CN205262461U - Big depth displacement in tunnel subsides measurement system - Google Patents
Big depth displacement in tunnel subsides measurement system Download PDFInfo
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- CN205262461U CN205262461U CN201520506474.3U CN201520506474U CN205262461U CN 205262461 U CN205262461 U CN 205262461U CN 201520506474 U CN201520506474 U CN 201520506474U CN 205262461 U CN205262461 U CN 205262461U
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- 238000005259 measurement Methods 0.000 title claims abstract description 29
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000740 bleeding effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract 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
- 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
- 238000010586 diagram Methods 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
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a big depth displacement in tunnel subsides measurement system, it includes that the splendid attire has the liquid source water tank of liquid, 1 above fluid pressure sensor to and the communicating pipe of intercommunication liquid source water tank and each fluid pressure sensor, above -mentioned each fluid pressure sensor includes casing and more than one path difference piece, the position that communicating pipe is connected to definition casing bottom leads to the liquid mouth and is connected with discharge valve for leading to the liquid mouth, bottom, logical liquid mouth top cover flexible pressure -sensitive element in the casing, and the path difference piece is placed on the elasticity pressure -sensitive element. The utility model discloses utilize the pressure compensation means, when carrying out the settlement measurement to the limited environment of inner spaces such as tunnel for it is unanimous that the fluid pressure sensor need not to be adjusted into liquid level, reduces the transmission of too much relative benchmark, not restricted by the measuring point elevation simultaneously, reduces and measure the degree of difficulty.
Description
Technical field
The utility model relates to tunnel subsidence field of measuring technique, particularly the large depth displacement 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 instrument and method to measure the building variable quantity of elevation in vertical direction, embodies by the sedimentation of laying monitoring point. Regularly accurately settlement measurement is carried out in monitoring point, can calculate cumulative settling amount, differential settlement, the average settlement speed of monitoring point and carry out analysis and prediction trend, can further calculate local relative tilt, amount of deflection etc.
Precise leveling precision is high, and method is easy, is the most popular method of settlement monitoring, and it is little that the method is affected by observing environment, but affected by artificial measurement, can only do regular manual measurement. The conventional scale that has precision level, electronic level and corresponding class requirement. Poor for leveling line line condition, the measurement of the level is implemented to become very difficult, utilize the Data Processing in Rigorous Trigonometric Leveling of electromagnetic distance measurement to be applied in settlement measurement, affected by artificial measurement, also can only do regular manual measurement, above two kinds of technology substantially measure relatively based on the phase before and after construction, be applicable to the measurement of large sedimentation, and the later stage do regular measurement, cannot meet automatically real-time monitoring of later stage.
The hydrostatic leveling of liquid was measured also referred to as communicating pipe, is to utilize to be interconnected, and the liquid level when standing balance measuring method of carrying out elevation transmission. Using the feature of hydrostatic level is to measure in real time, the small-range being well suited for after building completion is stablized is measured, but in the time laying each hydrostatic level, require liquid level consistent, under the environment for large depth displacement, need multiple hydrostatic levels to carry out the transmission of benchmark.
The real-time online of tunnel subsidence detects and is conventionally completed by hydrostatic level at present, uses and communicating pipe each hydrostatic level is coupled together, and make the liquid level of each hydrostatic level 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 slightly tunnel more than long hundred rice of distance, need to lay multiple hydrostatic levels, hardware facility complex structure, engineering construction strengthens, and certainty of measurement is lower.
Utility model content
The technical problems to be solved in the utility model is: in the time that the inner space constrained environments such as tunnel are carried out to settlement measurement, utilize pressure compensation means, make liquid-pressure pick-up consistent without being adjusted into liquid level, reduce the transmission of too much relative datum, do not measured point height and limited, reduce and measure difficulty simultaneously.
The technical scheme that the utility model is taked is specially: a kind of tunnel large depth displacement settlement measurement system, comprises the liquid source water tank that is loaded with liquid, more than 1 liquid-pressure pick-up, and the communicating pipe of connection 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 piece; The position that definition housing bottom connects pipe is fluid-through port, and fluid-through port is connected with air bleeding valve; Housing inner bottom part, fluid-through port top cover flexible pressure cell, and path difference piece is positioned on elasticity pressure cell.
The utility model design principle is: utilization is placed path difference piece and compensated the upper and lower pressure differential of elasticity pressure cell on elasticity pressure cell, thereby 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 depth displacement. Path difference piece described in the utility model is the block with certain mass, the quantity of path difference piece can be set to multiple, in the time that liquid-pressure pick-up is arranged, offset poor the produced additonal pressure of liquid height by placing path difference piece, make on elasticity pressure cell downforce in poised state. When measurement, in the time that certain point has sedimentation, this liquid-pressure pick-up changes with respect to the liquid height of liquid source case is poor, and now the upper and lower pressure differential of elasticity pressure cell changes and exports corresponding pressure differential signal, can further obtain settling amount. Elasticity pressure cell can adopt existing product, as taking flexible sheet as basic extended condenser type, resistance-type, optical profile type equal pressure sensor.
When the liquid source of eminence and the pressure sensor depth displacement in somewhere are H, (quality is m) above this pressure sensor, to have added N path difference piece, the pressure reduction up and down being at this time subject at sensing element place is ρ gH-Nmg/S, wherein S is the compression area of elasticity pressure cell, in the time of the elevation sinking Δ H at this pressure sensor place, the pressure reduction up and down that now sensing element place is subject to is ρ g(H+ Δ H)-Nmg/S, signal intensity and the settling amount that can find out pressure-sensing device output have corresponding relation, the pressure differential signal of elasticity pressure cell output can obtain settling amount after testing.
In the utility model, the quality of path difference piece can be set definite value as required, and defining minimum path difference between adjacent two liquid-pressure pick-ups is h, and the compression area of elasticity pressure cell is s, the density that ρ is liquid, and the quality m of above-mentioned path difference piece is: m=ρ hS. For keeping the uniformity of product, each liquid-pressure pick-up is in the time of position, can arrange according to the integral multiple of the minimum path difference h of above-mentioned setting, make the depth displacement between each liquid-pressure pick-up and liquid source case, it is the integral multiple of minimum path difference h, only by multiple path difference pieces of increase and decrease equal in quality, make pressure balance on each liquid-pressure pick-up Elastic pressure cell.
Further, the utility model Elastic pressure cell can be taked the sealing means such as welding, adhesion, and in order to make sealing more reliable, elasticity pressure cell bottom pressurized is even, elasticity pressure cell covering shell inner bottom surface; Meanwhile, in order to make elasticity pressure cell upper portion pressurized even, what path difference piece was even thickness is tabular, covers the elasticity pressure cell of fluid-through port top.
The beneficial effects of the utility model are: the liquid level bringing by the increase and decrease balance depth displacement of path difference piece changes, make liquid-pressure pick-up in the time arranging, without being set, the inner liquid level of each liquid-pressure pick-up is positioned at same level, difficulty is set to be reduced greatly, do not measured the restriction of point height, be applied in the relative settlement of large depth displacement very convenient.
Brief description of the drawings
Figure 1 shows that the utility model system architecture schematic diagram.
Detailed description of the invention
Further describe below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, tunnel of the present utility model large depth displacement settlement measurement system, comprises more than 1,1 liquid-pressure pick-up 2 of liquid source water tank that is loaded with liquid, and is communicated with the communicating pipe of liquid source water tank 1 and each liquid-pressure pick-up 2; On communicating pipe, be provided with tapping valve 3.
Above-mentioned each liquid-pressure pick-up 2 comprises more than 21 and 1 the path difference piece 23 of housing; The position that definition housing 21 bottoms connect pipe is fluid-through port, and fluid-through port is connected with air bleeding valve 22; Housing 21 inner bottom parts, the sealing of fluid-through port top are fixed with elasticity pressure cell 24, and path difference piece 23 is positioned on elasticity pressure cell 24.
Embodiment
Path difference piece is the block with certain mass, the quantity of path difference piece is set to multiple, the quality of path difference piece can directly or as required be set definite value, defining minimum path difference between each liquid-pressure pick-up is h, the compression area of elasticity pressure cell is s, ρ is the density of liquid, and the quality m of above-mentioned path difference piece is: m=ρ hS. For keeping the uniformity of product, each liquid-pressure pick-up is in the time of position, can arrange according to the integral multiple of the minimum path difference h of above-mentioned setting,, only by multiple path difference pieces of increase and decrease equal in quality, make pressure balance on each liquid-pressure pick-up Elastic pressure cell.
