CN107677400A - A kind of mounting and positioning device of pressure from surrounding rock box - Google Patents

A kind of mounting and positioning device of pressure from surrounding rock box Download PDF

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Publication number
CN107677400A
CN107677400A CN201710895530.0A CN201710895530A CN107677400A CN 107677400 A CN107677400 A CN 107677400A CN 201710895530 A CN201710895530 A CN 201710895530A CN 107677400 A CN107677400 A CN 107677400A
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China
Prior art keywords
pressure
rigid plastics
fixed plate
plastics bucket
pressure cell
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CN201710895530.0A
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Chinese (zh)
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CN107677400B (en
Inventor
高文学
王林台
邓洪亮
石连松
曹晓立
叶阗瑞
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Beijing University of Technology
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Beijing University of Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00Measuring force or stress, in general
    • G01L1/26Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Revetment (AREA)

Abstract

A kind of mounting and positioning device of pressure from surrounding rock box, belong to engineering monitoring or experiment field of measuring technique.Including top sandbox, lower springs bearing.Top sandbox includes rigid plastics bucket and polybag;Rigid plastics bucket is big for horn-like one end open, and one end open is small;Together with the mouth of polybag and the osculum end of rigid plastics bucket are bonded and sticked;Lower springs bearing includes fixed plate and spring leaf;Fixed plate is annulus platy structure, and center circle annular distance has pressure cell along the diameter both ends of annulus one and inserts groove;The outer radial direction of fixed plate annulus platy structure is provided with the bolt block in multiple strap bolt holes;Fixed plate plate face latches provided with multiple pressure cells, and osculum end and the fixed plate plate face of rigid plastics bucket are fixed together, while pressure cell lock is in rigid plastics bucket;The other end of spring leaf is U-shaped folder piece.Solve the problems, such as that existing installation workload is big, positioning is inaccurate, stress is unreasonable and construction in later period influences during tunnel just lining pressure from surrounding rock box use.

