CN104032719A - Dam seepage pressure measuring device - Google Patents
Dam seepage pressure measuring device Download PDFInfo
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- CN104032719A CN104032719A CN201410094179.1A CN201410094179A CN104032719A CN 104032719 A CN104032719 A CN 104032719A CN 201410094179 A CN201410094179 A CN 201410094179A CN 104032719 A CN104032719 A CN 104032719A
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- hole
- top end
- dam seepage
- pressure measuring
- piezometer tube
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Abstract
The invention relates to a dam seepage pressure measuring device. The dam seepage pressure measuring device comprises pressure measuring tubes with top end covers, pressure gages connected with the top end covers and osmotic pressure gauges hung in the pressure measuring tubes, wherein first through holes are formed in the top end covers, cables connected with the osmotic pressure gauges pass through the first through holes and extend to the exteriors of the pressure measuring tubes, inner thread blind holes which are respectively opened towards the pressure measuring tubes are formed in the top end covers, bolts are respectively screwed in the inner thread blind holes, the precession depth of a threaded rod portion of each bolt in each inner thread blind hole is less than the maximum designed screwing depth of each inner thread blind hole, a suspending cable is arranged at the bottom of each bolt, and the bottom of each suspending cable is fixed on each osmotic pressure gauge. According to the dam seepage pressure measuring device, the number of the pressure measuring tubes, which need to be sealed, is decreased, the bolts are virtually connected in the inner thread blind holes and matched with gauge points, and therefore adjustment workload is greatly reduced, and adjustment accuracy is improved.
Description
Technical field
The present invention relates to a kind of dam seepage pressure tester, belong to hydraulic engineering field.
Background technology
China's dykes and dams One's name is legion, its whether safe security of the lives and property that is related to the downstream people, and affect the important evidence that embankment safety is analyzed---measurement and real-time grasp that in dam body, can phreatic line data reliable and stable seem very urgent.Regulation according to existing " Code for design of levee projects " GB50286-98 of hydraulic engineering and " rolling earth-rock dam design specifications " SL274-2001: in order to monitor the safe operation of dyke and earth and rockfill dam, the dam that the dyke of rank more than 2 grades and rank are greater than more than 30m at 3 grades and 4 grades, 5 grades heights of dam all should arrange seepage flow observation facility, to observe at any time and grasp the pore pressure of dam seepage line and the dam foundation.Traditional method is to make a call to a well that bore is very little every a segment distance on the cross section of dam in practice, piezometer tube is inside set again, then measure hydraulic pressure in piezometer tube and seepage pressure to obtain measured data, some larger dam bodys all can be provided with observation gallery, and aforementioned piezometer tube is arranged in observation gallery for technician's observation.
Pressure tester is the important component part of seepage flow observation system, as shown in Figure 1, traditional manometer by piezometer tube, be connected to tee piece on piezometer tube, osmometer, pressure meter and form for end socket of shutoff etc.Piezometer tube is made up of real pipe, permeable floral tube and sediment tube.The position that tradition piezometer tube need to seal is more, not only sealing technology is had high requirements, and has increased the probability that piezometer tube breaks down, deviation appears in measured value.
In addition, tradition osmometer is fixed by the cable through mouth of pipe hole, lax with aperture as time goes by, very easily there is loosening distortion in cable, thereby changing, the absolute altitude that causes osmometer affects the accuracy of survey data, under dam body site environment and be not easy to the cable length in piezometer tube to carry out correction adjustment, can only be by whole piezometer tube replacing, waste time and energy and also caused waste economically.
Summary of the invention
The technical problem to be solved in the present invention is: proposes one and can reduce piezometer tube number of seals, and the dam seepage pressure tester that can conveniently finely tune osmometer absolute altitude after long-term use.
