CN102839691A - Quick sealing method and device for sandless cement pipe deep well dewatering wellhead - Google Patents
Quick sealing method and device for sandless cement pipe deep well dewatering wellhead Download PDFInfo
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- CN102839691A CN102839691A CN2011101749837A CN201110174983A CN102839691A CN 102839691 A CN102839691 A CN 102839691A CN 2011101749837 A CN2011101749837 A CN 2011101749837A CN 201110174983 A CN201110174983 A CN 201110174983A CN 102839691 A CN102839691 A CN 102839691A
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Abstract
The invention discloses a quick sealing method and a device for a sandless cement pipe deep well dewatering wellhead. A prefabricated steel sleeve is inserted into a sandless cement pipe; at least one water stop plate is arranged on an outer side wall of the steel sleeve; materials such as polyurethane sealants and SBS (styrene-butadiene-styrene) waterproof coiled materials are adopted among the steel sleeve, the sandless cement pipe and a foundation concrete cushion for comprehensive water resistance; hard concrete is poured into the steel sleeve; and the upper part of the steel sleeve is connected by a sealing plate, a waterproof rubber mat and a flange for once quick sealing, so that the problem of water seepage inside and outside a pipe well after being sealed is avoided.
Description
Technical field
The present invention relates to precipitation well blocking technology field, relate in particular to a kind of no sand cement pipe deep-well precipitation well head rapid plugging method and device thereof.
Background technology
In the middle of the process of the deep foundation pit precipitation well of basement in high rise building, underground garage and civil air defense constructions and installations excavation; Because the infiltration of underground water in soil, the phenomenon of quicksand and gush takes place through regular meeting, gush on cheating that subsoil will not stop along with excavation; Side slope also will constantly be caved in; So not only can influence the excavation construction of the earthwork, and will have influence on the safety of adjacent building, structure and foundation pit supporting construction, also can have influence on the normal construction and the workmanship of building foundation simultaneously.
Deep foundation pit precipitation well adopts no sand cement pipe deep-well precipitation usually at present; Obtained using widely in fields such as building, railway, culverts, deep foundation pit precipitation well has plurality of advantages such as precipitation has quick construction, displacement is big, precipitation is dark, drainage effect is good, well spacing is big.
Current deep foundation pit precipitation well is when its area is bigger, owing to receive the restriction of the precipitation depth and the precipitation radius of influence, deep foundation pit precipitation well must be embedded in the foundation ditch; But this moment, the shutoff of well head became a difficult problem, and the phenomenon of seepage often appears in conventional sale monopoly method for blocking easily in the middle of the process of shutoff or after shutoff, take a lot of work during handling; And leak stopping is not thorough; And conventional method for blocking can cause the cross-operation of work post, can influence the duration, and construction cost is high; Shutoff is got up also more difficult, is difficult to guarantee the quality and the effect of shutoff.
Summary of the invention
In order to solve the problem of above-mentioned existence; The object of the present invention is to provide that a kind of technology is simple, speed of application is fast, the cycle is short, can not influence construction speed, and good no sand cement pipe deep-well precipitation well head rapid plugging method and the used device of this method of disposable plugging effect.
To achieve these goals, the present invention adopts following technical scheme:
No sand cement pipe deep-well precipitation well head rapid plugging method, concrete steps are:
Step 1, the mouth of pipe are handled: laying base concrete bed course makes has certain intensity, makes that simultaneously no sand cement pipe well open height is higher than the base concrete bed course;
Step 6, at interval stop precipitation successively: stop precipitation should be a plurality of no sand cement pipe precipitation wells at interval progressively stop precipitation, individual well stops to take out water pump immediately behind the precipitation;
Step 7, fill out core and seal: no sand cement Guan Zhongyong fine sand is backfilling into the height of concrete cushion, drops in the steel sleeve vibration compacting again with the harsh concrete that is mixed with early strength admixture; And be poured into the top of steel sleeve always; On the flange at steel sleeve top, place the rubber waterproof pad immediately, cover shrouding, shrouding is fixed on the flange with bolt; Use the top of expansive concrete teeming again in steel sleeve; Make it to maintain an equal level vibration compacting, covering protection mutually with the concrete surface that does not have around the sand cement pipe well mouth.
Preferably, the sealing compound in the said step 4 adopts polyurethane water-proof sealing compound.
Preferably, the waterproofing course in the said step 4 adopts the SBS coil waterproof layer.
