CN212223764U

CN212223764U - Dam prevention of seepage structure for hydraulic engineering

Info

Publication number: CN212223764U
Application number: CN202021373601.4U
Authority: CN
Inventors: 薛忠强; 吴翠萍; 曾庆峰; 杨帆
Original assignee: Shenzhen Dongshen Engineering Co ltd
Current assignee: Shenzhen Dongshen Engineering Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2020-12-25
Anticipated expiration: 2030-07-13

Abstract

The utility model relates to a dam anti-seepage structure for hydraulic engineering, which comprises a dam body, wherein a placing groove is arranged on the upper surface of the dam body near one end of a reservoir, the length of the placing groove is greater than or equal to that of the dam body, and the depth of the placing groove is greater than or equal to the vertical length of the dam body; the vertical waterproof board that is provided with in the standing groove, the waterproof board lower extreme extends to the standing groove tank bottom, and the waterproof board upper end extends to the standing groove notch, and the waterproof board is arranged in blocking the water in the reservoir and permeates the dam body completely. The utility model has the characteristics of can promote the prevention of seepage of dam body completely and pass through the effect, do not need to repair and the less of construction work volume many times.

Description

Dam prevention of seepage structure for hydraulic engineering

Technical Field

The utility model belongs to the technical field of the technique that the dam prevention of seepage passed through and specifically relates to a dam prevention of seepage passes through structure for hydraulic engineering is related to.

Background

The dam body is used as a main hydraulic building for reservoir operation and flood control, after long-time operation and use, the phenomena of seepage and weathering prevention and dam body leakage can be caused, the water storage function and benefit are directly reduced, hidden danger is brought to engineering, integrity of the dam body of the reservoir is affected, and therefore the dam body needs to be overhauled after being used for a period of time, and the seepage prevention effect of the dam body is enhanced again.

When the seepage condition is slight, the commonly adopted method for enhancing seepage prevention is cone-probe grouting or split grouting to repair the dam body, and when the seepage condition is serious, the dam body needs to be rebuilt or thickened on the basis of the original foundation body, so that the seepage effect is weakened.

The above prior art solutions have the following drawbacks: the seepage-proofing effect of the dam body is improved by adopting a cone-probe grouting or split grouting mode on the dam body, although the seepage-proofing effect of the dam body is enhanced to a certain degree, the two modes only strengthen the local position of the dam body, the seepage phenomenon is easy to occur after a long time at the position where the two measures are not taken, the position where the seepage occurs needs to be repaired at the moment, so that the dam body is required to be repaired many times before and after, and the condition of omission easily exists during maintenance, so that potential safety hazards easily exist in the dam body, in addition, the dam body is heavily built or thickened, the construction quantity is large, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a dam prevention of seepage structure for hydraulic engineering, its prevention of seepage that has the dam body can be promoted comprehensively passes through the effect, does not need to repair and the less characteristics of construction work volume many times.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a dam anti-seepage structure for hydraulic engineering comprises a dam body, wherein a placing groove is arranged at one end, close to a reservoir, of the upper surface of the dam body, the length of the placing groove is larger than or equal to that of the dam body, and the depth of the placing groove is larger than or equal to the vertical length of the dam body; the vertical waterproof board that is provided with in the standing groove, the waterproof board lower extreme extends to the standing groove tank bottom, and the waterproof board upper end extends to the standing groove notch, and the waterproof board is arranged in blocking the water in the reservoir and permeates the dam body completely.

By adopting the technical scheme, the arrangement of the placing groove provides a stable mounting position for the waterproof board to be mounted and enter the interior of the dam body, and because the length of the placing groove is equal to that of the dam body and the depth of the placing groove is equal to that of the dam body, when the waterproof board is in the placing groove, the waterproof board can play a role of blocking water in a reservoir from completely permeating the dam body, and the dam body is not completely permeated, so that the situation that the dam body is completely collapsed is not easy to occur, and meanwhile, the situation that the service time of the dam body is long and the water in the reservoir permeates the dam body is not easy to exist; and because the standing groove is in dam upper surface and is close to reservoir one end department for even the dam body takes place the infiltration phenomenon, the dam body also can only be permeated a small part, the most of dam body then can not be permeated by the water in the reservoir, so the holistic structural strength of dam body is difficult for reducing too much, the firm safety that also is more of nature dam body, compare in the prevention of seepage mode that has adopted now, this kind of mode need not repair the dam body many times, the engineering volume of construction is also smaller, and the prevention of seepage effect of dam body has been promoted comprehensively.

