CN212801604U - Filling-free rapid plugging device for reserved dewatering well opening of foundation pit bottom plate - Google Patents
Filling-free rapid plugging device for reserved dewatering well opening of foundation pit bottom plate Download PDFInfo
- Publication number
- CN212801604U CN212801604U CN202020557105.8U CN202020557105U CN212801604U CN 212801604 U CN212801604 U CN 212801604U CN 202020557105 U CN202020557105 U CN 202020557105U CN 212801604 U CN212801604 U CN 212801604U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- bottom plate
- steel
- water pump
- plugging device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The utility model provides a foundation ditch bottom plate reserves quick plugging device of fill-free of precipitation well entrance to a cave, includes steel pipe, water pump, fluke, its characterized in that: the diameter of the steel pipe is matched with that of the dewatering well pipe at the lower part of the bottom plate, the wall thickness of the steel pipe is more than or equal to 10mm, and the length of the steel pipe is more than or equal to 500 mm; the water pump is provided with a water pump water pumping steel pipe, the lower part of the water pump water pumping steel pipe is connected with the foundation pit water pumping steel pipe, and the upper part of the water pump water pumping steel pipe is connected with the water pump; the fluke is U-shaped reinforcing bar, and the both ends elbow length of U-shaped reinforcing bar is 100mm, and fluke length is 250 mm. The utility model discloses a foundation ditch bottom plate reserves precipitation well entrance to a cave fill-free quick plugging device has plugging device simple structure, preparation convenience, and foundation ditch precipitation shutoff engineering safe and reliable becomes the bottom plate and reserves precipitation well entrance to a cave fill-free quick plugging device, and it is convenient to be under construction, and plugging device establishes multichannel water-proof measures, and the strong advantage of guaranteeing that a shutoff targets in place and reduces engineering cost.
Description
Technical Field
The utility model relates to a plugging device, specifically speaking are quick plugging device is exempted from to fill in precipitation well entrance to a cave reserved to foundation ditch bottom plate.
Background
With the vigorous development of construction projects in China, the number of corresponding foundation pit projects is continuously increased, the scale is increased, the depth of the foundation pit is deepened, and the foundation pit precipitation faces a new test under complex hydrogeological conditions. At present, foundation pits with large scale and deep depth are more in China, when a bottom plate is positioned in other strong permeable layers with pebbles and the like, pit-in-pit (water collecting pit, elevator shaft and the like) are influenced by underground water, construction difficulty is large, and secondary precipitation of a hole is reserved on a local bottom plate during foundation construction to ensure smooth construction of the pit-in-pit. However, the holes of the bottom plate are difficult to block due to the large underground water pressure of the parts, especially the traditional filling type blocking method is difficult to add under the condition that the dewatering wells around the foundation pit are stopped in the later period, and the direct blocking can cause more leakage gaps to be formed in the concrete under the water pressure, so that the construction compactness of the concrete cannot be ensured. Because long-term drainage makes most underground confined water gather in the precipitation well of this type of foundation ditch naturally, intangible greatly increased foundation ditch precipitation well water pressure and water yield, in case stop precipitation, the water level sharply rises, and great water pressure in the underground can directly lead to later stage bottom plate hole shutoff comparatively difficult.
Therefore, the known foundation pit bottom plate reserved precipitation plugging device has various inconveniences and problems.
Disclosure of Invention
The utility model aims at providing a safe and reliable's foundation ditch bottom plate reserves precipitation well entrance to a cave exempts from to fill quick plugging device.
In order to achieve the above object, the technical solution of the present invention is:
the utility model provides a foundation ditch bottom plate reserves quick plugging device of fill-free of precipitation well entrance to a cave, includes steel pipe, water pump, a plurality of fluke, its characterized in that:
the diameter of the steel pipe is matched with that of the dewatering well pipe at the lower part of the bottom plate, the wall thickness of the steel pipe is more than or equal to 10mm, and the length of the steel pipe is more than or equal to 500 mm; two water stopping wing rings with the space of 100mm are arranged on the outer side of the steel pipe; a plurality of bottom supports are arranged at the positions 50mm away from the bottom of the inner side of the steel pipe; two plugging steel plates with the thickness of 10mm are arranged at the bottom of the steel pipe, the diameter of one plugging steel plate is the same as the inner diameter of the steel pipe, and a DN75 water pump pumping pipe hole and a DN25 electric wire sleeve pipe hole are reserved in the center of the plugging steel plate;
the water pump is a submersible pump, the water pump is provided with a water pump pumping steel pipe inserted into a dewatering well pipe, the specification of the water pump pumping steel pipe is DN75, the length of the water pump pumping steel pipe is more than or equal to 1m, the top of the water pump pumping steel pipe is provided with a gate valve, and the bottom of the water pump pumping steel pipe is connected with the water pump by a soft water belt; providing a wire steel sleeve DN25 with the length of 0.5m, and preparing a plug for the wire steel sleeve;
the fluke sets up the inboard at the steel pipe of gate valve top for U-shaped reinforcing bar is in pairs, and the both ends elbow length of U-shaped reinforcing bar is 100mm, and fluke length is 250 mm.
