CN101240530A - Device for sealing slurry-blocking masonry dam uplift pressure observation hole and sealing method thereof - Google Patents
Device for sealing slurry-blocking masonry dam uplift pressure observation hole and sealing method thereof Download PDFInfo
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- CN101240530A CN101240530A CNA2007100103188A CN200710010318A CN101240530A CN 101240530 A CN101240530 A CN 101240530A CN A2007100103188 A CNA2007100103188 A CN A2007100103188A CN 200710010318 A CN200710010318 A CN 200710010318A CN 101240530 A CN101240530 A CN 101240530A
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- water
- peephole
- swellable
- sealing
- offset plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
Abstract
The invention relates to a dam peephole technique, specifically is a hole sealing device and method for a masonry dam uplift pressure peephole. The invented device comprises a piezometric tube, a flange support bracket and a water swelling rubber plate. A peel hole is drilled on the dam body. The piezometric tube having a water swelling rubber plate is disposed in the peephole. The water swelling rubber plate swells after being disposed in water and seals the inner wall gap in the peephole. The inner wall gap of the peephole is sealed after a water stop strip is disposed on the water swelling rubber plate. Water soluble polyurethane is poured onto the water stop strip until the water soluble polyurethane swells when touching water to be a solid to seal the inner wall gap of the peephole and comes to water surface. Finally, concrete is poured into the waterless peephole up to the tube opening of the dam. The invented method is suitable for sealing masonry dam uplift pressure peepholes of different depth, not only satisfies sealing requirement for masonry dam uplift pressure peepholes, but also changes traditional uplift pressure observing method, thereby the observing system has better flexibility and maintainability.
Description
Technical field
The present invention relates to dam peephole technology, specifically a kind of hole sealing device and method for sealing thereof of stone masonry dam uplift pressure peephole.
Background technology
The uplift pressure observation of stone masonry dam generally is that limit Jian Ba buries scope underground in the limit when building the dam.Along with the dam increase of running time, the scope that construction period is buried underground will wear out gradually, reach application life and scrap, and can not continue to do monitoring and use.But these monitoring equipment institute data monitored contents are again vital to the safety management of stone masonry dam.If the equipment that is used in the stone masonry dam monitor can not use, need bury underground again.And present construction technology is difficult to reach designing requirement.When burying underground again, on dam body, make earlier peephole, again with under the piezometer tube of built-in sensors in peephole, be on the piezometer tube below the bedrock surface and have the floral tube section.If dam foundation rock has the crack, just have the water infiltration and come, flow in the piezometer tube by the floral tube section, sensor can be monitored out the water yield that dam foundation rock oozes, and then monitors out the safety of dam.But, more than bedrock surface, leave the slit between piezometer tube and the peephole inwall, thereby cause the water in the dam body to flow to below the bedrock surface by the slit, also flow in the piezometer tube by the floral tube section again.So, sensor monitors to water just be hard to tell on earth from which, the water that promptly has dam foundation dam rock fracture to ooze also has the water that infiltration is come from dam body, the destruction monitoring accuracy has a strong impact on the result of observation.
Summary of the invention
Above-mentionedly cause the inaccurate problem of monitoring because of the peephole hole-sealing technology in order to solve, the object of the present invention is to provide a kind of hole sealing device and method for sealing thereof of stone masonry dam uplift pressure peephole, adopt this hole sealing device, can avoid the water of the above dam body of bedrock surface to be penetrated into below the bedrock surface, guarantee the accuracy of monitoring uplift pressure, can be fit to the sealing of hole of the stone masonry dam uplift pressure peephole of different depth.
Hole sealing device of the present invention comprises piezometer tube, flange carriage and water-swellable offset plate, and piezometer tube is embedded in the peephole, is connected with the flange carriage on it, and the water-swellable offset plate is fixed on the flange carriage by flange; Above the water-swellable offset plate, be provided with water-soluble polyurethane layer and cement sand bed successively; On the piezometer tube below the flange carriage, be provided with the floral tube section.
Wherein: between water-swellable offset plate and water-soluble polyurethane layer, also be provided with the water-swellable sealing rod; The height of described water-swellable sealing rod is 5～10cm; Water-swellable offset plate on the described piezometer tube is positioned at pressure measuring cavity, a little less than the bedrock surface of peephole; The thickness of described water-swellable offset plate is 5～10cm.
Method for sealing of the present invention is: bore peephole on dam body, the piezometer tube that will have the water-swellable offset plate is put into peephole, and the water-swellable offset plate expands after meeting water, with peephole inwall gap closing; Pour into water-soluble polyurethane on the water-swellable offset plate, water-swellable becomes solid, once more with the sealing of peephole inwall, up to surfacing; Cement mortar is poured in the anhydrous peephole, at last up to the mouth of pipe of dam facing.
