阅读说明：本技术 一种喷涌岩溶裂隙水封堵装置及封堵方法 (Gushing karst fracture water plugging device and method ) 是由 王维 廖志相 韦鸿梅 韦联杰 覃正华 庄良才 韦灵巧 于 2021-08-12 设计创作，主要内容包括：本发明公开了一种喷涌岩溶裂隙水封堵装置及封堵方法,包括封堵工具底座和盖板,封堵工具底座包括底托、多个侧壁和翼环,每个侧壁分别与底托固定连接,并均位于侧壁的上方,且多个侧壁以此首尾连接,翼环分别与多个侧壁固定连接,并均位于侧壁的上方,盖板盖合于翼环的上方。通过将该装置放置到涌水处的集水井内,随后采用混凝土浇筑封堵至底托的上部200mm的位置,此时底托起到止水的作用,密封的侧壁保证地下水不能渗出,然后将盖板与翼环盖合,进一步达到岩溶裂隙水的封堵效果。(The invention discloses a gushing karst fracture water plugging device and a plugging method, wherein the gushing karst fracture water plugging device comprises a plugging tool base and a cover plate, the plugging tool base comprises a bottom support, a plurality of side walls and wing rings, each side wall is fixedly connected with the bottom support and is positioned above the side wall, the side walls are connected end to end, the wing rings are fixedly connected with the side walls and are positioned above the side walls, and the cover plate covers the wing rings. Through placing the device in the sump pit of gushing water department, adopt concrete placement shutoff to the upper portion 200 mm's of collet position afterwards, the collet plays the effect of stagnant water this moment, and sealed lateral wall guarantees that groundwater can not ooze, then closes apron and wing ring lid, further reaches the shutoff effect of karst crack water.)

1. A water seal blocking device for gushing karst fractures, which is characterized in that,

including shutoff instrument base and apron, shutoff instrument base includes collet, a plurality of lateral wall and wing ring, every the lateral wall respectively with collet fixed connection, and all be located the top of lateral wall, and a plurality of the lateral wall is with this end to end connection, the wing ring respectively with a plurality of lateral wall fixed connection, and all be located the top of lateral wall, the apron lid fits the top of wing ring.

2. The water plugging device for gushing karst fractures according to claim 1,

the outer edge of the wing ring is provided with a plurality of first bolt holes, the cover plate is provided with a plurality of reserved bolt holes, and the axial center line of each reserved bolt hole is overlapped with the axial center line of each first bolt hole.

3. The water plugging device for gushing karst fractures according to claim 2,

the gushing karst fracture water plugging device further comprises a rubber gasket, wherein the rubber gasket is fixedly connected with the cover plate, is positioned below the cover plate and is positioned between the cover plate and the wing ring.

4. The water plugging device for gushing karst fractures according to claim 1,

the gushing karst fracture water plugging device further comprises an inner ring, and the inner ring is fixedly connected with the bottom support and is positioned above the bottom support.

5. The water plugging device for gushing karst fractures according to claim 4,

the gushing karst fracture water plugging device further comprises an outer ring, the outer ring is fixedly connected with the bottom support and is located above the bottom support, and the outer ring encloses the inner ring.

6. The water plugging device for gushing karst fractures according to claim 5,

the gushing karst fracture water plugging device further comprises a reinforcing rib, wherein two ends of the reinforcing rib are fixedly connected with the inner ring and the outer ring respectively and are located between the inner ring and the outer ring.

7. The water plugging device for gushing karst fractures according to claim 6,

the number of the reinforcing ribs is multiple, and the plurality of the reinforcing ribs are uniformly distributed between the inner ring and the outer ring.

8. The plugging method using the gushing karst fracture water plugging device according to claim 3, characterized by comprising the steps of:

building a three-dimensional geological model based on BIM;

designing a drainage system integrating two functions of dredging and dredging;

implementing the construction of a water collecting well and a blind pipe;

designing a water sealing and plugging device for the gushing karst fracture;

placing a plugging tool base into the water collecting well and pouring concrete to the position 200mm away from the bottom of the wing ring;

after the concrete on the bottom plate around the water collecting well is poured and initially set, before final setting, a water pump in the water collecting well is removed, and a cover plate is installed;

and after the cover plate is installed, binding the reinforcing steel bars of the bottom plate and pouring concrete.