No sand cement pipe deep-well precipitation well head fast plugging device, it comprises no sand cement pipe and steel sleeve, steel sleeve comprises that steel tube body, flange, shrouding, bolt, rubber waterproof pad are with seal plate at least; Said no sand cement pipe is embedded in the middle of the base concrete bed course; Insert in the no sand cement pipe bottom of said steel sleeve, and said flange is positioned at the top of steel sleeve, and said shrouding is positioned at the top of flange; Be equipped with at least three screws on said flange and the shrouding; Said rubber waterproof pad is between flange and shrouding, and through the firm connection of bolt, said seal plate is positioned on the lateral wall of steel sleeve between said flange and the shrouding.
Preferably, be equipped with 12 screws on said flange and the shrouding.
Preferably, the lateral wall of said steel sleeve is provided with the twice seal plate, is positioned at the last seal plate that is at steel sleeve middle part, is positioned at the following seal plate that is of steel sleeve bottom.
Preferably, said steel sleeve and do not have filled polyurethane waterproof sealing cream between the sand cement pipe well mouth.
Preferably, fill waterproof cement mortar between said no sand cement pipe well mouth and the following seal plate.
Preferably, arc chord angle is made with cement mortar in said junction at no sand cement pipe and base concrete bed course, on arc chord angle, is provided with waterproofing course one, and waterproofing course joins with following seal plate, and interface adopts the hot melt sealing.
Preferably, said waterproofing course is the SBS coil waterproof layer.
Advantage of the present invention is: the steel sleeve that insertion is made in advance in the no sand cement pipe; On the lateral wall of steel sleeve, be provided with at least one seal plate; Between steel sleeve, no sand cement pipe and base concrete bed course, adopt materials such as polyurethane sealant, SBS coiled material to carry out comprehensive waterproof, build harsh concrete in the inside of steel sleeve, top couples together with shrouding, rubber waterproof pad and flange; Carry out disposable quick blocking, stopped the difficult problem of the inside and outside infiltration of shut-in well back pipe well.
Description of drawings
Fig. 1 is the schematic flow sheet of method among the present invention;
Fig. 2 is the structural representation that installs among the present invention.
Among the figure 1, no sand cement pipe, 2, steel sleeve, 201, steel tube body, 202, flange; 203, shrouding, 204, bolt, 205, the rubber waterproof pad, 206, go up seal plate; 207, following seal plate, 3, waterproof sealing cream, 4, waterproof cement mortar, 5, the SBS coil waterproof layer.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further to describe in detail explanation.
Of Fig. 1 to 2; No sand cement pipe deep-well precipitation well head rapid plugging method; The flow process of entire method is that the mouth of pipe is handled---the steel sleeve making---and steel sleeve is inserted fixing in advance---the sealing joint waterproof---foundation construction---stops precipitation---successively at interval, and fill out core and seal, wherein concrete steps are:
Step 1, the mouth of pipe are handled: laying base concrete bed course makes has certain intensity, makes that simultaneously no sand cement pipe 1 well head height is higher than base concrete bed course 220mm, and the external diameter of the no sand cement pipe 1 that uses in the present embodiment is 380mm, and internal diameter is 320mm;
Step 6, at interval stop precipitation successively: stop precipitation should be a plurality of no sand cement pipe 1 precipitation wells at interval progressively stop precipitation; Individual well stops to take out water pump immediately behind the precipitation; The adverse effect that minimizing pressure of return water that like this can maximum efficiency produces, the effect of the sealing that also can guarantee simultaneously to shunt in a well;
Step 7, fill out core and seal: the height that is backfilling into concrete cushion in the no sand cement pipe 1 with fine sand; Drop in the steel sleeve 2 with the harsh concrete that is mixed with early strength admixture again, vibration compacting, and be poured into the top of steel sleeve 2 always; On the flange 202 at steel sleeve 2 tops, place rubber waterproof pad 205 immediately; Cover shrouding 203, with 12 bolts 204 shrouding 203 is fixed on the flange 202, the screwing force distance is 50N.m-60N.m; Use the top of expansive concrete teeming again, make reinforcing rib interior fair with the reinforcing rib foreign minister in steel sleeve 2.
Construction is accomplished back reply waterproofing course, steel sleeve and is not had positions such as sand cement pipe junction surface, seal plate, shrouding and check that also next step construction can be carried out in qualified rear.
