CN203908552U - Surface subsidence leveling measuring and monitoring device - Google Patents
Surface subsidence leveling measuring and monitoring device Download PDFInfo
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- CN203908552U CN203908552U CN201420216980.4U CN201420216980U CN203908552U CN 203908552 U CN203908552 U CN 203908552U CN 201420216980 U CN201420216980 U CN 201420216980U CN 203908552 U CN203908552 U CN 203908552U
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- level
- mark
- monitoring device
- leveling
- protective seam
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Abstract
The utility model discloses a surface subsidence leveling measuring and monitoring device. The device comprises a leveling markstone provided with a leveling mark and further comprises a protective layer matched with the leveling markstone and used for sleeving the periphery of the leveling markstone, wherein when the protective layer sleeves the periphery of the leveling markstone, a space is reserved between the protective layer and the leveling markstone; the protective layer is a cement protective barrel; the leveling markstone comprises a base and a vertical column connected with the base; the vertical column stands on the base vertically; the protective layer is matched with the periphery of the vertical column; a space between the protective layer and the periphery of the vertical column is packed with a buffering layer; the bottom of the protective layer is flush with the top of the base; the top of the protective layer is higher than that of the vertical column; the protruding part isn't packed with the buffering layer; the top of the protective layer is covered by a top cover; the buffering layer is a fine sand layer. According to the utility model, not only can the device effectively overcome the difficulties that the leveling markstone is damaged due to earth surface level deformation or soil layer lateral extrusion force, but also the vertical change features of the earth surface can be obtained, so that the surface subsidence measuring value is more accurate.
Description
Technical field
The utility model relates to geologic survey monitoring technical field, particularly relates to a kind of land subsidence measurement of the level monitoring device.
Background technology
Land subsidence refers under nature and human factor effect, and the upper and lower viscous soil horizon Pore Water Pressure Drop in water-bearing zone, causes the fixed dehydration of viscous soil horizon, produces soil body compression, the environmental geology phenomenon that the regional ground absolute altitude of formation reduces.At present, the monitoring method of land subsidence mainly contains precise leveling, GPS measurement, InSAR measures and base-rock marker-layering mark is measured.Every kind of monitoring technology has feature separately, and wherein precise leveling is between 2, to lay spirit-leveling instrument on the ground, observes 2 upper levelling staffs of erectting, and according to the reading on levelling staff, asks for the high difference between 2.Normally set out at the point of base leveling origin or a certain known height value, measure the discrepancy in elevation between each point according to the LEVELING CIRCUITS of choosing by station, thereby try to achieve the elevation on each point.Then this point height value of measuring with the last time compares and does poor processing, and then to try to achieve the elevation variable quantity during twice measurement of the level on this aspect be ground settlement.
The design of measurement of the level point and method for embedding are significant for the variation of correct measurement land subsidence.In land subsidence measurement of the level, first to choose monitoring site, then carry out the work of burying underground of level mark, in order to monitor the situation of change of this regional land subsidence.Common level mark comprises concrete level mark and steel pipe level mark.But being applied in, these two kinds of level marks in Ground Subsidence Monitoring, have its common defect: land subsidence changes that to have more than be the variation of vertical one dimension, but has the three-dimensional deformation feature of Horizontal Deformation and VERTICAL DEFORMATION.And these two kinds of level marks are only considered the VERTICAL DEFORMATION on earth's surface and have been ignored Horizontal Deformation or the deformation of soil layer lateral compression, in the time of earth's surface occurred level deformation or the deformation of soil layer lateral compression, can cause that level mark topples over, cause the destruction of level mark, cause measuring ground settlement or measured value is inaccurate.
Utility model content
The technical problems to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of and can effectively overcome the level mark breakoff phenomenon causing because of earth's surface Horizontal Deformation or soil layer lateral compression power, can obtain again the land subsidence measurement of the level monitoring device of Ground Deformation Vertical Variation Characteristic simultaneously.
For solving the problems of the technologies described above; the utility model provides a kind of land subsidence measurement of the level monitoring device; comprise the level mark with bench mark; also comprise with described level mark supporting, for being enclosed within the protective seam of level mark periphery; when described protective seam is enclosed within level mark periphery, between protective seam and level mark, can leave space.
As further improvement, described protective seam is cement protection cylinder.
As further improvement, the column that described level mark comprises pedestal and is connected with pedestal, column vertically stands on pedestal; Described protective seam coordinates with column is peripheral, and space is between the two filled with cushion.
Further improve, the bottom of described protective seam flushes with described pedestal top, and the top of described protective seam is higher than the top of described column, and the raised area is not filled cushion.
Further improve, the top of described protective seam is coated with top cover.
Further improve, described cushion is fine sand layer.