The utility model discloses a quick plugging device of packing is exempted from to fill by foundation ditch bottom plate reservation precipitation well entrance to a cave can also adopt following technical measure to further realize.
The filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate is characterized in that the steel pipe is a seamless steel pipe.
The filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate is characterized in that the specification of the pumping steel pipe is more than or equal to DN32 steel pipe.
According to the filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate, the U-shaped steel bars are III-grade steel bars with the diameter being larger than or equal to 10 mm.
The filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate is characterized in that the water-stopping wing ring is a steel plate with the width being more than or equal to 100 mm.
The filling-free rapid plugging device for the hole of the dewatering well reserved on the foundation pit bottom plate is characterized in that the water-stopping wing ring is a steel plate with the thickness of more than or equal to 8 mm.
The filling-free rapid plugging device for the hole of the foundation pit reserved with the dewatering well is characterized in that the two water-stopping wing ring steel plates are perpendicular to the axis of the steel pipe respectively.
According to the filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate, the bottom support is a support seat with reinforcing steel bar heads arranged at equal intervals and used for plugging the lower surface of the steel plate.
After the technical scheme is adopted, the utility model discloses a quick plugging device of fill exempting from of precipitation well entrance to a cave is reserved to foundation ditch bottom plate has following advantage:
1. the plugging device has simple structure and convenient manufacture;
2. the foundation pit dewatering plugging engineering is safe and reliable, and becomes a filling-free rapid plugging device for the reserved dewatering well opening of the bottom plate;
3. the construction is convenient, and plugging device establishes multichannel waterproofing measure, and the shutoff of forceful guarantee once targets in place, reduces engineering cost.
Drawings
Fig. 1 is a schematic structural view of a plugging device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another plugging device according to an embodiment of the present invention;
fig. 3 is the schematic diagram of concrete pouring inside and outside the steel pipe of the plugging device of the embodiment of the present invention.
In the figure: 1 water pump drinking-water pipe, 2 shutoff steel sheets, 3 steel pipes, 4 stagnant water wing rings, 5 electric wire cover tube holes, 6 end caps, 7 gate valves, 8 flukes, 9 collet, 10 foundation ditch bottom plates, 11 sealed oleamen, 12 steel pipes that pump, 13 immersible pumps, 14 outside concretings of steel pipe, 15 inside concretings of steel pipe.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
Example 1
The utility model discloses a quick plugging device of filling is exempted from to precipitation well entrance to a cave reserved by foundation ditch bottom plate, including steel pipe, water pump, fluke.
Fig. 1 is a schematic structural view of a plugging device according to an embodiment of the present invention. The diameter of the steel pipe 3 is matched with that of the dewatering well pipe at the lower part of the bottom plate, the wall thickness of the steel pipe is 10mm, and the length of the steel pipe is 500 mm; two water stopping wing rings 4 with the space of 100mm are arranged on the outer side of the steel pipe 3; a plurality of bottom supports 9 are arranged at the positions 50mm away from the bottom of the inner side of the steel pipe; the bottom of the steel pipe is provided with a 10mm thick plugging steel plate 2, the diameter of the plugging steel plate is the same as the inner diameter of the steel pipe, and a DN75 water pump pumping pipe hole and a DN25 electric wire sleeve pipe hole 5 are reserved in the center of the plugging steel plate; the steel pipe is seamless steel pipe, the steel pipe specification of drawing water is DN32 steel pipe. The bottom support is a supporting seat used for plugging the lower surface of the steel plate by reinforcing steel bar heads arranged at equal intervals. Fig. 2 is a schematic structural diagram of another plugging device according to an embodiment of the present invention.
