CN203569578U - Recharge well capable of preventing well casing blocking and water bursting - Google Patents
Recharge well capable of preventing well casing blocking and water bursting Download PDFInfo
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- CN203569578U CN203569578U CN201320656046.XU CN201320656046U CN203569578U CN 203569578 U CN203569578 U CN 203569578U CN 201320656046 U CN201320656046 U CN 201320656046U CN 203569578 U CN203569578 U CN 203569578U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 230000000903 blocking effect Effects 0.000 title abstract 3
- 230000009172 bursting Effects 0.000 title abstract 2
- 239000004927 clay Substances 0.000 claims abstract description 42
- 239000004568 cement Substances 0.000 claims abstract description 13
- 239000013049 sediment Substances 0.000 claims abstract description 12
- 239000011440 grout Substances 0.000 claims abstract description 11
- 238000003032 molecular docking Methods 0.000 claims abstract description 5
- 230000004888 barrier function Effects 0.000 claims description 23
- 238000001914 filtration Methods 0.000 claims description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 239000002689 soil Substances 0.000 abstract description 5
- 238000002203 pretreatment Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000010030 laminating Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000003340 retarding agent Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000011962 puddings Nutrition 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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Abstract
The utility model discloses a recharge well capable of preventing a well casing blocking and water bursting. The center of a well hole is provided with a sediment tube, a filter and a well casing, wherein the sediment tube, the filter and the well casing are sequentially arranged from top to bottom and are fixed in a docking mode. A gravel filter layer is arranged inside the well hole formed in the outer portion of the filter, the top portion of the gravel filter layer is located at the place 2m to 3m above the filter, a clay ball water-resisting layer is arranged on the ravel filter layer, the top portion of the clay ball water-resisting layer is located at the place 7m to 10m above the filter, a rubber air bag is arranged on the top portion of the clay ball water-resisting layer, the rubber air bag is filled with cement grout, a concrete water plugging layer is arranged from the rubber air bag up to a wellhead, the side edge of the rubber air bag is blown into a water proof soil layer, and the water proof soil layer is located on the outer portion of the clay ball water-resisting layer and the concrete water plugging layer. The recharge well can effectively prevent the unavoidable blocking and failure of the filter caused by the disturbance of the well casing in the well completion progress and the upwelling of the recharge water in the running processes of the recharge well, and finally the normal operation of the recharge well can be assured by combining the other pretreatment method of the recharge water.
Description
Technical field
The utility model belongs to utilize and recharges the foundation pit dewatering field of controlling surface settlement, or groundwater resources management domain, underground water administer field, in particular, relates to a kind of recharge well.
Background technology
In Excavation Process, often run into the control problem of artesian water.General way is to utilize pressure reduction well to carry out step-down to artesian aquifer.Meanwhile, in order to reduce to cheat the impact of interior precipitation on hole external environment, usually utilize water seal curtain to block artesian aquifer.But the increase along with the excavation of foundation pit degree of depth, need the artesian aquifer of control also more and more darker, if now still block it with water seal curtain, some area will make more than the water seal curtain degree of depth reaches 70m, and for such engineering, conventionally use diaphragm wall as water-stop curtain, this will make base pit engineering costly, very uneconomical, also increased the difficulty of constructing simultaneously.
Under such background, the concept of suspension type water-stop curtain arises at the historic moment.But adopting this way, by causing the outer impact that is subject to cheating interior precipitation in hole, is exactly ground or building settlement the most significantly, and the immediate cause that produces this sedimentation is exactly the reduction of outer aquifer, hole water level.
Therefore in order to reduce or to eliminate the impact that the outer water level in hole is cheated interior precipitation, the concept of the outer groundwater recharge in hole is generally popular.But recharge well becomes well technology is immaturely limiting the development of recharging always.Main problem has two at present:
(1) in recharge well, water burst lost efficacy.Due to the leakiness of conventional recharge well well casing side filtrate or clay ball, recharge water, often recharging under pressure-acting along the well casing sidewall ground of emerging, finally causes recharge well to lose efficacy.For this kind of inefficacy, can be at well casing side filling water mud or concrete water blockoff.But can produce lower a kind of inefficacy thereupon.
