CN213625655U - Isolation device for underground water at local pit bottom - Google Patents
Isolation device for underground water at local pit bottom Download PDFInfo
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- CN213625655U CN213625655U CN202022299792.0U CN202022299792U CN213625655U CN 213625655 U CN213625655 U CN 213625655U CN 202022299792 U CN202022299792 U CN 202022299792U CN 213625655 U CN213625655 U CN 213625655U
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Abstract
The utility model relates to a technical field is kept apart to groundwater, especially relates to an isolation device of local groundwater in hole bottom, including hole form isolation box, its bottom is equipped with 25mm steel plate, and the lateral wall of hole form isolation box is equipped with 6mm steel plate, and the lateral wall or the outside of hole form isolation box are provided with the triangle landing leg through strengthening the I-steel, and anti superficial structure sets up in the inside of hole form isolation box, and anti superficial structure includes anti superficial stock, channel-section steel, complementary unit, and anti superficial stock stretch-draw sets up on hole form isolation box, and the cloth hole position of anti superficial stock has welded the channel-section steel hole, still installs complementary unit on the anti superficial stock, and the sump pit elevartor shaft sets up in the outside of hole form isolation box. After the pit-shaped make-up frost is installed and the anti-floating anchor rod is tensioned and locked, the pit outer dredging well can stop pumping water, so that the pumping period is greatly shortened, the total pumping amount is reduced, and the underground water resource is protected; and the structure is simple, the construction is rapid, the cost is lower compared with a precipitation or water interception scheme, and the social effect is highest.
Description
Technical Field
The utility model relates to a groundwater is kept apart technical field, especially relates to an isolating device of local groundwater at bottom of pit.
Background
When the underground structure is in the earth excavation construction stage, underground water is located above the elevation of a substrate, special underground water treatment is needed in a precipitation or water interception mode, and earth excavation and subsequent structure construction dry groove operation are guaranteed. When the large-area foundation pit base is located above the ground water level, only the local water collecting pit and the elevator shaft base are located below the ground water level, only the local ground water at the pit bottom needs to be treated.
The treatment scheme of precipitation or water interception can be adopted for the underground water at the bottom of the local pit. The traditional precipitation scheme arranges a circle of closed precipitation wells outside the top of a sump pit and an elevator shaft pit for pumping water, and the pumping of water can be stopped until the foundation slab construction is finished, so that the precipitation period is long, the water pumping for a long time easily causes water and soil loss and ground settlement, the underground water supply of a stratum with a large permeability coefficient is sufficient, and a large amount of water pumping is a serious waste to water resources. The traditional intercepting scheme arranges the closed stagnant water curtain of round outside sump pit, elevator well pit top, and stable water barrier is stretched into to the curtain bottom, and to the darker firm stratum of water barrier, the curtain construction degree of difficulty is very big and there is the seepage probably, need arrange in the pit and dredge the well cooperation and dredge groundwater.
The traditional precipitation or water interception scheme has the advantages of long construction period, high cost and low social benefit, and cannot meet the increasingly developed current social requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an isolation device for underground water at the bottom of a pit.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an isolating device of local groundwater in hole bottom, includes hole form shielded box, and its bottom is provided with 25mm steel plate, and the lateral wall of hole form shielded box is equipped with 6mm steel plate, and the lateral wall of hole form shielded box or outside are provided with the triangle landing leg through strengthening the I-steel, and anti structure of floating sets up in the inside of hole form shielded box, and anti structure of floating includes anti stock, channel-section steel, complementary unit, and anti stock stretch-draw sets up on hole form shielded box, and the cloth hole position of anti stock of floating adds and has welded the channel-section steel, still install complementary unit on the anti anchor stock of floating, the sump pit elevartor shaft sets up in the outside of above-mentioned hole form shielded box, dredges the outside that the well is located the sump pit elevarto.
Preferably, the auxiliary mechanism comprises an angle plate, a steel base plate and an anchorage device, and the angle plate, the steel base plate and the anchorage device are all arranged on the anti-floating anchor rod.
Preferably, the 25mm thick steel plate and the side wall 6mm thick steel plate are spliced into a whole in a full-length welding and double-side welding mode.
Preferably, the pit-shaped isolation box and the side wall are welded with the I-shaped steel in a double-sided half full-weld connection mode to form a # -shaped grid reinforcing body, and steel strips are welded inside the pit-shaped isolation box.
Preferably, the channel steel is in full-welded connection with the steel plate of the side wall of the pit-shaped isolation box.