Further improve, described level mark is the common level mark of steel pipe, column is not less than by external diameter that 6cm, pipe thickness are not less than the steel pipe of 0.5cm and the concrete that is poured in steel pipe forms, pedestal is concrete pedestal, described bench mark is made up of copper or stainless metal, be embedded in the central authorities of level mark end face, bench mark top exceeds level mark end face.
Further improve, described steel tube surface is coated with one deck pitch or emulsified asphalt varnish.
Adopt technique scheme; the advantage the utlity model has: because the periphery at level mark adds protective seam; between protective seam and level mark, leave space; can effectively protect level mark not to be subject to the impact of earth's surface Horizontal Deformation or soil layer lateral compression power; level mark is used more permanent, subsidence monitoring value is more accurate.
Brief description of the drawings
Above-mentioned is only the general introduction of technical solutions of the utility model, and in order to better understand technological means of the present utility model, below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Fig. 1 is the structural representation of a kind of land subsidence measurement of the level of the utility model monitoring device.
Embodiment
The leveling point of building is the common level mark of steel pipe.The common level mark of steel pipe is not less than by the external diameter of bench mark steel pipe and the concrete pedestal that 6cm, pipe thickness be not less than 0.5cm by upper end and forms, and steel pipe vertically stands on concrete pedestal.Visible with reference to accompanying drawing 1, the steel pipe 3 that the common level mark of steel pipe is 11cm by concrete pedestal 4 with the vertical external diameter that stands on concrete pedestal 4 forms.Concrete pedestal 4 is up-small and down-big bucking ladder, and bucking ladder height is 40cm, and the upper surface length of side is 30cm, and the lower surface length of side is 40cm, and the height that steel pipe 3 exposes pedestal 4 is 50cm.For make steel pipe 3 more firm with concrete pedestal 4 combinations, the reinforcing bar root network 7 of two long 25cm is housed at the about 10cm place, bottom of steel pipe part that inserts pedestal 4.In the interior employing concreting of steel pipe 3.In order to extend the serviceable life of steel pipe, can also be coated with one deck pitch or emulsified asphalt varnish 12 on steel pipe 3 surfaces.It is copper or stainless metal bench mark 2 that the central authorities of level mark end face embed a ball portion.Bench mark 2 must be laid honest, splices firmly, and its top should exceed markstone end face 1～2cm.
In the present embodiment, level mark material materials table and concrete construction require as follows:
Concrete material therefor should meet the following requirements:
A. the cement mark adopting should be not less than 425.When making the markstone that not affected by freeze thawing, should preferentially adopt slag and volcano grey matter cement, must not use pulverized fuel ash cement.When the markstone that making is affected by freeze thawing, should use Portland cement.In the time that making is subject to saline and alkaline, seawater or industrial sewage to corrode regional markstone, must use sulphate-resistant cement;
B. stone adopts natural pebble or the hard rubble of 0.5～4cm that grating is qualified, should not adopt the stone of same size;
C. sand adopts the medium sand of 0.015～0.3cm particle diameter, and silt content must not exceed 3%;
D. clean fresh water for hydromining, sulphates content must not exceed 1%;
E. additive can be selected according to construction environment, and as early strength agent, freeze-point depressant, water reducer, air entraining agent etc., its quality should meet respective specified.To joining reinforced concrete or steel pipe markstone, must not use the additive containing villaumite.
A kind of land subsidence measurement of the level of the utility model monitoring device is in order effectively to overcome the level mark breakoff phenomenon causing because of earth's surface Horizontal Deformation or soil layer lateral compression power, obtain Ground Deformation Vertical Variation Characteristic simultaneously, cement protection cylinder 10 is set in the periphery of above-mentioned steel pipe level mark, the bottom of cement protection cylinder 10 flushes with above-mentioned concrete pedestal 4 tops, its top is higher than the top of above-mentioned steel pipe 3, between cement protection cylinder 10 and steel pipe 3, fill fine sand 11, to play the effect of buffering earth's surface Horizontal Deformation or soil layer lateral compression power, the raised area is not filled fine sand 11.The top of cement protection cylinder 10 covers with cement top cover 1, and cement top cover 1 flushes with natural ground 9, and cement top cover 1 does not contact with the bench mark 2 of steel pipe level mark.
A kind of land subsidence measurement of the level of the utility model monitoring device burial and construction operation is as follows:
(1) first dig a dark 150cm, the dell of wide 60cm left and right;
(2) with beetle, bottom is tamped, then done bed course with rubble, pour fine sand 8 into blind, make the height of bottom reach 30cm;
(3) after compacting bottom, put into prefabricated level mark, the end face of level mark has 30cm apart from natural ground, level correction level mark;
(4) proofreaied and correct after level mark, reclaimed soil 5, to the top of concrete pedestal 4, is tamped soil 5;
(5) put into cement protection cylinder 10, at cement protection cylinder 10 outside reclaimed soils;
(6) protect cylinder 10 inner backfill fine sands 11 to level mark end face at cement;
(7) carry out the cleaning work of leveling point mark, cover cement top cover 1, put in order on-the-spot.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection domain of the present utility model.