The present invention is that the technical scheme that solves the problems of the technologies described above proposition is: a kind of dam seepage pressure tester, comprise the piezometer tube that is provided with top end cover, be connected to the pressure meter on described top end cover and be suspended in the osmometer in described piezometer tube by hoist cable, on described top end cover, offer the first through hole, the cable being connected with described osmometer passes described the first through hole and extends to the outside of described piezometer tube, on described top end cover, offer the blind screw hole of opening towards described piezometer tube direction, in described tapped blind hole, be bolted with bolt, the design maximum that the precession degree of depth of the threaded shank of described bolt in described tapped blind hole is less than described tapped blind hole screws the degree of depth, described hoist cable top is connected to the bottom of described bolt, the bottom of hoist cable is fixed on described osmometer.
The invention has the beneficial effects as follows:
For the ease of in the time safeguarding, osmometer place elevation being regulated, inventor dexterously by the bolt virtual connection for fixing hoist cable at tapped blind hole, and join with gauge point.In the time regulating, the distance that constructor can regulate as required calculates need to rotate a few circle bolts, has greatly simplified adjusting workload in the future, has also improved the precision regulating.Inventor has just solved traditional piezometer tube by a simple device difficult problem that accurate adjusting can only whole replacing has been occurred to be difficult for after loosening distortion cable.The present invention is also by reducing the quantity that needs sealing in piezometer tube, by shared to the osmometer in a traditional piezometer tube and pressure meter pipeline, not only saved tubing and also reduced the possibility of seal failure.
Having improved of technique scheme:
Further, offer the second through hole on described top end cover, described pressure meter is connected to described the second through hole by pipe connecting piece.
Further, in described threaded shank, offer perpendicular to its axial third through-hole, the other end of described hoist cable passes described third through-hole and stretches out, and is also arranged with nut in described threaded shank, and the end face compressing of described nut is on the surface of described hoist cable extension from third through-hole.
Further, described pipe connecting piece is made up of tee piece, union coupling, by-pass valve control and draining tap, supervisor one end on described tee piece is connected to described the second through hole by union coupling, described supervisor's the other end is connected with described by-pass valve control by union coupling, described by-pass valve control is connected with pressure meter by union coupling, and described draining tap is arranged on the arm exit of described tee piece.
Further, the edge of described top end cover is provided with the outer skirt that a circle extends towards piezometer tube direction, between described outer skirt and described piezometer tube, is threaded connection.
Further, described the first through hole is counter sink, on the reaming section inwall of described counter sink, attack internal thread, in described reaming section, be provided with sealing ring, described cable passes from described sealing ring, described sealing ring top is provided with compact heap, on described compact heap outer wall, has attacked external screw thread, and described compact heap is screwed onto in described reaming section and tightly suppresses described sealing ring.
Further, the head place of described bolt is provided with gauge point, and the pitch in the pitch in described tapped blind hole and described threaded shank is 1mm.
Brief description of the drawings
Below in conjunction with accompanying drawing, the dam seepage pressure tester in the present invention is described further.
Fig. 1 is the structural representation of traditional piezometer tube device mentioned in background technology.
Fig. 2 is the structural representation of pressure tester in the present invention.
Fig. 3 is the structural representation of top end cover in the present invention.
Detailed description of the invention
Embodiment
Shown in Fig. 2 and Fig. 3, in the present invention, dam seepage pressure tester comprises piezometer tube 1, top end cover 2, pressure meter 3 and osmometer 4.
Wherein, top end cover 2 is for covering at piezometer tube 1 top open part, and the edge of top end cover 2 is provided with a circle and extends and for being enclosed within the outer skirt 5 on piezometer tube 1 surface, between outer skirt 5 and piezometer tube 1, be threaded connection towards piezometer tube 1 direction.Top end cover 2 is provided with the first through hole 7 and the second through hole 6.
Wherein, pressure meter 3 is positioned at the outside of piezometer tube 1 and is connected to the second through hole 6 by pipe connecting piece.Pipe connecting piece is made up of tee piece 14, union coupling, by-pass valve control and draining tap, on tee piece 14, one end of supervisor is connected to the second through hole 6 by union coupling, supervisor's the other end is connected with by-pass valve control by union coupling, by-pass valve control is connected with pressure meter 3 by union coupling, and draining tap is arranged on the Zhi Guanduan of tee piece 14.