The water pump is a submersible pump, the water pump is provided with a water pump pumping pipe 1 inserted into a dewatering well pipe, the water pump pumping steel pipe 12 is DN75 in specification and 1m in length, the top of the water pump pumping pipe is provided with a gate valve 7, and the bottom of the water pump pumping pipe is connected with the water pump by a soft water belt; providing a wire steel sleeve DN25 with the length of 0.5m, and preparing a plug 6 for the wire steel sleeve; the water-stopping wing ring is a steel plate with the width of 100 mm. The water-stopping wing ring is a steel plate with the width of 100 mm. The water-stopping wing ring is a steel plate with the thickness of 8 mm. The two water stop wing ring steel plates are respectively vertical to the axis of the steel pipe.
The fluke sets up the inboard at the steel pipe of gate valve top for U-shaped reinforcing bar is in pairs, and the both ends elbow length of U-shaped reinforcing bar is 100mm, and fluke 8 length is 250 mm. The U-shaped reinforcing steel bar is a grade III reinforcing steel bar with the diameter of 10 mm.
Example 2
The utility model discloses a foundation ditch bottom plate reserves precipitation well entrance to a cave fill-free quick plugging device's application method, including following step:
a. manufacturing foundation pit bottom plate reserved precipitation plugging device
And (3) according to the size of the square hole reserved on the foundation pit bottom plate 10 and the diameter of the precipitation well pipe on the lower part of the bottom plate, correspondingly manufacturing the foundation pit bottom plate reserved precipitation plugging device in a matched mode.
b. Fixing a steel pipe and pouring concrete on the outer side, comprising the following steps:
(1) the steel pipe is placed on the upper part of the original concrete well pipe and simply fixed, and the submersible pump 13 is immediately placed into the well bottom from the steel pipe to normally pump water. The distance between the top of the steel pipe with the length of 500mm and the structural surface of the bottom plate of the ground warehouse is 100mm (the thickness of the bottom plate is 400 mm), and the distance between the bottom of the steel pipe and the structural bottom of the bottom plate of the ground warehouse is 200 mm; after the steel pipe is in place, the steel pipe and the bottom ribs of the bottom plate of the ground reservoir are fixedly welded, and the periphery of the steel pipe is reinforced by 8 steel bars which are higher than the bottom plate steel bars by one level. The gap between the original concrete pipe and the inner lining of the steel pipe is sealed by adopting sealing ointment 11, and the waterproof coiled material is effectively bonded with the outer wall of the steel pipe by adopting a hot melting method. Fig. 3 is the schematic diagram of concrete pouring inside and outside the steel pipe of the plugging device of the embodiment of the present invention.
(2) The concrete 14 poured outside the steel pipe is C40/P8 micro-expansion concrete, which is improved by one grade compared with the original structural bottom plate concrete. Pouring in layers and vibrating to be compact, and the curing time is longer than 14 days.
c. The welding of the plugging steel plate comprises the following steps:
(1) and after the maintenance reaches the specified time, the 1 st submersible pump is closed and lifted out of the well, and the 2 nd submersible pump 16 is replaced to pump water. A submersible pump steel pipe and a wire sleeve are welded with the preformed hole of the plugging steel plate in advance, the height of the plugging steel plate from the top end of the water pump steel pipe is 100mm, a gate valve is installed, and a No. 1 submersible pump is installed at the bottom end of the water pump steel pipe and protected by a gauze; when the 1 st submersible pump is put forward, the 2 nd submersible pump is rapidly put into the precipitation well together with the water pump steel pipe and the plugging steel plate, the length of the water pump steel pipe is processed and installed according to the actual depth of the precipitation well, the length of the water pump pipe is not more than 0.3 time of the depth of the precipitation well, and the bottom of the water pump pipe is connected with the water pump by adopting a soft water belt.
(2) The blocking steel plate is guaranteed to be stably placed on a bottom support of the blocking steel plate, and the No. 2 submersible pump is used for pumping water immediately.
(3) And (3) performing full-length welding on the steel pipe and the blocking steel plate after the welding position is wiped by using a dry towel, wherein the leg height of a fillet weld meets the standard requirement, and quality defects such as meat biting, slag inclusion and the like cannot occur.