The utility model discloses can further configure to in a preferred example, still vertically in the standing groove be provided with many support columns that are parallel to each other, support column and side surface with reservoir side surface butt is kept away from to the waterproof board.

Through adopting above-mentioned technical scheme, the setting of support column has supported the waterproof board for the waterproof board is difficult for taking place deformation or the change in the position, helps the waterproof board to exert better effect of blocking water.

The utility model can be further configured in a preferred example that a plurality of conical shells are uniformly arranged on the surface of the waterproof board close to one side of the reservoir, and one end of each conical shell far away from the waterproof board is inserted into the side wall of the placing groove; be provided with a plurality of injected holes on the lateral wall of conical shell to conical shell inside and waterproof board keep away from conical shell one side surface intercommunication.

By adopting the technical scheme, the arrangement of the conical shell enables the waterproof board to be connected with the side wall of the placing groove, and the waterproof board is more stably and firmly connected with the side wall of the placing groove; the setting of slip casting hole, then constructor can pour into grout into to the conical shell, and along with the injection of grout, grout can follow the slip casting hole and jet out, enter into the inside of dam body, treat the grout solidification back, not only conical shell is connected with the dam body more firmly, makes the structural strength of dam body obtain the enhancement, even in having water infiltration dam body in the reservoir, the difficult condition that water passes the waterproof board from the slip casting hole department that appears moreover, avoids producing the influence to the water blocking performance of waterproof board.

The utility model discloses can further configure to in a preferred example, the waterproof board is provided with two, two waterproof boards all with support column fixed connection to the support column is in between two waterproof boards.

Through adopting above-mentioned technical scheme, the waterproof board sets up two, has further promoted the effect that blocks water of waterproof board for water in the reservoir is difficult for more oozing the dam body completely.

The utility model discloses can further configure to in a preferred example, two be provided with the filling layer in the clearance between the waterproof board.

Through adopting above-mentioned technical scheme, the setting of filling layer has filled the clearance between two waterproof boards for the structural strength of this department obtains great promotion, has also promoted the structural strength of whole dam body simultaneously.

The utility model discloses can further configure into, two in a preferred example keep away from one of reservoir in the waterproof board and be the slope setting to this waterproof board upper end is compared and is close to the reservoir more in the lower extreme of self.

By adopting the technical scheme, the gravity center of the structure at the position is lower, the stability of the dam body is facilitated, the gravity center of the dam body is not easy to be lifted, the dam body is firmer and firmer, and the water blocking capacity is stronger.

The utility model discloses can further configure into, two in a preferred example still the fixed link that is provided with between the waterproof board, in order to with two the waterproof board is connected.

Through adopting above-mentioned technical scheme, the setting of link has connected two waterproof boards together for this structure of locating forms a whole, when the waterproof board atress, helps dispersing the effort, makes the waterproof board be difficult for receiving the damage, and then helps the waterproof board to keep good water blocking performance.

The utility model discloses can further configure to in a preferred example, the tank bottom portion of placing still is provided with the cement mound, and inside the cement mound lower extreme inserted the tank bottom of placing, the upper end extended to the link inside.

Through adopting above-mentioned technical scheme, the setting of cement mound has then been connected link and standing groove tank bottom, when the link received the effort of horizontal direction, helps self to disperse the effort to the standing groove bottom.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the arrangement of the waterproof board ensures that water in the reservoir cannot completely permeate the dam body, the structural strength of the dam body is guaranteed at the moment, the dam body is not easily influenced by water in the reservoir, the dam body does not need to be repeatedly maintained after the structure is arranged, most of the main structure of the dam body is not influenced by the permeation effect of the water in the reservoir, and meanwhile, the waterproof board is placed in the dam body only by digging out the placing groove and then backfilling the dam body, so that the construction amount is small;

2. the arrangement of the conical shell enables the waterproof board to be connected with the side wall of the placing groove, and the connection between the waterproof board and the side wall of the placing groove is more stable and firm; the setting of slip casting hole, then constructor can pour into grout into to the conical shell, and along with the injection of grout, grout can follow the slip casting hole and jet out, enter into the inside of dam body, treat the grout solidification back, not only conical shell is connected with the dam body more firmly, makes the structural strength of dam body obtain the enhancement, even in having water infiltration dam body in the reservoir, the difficult condition that water passes the waterproof board from the slip casting hole department that appears moreover, avoids producing the influence to the water blocking performance of waterproof board.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a dam body; 11. a placement groove; 2. a waterproof sheet; 3. a support pillar; 4. a conical shell; 41. grouting holes; 5. a connecting frame; 6. a filling layer; 7. cement pier; 8. a reservoir.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, and it should be noted that the seepage prevention of the present invention is made for the seepage of the water in the reservoir to the dam body.

