CN104976988A - Tunnel large-elevation-difference settlement measuring system - Google Patents
Tunnel large-elevation-difference settlement measuring system Download PDFInfo
- Publication number
- CN104976988A CN104976988A CN201510410761.9A CN201510410761A CN104976988A CN 104976988 A CN104976988 A CN 104976988A CN 201510410761 A CN201510410761 A CN 201510410761A CN 104976988 A CN104976988 A CN 104976988A
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- liquid
- elevation
- sensitive element
- elastic pressure
- pressure sensitive
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- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000005259 measurement Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 description 9
- 230000002706 hydrostatic effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000004062 sedimentation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
- G01C5/04—Hydrostatic levelling, i.e. by flexibly interconnected liquid containers at separated points
Abstract
The invention discloses a tunnel large-elevation-difference settlement measuring system, which comprises a liquid source water tank holding a liquid, more than one liquid pressure sensors, and a communicating pipe communicating the liquid source water tank and each liquid pressure sensor. Each liquid pressure sensor comprises a housing and more than one elevation-difference blocks. The portion, communicating the communicating pipe, of the bottom of the housing is defined as a liquid feeding port, and the liquid feeding port is connected to a went valve. An elastic pressure-sensitive element is pressed on and covers the inner bottom of the housing and the upper part of the liquid feeding port, and one elevation-difference block is arranged on the elastic pressure-sensitive element. According to the system, a pressure compensation means is utilized; when settlement measurement of a tunnel is performed in an environment, the inner space of which is limited, liquid levels of the liquid pressure sensors don't need to be adjusted to be uniform; transfer of overmuch relative datums is reduced; and at the same time, the system isn't limited by the elevation of a measurement point, and the measurement difficulty is lowered.
Description
Technical field
The present invention relates to tunnel subsidence field of measuring technique, particularly the large difference of elevation settlement measurement in a kind of tunnel system.
Background technology
Settlement monitoring is an important Contents for Monitoring in building deformation monitoring, and settlement monitoring adopts rational instruments and methods to measure the variable quantity of buildings elevation in vertical direction, is embodied by the sedimentation of laying monitoring point.Regularly accurate settlement measurement is carried out to monitoring point, the cumulative settling amount of monitoring point, differential settlement, average sinking rate carry out analysis and prediction trend can be calculated, local relative tilt, amount of deflection etc. can be calculated further.
Precise leveling precision is high, and method is easy, and be the most popular method of settlement monitoring, the method affects little by observing environment, but affects by artificial measurement, can only do regular manual measurement.The conventional scale having precision level, electronic level and corresponding class requirement.Poor for leveling line line condition, measurement of the level is implemented to become very difficult, the Data Processing in Rigorous Trigonometric Leveling of electromagnetic distance measurement is utilized to be applied in settlement measurement, affect by artificial measurement equally, also can only do regular manual measurement, above two kinds of technology substantially compare based on phase measurement before and after construction, be applicable to the measurement of large sedimentation, and the later stage do regular measurement, later stage automatically real-time monitoring cannot be met.
The hydrostatic leveling of liquid was measured also referred to as communicating pipe, was to utilize to be interconnected, and liquid level during statical equilibrium carries out the measuring method of elevation transmission.The feature using hydrostatic level to measure in real time, be well suited for building the measurement of the small-range after stablizing of completing, but require that when laying each hydrostatic level liquid level is consistent, under the environment for large difference of elevation, needs multiple hydrostatic level to carry out the transmission of benchmark.
The real-time online of current tunnel subsidence detects usually to have been come by hydrostatic level, uses and is coupled together by each hydrostatic level communicating pipe, the liquid level of each hydrostatic level be made consistent.But due to the complexity of geologic structure in tunnel, elevation big rise and fall, inner space is limited, be difficult to meet each liquid level at a contour plane, and for tunnel more than distance slightly long hundred rice, need to lay multiple hydrostatic level, hardware facility complex structure, engineering construction strengthens, and measuring accuracy is lower.
Summary of the invention
The technical problem to be solved in the present invention is: when carrying out settlement measurement to the environment of the inherent space constraints such as tunnel, utilize pressure compensation means, make liquid-pressure pick-up consistent without the need to being adjusted to liquid level, reduce over the transmission of many relative datums, not limiting by measuring point height simultaneously, reducing and measuring difficulty.