(2) recharge well filtration beds stops up and lost efficacy.Although the reason that recharge well filtration beds stops up is a lot, owing to taking in (1) after measure water blockoff, before cement paste is not curing, slurries may be along the construction gap of well casing side clay ball and in infiltration layer.If become in well construction process, careless disturbance recharge well and cause well casing run-off the straight, the possibility that this situation occurs will increase greatly.And in fact, when construction, this well casing disturbance is inevitable, especially when well casing buried depth is larger, more easily occur, this will cause recharge well to lose efficacy equally.In addition, also in order there is recharge water in recharge well running, along gushing on well casing, provide may in the inclination of recharge well well casing.
Utility model content
To be solved in the utility model is the technical problem of the normal obstruction water burst occurring in conventional recharge well, provide a kind of and can prevent that well casing from stopping up the recharge well of water burst, can effectively prevent in well construction process filtration beds that inevitably well casing disturbance brings stop up lost efficacy and recharge well running in recharge water on gush, then in conjunction with measures such as other recharge water pretreatment, can finally guarantee the normal work of recharge well.
In order to solve the problems of the technologies described above, the utility model is achieved by following technical scheme:
A kind of recharge well that can prevent well casing obstruction water burst, comprise wellhole, described wellhole center is disposed with docking fixing sediment tube, strainer, well casing from down to up, in the described wellhole of described strainer outside, be provided with gravel filtration beds, the top of described gravel filtration beds is positioned at the above 2m～3m of described strainer place, and described gravel filtration beds is provided with clay ball water barrier above, and the top of described clay ball water barrier is positioned at the above 7m～10m of described strainer place, it is characterized in that
Described clay ball water barrier top is provided with rubber pneumatic bag, in described rubber pneumatic bag, is filled with cement grout, and described rubber pneumatic bag is above is provided with concrete water-blocking layer to well head; Described rubber pneumatic bag side blasts in clay pan, and described clay pan is positioned at clay ball water barrier and concrete water-blocking layer is outside;
On described rubber pneumatic bag, be provided with exhaust opening and grouting port, described grouting port is connected with by described concrete water-blocking layer and stretches out the Grouting Pipe outside well head, and described Grouting Pipe is at the port closed of outer wellhead.
Between described rubber pneumatic bag and described concrete water-blocking layer, be provided with irony annulus.
The space that all has 17.5mm～22.5mm between described irony annulus and described wellhole hole wall and described well casing tube wall.
On described irony annulus, offer the through hole that the exhaust opening that can make on rubber pneumatic bag and grouting port pass.
Described rubber pneumatic bag is to be inflated the torus after heaving with round and smooth surface, after described rubber pneumatic bag is inflated and heaves, can put into the annular space between wellhole and well casing, continue after inflation can with wellhole hole wall and the laminating of well casing tube wall.
Described recharge well well casing, described strainer, described sediment tube are stainless steel tube.
The beneficial effects of the utility model are:
(1) the utility model is conceived to solve the problem that the well casing often occurring in conventional recharge well in engineering stops up water burst of recharging, with respect to conventional recharge well, recharge well of the present utility model can avoid cement grout in water blockoff concrete to infiltrate in clay ball water barrier on the one hand, and then infiltrates in gravel filtration beds to stop up gravel filtration beds; Can avoid on the other hand in recharging process future the recharge water in gravel filtration beds recharging under pressure-acting along gushing on the recharge well borehole wall and cause recharge well water blockoff to lose efficacy, for the normal operation of recharge well lays the first stone.
(2) the utility model applies to rubber pneumatic bag in recharge well, because rubber pneumatic bag has necessarily intercepting water property and pliability, before in rubber pneumatic bag, cement grout does not solidify, rubber pneumatic bag can be along with ambient pressure change shape, to plug the gap, thereby effectively separate concrete water-blocking layer and clay ball water barrier, so prevent into filtration beds that the inevitable well casing of well construction process tilts to bring stop up lost efficacy and recharge well running in recharge water on gush.