On top end cover 2, offer the blind screw hole 8 of opening towards piezometer tube 1, in blind screw hole 8, be bolted with bolt 9, osmometer 4 is hung and is located in piezometer tube 1 by hoist cable, the bottom of hoist cable is fixed on osmometer 4, hoist cable top is connected to the bottom of bolt 9, in threaded shank, offer perpendicular to its axial third through-hole, the other end of hoist cable passes from third through-hole, in threaded shank, be arranged with the rotatable nut 10 that work moves linearly simultaneously, nut 10 moves rear end face compressing on the hoist cable surface of stretching out from third through-hole and hoist cable is formed spacing.
The first through hole 7 is counter sink, and the reaming section inwall of counter sink is provided with internal thread, and reaming section is provided with sealing ring 12, and sealing ring 12 tops are provided with compact heap 13, on compact heap 13 outer walls, are shaped with external screw thread, and compact heap 13 is screwed onto in reaming section and tightly suppresses sealing ring 12.The cable being connected with osmometer 4 passes and forms sealing from sealing ring 12.Hoist cable has been adopted steel wire and has been made in the present embodiment, also can select according to actual needs the material that is difficult for deforming to make.
The design maximum that the precession degree of depth of the threaded shank of bolt 9 in blind screw hole 8 is less than blind screw hole 8 screws the degree of depth.Do like this and be convenient to the elevation of osmometer 4 be regulated in the future, in the time of turn bolt 9, can finely tune up and down the elevation of osmometer 4.Head 11 places of bolt 9 are provided with gauge point in the present embodiment, pitch in blind screw hole 8 and threaded shank is 1mm, in the time regulating, turn bolt 9 by instrument and can learn that bolt 9 advances or retreats 1mm, is convenient in the time safeguarding, the elevation of osmometer 4 be regulated when gauge point revolves while turning around.
The present invention is not limited to above-described embodiment, and all employings are equal to replaces the technical scheme forming, and all drops in the protection domain of requirement of the present invention.
Claims (7)
1. a dam seepage pressure tester, comprise the piezometer tube that is provided with top end cover, be connected to the pressure meter on described top end cover and be suspended in the osmometer in described piezometer tube by hoist cable, on described top end cover, offer the first through hole, the cable being connected with described osmometer passes described the first through hole and extends to the outside of described piezometer tube, it is characterized in that: on described top end cover, offer the blind screw hole of opening towards described piezometer tube direction, in described tapped blind hole, be bolted with bolt, the design maximum that the precession degree of depth of the threaded shank of described bolt in described tapped blind hole is less than described tapped blind hole screws the degree of depth, the top of described hoist cable is connected to the bottom of described bolt, the bottom of hoist cable is fixed on described osmometer.
2. dam seepage pressure tester according to claim 1, is characterized in that: on described top end cover, offer the second through hole, described pressure meter is connected to described the second through hole by pipe connecting piece.
3. dam seepage pressure tester according to claim 1, it is characterized in that: in described threaded shank, offer perpendicular to its axial third through-hole, the other end of described hoist cable passes described third through-hole and stretches out, in described threaded shank, be also arranged with nut, the end face compressing of described nut is on the surface of described hoist cable extension from third through-hole.
4. dam seepage pressure tester according to claim 2, it is characterized in that: described pipe connecting piece is made up of tee piece, union coupling, by-pass valve control and draining tap, supervisor one end on described tee piece is connected to described the second through hole by union coupling, described supervisor's the other end is connected with described by-pass valve control by union coupling, described by-pass valve control is connected with pressure meter by union coupling, and described draining tap is arranged on the arm exit of described tee piece.