(4) Closing the gate valve and installing a finished wire casing plug when the strength of the concrete on the outer side of the steel pipe reaches 100%; the water level is raised, the pressure is increased, the welding line, the construction joint and the like are checked to ensure that no leakage phenomenon exists, the observation time is not less than 7 days, and the next procedure can be carried out without any leakage phenomenon.
(5) If water seepage occurs in the welding seam, the construction seam and the like in the link, the gate valve can be opened to continue precipitation, the treatment of the water seepage part is not influenced, and all hidden water leakage hazards are eliminated, so that the primary plugging qualification rate is more effectively ensured;
d. pouring concrete on the upper part of the steel pipe, comprising the following steps:
(1) three layers of U-shaped reinforcing steel bar anchor flukes are welded at intervals of 200mm and in a plum blossom shape inside the steel pipe, the U-shaped reinforcing steel bars are threaded reinforcing steel bars with the diameter of 10mm, the lengths of elbows at two ends are 100mm, the lengths of the anchor flukes are 250mm, and the integrity and the anti-surge stability of the foundation pit bottom plate are better improved.
(2) And (4) pulling through the upper reinforcing steel bars of the bottom plate from the top of the steel pipe, and welding and connecting the upper reinforcing steel bars of the bottom plate with the upper reinforcing steel bars of the peripheral original ground storehouse, wherein the single-side welding is not less than 10 d.
(3) The steel pipe has an inner casting concrete 15 of the same grade as the outer casting concrete 14. The concrete adopts C40P8 micro-expansive concrete, is poured in layers and is compacted by vibration, and the curing time is not less than 14 days.
The utility model has the characteristics of substantively and the technological progress that is showing, the utility model discloses a foundation ditch bottom plate reserves the quick plugging device of fill-free of precipitation well entrance to a cave is a foundation ditch bottom plate reserves the quick plugging device of fill-free of precipitation well entrance to a cave, and it is great that pit (sump pit, elevartor shaft etc.) in the hole (the sump pit, elevartor shaft etc.) in other strong permeable beds such as cobble are influenced the construction degree of difficulty by groundwater to be in the geology when the bottom plate, and local bottom plate reserves entrance to a cave secondary precipitation and ensures that pit is under construction smoothly during basic construction. Thereby great water pressure in the underground can directly lead to the later stage bottom plate hole shutoff comparatively difficult, adopts the foundation ditch bottom plate to reserve precipitation well entrance to a cave plugging device construction can more convenient, effectual solution. Increase steel pipe device shutoff precipitation well in the bottom plate reservation hole, make the concrete can not receive the influence of groundwater at the in-process of pouring, such way can guarantee the smooth pouring of concrete, has improved concrete pouring's closely knit degree, and plugging device multichannel waterproof measure reduces the possibility of structure bottom plate infiltration, is convenient for inspect the seepage in advance and guarantees the shutoff quality, satisfies other requirements such as building service function.
The above embodiments are provided only for the purpose of illustration, and not for the purpose of limitation, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention, which is defined by the claims.
Claims (8)
1. The utility model provides a foundation ditch bottom plate reserves quick plugging device of fill-free of precipitation well entrance to a cave, includes steel pipe, water pump, a plurality of fluke, its characterized in that:
the diameter of the steel pipe is matched with that of the dewatering well pipe at the lower part of the bottom plate, the wall thickness of the steel pipe is more than or equal to 10mm, and the length of the steel pipe is more than or equal to 500 mm; two water stopping wing rings with the space of 100mm are arranged on the outer side of the steel pipe; a plurality of bottom supports are arranged at the positions 50mm away from the bottom of the inner side of the steel pipe; two plugging steel plates with the thickness of 10mm are arranged at the bottom of the steel pipe, the diameter of one plugging steel plate is the same as the inner diameter of the steel pipe, and a DN75 water pump pumping pipe hole and a DN25 electric wire sleeve pipe hole are reserved in the center of the plugging steel plate;
the water pump is a submersible pump, the water pump is provided with a water pump pumping steel pipe inserted into a dewatering well pipe, the specification of the water pump pumping steel pipe is DN75, the length of the water pump pumping steel pipe is more than or equal to 1m, the top of the water pump pumping steel pipe is provided with a gate valve, and the bottom of the water pump pumping steel pipe is connected with the water pump by a soft water belt; providing a wire steel sleeve DN25 with the length of 0.5m, and preparing a plug for the wire steel sleeve;
the fluke sets up the inboard at the steel pipe of gate valve top for U-shaped reinforcing bar is in pairs, and the both ends elbow length of U-shaped reinforcing bar is 100mm, and fluke length is 250 mm.