(3) the utility model is retained in the Grouting Pipe that is connected with rubber pneumatic bag grouting port in recharge well, and sealing is done in Grouting Pipe outer end and process, guaranteed that cement grout uncured in rubber pneumatic bag is unlikely flows out from rubber pneumatic bag, thereby make rubber pneumatic bag can keep its original volume, to accomplish to separate concrete water-blocking layer and clay ball water barrier.
(4) the utility model applies to irony annulus in recharge well, because irony annulus has certain rigidity, it can more evenly be passed on rubber pneumatic bag by its concrete gravity load in top, under this gravity load effect, rubber pneumatic bag can expand and then blast around in clay pan to side, has therefore increased the utility model recharge well and has prevented that well casing from stopping up the safety stock of water burst.
Accompanying drawing explanation
In Fig. 1 recharge well that to be conventional recharge well tilt to cause due to the well casing generally occurring in becoming well construction process, stop up water burst pattern diagram;
Fig. 2 is the structural representation of recharge well provided by the utility model;
Fig. 3 is the structural representation of rubber pneumatic bag;
Fig. 4 is the one-tenth well construction view after rubber pneumatic bag sinks in wellhole;
Fig. 5 is the one-tenth well construction view after the concreting water-blocking layer of rubber pneumatic bag top.
In figure: 1, rubber pneumatic bag; 1-1, exhaust opening; 1-2, grouting port; 2, irony annulus; 3, clay pan; 4, intend recharging artesian aquifer; 5, well casing; 6, strainer; 7, sediment tube; 8, gravel filtration beds; 9, clay ball water barrier; 10, concrete water-blocking layer; 11, Grouting Pipe; 12, grouting pump.
The specific embodiment
For further understanding content of the present utility model, feature and effect, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
First, briefly introduce the obstruction water burst pattern of conventional recharge well.As shown in Figure 1, owing to becoming in well construction process, particularly, when performing concrete water-blocking layer 10, because needs carry out mechanical pudding to concrete, under inhomogeneous or asymmetric vibrating load effect, easily there is the inclination to a side in well casing 5.On the one hand, because clay ball water barrier 9 essence are cohesive soils that one deck particle is thinner, its plasticity makes it before well casing 5 does not tilt, just have definite shape, and after well casing 5 tilts, before water barrier medium clay soil ball does not have enough time to deform, in concrete water-blocking layer 10, uncured cement grout can flow in gravel filtration beds 8 and stop up gravel filtration beds 8 along the gap of 5 of water barrier medium clay soil ball and well casings under Action of Gravity Field, finally causes recharge well to lose efficacy; On the other hand, loose while not tilting compared with well casing 5 due to the lower end of the clay ball water barrier 9 of well casing 5 tendency one sides, in order there is recharge water in recharge well running, along gushing on well casing, provide may for this.
In order to overcome above-mentioned recharge well Problem of Failure, the utility model has designed a kind of recharge well that can prevent well casing obstruction water burst, makes rubber pneumatic bag 1 separate top concrete water-blocking layer 10 and its lower clay ball water barrier 9 completely.
As shown in Figure 2, wellhole center is disposed with sediment tube 7, strainer 6, well casing 5 from down to up, and well casing 5, strainer 6, sediment tube 7 are stainless steel tube, and docking is fixing mutually.
As shown in Figure 3, rubber pneumatic bag 1 shape is as doughnut, and it after being inflated and heaving, has round and smooth surface and inner and outer rings is circle.After rubber pneumatic bag 1 is inflated and heaves, should be able to put into the annular space between wellhole and well casing 2, and be continued can fit with well casing 2 tube walls and wellhole hole wall after inflation.
The space that all has 22.5mm between irony annulus 2 and wellhole hole wall and well casing 5 tube walls, so that irony annulus 2 can more convenient sinking in wellhole.On irony annulus 2, have two little through holes, the size of this through hole is to facilitate exhaust opening 1-1 on rubber pneumatic bag 1 and grouting port 1-2 through being as the criterion.
It is of the present utility model that a kind of can to prevent that well casing from stopping up the Specific construction step of recharge well of water burst as follows:
(1) verify and recharge position clay distribution, distinguish clay pan 3 and plan and recharge artesian aquifer 4, determine the length of recharge well sediment tube 7, strainer 6, well casing 5.
(2) prepare rubber pneumatic bag 1, according to designing requirement and rubber pneumatic bag 1 specification, calculate grouting amount A, B, the C of rubber pneumatic bag 1 under three kinds of states.When the grouting amount for rubber pneumatic bag 1 is A, rubber pneumatic bag 1 can be put into the annular space between wellhole and well casing 2, and and wellhole hole wall and well casing 5 tube walls between have obvious space.When the grouting amount for rubber pneumatic bag 1 is B, rubber pneumatic bag 1 can contact laminating with wellhole hole wall completely with well casing 5 tube walls.When the grouting amount for rubber pneumatic bag 1 is C, rubber pneumatic bag 1 can continue to occur volume expansion on contacting the basis of laminating completely with well casing 5 tube walls and wellhole hole wall.Therefore the magnitude relationship of three grouting amounts is A<B<C.
(3) on ground, recharge well sediment tube 7, strainer 6, well casing 5 docking are sunk in pre-drilled wellhole after fixing; To strainer 6 outer walls and plan recharge between artesian aquifer 4 drop into gravels to the above 2m～3m of strainer 6 as gravel filtration beds 8; Enclosing of gravel, more than the face of filling out first insert sea-tangle, then enclose fill out clay ball to the above 7m～10m of strainer 6 as clay ball water barrier 9.
(4) on ground, grouting pump 12 is connected with rubber pneumatic bag 1 by Grouting Pipe 11, to the interior injection of rubber pneumatic bag 1, has mixed in advance the cement grout (retarding agent consumption be cement grout cement quality 0.3%～0.45%) of retarding agent; Open the exhaust opening 1-1 on rubber pneumatic bag 1 simultaneously; When total grouting amount equals A, close exhaust opening 1-1, stop slip casting simultaneously.
(6) rubber pneumatic bag 1 is passed to well casing 5, now can see between rubber pneumatic bag 1 and wellhole hole wall and well casing 5 tube walls and have obvious space, on rubber pneumatic bag 1 top, place irony annulus 2, rubber pneumatic bag 1 and irony annulus 2 are slowly sunk in wellhole, until reach clay ball water barrier 9 tops, as shown in Figure 4.
(7) continue the interior slip casting of rubber pneumatic bag 1 until total grouting amount reaches B, according to design, now rubber pneumatic bag 1 should contact laminating with well casing 5 tube walls completely with wellhole hole wall.
(8) to concreting between well casing 5 tube walls and wellhole hole wall to form concrete water-blocking layer 10, in casting process, concrete is carried out to synchronous vibration tamping until well head, as shown in Figure 5.Due to the existence of rubber pneumatic bag 1, cement grout and bottom clay ball uncured in concrete are separated completely, have guaranteed the effect of water blockoff antiseepage.
(9) again to slip casting in rubber pneumatic bag 1 until total grouting amount reaches C, because the rubber pneumatic bag 1 concrete gravity load in top can evenly be passed to rubber pneumatic bag 1 by irony annulus 2, under this gravity load effect, rubber pneumatic bag 1 will expand to side, and can blast in clay pan 3, therefore increased the safety stock of water blockoff antiseepage, more as shown in Figure 2.
(10) sealing is taken off and carried out to Grouting Pipe 11 from grouting pump 12, Grouting Pipe 11 will be embedded in concrete water-blocking layer 10.
Although preferred embodiment of the present utility model is described with preferred embodiment by reference to the accompanying drawings above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing from the scope situation that aim of the present invention and claim protect; can also make the concrete conversion of a lot of forms, these all belong to protection domain of the present utility model.
Claims (6)
1. one kind can prevent that well casing from stopping up the recharge well of water burst, comprise wellhole, described wellhole center is disposed with docking fixing sediment tube, strainer, well casing from down to up, in the described wellhole of described strainer outside, be provided with gravel filtration beds, the top of described gravel filtration beds is positioned at the above 2m～3m of described strainer place, and described gravel filtration beds is provided with clay ball water barrier above, and the top of described clay ball water barrier is positioned at the above 7m～10m of described strainer place, it is characterized in that
Described clay ball water barrier top is provided with rubber pneumatic bag, in described rubber pneumatic bag, is filled with cement grout, and described rubber pneumatic bag is above is provided with concrete water-blocking layer to well head; Described rubber pneumatic bag side blasts in clay pan, and described clay pan is positioned at clay ball water barrier and concrete water-blocking layer is outside;
On described rubber pneumatic bag, be provided with exhaust opening and grouting port, described grouting port is connected with by described concrete water-blocking layer and stretches out the Grouting Pipe outside well head, and described Grouting Pipe is at the port closed of outer wellhead.
2. a kind of recharge well that can prevent well casing obstruction water burst according to claim 1, is characterized in that, between described rubber pneumatic bag and described concrete water-blocking layer, is provided with irony annulus.
3. a kind of recharge well that can prevent well casing obstruction water burst according to claim 2, is characterized in that between described irony annulus and described wellhole hole wall and described well casing tube wall, all there is the space of 17.5mm～22.5mm.
4. according to claim 2ly a kind ofly can prevent that well casing from stopping up the recharge well of water burst, it is characterized in that, on described irony annulus, offer the through hole that the exhaust opening that can make on rubber pneumatic bag and grouting port pass.
5. according to claim 1ly a kind ofly can prevent that well casing from stopping up the recharge well of water burst, it is characterized in that, described rubber pneumatic bag is to be inflated the torus after heaving with round and smooth surface, after described rubber pneumatic bag is inflated and heaves, can put into the annular space between wellhole and well casing, continue can fit with wellhole hole wall and well casing tube wall after inflation.
6. a kind of recharge well that can prevent well casing obstruction water burst according to claim 1, is characterized in that, described recharge well well casing, described strainer, described sediment tube are stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656046.XU CN203569578U (en) | 2013-10-23 | 2013-10-23 | Recharge well capable of preventing well casing blocking and water bursting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656046.XU CN203569578U (en) | 2013-10-23 | 2013-10-23 | Recharge well capable of preventing well casing blocking and water bursting |
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| CN203569578U true CN203569578U (en) | 2014-04-30 |
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| CN201320656046.XU Expired - Lifetime CN203569578U (en) | 2013-10-23 | 2013-10-23 | Recharge well capable of preventing well casing blocking and water bursting |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995976A (en) * | 2014-05-29 | 2014-08-20 | 西安建筑科技大学 | Prediction and diagnosis method for blocking of recharge wells based on permeability coefficient model |
| CN104265229A (en) * | 2014-09-01 | 2015-01-07 | 中国水利水电第六工程局有限公司 | Water burst blast hole plugging method |