Compared with the prior art, the pit-shaped make-up base of the utility model is installed completely, after the anti-floating anchor rod is tensioned and locked, the well outside the pit can stop pumping water, thereby greatly shortening the pumping period, reducing the total pumping amount and protecting the underground water resources; and the structure is simple, the construction is rapid, the cost is lower compared with a precipitation or water interception scheme, and the social effect is highest.
Drawings
Fig. 1 is a front view of an isolation device for underground water at a local pit bottom according to the present invention;
FIG. 2 is a top view of a device for isolating groundwater locally in a pit bottom according to the present invention;
FIG. 3 is a bottom view of the isolation device for underground water in the local area of the pit bottom;
fig. 4 is a cross-sectional view of the isolation device for local groundwater in the pit bottom according to the present invention.
In the figure: the pit-shaped isolation box comprises a pit-shaped isolation box 1, an anti-floating structure 2, a drainage well 3, a sump elevator shaft 4, a 25mm thick steel plate 5, a 6mm thick steel plate 6, I-shaped steel 7, triangular supporting legs 8, anti-floating anchor rods 9, channel steel 10 and an auxiliary mechanism 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the embodiment of the utility model provides an isolating device of local groundwater in hole bottom, including hole form shielded box 1, its bottom is provided with 25mm steel plate 5, and the lateral wall that just hole form shielded box 1 is equipped with 6mm steel plate 6, the lateral wall or the outside of hole form shielded box 1 are provided with triangle landing leg 8 through strengthening I-steel 7, anti-floating structure 2 sets up in the inside of hole form shielded box 1, and anti-floating structure 2 includes anti-floating anchor rod 9, channel-section steel 10, complementary unit 11, anti-floating anchor rod 9 stretch-draw sets up on hole form shielded box 1, and the cloth hole position of anti-floating anchor rod 9 has welded channel-section steel 10, still install complementary unit 11 on anti-floating anchor rod 9, pit elevartor shaft 4 sets up in the outside of hole form shielded box 1, it is located the outside of pit 4 to dredge dry well 3.
In the embodiment, the auxiliary mechanism 11 includes an angle plate, a steel pad plate and an anchor, and the angle plate, the steel pad plate and the anchor are all disposed on the anti-floating anchor rod 9.
Wherein, the 25mm thick steel plate 5 and the side wall 6mm thick steel plate 6 are spliced into a whole in a full-length welding and double-side welding mode.
Specifically, the inside and the outside of the side wall of the pit-shaped isolation box 1 are welded with the I-shaped steel 7 in a double-sided half full-weld connection mode to form a # -shaped grid reinforcing body, and steel strips are welded inside the pit-shaped isolation box 1.
Specifically, the channel steel 10 is in full-welded connection with the steel plate on the side wall of the pit isolation box 1.
When the device is implemented, the anti-floating anchor rod 9 and the pit outer dredging well 3 are constructed in advance according to the position of the pit-shaped isolation box 1 and the underground water level elevation before the sump pit elevator shaft 4 is excavated, and the specific parameters of the anti-floating anchor rod 9 and the dredging well 3 are determined through calculation.
Compare catch pit, 4 sizes of elevartor shaft, 1 bottom of hole form isolation box expands 0.4m outward, and lateral wall expands 0.2m outward and makes level the space as the reinforcement, and bottom half 25mm steel sheet 5 splices into a whole with lateral wall 6mm steel sheet 6 according to the mode of full weld, double-side welding, guarantees to seal that hole form isolation box is waterproof.
In order to prevent the deformation of the pit-shaped isolation box 1 from being overlarge, the inside and the outside of the side wall of the box body and the I-shaped steel 7 are welded in a double-sided half full-weld connection mode to form a # -shaped grid reinforcing body, and meanwhile, the steel plate connecting part of the box body is stressed greatly and is easily deformed and welded with steel plate strips for reinforcement.
Because of the atress of anti-floating anchor 9 increases, add the welding channel-section steel 10 in the inside cloth hole position of hole form shielded cell 1, as the reinforcement measure to anti-floating anchor 9 stretch-draw position box lateral wall, fully weld channel-section steel 10 and box lateral wall steel sheet simultaneously and be connected in order to prevent leaking.
In order to ensure that the pit-shaped isolation box 1 is stably placed, the triangular supporting legs 8 are additionally arranged outside the caisson and are formed by welding 8# channel steel, the triangular supporting legs are welded with the side wall of the box body or the outside reinforcing I-steel 7, a reinforced concrete structure is formed by backfilling C20 concrete with the side wall, and the effect of tie fixing on the box body is increased.