9. The method for plugging gushing karst fracture water according to claim 8, wherein designing the gushing karst fracture water plugging device comprises:

designing specification and size of materials required by the gushing karst fissure water plugging device according to the size of a water collecting well arranged at the water gushing position on site, and drawing a model according to the size of the material by utilizing CAD software;

and cutting the material according to the designed model.

Technical Field

The invention relates to the technical field of building construction, in particular to a device and a method for plugging gushing karst fracture water.

Background

When the construction site has abundant underground water, the frequently adopted dewatering mode is mainly a well point dewatering method, and the well point dewatering method is generally suitable for homogeneous geology with good permeability such as sandy soil, silty clay and the like.

And karst landform geology is complicated, the development of underground joint fissure rock is irregular, the trend is inconsistent, karst fissure water mainly exists in deep anomalous karst crack in the form of diving, the impermeability of karst and the anomalous characteristic of karst crack lead to traditional precipitation method can not satisfy karst landform area on-the-spot precipitation demand, and because karst fissure water is mostly confined water, have highly compressed fissure water and can rush out the floor concrete that does not condense in carrying out basic floor concrete placement process, thereby lead to the quality problems that the bottom plate infiltration appears.

Disclosure of Invention

The invention aims to provide a gushing karst fracture water plugging device and a plugging method, which can be used for plugging and stopping the karst fracture water with the gushing characteristic and avoid the problem of water seepage when a foundation slab is subjected to concrete pouring.

In order to achieve the purpose, the gushing karst fracture water sealing device adopted by the invention comprises a plugging tool base and a cover plate, wherein the plugging tool base comprises a bottom support, a plurality of side walls and wing rings, each side wall is respectively and fixedly connected with the bottom support and is positioned above the side wall, the side walls are connected end to end, the wing rings are respectively and fixedly connected with the side walls and are positioned above the side walls, and the cover plate covers the wing rings.

The outer edge of the wing ring is provided with a plurality of first bolt holes, the cover plate is provided with a plurality of reserved bolt holes, and the axial center line of each reserved bolt hole and the axial center line of each first bolt hole are overlapped.

The gushing karst fracture water plugging device further comprises a rubber gasket, wherein the rubber gasket is fixedly connected with the cover plate, is positioned below the cover plate and is positioned between the cover plate and the wing ring.

The gushing karst fracture water plugging device further comprises an inner ring, and the inner ring is fixedly connected with the bottom support and is positioned above the bottom support.

The gushing karst fracture water plugging device further comprises an outer ring, the outer ring is fixedly connected with the bottom support and located above the bottom support, and the inner ring is enclosed by the outer ring.

The gushing karst fracture water plugging device further comprises a reinforcing rib, wherein two ends of the reinforcing rib are fixedly connected with the inner ring and the outer ring respectively and are located between the inner ring and the outer ring.

The number of the reinforcing ribs is multiple, and the plurality of the reinforcing ribs are uniformly distributed between the inner ring and the outer ring.

The invention also provides a plugging method adopting the gushing karst fracture water plugging device, which comprises the following steps:

building a three-dimensional geological model based on BIM;

designing a drainage system integrating two functions of dredging and dredging;

implementing the construction of a water collecting well and a blind pipe;

designing a water sealing and plugging device for the gushing karst fracture;

placing a plugging tool base into the water collecting well and pouring concrete to the position 200mm away from the bottom of the wing ring;

after the concrete on the bottom plate around the water collecting well is poured and initially set, before final setting, a water pump in the water collecting well is removed, and a cover plate is installed;

and after the cover plate is installed, binding the reinforcing steel bars of the bottom plate and pouring concrete.