| CN104265229B (en) * | 2014-09-01 | 2017-01-04 | 中国水利水电第六工程局有限公司 | A kind of shutoff method for retention of excessive fluid big gun hole |
| CN106812147A (en) * | 2017-01-25 | 2017-06-09 | 济南轨道交通集团有限公司 | A kind of sand-pebble layer protects spring inverted well construction method |
| CN108240011A (en) * | 2017-12-28 | 2018-07-03 | 中化地质矿山总局山东地质勘查院 | Construction method of high-pressure recharging well |
| CN111173015A (en) * | 2020-01-21 | 2020-05-19 | 上海勘察设计研究院(集团)有限公司 | Circulating inflatable type submersible dewatering and dewatering well structure and dewatering method |
| CN111173016A (en) * | 2020-01-21 | 2020-05-19 | 上海勘察设计研究院(集团)有限公司 | Grouting sealing bag type dewatering well wall water stop structure |
| CN111254962A (en) * | 2020-01-21 | 2020-06-09 | 上海勘察设计研究院(集团)有限公司 | Confined water rapid precipitation structure and precipitation method |
| CN111980044A (en) * | 2020-07-07 | 2020-11-24 | 济南轨道交通集团有限公司 | Dewatering well structure for separating adjacent aquifers and method for backfilling outside well wall |
| CN112482869A (en) * | 2020-11-09 | 2021-03-12 | 济南双纳商贸有限公司 | Energy-saving environment-friendly auxiliary device for mobile base station construction and capable of avoiding moisture permeation |
| CN114452712A (en) * | 2022-02-08 | 2022-05-10 | 核工业北京化工冶金研究院 | Solid-liquid separation device in reinjection water well |
-
2013
- 2013-10-23 CN CN201320656046.XU patent/CN203569578U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995976A (en) * | 2014-05-29 | 2014-08-20 | 西安建筑科技大学 | Prediction and diagnosis method for blocking of recharge wells based on permeability coefficient model |
| CN103995976B (en) * | 2014-05-29 | 2017-02-15 | 西安建筑科技大学 | Prediction and diagnosis method for blocking of recharge wells based on permeability coefficient model |
| CN104265229A (en) * | 2014-09-01 | 2015-01-07 | 中国水利水电第六工程局有限公司 | Water burst blast hole plugging method |
| CN104265229B (en) * | 2014-09-01 | 2017-01-04 | 中国水利水电第六工程局有限公司 | A kind of shutoff method for retention of excessive fluid big gun hole |
| CN106812147A (en) * | 2017-01-25 | 2017-06-09 | 济南轨道交通集团有限公司 | A kind of sand-pebble layer protects spring inverted well construction method |
| CN106812147B (en) * | 2017-01-25 | 2019-11-22 | 济南轨道交通集团有限公司 | A kind of sand-pebble layer guarantor spring inverted well construction method |
| CN108240011A (en) * | 2017-12-28 | 2018-07-03 | 中化地质矿山总局山东地质勘查院 | Construction method of high-pressure recharging well |
| CN111173016A (en) * | 2020-01-21 | 2020-05-19 | 上海勘察设计研究院(集团)有限公司 | Grouting sealing bag type dewatering well wall water stop structure |
| CN111173015A (en) * | 2020-01-21 | 2020-05-19 | 上海勘察设计研究院(集团)有限公司 | Circulating inflatable type submersible dewatering and dewatering well structure and dewatering method |
| CN111254962A (en) * | 2020-01-21 | 2020-06-09 | 上海勘察设计研究院(集团)有限公司 | Confined water rapid precipitation structure and precipitation method |
| CN111173016B (en) * | 2020-01-21 | 2021-12-17 | 上海勘察设计研究院(集团)有限公司 | Grouting sealing bag type dewatering well wall water stop structure |
| CN111254962B (en) * | 2020-01-21 | 2021-12-17 | 上海勘察设计研究院(集团)有限公司 | Confined water rapid precipitation structure and precipitation method |
| CN111980044A (en) * | 2020-07-07 | 2020-11-24 | 济南轨道交通集团有限公司 | Dewatering well structure for separating adjacent aquifers and method for backfilling outside well wall |
| CN112482869A (en) * | 2020-11-09 | 2021-03-12 | 济南双纳商贸有限公司 | Energy-saving environment-friendly auxiliary device for mobile base station construction and capable of avoiding moisture permeation |
| CN114452712A (en) * | 2022-02-08 | 2022-05-10 | 核工业北京化工冶金研究院 | Solid-liquid separation device in reinjection water well |
| CN114452712B (en) * | 2022-02-08 | 2023-03-14 | 核工业北京化工冶金研究院 | Solid-liquid separation device in reinjection water well |
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