Claims (8)
1. a land subsidence measurement of the level monitoring device; comprise the level mark with bench mark; the column that described level mark comprises pedestal and is connected with pedestal; described column vertically stands on pedestal; it is characterized in that; described land subsidence measurement of the level monitoring device also comprise with described level mark supporting, for being enclosed within the protective seam of level mark periphery, described protective seam is enclosed within level mark when peripheral, between protective seam and level mark, can leave space.
2. land subsidence measurement of the level monitoring device according to claim 1, is characterized in that, described protective seam is cement protection cylinder.
3. land subsidence measurement of the level monitoring device according to claim 1, is characterized in that, described protective seam coordinates with column is peripheral, and space is between the two filled with cushion.
4. land subsidence measurement of the level monitoring device according to claim 3, is characterized in that, the bottom of described protective seam flushes with described pedestal top, and the top of described protective seam is higher than the top of described column, and the raised area is not filled cushion.
5. land subsidence measurement of the level monitoring device according to claim 4, is characterized in that, the top of described protective seam is coated with top cover.
6. according to the land subsidence measurement of the level monitoring device described in claim 3,4 or 5, it is characterized in that, described cushion is fine sand layer.
7. according to the land subsidence measurement of the level monitoring device described in claim 3,4 or 5, it is characterized in that, described level mark is the common level mark of steel pipe, column is not less than by external diameter that 6cm, pipe thickness are not less than the steel pipe of 0.5cm and the concrete that is poured in steel pipe forms, pedestal is concrete pedestal, described bench mark is made up of copper or stainless metal, is embedded in the central authorities of level mark end face, and bench mark top exceeds level mark end face.
8. land subsidence measurement of the level monitoring device according to claim 7, is characterized in that, described steel tube surface is coated with one deck pitch or emulsified asphalt varnish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420216980.4U CN203908552U (en) | 2014-04-30 | 2014-04-30 | Surface subsidence leveling measuring and monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420216980.4U CN203908552U (en) | 2014-04-30 | 2014-04-30 | Surface subsidence leveling measuring and monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN203908552U true CN203908552U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420216980.4U Expired - Fee Related CN203908552U (en) | 2014-04-30 | 2014-04-30 | Surface subsidence leveling measuring and monitoring device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536057A (en) * | 2014-12-30 | 2015-04-22 | 山东科技大学 | Method for monitoring relative gravity of surface subsidence in coal mining process |
| CN105401589A (en) * | 2015-11-18 | 2016-03-16 | 中国地质大学（武汉） | Global position system (GPS) monitoring pier for frozen soil areas and swelling soil areas and construction process thereof |
| CN105526925A (en) * | 2015-11-09 | 2016-04-27 | 北京市水文地质工程地质大队 | Method for optimized designing of regional land subsidence level monitoring network |
| CN107063178A (en) * | 2017-04-21 | 2017-08-18 | 中水北方勘测设计研究有限责任公司 | A kind of concrete level mark for installing displacement transducer and its elevation observation and computational methods |
| CN111256672A (en) * | 2020-03-17 | 2020-06-09 | 中铁第四勘察设计院集团有限公司 | Marking device |
-
2014
- 2014-04-30 CN CN201420216980.4U patent/CN203908552U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536057A (en) * | 2014-12-30 | 2015-04-22 | 山东科技大学 | Method for monitoring relative gravity of surface subsidence in coal mining process |
| CN105526925A (en) * | 2015-11-09 | 2016-04-27 | 北京市水文地质工程地质大队 | Method for optimized designing of regional land subsidence level monitoring network |
| CN105401589A (en) * | 2015-11-18 | 2016-03-16 | 中国地质大学（武汉） | Global position system (GPS) monitoring pier for frozen soil areas and swelling soil areas and construction process thereof |
| CN107063178A (en) * | 2017-04-21 | 2017-08-18 | 中水北方勘测设计研究有限责任公司 | A kind of concrete level mark for installing displacement transducer and its elevation observation and computational methods |
| CN107063178B (en) * | 2017-04-21 | 2023-04-14 | 中水北方勘测设计研究有限责任公司 | Concrete leveling markstone with displacement sensor and elevation observation and calculation method thereof |
| CN111256672A (en) * | 2020-03-17 | 2020-06-09 | 中铁第四勘察设计院集团有限公司 | Marking 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 |
Granted publication date: 20141029 Termination date: 20150430 |
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| EXPY | Termination of patent right or utility model |