For the convenience of pit bottom position, elevation and slope gradient control in the 4 earthwork excavation processes of sump pit elevartor shaft, utilize construction dredging well 3 to install the water pump and draw water and fall groundwater to 0.5 ~ 1.0m below the pit bottom, sump pit elevartor shaft 4 earthwork excavation bottom is dug 0.4m excessively, and the lateral wall is dug 0.5m excessively, is convenient for pit form shielded box 1 to install.
After the earthwork is excavated to the base and dried, a flat vibrator is used for vibrating to compact the soil body of the base, then the pit-shaped isolation box 1 is installed, the position of the box body is continuously adjusted in the installation process to ensure that the box body is smoothly put down to a preset position and a designed elevation, and C20 concrete compaction is backfilled at the overexcavation part outside the side wall of the box body.
After the strength of backfill concrete on the side wall of the pit-shaped isolation box 1 reaches 75%, an angle plate, a steel base plate and an anchorage device are installed, an anti-floating anchor rod 9 is tensioned and locked, after tensioning and locking are completed, an anchor head cuts redundant prestressed steel strands and is sealed by a pre-processed box cap, it is ensured that no water outlet point exists inside the box body, and then the pit outer dredging well 3 stops pumping water.
To sum up, the utility model discloses the installation of hole form sun screen finishes, anti-floating anchor pole stretch-draw locking back, and the outer unwatering well in hole can stop drawing water, shortens the cycle of drawing water greatly, reduces total water output, is a protection to groundwater resources, and simple structure, and the construction is swift, and relative precipitation or cut water scheme cost are lower, and social effect is higher.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Claims (5)
1. An isolation device for underground water locally at the bottom of a pit, comprising:
the bottom of the pit-shaped isolation box (1) is provided with a steel plate (5) with the thickness of 25mm, the side wall of the pit-shaped isolation box (1) is provided with a steel plate (6) with the thickness of 6mm, and the side wall or the outside of the pit-shaped isolation box (1) is provided with a triangular supporting leg (8) through a reinforcing I-shaped steel (7);
the anti-floating structure (2) is arranged inside the pit-shaped isolation box (1), the anti-floating structure (2) comprises anti-floating anchor rods (9), channel steel (10) and auxiliary mechanisms (11), the anti-floating anchor rods (9) are stretched and arranged on the pit-shaped isolation box (1), the channel steel (10) is additionally welded at the hole distribution positions of the anti-floating anchor rods (9), and the auxiliary mechanisms (11) are further installed on the anti-floating anchor rods (9);
a sump elevator shaft (4) provided outside the pit-shaped isolation box (1);
and the drying well (3) is positioned outside the sump elevator shaft (4).
2. The isolation device of the local underground water of the pit bottom according to claim 1, characterized in that the auxiliary mechanism (11) comprises an angle plate, a steel backing plate and an anchor, and the angle plate, the steel backing plate and the anchor are all arranged on the anti-floating anchor rod (9).
3. The isolation device for underground water of a pit bottom local part according to claim 1, wherein the 25mm thick steel plate (5) and the side wall 6mm thick steel plate (6) are spliced into a whole in a full-weld and double-side-weld mode.
4. The isolation device for the underground water with the local pit bottom according to the claim 1 is characterized in that the inside and the outside of the side wall of the pit-shaped isolation box (1) are welded with I-shaped steel (7) by adopting a double-sided half full-weld connection mode to form a # -shaped grid reinforcing body, and steel plate strips are welded inside the pit-shaped isolation box (1).
5. An isolation device of a pit bottom local groundwater according to claim 1, characterized in that the channel steel (10) is in full-welded connection with a steel plate on the side wall of the pit isolation box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022299792.0U CN213625655U (en) | 2020-10-14 | 2020-10-14 | Isolation device for underground water at local pit bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022299792.0U CN213625655U (en) | 2020-10-14 | 2020-10-14 | Isolation device for underground water at local pit bottom |
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| CN213625655U true CN213625655U (en) | 2021-07-06 |
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| CN202022299792.0U Active CN213625655U (en) | 2020-10-14 | 2020-10-14 | Isolation device for underground water at local pit bottom |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668583A (en) * | 2021-08-24 | 2021-11-19 | 中国建筑第二工程局有限公司 | Construction structure for fixing caisson by using anchor rod and construction method thereof |
-
2020
- 2020-10-14 CN CN202022299792.0U patent/CN213625655U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668583A (en) * | 2021-08-24 | 2021-11-19 | 中国建筑第二工程局有限公司 | Construction structure for fixing caisson by using anchor rod and construction method thereof |
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