The present invention does not have the device that uses in the sand cement pipe deep-well precipitation well head rapid plugging method, a kind of no sand cement pipe deep-well precipitation well head fast plugging device, and it comprises no sand cement pipe 1 and steel sleeve 2; Steel sleeve comprises steel tube body 201, flange 201, shrouding 203, bolt 204, rubber waterproof pad 205 and twice seal plate, does not wherein have sand cement pipe 1 and is embedded in the middle of the base concrete bed course, and insert in the no sand cement pipe 1 bottom of steel sleeve 2; At steel sleeve 2 with there is not filled polyurethane waterproof sealing cream 3 between sand cement pipe 1 well head; Flange 202 is positioned at the top of steel sleeve 2, and shrouding 203 is positioned at the top of flange 202, on flange 202 and shrouding 203, is equipped with 12 screws; Be provided with rubber waterproof pad 205 between flange 202 and the shrouding 203; Through bolt 204 firm connections, seal plate is positioned on the lateral wall of steel sleeve 2 between flange 202 and the shrouding 203, and the road number of seal plate can be confirmed according to the height of steel sleeve; It in the present embodiment twice seal plate; Wherein be positioned at the last seal plate 206 that is at steel sleeve 2 middle parts, be positioned at the following seal plate 207 that is of steel sleeve 2 bottoms, fill waterproof cement mortar 4 between no sand cement pipe 1 well head and the following seal plate 207; Make arc chord angle in the no sand cement pipe 1 and the junction of base concrete bed course with cement mortar; On arc chord angle, be provided with SBS coil waterproof layer 5 one, SBS coil waterproof layer 5 joins with following seal plate 207, and interface adopts the hot melt sealing.
The above only is a preferred implementation of the present invention; Should be pointed out that to those skilled in the art, under the prerequisite that does not break away from the invention design; Can also make some similar distortion and improvement, these also should be regarded as within protection scope of the present invention.
Claims (10)
1. do not have sand cement pipe deep-well precipitation well head rapid plugging method, it is characterized in that concrete steps are:
Step 1, the mouth of pipe are handled: laying base concrete bed course makes has certain intensity, makes that simultaneously no sand cement pipe well open height is higher than the base concrete bed course;
Step 2, steel sleeve are made: on the lateral wall of circular steel sleeve pipe, be welded with at least one seal plate; Welded top at steel sleeve has a flange; Several screws are set on the flange; The configuration corresponding bolts is provided with shrouding at the top of steel sleeve, and the rubber waterproof pad is set between shrouding and flange;
Step 3, steel sleeve are inserted fixing in advance: before the sole plate assembling reinforcement, steel sleeve is inserted in the no sand cement mouth of pipe, and near the bottom welded reinforcement support of one seal plate of no sand cement pipe import, make this seal plate be higher than no sand cement pipe well mouth;
Step 4, sealing joint waterproof: at steel sleeve with there is not between the sand cement pipe well mouth waterproof sealing of filling cream; After treating waterproof sealing cream drying; Adopt waterproof cement mortar will be near fill plug seal between one seal plate of no sand cement pipe import and the no sand cement pipe well mouth, make arc chord angle in the junction of no sand cement pipe and base concrete bed course with cement mortar, on arc chord angle, do waterproofing course one; Waterproofing course joins with following seal plate, and interface adopts the hot melt sealing;
Step 5, foundation construction: colligation basis end placing of reinforcement; Break off at no sand cement pipe well mouth place; Periphery is provided with reinforcing rib; Concreting around no sand cement pipe well mouth, no sand cement pipe well mouth top are that the back cast gate is kept somewhere at the center with the well head, after the well head quick blocking, adopt than the higher leveled expansive concrete teeming of circumferential concrete grade;
Step 6, at interval stop precipitation successively: stop precipitation should be a plurality of no sand cement pipe precipitation wells at interval progressively stop precipitation, individual well stops to take out water pump immediately behind the precipitation;
Step 7, fill out core and seal: no sand cement Guan Zhongyong fine sand is backfilling into the height of concrete cushion, drops in the steel sleeve vibration compacting again with the harsh concrete that is mixed with early strength admixture; And be poured into the top of steel sleeve always; On the flange at steel sleeve top, place the rubber waterproof pad immediately, cover shrouding, shrouding is fixed on the flange with bolt; Use the top of expansive concrete teeming again in steel sleeve; Make it to maintain an equal level vibration compacting, covering protection mutually with the concrete surface that does not have around the sand cement pipe well mouth.
2. no sand cement pipe deep-well precipitation well head rapid plugging method according to claim 1 is characterized in that, the waterproof sealing cream in the said step 4 adopts polyurethane water-proof sealing compound.
3. no sand cement pipe deep-well precipitation well head rapid plugging method according to claim 1 is characterized in that, the waterproofing course in the said step 4 adopts the SBS coil waterproof layer.
4. do not have sand cement pipe deep-well precipitation well head fast plugging device, it is characterized in that it comprises no sand cement pipe and steel sleeve; Steel sleeve comprises steel tube body, flange, shrouding, bolt, rubber waterproof pad with seal plate at least, and said no sand cement pipe is embedded in the middle of the base concrete bed course, and insert in the no sand cement pipe bottom of said steel sleeve; Said flange is positioned at the top of steel sleeve; Said shrouding is positioned at the top of flange, is equipped with at least three screws on said flange and the shrouding, and said rubber waterproof pad is between flange and shrouding; Through the firm connection of bolt, said seal plate is positioned on the lateral wall of steel sleeve between said flange and the shrouding.