In order to make the sealing of elasticity pressure cell more reliable, elasticity pressure cell bottom pressurized is more even, the present embodiment Elastic pressure cell covering shell inner bottom surface; Meanwhile, in order to make elasticity pressure cell upper portion pressurized even, what path difference piece was even thickness is tabular, covers the elasticity pressure cell part that is positioned at fluid-through port top.
The utility model design principle is: utilization is placed path difference piece and compensated the upper and lower pressure differential of elasticity pressure cell on elasticity pressure cell, thereby 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 depth displacement. In the time that liquid-pressure pick-up is arranged, offset increase or the minimizing of fluid pressure by increase and decrease path difference piece, make on elasticity pressure cell downforce in poised state. When measurement, in the time that certain point has sedimentation, this liquid-pressure pick-up changes with respect to the liquid height of liquid source case is poor, and now the upper and lower pressure differential of elasticity pressure cell changes and exports corresponding signal, and the signal under this pressure differential signal and compensation balance state can obtain settling amount after testing.
Claims (4)
1. the large depth displacement settlement measurement in a tunnel system, is characterized in that, comprises the liquid source water tank that is loaded with liquid, more than 1 liquid-pressure pick-up, and the communicating pipe of connection 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 piece; The position that definition housing bottom connects pipe is fluid-through port, and fluid-through port is connected with air bleeding valve; Housing inner bottom part, the sealing of fluid-through port top are fixed with elasticity pressure cell, and path difference piece is positioned on elasticity pressure cell.
2. the large depth displacement settlement measurement in tunnel according to claim 1 system, it is characterized in that, the minimum depth displacement between definition adjacent liquid pressure sensor is h, and the compression area of elasticity pressure cell is S, ρ is the density of liquid, and the quality m of path difference piece is: m=ρ hS.
3. the large depth displacement settlement measurement in tunnel according to claim 1 system, is characterized in that, elasticity pressure cell covering shell inner bottom surface.
4. the large depth displacement settlement measurement in tunnel according to claim 1 system, is characterized in that, what path difference piece was even thickness is tabular, covers the elasticity pressure cell of fluid-through port top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520506474.3U CN205262461U (en) | 2015-07-14 | 2015-07-14 | Big depth displacement in tunnel subsides measurement system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520506474.3U CN205262461U (en) | 2015-07-14 | 2015-07-14 | Big depth displacement in tunnel subsides measurement system |
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| Publication Number | Publication Date |
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| CN205262461U true CN205262461U (en) | 2016-05-25 |
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| CN201520506474.3U Active CN205262461U (en) | 2015-07-14 | 2015-07-14 | Big depth displacement in tunnel subsides measurement system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976988A (en) * | 2015-07-14 | 2015-10-14 | 国家电网公司 | Tunnel large-elevation-difference settlement measuring system |
| CN107036580A (en) * | 2017-04-15 | 2017-08-11 | 中铁二院工程集团有限责任公司 | A kind of simple subgrade settlement automated watch-keeping facility and monitoring method |
| 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 |
| CN110044324A (en) * | 2018-01-15 | 2019-07-23 | 北京纳微时代科技有限公司 | The self-bleeding method of vertical survey system |
| CN111366131A (en) * | 2020-04-15 | 2020-07-03 | 湖州市南浔创业测绘与土地规划院股份有限公司 | House settlement monitoring method |
-
2015
- 2015-07-14 CN CN201520506474.3U patent/CN205262461U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976988A (en) * | 2015-07-14 | 2015-10-14 | 国家电网公司 | Tunnel large-elevation-difference settlement measuring system |
| CN104976988B (en) * | 2015-07-14 | 2024-03-01 | 江苏省电力公司南京供电公司 | Tunnel large-elevation-difference sedimentation measurement system |
| CN107036580A (en) * | 2017-04-15 | 2017-08-11 | 中铁二院工程集团有限责任公司 | A kind of simple subgrade settlement automated watch-keeping facility and monitoring method |
| CN110044324A (en) * | 2018-01-15 | 2019-07-23 | 北京纳微时代科技有限公司 | The self-bleeding method of vertical survey system |
| 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 |
| CN111366131A (en) * | 2020-04-15 | 2020-07-03 | 湖州市南浔创业测绘与土地规划院股份有限公司 | House settlement monitoring method |
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