Wherein: before pouring into water-soluble polyurethane, can put into earlier behind the water-swellable sealing rod, on the water-swellable sealing rod, pour into water-soluble polyurethane again with the inwall gap closing of peephole; Weld a flange carriage on the described piezometer tube outer wall earlier, undersized is put the water-swellable offset plate in the internal diameter of peephole on the flange carriage, put a flange more thereon, and the water-swellable offset plate is fixed on the flange carriage; The size of water-swellable offset plate is slightly larger than the internal diameter of peephole; The described water-soluble polyurethane that pours into, after its water-swellable becomes solid with the inwall gap closing of peephole and surface.
Advantage of the present invention and good effect are:
1. method for sealing of the present invention has prevented the slit inflow pressure measuring cavity of the water more than the basement rock zone by the peephole inwall well by four layers of shutoff, has guaranteed the accuracy of uplift pressure measurement result.With the gap closing of peephole inwall, both can prevent that current from getting off after being installed in water-swellable offset plate on the flange carriage and expanding, can also prevent that water-soluble polyurethane was penetrated into the floral tube section, the floral tube section is blocked from the slit.
2. method for sealing accurate positioning of the present invention, piezometer tube is vertically placed, no draw-off point.
3. adopt the observation system of method for sealing of the present invention to have very high flexibility and maintainability.
Description of drawings
Fig. 1 is for wanting the sealing of hole sectional view of peephole of the present invention;
Wherein, 1 is dam facing, and 2 is piezometer tube, and 3 is cement mortar, and 4 is dam body, and 5 is water-soluble polyurethane, and 6 is former dam foundation base plate, and 7 is the water-swellable sealing rod, and 8 is the water-swellable offset plate, and 9 is the flange carriage, and 10 is the floral tube section, and 11 is pressure measuring cavity, and 12 is the basement rock zone.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention includes piezometer tube 2, flange carriage 9 and water-swellable offset plate 8, piezometer tube 2 is embedded in the peephole, is welded with flange carriage 9 on it, the water-swellable offset plate 8 that is positioned at pressure measuring cavity 2 is fixed on the flange carriage 9 by flange, a little less than the bedrock surface in the peephole.Above water-swellable offset plate 8, be provided with water-swellable sealing rod 7, water-soluble polyurethane layer and cement sand bed successively, on the piezometer tube 2 of flange carriage below 9, be provided with floral tube section 10.The height of water-swellable sealing rod 7 is 5～10cm, and the thickness of water-swellable offset plate 8 is 5～10cm.
Method for sealing of the present invention is: at first bore peephole on moisture dam body 4, at one end weld a flange carriage 9 with the thick iron plate of 3mm on Feng Bi piezometer tube 2 outer walls, its undersized is in the internal diameter of peephole, helping piezometer tube 2 like this can successfully be put in the peephole, and piezometer tube 2 blind ends are provided with floral tube section 10.On flange carriage 1, put one deck water-swellable offset plate 8, can expand at leisure behind the chance water, the gap closing of peephole inwall.The thickness of water-swellable offset plate 8 is 5～10cm, and size is slightly larger than the internal diameter of peephole, can prevent that like this water-soluble polyurethane 5 is penetrated into the floral tube section, floral tube section 10 is blocked from peephole inwall slit.On water-swellable offset plate 8, put a flange again, water-swellable offset plate 8 is fixed on the flange carriage 9, be the first floor shutoff with bolt.
Then, be put on the flange carriage 9, behind the water-swellable inwall slit of peephole sealed again, as second layer shutoff with water-swellable sealing rod 7.The height of the water-swellable sealing rod of putting into 7 is that 5～10cm gets final product.
Following above water-swellable sealing rod 7 with grout pipe, pour into water-soluble polyurethane 5.Because meeting water, water-soluble polyurethane 5 can expand into solid rapidly, and expanding volume is bigger, the slit of peephole inwall can be sealed once more, simultaneously original water in the dam body 4 upwards and is all around released, fill the position of original water at leisure with water-soluble polyurethane 5, surface up to it, this is the 3rd layer of shutoff.Because various places stone masonry dam geographical environment difference, therefore monitor water-soluble polyurethane 5 and whether surface and adopt the electric fluviograph method to observe.
After water-soluble polyurethane surfaces, in anhydrous peephole, pour into cement mortar 3 and carry out the 4th layer of shutoff, up to the mouth of pipe of dam facing 1, finish the sealing of hole process of whole stone masonry dam uplift pressure peephole.
Water-swellable offset plate among the present invention (being the offset plate that water-swellable material is made) as the BW-96 type offset plate of the far logical engineering rubber company in Hebei.
Water-swellable sealing rod (being the sealing rod that water-swellable material is made) as the BW-96 type sealing rod of the far logical engineering rubber company in Hebei.
Water-soluble polyurethane (as the LW water-soluble polyurethane of dam safety engineering company of Hangzhou state electricity hydraulic and electric engineering Engineering Co., Ltd).
Method for sealing of the present invention is fit to the sealing of hole of the stone masonry dam uplift pressure peephole of different depth, not only satisfy the sealing of hole requirement of the uplift pressure peephole of stone masonry dam, and changed original uplift pressure observed pattern traditionally, make observation system have more flexibility and maintainability.
Claims (9)
1. the hole sealing device of a stone masonry dam uplift pressure peephole, it is characterized in that: comprise piezometer tube (2), flange carriage (9) and water-swellable offset plate (8), piezometer tube (2) is embedded in the peephole, be connected with flange carriage (9) on it, water-swellable offset plate (8) is fixed on the flange carriage (9) by flange; Top at water-swellable offset plate (8) is provided with water-soluble polyurethane layer and cement sand bed successively; On the piezometer tube (2) below the flange carriage (9), be provided with floral tube section (10).
2. by the hole sealing device of the described stone masonry dam uplift pressure of claim 1 peephole, it is characterized in that: between water-swellable offset plate (8) and water-soluble polyurethane layer, also be provided with water-swellable sealing rod (7).
3. by the method for sealing of the described stone masonry dam uplift pressure of claim 2 peephole, it is characterized in that: the height of described water-swellable sealing rod (7) is 5～10cm.
4. by the hole sealing device of claim 1 or 2 described stone masonry dam uplift pressure peepholes, it is characterized in that: the water-swellable offset plate (8) on the described piezometer tube (2) is positioned at pressure measuring cavity (11), a little less than the bedrock surface of peephole.
5. by the method for sealing of claim 1 or 2 described stone masonry dam uplift pressure peepholes, it is characterized in that: the thickness of described water-swellable offset plate (8) is 5～10cm.
6. method for sealing by the described stone masonry dam uplift pressure of claim 1 peephole hole sealing device, it is characterized in that: go up at dam body (4) and bore peephole, the piezometer tube (2) that will have water-swellable offset plate (8) is put into peephole, water-swellable offset plate (8) expands after meeting water, with peephole inwall gap closing; Pour into water-soluble polyurethane (5) on water-swellable offset plate (8), water-swellable becomes solid, once more with the sealing of peephole inwall, up to surfacing; At last cement mortar (3) is poured in the anhydrous peephole the mouth of pipe up to dam facing (1).
7. press the method for sealing of the described stone masonry dam uplift pressure of claim 6 peephole, it is characterized in that: pouring into water-soluble polyurethane (5) before, can put into earlier behind the water-swellable sealing rod (7) the inwall gap closing of peephole, on water-swellable sealing rod (7), pour into water-soluble polyurethane (5) again.
8. press the method for sealing of claim 6 or 7 described stone masonry dam uplift pressure peepholes, it is characterized in that: weld a flange carriage (9) on described piezometer tube (2) outer wall earlier, undersized is in the internal diameter of peephole, on flange carriage (9), put water-swellable offset plate (8), put a flange more thereon, water-swellable offset plate (8) is fixed on the flange carriage (9); The size of water-swellable offset plate (8) is slightly larger than the internal diameter of peephole.
9. by the method for sealing of claim 6 or 7 described stone masonry dam uplift pressure peepholes, it is characterized in that: the described water-soluble polyurethane (5) that pours into, after its water-swellable becomes solid with the inwall gap closing of peephole and surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100103188A CN100547173C (en) | 2007-02-07 | 2007-02-07 | A kind of hole sealing device and method for sealing thereof of stone masonry dam uplift pressure peephole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100103188A CN100547173C (en) | 2007-02-07 | 2007-02-07 | A kind of hole sealing device and method for sealing thereof of stone masonry dam uplift pressure peephole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101240530A true CN101240530A (en) | 2008-08-13 |
| CN100547173C CN100547173C (en) | 2009-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100103188A Expired - Fee Related CN100547173C (en) | 2007-02-07 | 2007-02-07 | A kind of hole sealing device and method for sealing thereof of stone masonry dam uplift pressure peephole |
Country Status (1)
| Country | Link |
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| CN (1) | CN100547173C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777169A (en) * | 2012-07-18 | 2012-11-14 | 淮南矿业(集团)有限责任公司 | Gas pressure depression angle measuring method and system |
| CN105970879A (en) * | 2016-05-16 | 2016-09-28 | 浙江广川工程咨询有限公司 | Method for quick recovery of vertical water stoppage of water gate |
-
2007
- 2007-02-07 CN CNB2007100103188A patent/CN100547173C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777169A (en) * | 2012-07-18 | 2012-11-14 | 淮南矿业(集团)有限责任公司 | Gas pressure depression angle measuring method and system |
| CN102777169B (en) * | 2012-07-18 | 2015-10-21 | 淮南矿业(集团)有限责任公司 | Gas pressure angle of depression measuring method and system |
| CN105970879A (en) * | 2016-05-16 | 2016-09-28 | 浙江广川工程咨询有限公司 | Method for quick recovery of vertical water stoppage of water gate |
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| Publication number | Publication date |
|---|---|
| CN100547173C (en) | 2009-10-07 |
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| C06 | Publication | ||
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Granted publication date: 20091007 Termination date: 20100207 |