Wherein, design gushing karst fracture water seal blocks up device includes:

designing specification and size of materials required by the gushing karst fissure water plugging device according to the size of a water collecting well arranged at the water gushing position on site, and drawing a model according to the size of the material by utilizing CAD software;

and cutting the material according to the designed model.

According to the gushing karst fracture water plugging device and the plugging method, the device is placed in a water collecting well at a water gushing position, then concrete is poured and plugged to the position 200mm above the bottom support, the bottom support plays a role in water stopping, the sealed side wall ensures that underground water cannot seep out, and then the cover plate and the wing ring are covered to further achieve the effect of plugging karst fracture water.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a structural exploded view of the gushing karst fracture water plugging device of the present invention.

Fig. 2 is a schematic structural diagram of the gushing karst fracture water plugging device.

Fig. 3 is a top view of the gushing karst fracture water plugging device of the present invention.

Fig. 4 is an installation diagram of the gushing karst fracture water plugging device of the invention.

Fig. 5 is a schematic structural view after the installation and construction of the gushing karst fracture water plugging device of the present invention are completed.

Fig. 6 is a partial structural schematic diagram of the gushing karst fracture water plugging device of the invention.

FIG. 7 is a flow chart of the steps of the water plugging method of the gushing karst fracture of the present invention.

1-plugging tool base, 11-bottom support, 12-side wall, 13-wing ring, 131-first bolt hole, 2-cover plate, 21-reserved bolt hole, 3-rubber gasket, 4-inner ring, 5-outer ring, 6-reinforcing rib, 7-connecting strip and 8-concave part.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 6, the present invention provides a water sealing device for gushing karst fractures, which includes a plugging tool base 1 and a cover plate 2, wherein the plugging tool base 1 includes a bottom support 11, a plurality of side walls 12 and wing rings 13, each of the side walls 12 is respectively and fixedly connected with the bottom support 11 and is located above the side wall 12, the side walls 12 are connected end to end, the wing rings 13 are respectively and fixedly connected with the side walls 12 and are located above the side walls 12, and the cover plate 2 covers the wing rings 13.

In the embodiment, the device is placed in a water collecting well at a water gushing position, then concrete is poured and plugged to the position 200mm above the bottom support 11, at the moment, the bottom support 11 plays a role in water stopping, the sealed side wall 12 ensures that underground water cannot seep out, then the cover plate 2 and the wing rings 13 are covered, the plugging effect of karst fissure water is achieved, the karst fissure water with the gushing characteristic can be plugged and stopped, and the problem that water seeps when the foundation slab is poured with concrete is avoided.

Further, the outer edge of the wing ring 13 is provided with a plurality of first bolt holes 131, the cover plate 2 is provided with a plurality of reserved bolt holes 21, and the axial center line of each reserved bolt hole 21 and the axial center line of the first bolt hole 131 coincide with each other.

In the present embodiment, the cover plate 2 and the wing ring 13 can be connected by sequentially passing bolts through the first bolt holes 131 and the reserved bolts, and screwing the bolts to the first bolt holes 131 and the reserved bolts, respectively.

Further, the gushing karst fracture water plugging device further comprises a rubber gasket 3, wherein the rubber gasket 3 is fixedly connected with the cover plate 2, is positioned below the cover plate 2, and is positioned between the cover plate 2 and the wing ring 13.

In the present embodiment, the rubber gasket 3 is provided to increase the sealing performance of the connection between the cover plate 2 and the wing ring 13.

Further, the gushing karst fracture water plugging device further comprises an inner ring 4, and the inner ring 4 is fixedly connected with the bottom support 11 and is positioned above the bottom support 11.

The gushing karst fissure water plugging device further comprises an outer ring 5, the outer ring 5 is fixedly connected with the bottom support 11 and is located above the bottom support 11, and the inner ring 4 is enclosed by the outer ring 5.

In the present embodiment, the inner ring 4 and the outer ring 5 are provided to increase the structural strength of the shoe 11.

