixing hole of bolt.
As preferred scheme, the length of described fixing support arm is 28-32cm.
As preferred scheme, the length of described fixing support arm is 30cm.
As preferred scheme, described pressure cell receptacle is made using steel material.
As preferred scheme, described pressure-reducing ring is made up of cellular foam plastics.
As preferred scheme, one end of described fixing support arm offers tenon, pressure cell receptacle offers for
The tongue-and-groove that described tenon is adapted.
Compared with prior art, the invention has the benefit that
1st, by fixing support arm, pressure cell receptacle is tightly fixed on country rock, forms the sharp channel of reliable biography, can be by pressure
Circular Colophonium capsule, pressure cell, honeycomb pressure-reducing ring are tightly fastened by power cassette holder support by bolt；Fixing arm length 30cm,
Decreasing expansion bolt affects on the pressure from surrounding rock in region to be measured, its positioning bolt hole apart from pressure cell 25cm, in fixation procedure
In, make test surfaces avoid the pressure from surrounding rock variation zone causing when expansion bolt is fixing, improve measuring accuracy；
2nd, arranged by Colophonium capsule it is ensured that pressure cell measurement accuracy, simultaneously because the setting of honeycomb pressure-reducing ring decreases
The impact to sensor for the concrete shrinkage；Between scar and pressure cell test surfaces place Colophonium capsule, it is to avoid scar rigidity larger and
Build-up of pressure box test surfaces cannot form the local stress difference that effective bending or scar injustice cause；The setting of honeycomb pressure-reducing ring
The concrete-lined impact shunk to pressure cell certainty of measurement after pressure cell is buried can be efficiently reduced；
3rd, by stopping means, pressure cell is closely limited in accommodating cavity, prevents in rock matter country rock-lining cutting contact pressure
In test process, pressure cell is moved, it is to avoid impact test effect.
Brief description
Fig. 1 is the top view of the embodiment of the present invention.
Fig. 2 is the a-a of Fig. 1 to sectional view.
In figure labelling: 1, pressure cell receptacle, 2, spacing support arm, the 201, first spacing hole, the 202, second spacing hole, 3, decompression
Ring, 4, fixing support arm, 401, fixing hole, 5, accommodating cavity, 6, Colophonium capsule.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Embodiment: as shown in Figure 1 and Figure 2, a kind of pressure cell fixing device of measurement rock matter country rock-lining cutting contact pressure, bag
Include pressure cell receptacle 1 ringwise, the outer peripheral face of pressure cell receptacle 1 is circumferentially equipped with three for being installed in consolidating on country rock
Determine support arm 4, fixing support arm 4 is welded on the outer wall surface of pressure cell receptacle 1, the angle between the fixing support arm 4 of each two is 120 °,
Fixing hole 401 for installing expansion bolt is offered on fixing support arm 4；The length of fixing support arm is 28-32cm, preferably
30cm, fixing hole 401 is 25cm with the spacing of pressure cell, and decreasing expansion bolt affects on the pressure from surrounding rock in region to be measured.
One end face of pressure cell receptacle 1 is provided with pressure-reducing ring 3, and pressure-reducing ring 3 is made up of cellular foam plastics.Pressure-reducing ring
3 is in hollow cylindrical, and its wall thickness is 0.5cm；The axis of pressure-reducing ring 3 is consistent with the axis direction of pressure cell receptacle 1, subtracts
The middle cavity of pressure ring 3 is the accommodating cavity 5 for placement force box, the inner wall surface of honeycomb pressure-reducing ring 3 and the outer wall of pressure cell
Surface fits tightly, and the side of the close pressure cell receptacle 1 of accommodating cavity 5 is provided with the Colophonium capsule 6 for contacting with country rock, in rock
Place Colophonium capsule between face and pressure cell test surfaces, it is to avoid scar rigidity is larger and build-up of pressure box test surfaces cannot be formed effectively curved
The local stress difference that bent or scar injustice causes.
It is additionally provided with the stopping means for being limited to pressure cell in accommodating cavity 5, stopping means include three circumferentially
It is each provided at the spacing support arm 2 of pressure-reducing ring 3 outer surface, spacing support arm 2 is in the type of falling l, and it includes horizontal segment and vertical section, vertical section
It is vertically set in pressure cell receptacle 1, horizontal segment is kept at a certain distance away with pressure-reducing ring 3 upper end, on horizontal segment and vertical section respectively
Offer the first spacing hole 201 and the second spacing hole 202, the second spacing hole 202 is 1- apart from the vertical dimension of pressure cell receptacle 1
3cm is it is therefore preferable to 2cm.By stopping means, pressure cell is closely limited in accommodating cavity 5, prevents pressure in test process
Power box is moved, impact test effect.
One end of fixing support arm 4 offers tenon, and pressure cell receptacle 1 is offered the tenon for being adapted with described tenon
Groove.
By setting caging bolt in the first spacing hole 201 and the second spacing hole 202 so that pressure cell, Colophonium capsule 6 and
Country rock crag fits tightly, between horizontal segment and pressure cell spaced apart for 1cm.
Pressure cell receptacle 1 is made from steel material, its diameter 1cm bigger than the diameter of pressure cell.
When specifically burying, first pressure cell is enclosed within honeycomb pressure-reducing ring, one end of the close scar of pressure cell adds Colophonium capsule
Fit tightly with rock mass, fixing device is integrally enclosed within outside honeycomb pressure-reducing ring, by the fixing in the hole setting in fixing support arm 4
Expansion bolt is so that this fixing device is fixed with rock mass, then makes pressure cell, Colophonium capsule and rock mass tight by adjusting caging bolt
Laminating.
The operation principle of the present invention is: with pressure cell receptacle and fixing support arm, pressure cell, Colophonium capsule, pressure-reducing ring is jointly solid
It is scheduled on rock mass surface, fixing arm length 30cm, the fixing hole opening up thereon, apart from pressure cell 25cm, in fixation procedure, makes
Test surfaces avoid the pressure from surrounding rock variation zone causing when expansion bolt is fixing, improve measuring accuracy；Simultaneously in scar and pressure cell
Colophonium capsule is placed, it is to avoid scar rigidity is larger and build-up of pressure box test surfaces cannot form effective bending or scar not between test surfaces
The flat local stress difference causing；It is right that the setting of pressure-reducing ring can efficiently reduce concrete-lined contraction after pressure cell is buried
The impact of pressure cell certainty of measurement.Colophonium capsule herein is the pouch filling Colophonium, and its volume is easily deformed.
Claims (8)
1. a kind of pressure cell fixing device of measurement rock matter country rock-lining cutting contact pressure it is characterised in that: include pressure ringwise
Power cassette holder support (1), the outer peripheral face of pressure cell receptacle (1) is circumferentially equipped with multiple fixing support arms for being installed on country rock
(4)；One end face of pressure cell receptacle (1) is provided with pressure-reducing ring (3), in the axis of pressure-reducing ring and pressure cell receptacle (1)
Axis direction is consistent, and the middle cavity of pressure-reducing ring (3) is the accommodating cavity (5) for placement force box, described accommodating cavity (5)
The side of close pressure cell receptacle (1) be provided with the Colophonium capsule (6) for contacting with country rock；It is additionally provided with for limiting pressure cell
Stopping means in accommodating cavity (5).
2. the pressure cell fixing device of a kind of measurement rock matter country rock-lining cutting contact pressure according to claim 1, its feature
It is: described stopping means include three spacing support arms (2) being circumferentially each provided at pressure-reducing ring (3) outer surface, spacing support arm
(2) it is in the type of falling l, it includes horizontal segment and vertical section, and vertical section is vertically set in pressure cell receptacle (1), horizontal segment and decompression
Ring (3) upper end keeps at a certain distance away, and horizontal segment and vertical section offer the first spacing hole (201) and the second spacing hole respectively
(202).
3. the pressure cell fixing device of a kind of measurement rock matter country rock-lining cutting contact pressure according to claim 2, its feature
It is: the quantity of described fixing support arm (4) is three, fixing support arm (4) offers the fixing hole for installing expansion bolt
(401).
4. the pressure cell fixing device of a kind of measurement rock matter country rock-lining cutting contact pressure according to claim 3, its feature
It is: the length of described fixing support arm (4) is 28-32cm.
5. the pressure cell fixing device of a kind of measurement rock matter country rock-lining cutting contact pressure according to claim 4, its feature
It is: the length of described fixing support arm (4) is 30cm.
6. the pressure cell fixing device of a kind of measurement rock matter country rock-lining cutting contact pressure according to claim 1, its feature
It is: described pressure cell receptacle (1) is made using steel material.
7. the pressure cell fixing device of a kind of measurement rock matter country rock-lining cutting contact pressure according to claim 1, its feature
It is: described pressure-reducing ring (3) is made up of cellular foam plastics.
8. the pressure cell fixing device of a kind of measurement rock matter country rock-lining cutting contact pressure according to claim 1, its feature
It is: one end of described fixing support arm (4) offers tenon, pressure cell receptacle (1) offers for fitting with described tenon phase
The tongue-and-groove joined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610917582.9A CN106370335B (en) | 2016-10-21 | 2016-10-21 | Pressure box fixing device for measuring rock surrounding rock-lining contact pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610917582.9A CN106370335B (en) | 2016-10-21 | 2016-10-21 | Pressure box fixing device for measuring rock surrounding rock-lining contact pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106370335A true CN106370335A (en) | 2017-02-01 |
| CN106370335B CN106370335B (en) | 2022-06-28 |
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Family Applications (1)
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|---|---|---|---|
| CN201610917582.9A Active CN106370335B (en) | 2016-10-21 | 2016-10-21 | Pressure box fixing device for measuring rock surrounding rock-lining contact pressure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462354A (en) * | 2017-07-17 | 2017-12-12 | 山东中宏路桥建设有限公司 | Pressure from surrounding rock monitoring device |
| CN108930540A (en) * | 2017-05-27 | 2018-12-04 | 中冶长天国际工程有限责任公司 | Just prop up-two lining contact pressure measuring devices and its method for embedding in tunnel |
| CN109707448A (en) * | 2019-02-20 | 2019-05-03 | 西安科技大学 | It is a kind of for installing the ancillary equipment of soil pressure cell |
| CN114324142A (en) * | 2021-11-26 | 2022-04-12 | 北京中煤矿山工程有限公司 | Contact surface friction measuring device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930540A (en) * | 2017-05-27 | 2018-12-04 | 中冶长天国际工程有限责任公司 | Just prop up-two lining contact pressure measuring devices and its method for embedding in tunnel |
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| CN107462354A (en) * | 2017-07-17 | 2017-12-12 | 山东中宏路桥建设有限公司 | Pressure from surrounding rock monitoring device |
| CN109707448A (en) * | 2019-02-20 | 2019-05-03 | 西安科技大学 | It is a kind of for installing the ancillary equipment of soil pressure cell |
| CN114324142A (en) * | 2021-11-26 | 2022-04-12 | 北京中煤矿山工程有限公司 | Contact surface friction measuring device |
| CN114324142B (en) * | 2021-11-26 | 2024-03-26 | 北京中煤矿山工程有限公司 | Contact surface friction force measuring device |
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| CN106370335B (en) | 2022-06-28 |
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Application publication date: 20170201 Assignee: Henan mengsen Construction Engineering Service Co.,Ltd. Assignor: LUOYANG INSTITUTE OF SCIENCE AND TECHNOLOGY Contract record no.: X2023980031801 Denomination of invention: A pressure box fixing device for measuring the contact pressure between rock surrounding rock and lining Granted publication date: 20220628 License type: Common License Record date: 20230203 Application publication date: 20170201 Assignee: Henan mengsen Construction Engineering Service Co.,Ltd. Assignor: LUOYANG INSTITUTE OF SCIENCE AND TECHNOLOGY Contract record no.: X2023980031769 Denomination of invention: A pressure box fixing device for measuring the contact pressure between rock surrounding rock and lining Granted publication date: 20220628 License type: Common License Record date: 20230203 |