5. no sand cement pipe deep-well precipitation well head fast plugging device according to claim 4 is characterized in that, is equipped with 12 screws on said flange and the shrouding.
6. no sand cement pipe deep-well precipitation well head fast plugging device according to claim 5 is characterized in that the lateral wall of said steel sleeve is provided with the twice seal plate, is positioned at the last seal plate that is at steel sleeve middle part, is positioned at the following seal plate that is of steel sleeve bottom.
7. no sand cement pipe deep-well precipitation well head fast plugging device according to claim 6 is characterized in that, said steel sleeve and do not have filled polyurethane waterproof sealing cream between the sand cement pipe well mouth.
8. no sand cement pipe deep-well precipitation well head fast plugging device according to claim 7 is characterized in that, fills waterproof cement mortar between said no sand cement pipe well mouth and the following seal plate.
9. no sand cement pipe deep-well precipitation well head fast plugging device according to claim 8; It is characterized in that; Arc chord angle is made with cement mortar in said junction at no sand cement pipe and base concrete bed course; On arc chord angle, be provided with waterproofing course one, waterproofing course joins with following seal plate, and interface adopts the hot melt sealing.
10. no sand cement pipe deep-well precipitation well head fast plugging device according to claim 9 is characterized in that said waterproofing course is the SBS coil waterproof layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110174983.7A CN102839691B (en) | 2011-06-22 | 2011-06-22 | Quick sealing method and device for sandless cement pipe deep well dewatering wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110174983.7A CN102839691B (en) | 2011-06-22 | 2011-06-22 | Quick sealing method and device for sandless cement pipe deep well dewatering wellhead |
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| CN102839691A true CN102839691A (en) | 2012-12-26 |
| CN102839691B CN102839691B (en) | 2015-04-15 |
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| CN201110174983.7A Active CN102839691B (en) | 2011-06-22 | 2011-06-22 | Quick sealing method and device for sandless cement pipe deep well dewatering wellhead |
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Cited By (7)
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| CN103362145A (en) * | 2013-08-02 | 2013-10-23 | 江苏正方园建设集团有限公司 | Steel sleeve for basement tube well plugging |
| CN103898920A (en) * | 2012-12-27 | 2014-07-02 | 上海建工七建集团有限公司 | Foundation pit dewatering and drainage method |
| CN104563144A (en) * | 2014-12-04 | 2015-04-29 | 成都迅德科技有限公司 | Plugging structure |
| WO2018214143A1 (en) * | 2017-05-26 | 2018-11-29 | 南通八建集团有限公司 | Construction method for plugging dewatering well having penetrating bottom plate in foundation pit |
| CN110374125A (en) * | 2019-07-30 | 2019-10-25 | 中铁九局集团第七工程有限公司 | Metro Deep Excavation side wall interlayer method for treating water |
| CN111441374A (en) * | 2020-01-14 | 2020-07-24 | 中建六局建设发展有限公司 | Quick plugging construction method for high-water-pressure deep foundation pit dewatering well |
| CN116537238A (en) * | 2023-07-04 | 2023-08-04 | 北京建工集团有限责任公司 | Plugging method for dry well under water-carrying operation environment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898920A (en) * | 2012-12-27 | 2014-07-02 | 上海建工七建集团有限公司 | Foundation pit dewatering and drainage method |
| CN103362145A (en) * | 2013-08-02 | 2013-10-23 | 江苏正方园建设集团有限公司 | Steel sleeve for basement tube well plugging |
| CN104563144A (en) * | 2014-12-04 | 2015-04-29 | 成都迅德科技有限公司 | Plugging structure |
| WO2018214143A1 (en) * | 2017-05-26 | 2018-11-29 | 南通八建集团有限公司 | Construction method for plugging dewatering well having penetrating bottom plate in foundation pit |
| CN110374125A (en) * | 2019-07-30 | 2019-10-25 | 中铁九局集团第七工程有限公司 | Metro Deep Excavation side wall interlayer method for treating water |
| CN111441374A (en) * | 2020-01-14 | 2020-07-24 | 中建六局建设发展有限公司 | Quick plugging construction method for high-water-pressure deep foundation pit dewatering well |
| CN116537238A (en) * | 2023-07-04 | 2023-08-04 | 北京建工集团有限责任公司 | Plugging method for dry well under water-carrying operation environment |
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| CN102839691B (en) | 2015-04-15 |
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