Further, the gushing karst fracture water plugging device further comprises a reinforcing rib 6, wherein two ends of the reinforcing rib 6 are fixedly connected with the inner ring 4 and the outer ring 5 respectively and are located between the inner ring 4 and the outer ring 5.

The number of the reinforcing ribs 6 is multiple, and the plurality of reinforcing ribs 6 are uniformly distributed between the inner ring 4 and the outer ring 5.

In the present embodiment, the reinforcing ribs 6 are provided to increase the structural strength of the shoe 11. A plurality of the setting of strengthening rib 6 can effectively promote the structural strength of strengthening rib 6.

Further, a plurality of uniformly distributed concave parts 8 are arranged on the outer ring 5 and the inner ring 4.

The gushing karst fracture water plugging device further comprises a connecting strip 7, one end of the connecting strip 7 is fixedly connected with the inner ring 4, and the other end of the connecting strip 7 is fixedly connected with the side wall 12.

The number of the connecting strips 7 is multiple, and the connecting strips 7 are uniformly distributed.

In this embodiment, the arrangement of the recessed portion 8 can ensure that the structural strength of the base support 11 is increased by the outer ring 5 and the inner ring 4, and at the same time, the overall quality of the device for blocking the gushing karst fracture water is reduced. The arrangement of a plurality of connecting strips 7 can further improve the structural strength of the bottom support 11.

Referring to fig. 7, the invention further provides a plugging method using the gushing karst fracture water plugging device, which includes the following steps:

s1: building a three-dimensional geological model based on BIM;

s2: designing a drainage system integrating two functions of dredging and dredging;

s3: implementing the construction of a water collecting well and a blind pipe;

s4: designing a water sealing and plugging device for the gushing karst fracture;

s5: placing the plugging tool base 1 into a water collecting well and pouring concrete to the position 200mm away from the bottom of the wing ring 13;

s6: after the concrete on the bottom plate around the water collecting well is poured and initially set and before final setting, a water pump in the water collecting well is removed and a cover plate 2 is installed;

s7: and after the cover plate 2 is installed, binding the reinforcing steel bars of the bottom plate and pouring concrete.

Before foundation excavation, three-dimensional geological modeling is carried out according to a geological survey report by adopting a BIM technology, then the position, the direction of a karst cave and the position, the flow and the direction of a water inflow point are accurately determined, a blind pipe and a water collecting well are arranged according to the position, the flow and the direction of the water inflow point, the water collecting well is arranged at the position with larger water inflow amount, the blind pipe is adopted to uniformly drain the small water inflow amount of the water collecting well into the water collecting well for pumping and draining, meanwhile, the blind pipe is embedded in the water collecting well to the outside of a foundation to form a dredging two-in-one drainage system as a pressure relief pipe, when the foundation slab is constructed, after the foundation slab is concreted around the water collecting well, a water suction pump in the water collecting well is evacuated, a high-pressure gushing karst fissure water plugging device is adopted to plug the water collecting well, and finally reinforcing and concreting are carried out, so that the high-pressure gushing karst fissure water is controlled.

The BIM-based three-dimensional geological modeling specifically comprises the following steps: and based on the collected drilling single-hole hierarchical data, eliminating the stratum number of the stratum where the bad geological body is located, establishing a relatively complete three-dimensional geological model, then independently establishing the three-dimensional geological model of the eliminated bad geological body data, and inserting the established bad geological body three-dimensional geological model into the established three-dimensional geological model to obtain the three-dimensional geological model containing the bad geological body. The method is favorable for accurately determining the position, the crack trend, the position, the flow and the trend of the water burst point of the modeling geological solution cavern, and reduces the construction risk.