5. according to the arbitrary described dam seepage pressure tester of claim 1-4, it is characterized in that: the edge of described top end cover is provided with the outer skirt that a circle extends towards piezometer tube direction, between described outer skirt and described piezometer tube, is threaded connection.
6. according to the arbitrary described dam seepage pressure tester of claim 1-4, it is characterized in that: described the first through hole is counter sink, on the reaming section inwall of described counter sink, attack internal thread, in described reaming section, be provided with sealing ring, described cable passes from described sealing ring, described sealing ring top is provided with compact heap, on described compact heap outer wall, has attacked external screw thread, and described compact heap is screwed onto in described reaming section and tightly suppresses described sealing ring.
7. according to the arbitrary described dam seepage pressure tester of claim 1-4, it is characterized in that: the head place of described bolt is provided with gauge point, the pitch in the pitch in described tapped blind hole and described threaded shank is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410094179.1A CN104032719B (en) | 2014-03-14 | 2014-03-14 | A kind of dam seepage pressure tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410094179.1A CN104032719B (en) | 2014-03-14 | 2014-03-14 | A kind of dam seepage pressure tester |
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| CN104032719A true CN104032719A (en) | 2014-09-10 |
| CN104032719B CN104032719B (en) | 2015-10-28 |
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| CN201410094179.1A Active CN104032719B (en) | 2014-03-14 | 2014-03-14 | A kind of dam seepage pressure tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017780A (en) * | 2014-12-04 | 2016-10-12 | 熊达煜 | Detecting device for automatically controlling water pressure of dam and detecting method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0250279A2 (en) * | 1986-05-15 | 1987-12-23 | SOLETANCHE Société Anonyme dite: | Method and apparatus for measuring the permeability of a land area |
| CN201229194Y (en) * | 2008-06-19 | 2009-04-29 | 北京矿咨信矿业技术研究有限公司 | Automatic monitoring system for seepage line of tailing dam |
| CN101806608A (en) * | 2010-04-21 | 2010-08-18 | 太原科技大学 | Seepage flow and seepage pressure monitoring device |
| CN102426074A (en) * | 2011-08-29 | 2012-04-25 | 杨桂芳 | Double-casing piezometric tube protection device |
| CN103195044A (en) * | 2013-03-25 | 2013-07-10 | 长沙理工大学 | Pore water pressure gauge deep-layer embedded device |
| CN203795402U (en) * | 2014-03-14 | 2014-08-27 | 水利部交通运输部国家能源局南京水利科学研究院 | Seepage pressure measurement device for dikes |
-
2014
- 2014-03-14 CN CN201410094179.1A patent/CN104032719B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0250279A2 (en) * | 1986-05-15 | 1987-12-23 | SOLETANCHE Société Anonyme dite: | Method and apparatus for measuring the permeability of a land area |
| CN201229194Y (en) * | 2008-06-19 | 2009-04-29 | 北京矿咨信矿业技术研究有限公司 | Automatic monitoring system for seepage line of tailing dam |
| CN101806608A (en) * | 2010-04-21 | 2010-08-18 | 太原科技大学 | Seepage flow and seepage pressure monitoring device |
| CN102426074A (en) * | 2011-08-29 | 2012-04-25 | 杨桂芳 | Double-casing piezometric tube protection device |
| CN103195044A (en) * | 2013-03-25 | 2013-07-10 | 长沙理工大学 | Pore water pressure gauge deep-layer embedded device |
| CN203795402U (en) * | 2014-03-14 | 2014-08-27 | 水利部交通运输部国家能源局南京水利科学研究院 | Seepage pressure measurement device for dikes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017780A (en) * | 2014-12-04 | 2016-10-12 | 熊达煜 | Detecting device for automatically controlling water pressure of dam and detecting method thereof |
| CN106017780B (en) * | 2014-12-04 | 2019-01-01 | 徐晓依 | A kind of automatic control dam hydraulic pressure force checking device and its monitoring method |
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| Publication number | Publication date |
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| CN104032719B (en) | 2015-10-28 |
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