Description

A kind of mounting and positioning device of pressure from surrounding rock box
Technical field
The present invention relates to a kind of mounting and positioning device of Tunnel Surrounding Rock Pressure box, belongs to engineering monitoring or experiment e measurement technology Field.
Background technology
Pressure cell has been widely used in the compression chord measurement of Rock And Soil in Tunnel Engineering pressure from surrounding rock and experiment, existing It is first to put down the rock mass back side pick when Tunnel Surrounding Rock Pressure box is installed, or finds relatively flat position, by pressure cell stress surface Towards the position, certain thickness sand is also placed between pressure cell and rock mass, to ensure uniform force.Also need afterwards The pressure cell back side is fixed on bow member etc..Due to unspecial mounting and positioning device so that live workload compared with Greatly, alignment error is larger, and position is forbidden, and sand bed can not place so that stress is unreasonable.In addition, carrying out the just lining cutting back of the body During grouting behind shaft or drift lining, also easily pressure cell is impacted.Above various reasons cause the monitoring of pressure from surrounding rock can not be true Reflect project situation.Therefore, it is necessary to design a kind of special mounting and positioning device.
The content of the invention
The present invention be in order to solve tunnel just serve as a contrast existing installation workload during pressure from surrounding rock box use is big, positioning not The problem of standard, stress are unreasonable, and construction in later period influences, invents a kind of mounting and positioning device of Tunnel Surrounding Rock Pressure box.
The technical solution adopted by the present invention is a kind of mounting and positioning device of pressure from surrounding rock box, and it is husky that the device includes top Case, lower springs bearing.Top sandbox includes rigid plastics bucket (1) and polybag (2);Rigid plastics bucket (1) is horn-like One end open is big, and one end open is small;Together with the mouth of polybag (2) and the osculum end of rigid plastics bucket (1) are bonded and sticked;
Lower springs bearing includes fixed plate (3) and spring leaf (4);Fixed plate (3) is annulus platy structure, central circular Hole has pressure cell along the diameter both ends of annulus one and inserts groove (6);The outer radial side of fixed plate (3) annulus platy structure To the bolt block (8) provided with multiple strap bolt holes;The plate face of fixed plate (3) annulus platy structure is locked provided with multiple pressure cells Detain (7), the osculum end of rigid plastics bucket (1) and the plate face of fixed plate (3) annulus platy structure are fixed together, while pressure Box lock (7) is located in rigid plastics bucket (1);One end of spring leaf (4) is provided with bolt hole, the bolt hole and spiral shell of spring leaf (4) The bolt hole of bolt seat (8) is fixedly connected by bolt (9), and the other end of spring leaf (4) is U-shaped folder piece (10), each bolt block (8) a corresponding spring leaf (4);Multiple spring leafs (4) are located at the two sides of fixed plate (3) with rigid plastics bucket (1) respectively;It is more The U-shaped folder piece of individual spring leaf (4) can be fixed on bow member.
Fairlead (5) is provided with the side wall of rigid plastics bucket (1).
The diameter of fixed plate (3) center circle annular distance is less than the diameter of pressure cell;Two pressure cells insert groove (6) radial top Distance is more than the diameter of pressure cell.
Pressure cell lock is L-type structure.
The implementation process of the device is as follows, will be primarily determined that according to the distance of bow member and country rock measured with husky first, by fine sand It is poured at the center circle annular distance of the annulus harden structure of fixed plate in polybag (2), pressure cell is inserted into groove from pressure cell (6) vertically it is put into, then rotational pressure box, pressure cell is placed in rigid plastics bucket (1) while latched (7) by pressure cell Hold and fix;The lead of pressure cell is drawn from fairlead (5);Afterwards, according to the distance between bow member and country rock, adjustment The height of spring leaf (4), and along bolt (9) rotating missile reed (4) is surrounded to adapt to bow member, by U-shaped folder piece (10) and bow member It is fixed;Polybag (2) of the top sandbox equipped with fine sand is withstood on country rock, last anchor leg, position is confirmed, keeps a record.
The fixing bolt (9) and U-shaped folder piece (10) at spring leaf (4) both ends, can adapt to different bow members by rotating Width, intermediate plate can be both clipped on reinforcing bar, can also be clipped on I-steel.Spring leaf has plasticity simultaneously, can adjust branch Seat height degree.
Rigid plastics bucket (1) plays a part of polybag (2) of the support equipped with fine sand, rigid plastics bucket (1) inner surface light Sliding, outer surface has cutting, and cutting is from large port to portlet, and by close to dredging, its wall thickness is also to thickness by thin.Such top Large port can prolong cutting tear under pressure from surrounding rock, crush, and bottom, which also can guarantee that, higher deformation around under active force, Pressure cell nature stress is not influenceed.
The bottom portlet of rigid plastics bucket (1) is thicker, and cutting is relatively dredged, though there is deformation, can guarantee that integrality.Therefore, Pressure cell can be effectively protected during the follow-up back-grouting in tunnel not by mortar or moisture attack, and then will not also be made Sand bed consolidation, hardening, ensure the accuracy subsequently measured.
Polybag (2) is although can be larger because polybag (2) intensity is relatively low with the temporary weight for bearing sand Pressure can destroy polybag, therefore the deformation of sand can't be influenceed under later stage pressure from surrounding rock, ensure that pressure cell stress is closed Manage, be accurate.
The spring leaf (4) of lower seat, a temporarily fixed effect, after installing, just lining spray are played to overall Slurry can make bottom plate 3 and bow member be consolidated, and realize final fixation.
Polybag (2) uses polyethylene plastic bag, is moulded close to the position at rigid plastics bucket (1) bottom osculum end and hard The inwall of charging basket (1) bonds together, and rigid plastics bucket (1) and fixed plate (3) are integral, and material is all rigid plastics.
Brief description of the drawings
Fig. 1 is overall structure perspective view.
Fig. 2 is side view.
Fig. 3 is the perspective view of fixed plate.
The entity sectional view of Fig. 4 rigid plastics buckets
Fig. 5 is rigid plastics bucket cross-sectional view.
Fig. 6 is spring leaf perspective view.
Wherein, 1- rigid plastics bucket, 2- polyethylene plastic bags, 3- fixed plates, 4- spring leafs, 5- fairleads, 6- pressure cells Insert groove, 7- pressure cells lock, 8- bolt blocks, 9- fixing bolts, 10-U type intermediate plates
Embodiment
The present invention is illustrated in conjunction with accompanying drawing, accompanying drawing is schematic diagram, only illustrates base of the present invention in a schematic way This structure, but the present invention is not limited to following examples.
Embodiment 1
Fig. 1-6 represents the basic composition of the present invention, and rigid plastics bucket 1 primarily serves the effect of supporting plastic bag 2, and Play a part of completely cutting off mortar in later stage back-grouting.Plastic Drum 1 has cutting, and cutting is in netted, can be caused by country rock During pressure, the bucket wall of top thin location can be broken, crush, and bottom then ensures there is moderate finite deformation, but not broken.
Fine sand is that to be disposed from the mesopore of fixed plate 3 into, pressure cell be that the groove 6 of inserting reserved from fixed plate is inserted, and is overturn, With the fixation of pressure cell lock 7, (pressure cell lock is L-type structure, and all L-type structure one end are vertically fixed in fixed plate 3, separately One end inwardly disperses to form a plane), also function to the effect for blocking sandbag.
Lower springs piece 4 has plasticity, height can be adjusted according to the distance of bow member and country rock, to ensure Sand Bucket top Firmly country rock.Fixed position is adjusted by swivel bolt 9, to adapt to bow member shape.