2. The filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate as claimed in claim 1, wherein the steel pipe is a seamless steel pipe.
3. The filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate as claimed in claim 1, wherein the specification of the pumping steel pipe is equal to or larger than DN32 steel pipe.
4. The filling-free rapid plugging device for the foundation pit bottom plate reserved dewatering well opening as claimed in claim 1, wherein the U-shaped steel bars are III-grade steel bars with the diameter being more than or equal to 10 mm.
5. The filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate as claimed in claim 1, wherein the water-stopping wing ring is a steel plate with the width of more than or equal to 100 mm.
6. The filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate as claimed in claim 1, wherein the water-stopping wing ring is a steel plate with the thickness of more than or equal to 8 mm.
7. The filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate as claimed in claim 1, wherein the water-stopping wing ring is perpendicular to the steel pipe axis.
8. The filling-free rapid plugging device for the reserved dewatering well opening of the foundation pit bottom plate as claimed in claim 1, wherein the bottom support is provided with equally spaced reinforcing steel bar heads as a support seat for plugging the lower surface of the steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020557105.8U CN212801604U (en) | 2020-04-15 | 2020-04-15 | Filling-free rapid plugging device for reserved dewatering well opening of foundation pit bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020557105.8U CN212801604U (en) | 2020-04-15 | 2020-04-15 | Filling-free rapid plugging device for reserved dewatering well opening of foundation pit bottom plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212801604U true CN212801604U (en) | 2021-03-26 |
Family
ID=75080243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020557105.8U Active CN212801604U (en) | 2020-04-15 | 2020-04-15 | Filling-free rapid plugging device for reserved dewatering well opening of foundation pit bottom plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212801604U (en) |
-
2020
- 2020-04-15 CN CN202020557105.8U patent/CN212801604U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111501805A (en) | Foundation pit bottom plate reserved precipitation plugging device and application method thereof | |
| CN204080836U (en) | The fast plugging device of dewatering well in a kind of building basement | |
| CN109736340B (en) | Dewatering device and method for guaranteeing integrity of cushion layer by reserving dewatering well on foundation slab | |
| CN204530733U (en) | Underground construction deep-well precipitation well head plugging structure | |
| CN111501858A (en) | Construction method for detecting leakage by using foundation pit bottom plate dewatering well plugging device | |
| CN105926682A (en) | Basement baseplate post-cast strip construction method with pressure bearing water and higher water pressure | |
| CN109025899B (en) | Well sealing device | |
| CN205116159U (en) | Supporting rig dry process pore -forming bored concrete pile that digs soon of back slip casting | |
| CN204080839U (en) | A kind of Yield rainfall relation device | |
| CN212801604U (en) | Filling-free rapid plugging device for reserved dewatering well opening of foundation pit bottom plate | |
| CN212801603U (en) | Foundation pit bottom plate reserved precipitation plugging device | |
| CN110565740B (en) | Method for connecting open hole of submarine tunnel and riser | |
| CN216475060U (en) | Occlusive pile structure with reinforcing function | |
| CN214363658U (en) | Seamless waterproof structure of prestressed anchor rod reverse construction method | |
| CN204551551U (en) | A kind of ground-connecting-wall seam leak detection and grouting for water plugging device | |
| CN211948373U (en) | Prefabricated underground continuous wall joint structure | |
| CN106567415A (en) | Drain sleeve for preventing basement floating upward and use method | |
| CN220908446U (en) | Novel dewatering well shutoff connects | |
| CN209837065U (en) | Non-penetrating local precipitation construction structure | |
| CN220598488U (en) | Plugging device for deep well of building engineering after lowering underground water level | |
| CN219671406U (en) | Flange sealing device for bottom plate drop drainage well | |
| CN214993984U (en) | Be used for basement bottom plate to reserve variable cross section precipitation well structure | |
| CN216304686U (en) | Deep basal pit pipe well precipitation well plugging device | |
| CN212294683U (en) | Wall joint water stopping device for underground continuous wall sleeve milling process | |
| CN215669620U (en) | Plugging structure of dewatering well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |