CN201600206U - Flexible film hydraulic earth pressure gauge - Google Patents
Flexible film hydraulic earth pressure gauge Download PDFInfo
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- CN201600206U CN201600206U CN2009202457656U CN200920245765U CN201600206U CN 201600206 U CN201600206 U CN 201600206U CN 2009202457656 U CN2009202457656 U CN 2009202457656U CN 200920245765 U CN200920245765 U CN 200920245765U CN 201600206 U CN201600206 U CN 201600206U
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Abstract
The utility model relates to a flexible film hydraulic earth pressure gauge for long-term monitoring of earth pressure of ground fissure layer tunnel surrounding rock. Conventional earth pressure monitor is mostly applied to monitoring construction period of tunnel grotto excavation process, foundation pit construction process, high retaining wall construction and the like, however reliable monitor result is difficult to be obtained in monitoring of operating period due to affection of durability, stability and effectiveness of tested components. The flexible film hydraulic earth pressure gauge includes an earth pressure sensing flexible film, a sealed stainless steel liquid-filled box, HV hydraulic oil and a hydraulic sensor, the flexible film deforms under earth pressure, outer force is transmitted to liquid inside the box to be transmitted to a sensing face of the hydraulic sensor, and earth pressure of a monitored point is directly reflected. Accordingly, the earth pressure gauge has wide adaptability, guarantees long-term monitor with stable performance, and is wide in application prospect in long-term monitor field of earth pressure of the ground fissure layer tunnel surrounding rock.
Description
Technical field
The utility model relates to a kind of soil pressure monitoring device, particularly a kind of fexible film hydraulic pressure earth pressure gauge of floor fissure strata tunnel country rock soil pressure long term monitoring.
Background technology
Cavern's structures such as tunnel often run into complex geological conditions, as ground fissure, goaf, solution cavity and cratering etc.Especially based on the growth of rift structure, excessive exploitation underground water is the ground fissure that inducement forms, and has a strong impact on the stability of cavern's structures.After the mutual changing of the relative positions takes place upper and lower dish stratum, ground fissure both sides,, may cause country rock and liner structure to come to nothing, make liner structure be in the semi-girder state and damage because the stratum is different with the continuity and the rigidity of tunnel lining structure; Simultaneously, tunnel lining structure will produce excessive extra-stress and additional deformation under the ground fissure activity, may cause liner structure cracking or tailure in buckling.Because the country rock soil pressure is the primary load form that acts on the liner structure, the security and stability in its value and liner structure future is relevant, directly reflected the interaction of country rock and liner structure under the ground fissure activity condition, therefore, in the liner structure outside soil pressure monitoring instrument is installed, the variation of monitoring operation phase tunnel surrounding soil pressure in real time effectively seems extremely necessary.By analyzing the variation of country rock soil pressure, understand the variation of liner structure internal force effectively, and the heavy distributed process of surrouding rock stress under the ground fissure activity, thereby provide effective foundation to treatment measures.
At present, the soil pressure of comparative maturity monitoring is applied to the monitoring that tunnel cavern excavation process, foundation pit construction process, height are built the construction time such as retaining wall construction more, and for the monitoring of runtime, the often influence of tested person element permanance, stability, validity is difficult to obtain reliable monitoring result.At shortcoming that is applied to earth pressure gauge in the engineering at present and deficiency, on the basis of existing monitoring technology, research and develop a kind of durable, stable, sensitive, country rock earth pressure gauge of being convenient to safeguard, change very necessary for country rock soil pressure under the long term monitoring ground fissure activity condition.The research of existing earth pressure gauge mainly concentrates on its test philosophy and the array mode, can divide fluid pressure type, air pressure balanced-type, electric (comprising differential resistance type, resistance-strain type, inductance type etc.) and steel chord type etc. by principle, wherein the steel chord type earth pressure gauge divides monofilm formula, dual-membrane type again; Form according to its inside, also have secondary induction type earth pressure gauge.
The utility model content
The fexible film hydraulic pressure earth pressure gauge that the purpose of this utility model provides a kind of simple in structure, easy to use, stable performance, applicability is wide and can long term monitoring.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of fexible film hydraulic pressure earth pressure gauge, its special character is: described pressure gauge comprises pressure sensitive flexible membrane, topping up box, HV hydraulic oil and hydraulic pressure transducer four part-structures.Described topping up box is one to have the disk of " recessed " font cavity, described pressure sensitive flexible membrane is arranged on the opening of topping up box, the HV hydraulic oil that is provided with in the topping up box cavity, on the base of topping up box hydraulic pressure transducer is set, hydraulic pressure transducer connects data acquisition system (DAS) by signal-transmitting cable.
Pressure sensitive fexible film on the above-mentioned opening that is arranged on the topping up box makes the induction fexible film be in tensioned state by the steel pressure ring and the screw of O-ring seal, fixed film periphery, and the opening of sealing topping up box.
Above-mentioned hydraulic pressure transducer adopts CYG01 type piezoresistive transducer.
Above-mentioned hydraulic pressure transducer is communicated with by stainless steel communicating pipe with the topping up box.
Advantage of the present utility model is as follows:
This pressure gauge is simple in structure, easy to use, stable performance, applicability wide, guarantee characteristics such as long term monitoring, has broad application prospects for the long term monitoring of floor fissure strata subway tunnel country rock soil pressure.
Description of drawings
Fig. 1 is the sectional structure chart of the fexible film hydraulic pressure earth pressure gauge of the utility model method;
Fig. 2 is the plane structure chart of the fexible film hydraulic pressure earth pressure gauge of the utility model method;
Among the figure, 1-responds to flexible membrane; 2-steel pressure ring; The 3-O-ring seal; The 4-screw; 5-HV hydraulic oil; 6-sealing stainless steel topping up box; The 7-hydraulic pressure transducer; The 8-signal-transmitting cable.
Embodiment
Below in conjunction with accompanying drawing and concrete method for making the utility model is elaborated.
This pressure gauge adopts the hydraulic transfering principle research and development to form, be actually a kind of secondary induction earth pressure gauge, described pressure gauge comprises pressure sensitive flexible membrane 1, topping up box 6, HV hydraulic oil 5 and hydraulic pressure transducer 7 four part-structures, and described topping up box 6 is one to have the disk of " recessed " font cavity; Described pressure sensitive flexible membrane 1 is arranged on the opening of topping up box 6, and the HV hydraulic oil 5 that is provided with in topping up box 6 cavitys is provided with hydraulic pressure transducer 7 on the base of topping up box 6, and hydraulic pressure transducer 7 connects data acquisition system (DAS) by signal-transmitting cable 8.When outside soil pressure acts on the fexible film sensitive surface, flexible membrane is stressed to deform, and external force passed to liquid in the box, liquid is transmitted to pressure the hydraulic pressure transducer sensitive surface again in the box, by hydraulic pressure size in the direct measuring box of hydraulic pressure transducer, and reflect the soil pressure size of institute's measuring point indirectly.Wherein, fexible film employing elasticity is good, the top-quality rubber of acid and alkali-resistance, by changing fexible film surface of contact size, goes for different medium and inhomogeneous mediums such as sand, rubble, weak soil; Sealing stainless steel topping up box is made by stainless steel, has high waterproof, anti-corrosion performance, is suitable for being embedded in for a long time in the soil body or the fundamental plane position of the soil body and underground structure; Fill solution in the box and adopt HV hydraulic oil with good cryogenic property, thermal stability, good resistance emulsibility and rustless property; Hydraulic pressure transducer adopts CYG01 type piezoresistive transducer; its reliable operation, rotproofness, antijamming capability are strong; uncertainty can reach more than the 0.04%FS; can be installed on the topping up box base; or by being connected stainless steel communicating pipe with the topping up box; in the introducing underground structure, be convenient to hydraulic pressure transducer protection and replacing.
Using method of the present utility model, at first prepare stainless steel topping up box 6, its concrete size is decided according to actual needs, again hydraulic pressure transducer 7 is fixed on the topping up box base, and by signal-transmitting cable 8 connection data acquisition system (DAS)s, filling HV hydraulic oil 5 in box then, at last fexible film 1 is installed on off-the-shelf stainless steel topping up box 6 openings, use the steel pressure ring 2 and the screw 4 sealing opening fexible films 1 of O-ring seal 3, fixed film periphery, make soil pressure sensitive surface (fexible film 1) be in tensioned state, and guarantee no bubble in the box.
Claims (4)
1. fexible film hydraulic pressure earth pressure gauge, it is characterized in that: described pressure gauge comprises pressure sensitive flexible membrane (1), topping up box (6), HV hydraulic oil (5) and hydraulic pressure transducer (7) four part-structures, and described topping up box (6) is one to have the disk of " recessed " font cavity; Described pressure sensitive flexible membrane (1) is arranged on the opening of topping up box (6), the HV hydraulic oil (5) that is provided with in topping up box (6) cavity, hydraulic pressure transducer (7) is set on the base of topping up box (6), and hydraulic pressure transducer (7) connects data acquisition system (DAS) by signal-transmitting cable (8).
2. a kind of fexible film hydraulic pressure earth pressure gauge according to claim 1, it is characterized in that: the pressure sensitive fexible film (1) on the described opening that is arranged on topping up box (6) is by the steel pressure ring (2) and the screw (4) of O-ring seal (3), fixed film periphery, make induction fexible film (1) be in tensioned state, and the opening of sealing topping up box (6).
3. a kind of fexible film hydraulic pressure earth pressure gauge according to claim 1 and 2 is characterized in that: described hydraulic pressure transducer (7) adopts CYG01 type piezoresistive transducer.
4. a kind of fexible film hydraulic pressure earth pressure gauge according to claim 3 is characterized in that: described hydraulic pressure transducer (7) is communicated with by stainless steel communicating pipe with topping up box (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202457656U CN201600206U (en) | 2009-12-14 | 2009-12-14 | Flexible film hydraulic earth pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202457656U CN201600206U (en) | 2009-12-14 | 2009-12-14 | Flexible film hydraulic earth pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201600206U true CN201600206U (en) | 2010-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202457656U Expired - Fee Related CN201600206U (en) | 2009-12-14 | 2009-12-14 | Flexible film hydraulic earth pressure gauge |
Country Status (1)
| Country | Link |
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| CN (1) | CN201600206U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076436A (en) * | 2012-12-26 | 2013-05-01 | 上海交通大学 | Device for measuring soil lateral pressure and consolidometer |
| CN104483061A (en) * | 2014-12-29 | 2015-04-01 | 中国铁道科学研究院铁道建筑研究所 | Pressure monitoring device and method for monitoring pressure of tunnel lining concrete |
| CN104655242A (en) * | 2014-11-05 | 2015-05-27 | 河南工业大学 | Method for detecting pressure of bottom surface of granary and pressure sensor adopted by method |
| CN106091998A (en) * | 2016-05-20 | 2016-11-09 | 新乡学院 | A kind of real-time monitoring device for xoncrete structure of technical field of civil engineering |
| CN106768499A (en) * | 2016-11-16 | 2017-05-31 | 中北大学 | Fluid pressure type soil pressure sensor |
| CN108120645A (en) * | 2017-12-22 | 2018-06-05 | 上海岩土工程勘察设计研究院有限公司 | A kind of soil pressure in-situ testing device and its test method |
| CN108760097A (en) * | 2018-02-28 | 2018-11-06 | 南京元感微电子有限公司 | A kind of load cell |
| CN109596258A (en) * | 2018-11-21 | 2019-04-09 | 河海大学 | A kind of reversible formula earth pressure gauge |
| CN111982360A (en) * | 2020-09-01 | 2020-11-24 | 辽宁大学 | Small-sized pressure sensing device for robot foot |
| CN112554950A (en) * | 2020-12-16 | 2021-03-26 | 四川高速公路建设开发集团有限公司 | Rapid burying device and construction method for tunnel soil pressure gauge to be in complete contact with stress surface |
| CN113029417A (en) * | 2021-03-09 | 2021-06-25 | 三峡大学 | Small three-dimensional soil pressure cell suitable for soil deformation field test and model test |
| CN114018473A (en) * | 2021-11-16 | 2022-02-08 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Soil pressure sensor calibrating device |
-
2009
- 2009-12-14 CN CN2009202457656U patent/CN201600206U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076436A (en) * | 2012-12-26 | 2013-05-01 | 上海交通大学 | Device for measuring soil lateral pressure and consolidometer |
| CN103076436B (en) * | 2012-12-26 | 2015-07-08 | 上海交通大学 | Device for measuring soil lateral pressure and consolidometer |
| CN104655242A (en) * | 2014-11-05 | 2015-05-27 | 河南工业大学 | Method for detecting pressure of bottom surface of granary and pressure sensor adopted by method |
| CN104483061A (en) * | 2014-12-29 | 2015-04-01 | 中国铁道科学研究院铁道建筑研究所 | Pressure monitoring device and method for monitoring pressure of tunnel lining concrete |
| CN106091998B (en) * | 2016-05-20 | 2019-01-25 | 新乡学院 | A kind of real-time monitoring device for concrete structure of technical field of civil engineering |
| CN106091998A (en) * | 2016-05-20 | 2016-11-09 | 新乡学院 | A kind of real-time monitoring device for xoncrete structure of technical field of civil engineering |
| CN106768499B (en) * | 2016-11-16 | 2023-08-08 | 中北大学 | Hydraulic soil pressure sensor |
| CN106768499A (en) * | 2016-11-16 | 2017-05-31 | 中北大学 | Fluid pressure type soil pressure sensor |
| CN108120645A (en) * | 2017-12-22 | 2018-06-05 | 上海岩土工程勘察设计研究院有限公司 | A kind of soil pressure in-situ testing device and its test method |
| CN108120645B (en) * | 2017-12-22 | 2024-01-05 | 上海勘察设计研究院(集团)股份有限公司 | Soil pressure in-situ testing device and testing method thereof |
| CN108760097A (en) * | 2018-02-28 | 2018-11-06 | 南京元感微电子有限公司 | A kind of load cell |
| CN109596258A (en) * | 2018-11-21 | 2019-04-09 | 河海大学 | A kind of reversible formula earth pressure gauge |
| CN111982360A (en) * | 2020-09-01 | 2020-11-24 | 辽宁大学 | Small-sized pressure sensing device for robot foot |
| CN112554950A (en) * | 2020-12-16 | 2021-03-26 | 四川高速公路建设开发集团有限公司 | Rapid burying device and construction method for tunnel soil pressure gauge to be in complete contact with stress surface |
| CN112554950B (en) * | 2020-12-16 | 2022-12-23 | 四川高速公路建设开发集团有限公司 | Rapid burying device and construction method for tunnel soil pressure gauge to be in complete contact with stress surface |
| CN113029417A (en) * | 2021-03-09 | 2021-06-25 | 三峡大学 | Small three-dimensional soil pressure cell suitable for soil deformation field test and model test |
| CN114018473A (en) * | 2021-11-16 | 2022-02-08 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Soil pressure sensor calibrating device |
| CN114018473B (en) * | 2021-11-16 | 2023-10-24 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Soil pressure sensor calibrating device |
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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: 20101006 Termination date: 20171214 |