Claims (5)

1. a kind of mounting and positioning device of pressure from surrounding rock box, it is characterised in that the device includes top sandbox, lower springs branch Seat.Top sandbox includes rigid plastics bucket (1) and polybag (2);Rigid plastics bucket (1) is big for horn-like one end open, and one End opening is small;Together with the mouth of polybag (2) and the osculum end of rigid plastics bucket (1) are bonded and sticked;
Lower springs bearing includes fixed plate (3) and spring leaf (4);Fixed plate (3) is annulus platy structure, center circle annular distance edge The diameter both ends of annulus one have pressure cell and insert groove (6);The outer radial direction of fixed plate (3) annulus platy structure is provided with The bolt block (8) in multiple strap bolt holes;The plate face of fixed plate (3) annulus platy structure is provided with multiple pressure cells lock (7), firmly The osculum end of matter Plastic Drum (1) and the plate face of fixed plate (3) annulus platy structure are fixed together, while pressure cell lock (7) In rigid plastics bucket (1);One end of spring leaf (4) is provided with bolt hole, bolt hole and the bolt block (8) of spring leaf (4) Bolt hole is fixedly connected by bolt (9), and the other end of spring leaf (4) is U-shaped folder piece (10), each bolt block (8) corresponding one Individual spring leaf (4);Multiple spring leafs (4) are located at the two sides of fixed plate (3) with rigid plastics bucket (1) respectively;Multiple spring leafs (4) U-shaped folder piece can be fixed on bow member;Fairlead (5) is provided with the side wall of rigid plastics bucket (1).
2. according to a kind of mounting and positioning device of pressure from surrounding rock box described in claim 1, it is characterised in that in fixed plate (3) The diameter of heart annulus hole is less than the diameter of pressure cell;The distance that two pressure cells insert groove (6) radial top is more than the straight of pressure cell Footpath.
3. according to a kind of mounting and positioning device of pressure from surrounding rock box described in claim 1, it is characterised in that pressure cell, which latches, is L-type structure.
4. according to a kind of mounting and positioning device of pressure from surrounding rock box described in claim 1, it is characterised in that rigid plastics bucket (1) polybag (2) of the support equipped with fine sand is played a part of, rigid plastics bucket (1) inner surface is smooth, and outer surface has cutting, Cutting is from large port to portlet, and by close to dredging, its wall thickness is also to thickness by thin.
5. the method implemented using the mounting and positioning device described in claim 1, it is characterised in that comprise the following steps: It will be primarily determined that first according to the distance of bow member and country rock with husky amount, the central circular by fine sand from the annulus harden structure of fixed plate It is poured at hole in polybag (2), pressure cell is inserted in groove (6) from pressure cell and is vertically put into, then rotational pressure box, makes pressure Power box, which is placed in rigid plastics bucket (1), to be latched (7) by pressure cell simultaneously and holds and fixed;The lead of pressure cell is from fairlead (5) Middle extraction;Afterwards, according to the distance between bow member and country rock, the height of adjustment spring leaf (4), and rotated along around bolt (9) Spring leaf (4) is fixed to adapt to bow member, by U-shaped folder piece (10) with bow member;Polybag (2) of the top sandbox equipped with fine sand is withstood on On country rock, last anchor leg, confirm position, keep a record.
CN201710895530.0A 2017-09-28 2017-09-28 Installation positioner of country rock pressure cell Expired - Fee Related CN107677400B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710895530.0A CN107677400B (en) 2017-09-28 2017-09-28 Installation positioner of country rock pressure cell

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Application Number Priority Date Filing Date Title
CN201710895530.0A CN107677400B (en) 2017-09-28 2017-09-28 Installation positioner of country rock pressure cell

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CN107677400A true CN107677400A (en) 2018-02-09
CN107677400B CN107677400B (en) 2020-01-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109990932A (en) * 2019-04-03 2019-07-09 辽宁工程技术大学 A kind of fixed device of Tunnel Surrounding Rock Pressure meter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544160A1 (en) * 1975-10-03 1977-04-28 Eckardt Ag J Support for load cell in form of bending beam - with beam placed in slot in mounting plate and connected to it by one end
CN103822739A (en) * 2014-02-26 2014-05-28 洛阳理工学院 Rock tunnel surrounding rock pressure gauge fixing device
CN203657961U (en) * 2014-01-07 2014-06-18 洛阳理工学院 A soil pressure gauge fixing device
CN203701066U (en) * 2014-02-10 2014-07-09 水利部交通运输部国家能源局南京水利科学研究院 Soil pressure meter position-adjustable fixed installation device
CN106323527A (en) * 2016-09-27 2017-01-11 中国科学院武汉岩土力学研究所 Pressure cell fast positioning and fixing device
CN207231679U (en) * 2017-09-28 2018-04-13 北京工业大学 A kind of mounting and positioning device of pressure from surrounding rock box

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544160A1 (en) * 1975-10-03 1977-04-28 Eckardt Ag J Support for load cell in form of bending beam - with beam placed in slot in mounting plate and connected to it by one end
CN203657961U (en) * 2014-01-07 2014-06-18 洛阳理工学院 A soil pressure gauge fixing device
CN203701066U (en) * 2014-02-10 2014-07-09 水利部交通运输部国家能源局南京水利科学研究院 Soil pressure meter position-adjustable fixed installation device
CN103822739A (en) * 2014-02-26 2014-05-28 洛阳理工学院 Rock tunnel surrounding rock pressure gauge fixing device
CN106323527A (en) * 2016-09-27 2017-01-11 中国科学院武汉岩土力学研究所 Pressure cell fast positioning and fixing device
CN207231679U (en) * 2017-09-28 2018-04-13 北京工业大学 A kind of mounting and positioning device of pressure from surrounding rock box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109990932A (en) * 2019-04-03 2019-07-09 辽宁工程技术大学 A kind of fixed device of Tunnel Surrounding Rock Pressure meter

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