Wherein, design collection and sparse two-in-one formula drainage system specifically is:

drainage is carried out on a water inflow point with smaller water inflow amount in the foundation to a water inflow point with larger water inflow amount to form a collection point by adopting a mode of embedding a secondary blind pipe, a water collecting well is arranged at the collection point for pumping drainage, and a drainage main blind pipe is embedded in the water collecting well to the outside of the foundation for drainage and pressure relief to form a drainage-integration two-in-one drainage system;

when foundation excavation is carried out on each construction section according to division of the construction sections, BIM geological modeling is combined according to actual conditions on site, the position, the number and the water inflow amount of water inflow points of each construction section are determined, the trend path and the elevation of the drainage tube are determined, the drainage path from the secondary blind pipe to the water collecting well and finally to the main blind ditch is determined, and the position convenient for drainage is arranged for ensuring the precipitation effect and constructing the water outlet of the main blind pipe conveniently.

Wherein, implement sump pit and blind pipe construction, specifically do:

the excavation depth of the water collecting well is 1.5 m greater than the excavation elevation of a foundation design, a prefabricated cement pipe with the diameter of 1000 is used as the water collecting well, a PVC-U pipe is used as a secondary blind pipe with the diameter of 100, a main blind pipe with the diameter of 300 is used, the embedding elevation of the blind pipe is 50cm lower than the excavation elevation of the foundation design, in order to guarantee the maximum water flow speed, the height difference of two ends of the blind pipe is greater than 200mm, sand is covered on the periphery of the blind pipe and is not less than 200mm in thickness, and a water suction pump is placed to pump and drain underground water after the water collecting well is installed.

Wherein, design gushing karst fracture water seal blocks up device includes:

designing specification and size of materials required by the gushing karst fissure water plugging device according to the size of a water collecting well arranged at the water gushing position on site, and drawing a model according to the size of the material by utilizing CAD software;

cutting materials according to a designed model, wherein the base and the cover plate 2 are made of steel plates with the thickness of 5mm, and the rubber gasket 3 is made of rubber with the thickness of 10 mm;

welding and assembling the cut steel plates into the base according to a model, and bonding the rubber gasket 3 and the cover plate 2 together by using weather-resistant glue;

then, the plugging tool base 1 is installed, firstly, phi 15 expansion screws are driven into the inner side wall 12 of the water collecting well to serve as supporting points of the plugging tool base 1, and the arrangement positions of the expansion screws need to ensure that the top elevation of the plugging tool base 1 is lower than the cushion layer elevation; then, the plugging tool base 1 is placed in a water collecting well, gaps between the side walls 12 of the plugging pieces and the side walls 12 of the water collecting well are filled with C30P6 concrete, and the elevation of the poured concrete surface is 200mm lower than that of the plugging pieces;

and then installing a cover plate 2, specifically: after concrete pouring of a bottom plate around the water collecting well is finished, before initial setting of the concrete, a water suction pump in the water collecting well is removed, the cover plate 2 is rapidly installed to the upper portion of the plugging tool base 1 through the phi 20 bolts, in order to prevent water burst from seeping, the cover plate 2 is rapidly installed, and the bolts around the cover plate 2 need to be screwed down in place until no underground water seeps out of the lower portion of the cover plate 2.

Then, pouring concrete on the upper part of the cover plate 2, specifically:

the bearing capacity of the foundation is reduced after the sump pit is excavated, the bearing capacity of the foundation needs to be reinforced according to construction design, otherwise, the structure safety is influenced, and the reinforcement, the concrete grade and the plate thickness of the reinforcing plate are determined by calculation of a design unit. In order to ensure that the bottom plate concrete pouring at the position of the water collecting well can be integrated with the bottom plate without the occurrence of construction cold joints, the construction is carried out before initial setting after the bottom plate concrete pouring at the periphery of the water collecting well is finished.

In conclusion, the tool for plugging the high-pressure gushing karst fracture water has the following advantages after construction: the problem that the traditional precipitation method is difficult to precipitate because the water distribution of the karst fractures is irregular and the trend is inconsistent is effectively solved; the effective karst fissure water of having prevented the high pressure gushing very easily leads to the quality problem that the bottom plate concrete placement appears the infiltration.

The design of gushing karst crack water blocking device can block and stop water for karst crack water with gushing characteristics, and avoids the problem of water seepage when concrete pouring is carried out on the foundation slab.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.