The technical scheme that the present invention takes is specially: a kind of tunnel large difference of elevation settlement measurement system, comprises the liquid source water tank being loaded with liquid, more than 1 liquid-pressure pick-up, and is communicated with the communicating pipe of liquid source water tank and each liquid-pressure pick-up;
Above-mentioned each liquid-pressure pick-up comprises housing and more than one path difference block; The position that definition housing bottom connects pipe is fluid-through port, and fluid-through port is connected with vent valve; Cover flexible pressure-active element above housing inner bottom part, fluid-through port, path difference block is positioned on elastic pressure sensitive element.
Design concept of the present invention is: utilize that on elastic pressure sensitive element, to place path difference block poor to compensate elastic pressure sensitive element two-way pressure, thus make in settlement measurement process, the arrangement of sensor does not need to wait liquid level to install, and can be applicable in the relative settlement measurement environment of large difference of elevation.Path difference block of the present invention is the block with certain mass, the quantity of path difference block can be set to multiple, when liquid-pressure pick-up is arranged, offsetting the poor additonal pressure produced of liquid height by placing path difference block, making elastic pressure sensitive element two-way pressure be in equilibrium state.During measurement, when certain point has sedimentation, namely this liquid-pressure pick-up is poor relative to the liquid height of liquid source case changes, and now elastic pressure sensitive element two-way pressure difference changes, and exports corresponding differential pressure signal, can obtain settling amount further.Elastic pressure sensitive element can adopt existing product, as the condenser type, resistance-type, the optical profile type equal pressure sensor that extend based on flexible sheet.
When the liquid source of eminence and the pressure transducer difference of elevation in somewhere are H, (quality is m) to have added N number of path difference block above this pressure transducer, the pressure reduction up and down be at this time subject at sensitive element place is ρ gH-Nmg/S, wherein S is the compression area of elastic pressure sensitive element, as the elevation sinking Δ H at this pressure transducer place, the pressure reduction up and down that now sensitive element place is subject to is ρ g(H+ Δ H)-Nmg/S, can find out that the signal intensity that pressure-sensing device exports and settling amount have corresponding relation, the differential pressure signal that elastic pressure sensitive element exports after testing can obtain settling amount.
In the present invention, the quality of path difference block can set definite value as required, and defining minimum path difference between adjacent two liquid-pressure pick-ups is h, and the density of the compression area of elastic pressure sensitive element to be s, ρ be liquid, the quality m of above-mentioned path difference block is: m=ρ hS.For keeping the consistance of product, each liquid-pressure pick-up is when position, can arrange according to the integral multiple of the minimum path difference h of above-mentioned setting, make the difference of elevation between each liquid-pressure pick-up and liquid source case, it is the integral multiple of minimum path difference h, namely by means of only multiple path difference blocks of increase and decrease equal in quality, each liquid-pressure pick-up Elastic pressure-active element two-way pressure is balanced.
Further, Elastic pressure-active element of the present invention can take the sealing means such as welding, adhesion, and in order to make sealing more reliable, elastic pressure sensitive element lower portions pressurized is even, elastic pressure sensitive element covering shell inner bottom surface; Meanwhile, in order to make elastic pressure sensitive member upper pressurized even, path difference block is the uniform tabular of thickness, covers the elastic pressure sensitive element above fluid-through port.
Beneficial effect of the present invention is: the liquid level change brought by the increase and decrease balance difference of elevation of path difference block, make liquid-pressure pick-up when arranging, same level is positioned at without the need to arranging each liquid-pressure pick-up internal liquid level height, arrange difficulty greatly to reduce, not by the restriction of measuring point height, be applied in the relative settlement of large difference of elevation very convenient.
Accompanying drawing explanation
Figure 1 shows that present system structural representation.
Embodiment
Further describe below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, tunnel of the present invention large difference of elevation settlement measurement system, comprises liquid source water tank more than 1,1 liquid-pressure pick-up 2 being loaded with liquid, and is communicated with the communicating pipe of liquid source water tank 1 and each liquid-pressure pick-up 2; Be provided with tapping valve 3 communicating pipe.
Above-mentioned each liquid-pressure pick-up 2 comprises more than housing 21 and 1 path difference block 23; The position connecting pipe bottom definition housing 21 is fluid-through port, and fluid-through port is connected with vent valve 22; Housing 21 inner bottom part, fluid-through port upper seal are fixed with elastic pressure sensitive element 24, and path difference block 23 is positioned on elastic pressure sensitive element 24.
Embodiment
Path difference block is the block with certain mass, the quantity of path difference block is set to multiple, the quality of path difference block directly or as required can set definite value, defining minimum path difference between each liquid-pressure pick-up is h, the compression area of elastic pressure sensitive element is s, ρ is the density of liquid, and the quality m of above-mentioned path difference block is: m=ρ hS.For keeping the consistance of product, each liquid-pressure pick-up is when position, can arrange according to the integral multiple of the minimum path difference h of above-mentioned setting, namely by means of only multiple path difference blocks of increase and decrease equal in quality, each liquid-pressure pick-up Elastic pressure-active element two-way pressure be balanced.
In order to the sealing making elastic pressure sensitive element is more reliable, elastic pressure sensitive element lower portions pressurized evenly, the present embodiment Elastic pressure-active element covering shell inner bottom surface; Meanwhile, in order to make elastic pressure sensitive member upper pressurized even, path difference block is the uniform tabular of thickness, covers the elastic pressure sensitive element local be positioned at above fluid-through port.
Design concept of the present invention is: utilize that on elastic pressure sensitive element, to place path difference block poor to compensate elastic pressure sensitive element two-way pressure, thus make in settlement measurement process, the arrangement of sensor does not need to wait liquid level to install, and can be applicable in the relative settlement measurement environment of large difference of elevation.When liquid-pressure pick-up is arranged, offset increase or the minimizing of fluid pressure by increase and decrease path difference block, make elastic pressure sensitive element two-way pressure be in equilibrium state.During measurement, when certain point has sedimentation, namely this liquid-pressure pick-up is poor relative to the liquid height of liquid source case changes, and now elastic pressure sensitive element two-way pressure difference change then exports corresponding signal, and the signal after testing under this differential pressure signal and compensation balance state can obtain settling amount.
Claims (4)
1. the large difference of elevation settlement measurement in a tunnel system, is characterized in that, comprises the liquid source water tank being loaded with liquid, more than 1 liquid-pressure pick-up, and is communicated with the communicating pipe of liquid source water tank and each liquid-pressure pick-up;
Above-mentioned each liquid-pressure pick-up comprises housing and more than one path difference block; The position that definition housing bottom connects pipe is fluid-through port, and fluid-through port is connected with vent valve; Housing inner bottom part, fluid-through port upper seal are fixed with elastic pressure sensitive element, and path difference block is positioned on elastic pressure sensitive element.
2. the large difference of elevation settlement measurement in tunnel according to claim 1 system, it is characterized in that, the minimum difference of elevation between definition adjacent liquid pressure transducer is h, and the compression area of elastic pressure sensitive element is S, ρ is the density of liquid, and the quality m of path difference block is: m=ρ hS.
3. the large difference of elevation settlement measurement in tunnel according to claim 1 system, is characterized in that, elastic pressure sensitive element covering shell inner bottom surface.
4. the large difference of elevation settlement measurement in tunnel according to claim 1 system, is characterized in that, path difference block is the uniform tabular of thickness, covers the elastic pressure sensitive element above fluid-through port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410761.9A CN104976988B (en) | 2015-07-14 | 2015-07-14 | Tunnel large-elevation-difference sedimentation measurement system |
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| CN201510410761.9A CN104976988B (en) | 2015-07-14 | 2015-07-14 | Tunnel large-elevation-difference sedimentation measurement system |
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| CN104976988A true CN104976988A (en) | 2015-10-14 |
| CN104976988B CN104976988B (en) | 2024-03-01 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203080A (en) * | 2015-10-28 | 2015-12-30 | 石家庄铁道大学 | Roadbed settlement observation device and observation method thereof |
| CN105737796A (en) * | 2016-04-25 | 2016-07-06 | 苏州市建设工程质量检测中心有限公司 | Hydraulic leveling measurement system and measurement method thereof |
| CN108759781A (en) * | 2018-06-11 | 2018-11-06 | 武汉二航路桥特种工程有限责任公司 | The vertical displacement monitoring device and method of initial big height difference structure |
| CN110044331A (en) * | 2019-05-21 | 2019-07-23 | 广州市建筑科学研究院有限公司 | Contactless hydrostatic level, relative settlement monitor system and method |
| CN110044330A (en) * | 2019-04-26 | 2019-07-23 | 中铁十六局集团地铁工程有限公司 | A kind of tunnel roof surrounding rock displacement measuring device and method |
| CN110057345A (en) * | 2019-05-21 | 2019-07-26 | 广州市建筑科学研究院有限公司 | Contact hydrostatic level, relative settlement monitor system and method |
| CN113091696A (en) * | 2021-03-18 | 2021-07-09 | 中交四航局第五工程有限公司 | System and method for removing accumulated gas in liquid measurement pipeline |
| CN114234911A (en) * | 2021-12-09 | 2022-03-25 | 南京苏逸实业有限公司 | Ultrasonic sedimentation and horizontal displacement measuring device and measuring method utilizing Beidou for positioning |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203080A (en) * | 2015-10-28 | 2015-12-30 | 石家庄铁道大学 | Roadbed settlement observation device and observation method thereof |
| CN105203080B (en) * | 2015-10-28 | 2017-04-19 | 石家庄铁道大学 | Roadbed settlement observation device and observation method thereof |
| CN105737796A (en) * | 2016-04-25 | 2016-07-06 | 苏州市建设工程质量检测中心有限公司 | Hydraulic leveling measurement system and measurement method thereof |
| CN108759781A (en) * | 2018-06-11 | 2018-11-06 | 武汉二航路桥特种工程有限责任公司 | The vertical displacement monitoring device and method of initial big height difference structure |
| CN108759781B (en) * | 2018-06-11 | 2024-01-16 | 中交特种工程有限公司 | Vertical displacement monitoring device and method for initial large-height-difference structure |
| CN110044330A (en) * | 2019-04-26 | 2019-07-23 | 中铁十六局集团地铁工程有限公司 | A kind of tunnel roof surrounding rock displacement measuring device and method |
| CN110044331A (en) * | 2019-05-21 | 2019-07-23 | 广州市建筑科学研究院有限公司 | Contactless hydrostatic level, relative settlement monitor system and method |
| CN110057345A (en) * | 2019-05-21 | 2019-07-26 | 广州市建筑科学研究院有限公司 | Contact hydrostatic level, relative settlement monitor system and method |
| CN110057345B (en) * | 2019-05-21 | 2023-09-08 | 广州市建筑科学研究院有限公司 | Contact type static level, relative sedimentation monitoring system and method thereof |
| CN110044331B (en) * | 2019-05-21 | 2024-01-19 | 广州市建筑科学研究院有限公司 | Non-contact static level, relative sedimentation monitoring system and method thereof |
| CN113091696A (en) * | 2021-03-18 | 2021-07-09 | 中交四航局第五工程有限公司 | System and method for removing accumulated gas in liquid measurement pipeline |
| CN114234911A (en) * | 2021-12-09 | 2022-03-25 | 南京苏逸实业有限公司 | Ultrasonic sedimentation and horizontal displacement measuring device and measuring method utilizing Beidou for positioning |
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Inventor after: Chen Defeng Inventor after: Pan Rong Inventor after: Lu Yi Inventor after: Qian Hongwei Inventor after: Ju Yanbo Inventor after: Zhou Hao Inventor after: Gao Fei Inventor after: Zhang Lei Inventor after: Yu Wei Inventor after: Shan Ming Inventor after: Wang Yongqiang Inventor after: Gao Shengyu Inventor after: Tu Yue Inventor after: Zhang Shouyu Inventor after: Wang Chunning Inventor after: Liu Xiaodong Inventor after: Gu Chengyang Inventor after: Li Hongze Inventor after: Wang Guangming Inventor after: Zhang Tao Inventor after: Xue Hengsong Inventor before: Gao Shengyu Inventor before: Pan Rong Inventor before: Lu Yi Inventor before: Qian Hongwei Inventor before: Ju Yanbo Inventor before: Chen Defeng Inventor before: Liu Xiaodong Inventor before: Gu Chengyang Inventor before: Li Hongze Inventor before: Wang Guangming Inventor before: Wang Chunning Inventor before: Zhang Tao Inventor before: Xue Hengsong |
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Effective date of registration: 20160414 Address after: Nanjing City, Jiangsu province 210019 Olympic Avenue No. 1 Applicant after: JIANGSU NANJING POWER SUPPLY Co. Applicant after: State Grid Corporation of China Applicant after: JIANGSU ELECTRIC POWER Co. Applicant after: NANJING SUYI INDUSTRIAL Co.,Ltd. Applicant after: Shanghai Bandweaver Technologies Co.,Ltd. Address before: Nanjing City, Jiangsu province 210019 Olympic Avenue No. 1 Applicant before: State Grid Corporation of China Applicant before: JIANGSU ELECTRIC POWER Co. Applicant before: JIANGSU NANJING POWER SUPPLY Co. Applicant before: NANJING SUYI INDUSTRIAL Co.,Ltd. Applicant before: Shanghai Bandweaver Technologies Co.,Ltd. |
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