Referring to fig. 1 and 2, for the utility model discloses a dam prevention of seepage structure for hydraulic engineering, it can prevent effectively that water in the reservoir 8 from permeating the dam body 1 completely, make the prevention of seepage effect of dam body 1 strengthened, this structure includes dam body 1, dam body 1 upper surface is close to reservoir 8 one end department and has seted up standing groove 11, the length of standing groove 11 is greater than or equal to the length of dam body 1, the degree of depth of standing groove 11 is greater than or equal to dam body 1 vertical length, in this embodiment, the length of standing groove 11 equals the length of dam body 1, the degree of depth of standing groove 11 equals dam body 1 vertical length; the waterproof plate 2 is vertically arranged in the placing groove 11, the lower end of the waterproof plate 2 extends to the bottom of the placing groove 11, the upper end of the waterproof plate 2 extends to the notch of the placing groove 11, and the waterproof plate 2 is used for blocking water in the reservoir 8 from completely permeating the dam body 1; through this kind of design, make the difficult condition that appears totally permeating dam 1 of water in the reservoir 8, and because standing groove 11 is in dam 1 upper surface and is close to reservoir 8 one end, make the position of waterproof board 2 be close reservoir 8 more, even the water infiltration in the reservoir 8 goes into dam 1 this moment, also can only permeate and get into in a small part dam 1, and dam 1 most can not receive the influence of the water in the reservoir 8, thereby make dam 1 structure comparatively firm, the prevention of seepage effect of natural dam 1 is also strengthened.

Referring to fig. 1 and 2, in the present embodiment, the waterproof plate 2 is a stainless steel plate, and the waterproof plate 2 is formed by welding a plurality of flat plate-shaped plates, so that the waterproof plate 2 can be more conveniently transported and installed.

Referring to fig. 1 and 2, in order to improve the structural strength of the place, a plurality of parallel support columns 3 are also vertically arranged in the placing groove 11, the support columns 3 are cylindrical and made of stainless steel, two adjacent support columns 3 are spaced at the same distance, and the side surfaces of the support columns 3 are welded with the surface of one side, away from the reservoir 8, of the waterproof plate 2 which is vertically arranged; the structural strength of the waterproof board 2 vertically arranged at the moment is strengthened, so that the whole structural strength of the part is strengthened, and the dam body 1 is more firm and stable.

Referring to fig. 1 and 2, in order to further improve the connection strength between the waterproof board 2 in a vertical state and the dam 1, a plurality of conical shells 4 are uniformly welded on the surface of one side, close to the reservoir 8, of the waterproof board 2, the conical shells 4 are conical and made of stainless steel, the conical shells 4 are hollow, and one ends, far away from the waterproof board 2, of the conical shells 4 are inserted into the side wall of the placing groove 11 in a sharp shape; a plurality of grouting holes 41 are further formed in the side wall of the conical shell 4, and the interior of the conical shell 4 is communicated with the surface of one side, far away from the conical shell 4, of the waterproof plate 2; after this waterproof board 2 has been installed, conical shell 4 is in the lateral wall of standing groove 11, inject grout into conical shell 4 from the surface department that this waterproof board 2 keeps away from conical shell 4 one side this moment, grout can not enter into conical shell 4, still can follow grouting hole 41 to the inside infiltration of dam body 1, treat that grout solidifies the back, this waterproof board 2 has just obtained very big reinforcing with the joint strength of dam body 1, the structural strength of dam body 1 itself is also because the infiltration of grout simultaneously, and obtain promoting greatly.

Referring to fig. 1 and 2, in this embodiment, in order to further improve the anti-seepage effect, the waterproof board 2 is provided with two blocks, one is in a vertical state and is positioned at a side close to the reservoir 8, and the other is in an inclined state and is positioned at a side far away from the reservoir 8, and the upper end of the waterproof board 2 is closer to the reservoir 8 than the lower end of the waterproof board itself; the two waterproof plates 2 are fixedly connected with the support column 3, and the support column 3 is positioned between the two waterproof plates 2; the setting of two waterproof boards 2 for the prevention of seepage effect of dam body 1 obtains great reinforcing, is the tilt state setting because a waterproof board 2 of keeping away from reservoir 8 moreover, makes this structure be difficult for rising the focus of dam body 1, helps the stability of dam body 1.

Referring to fig. 1 and 2, in order to couple together the waterproof board 2 that is the tilt state with support column 3, make two waterproof boards 2 and support column 3 connect into a whole, it is provided with link 5 still to fix between two waterproof boards 2, link 5 includes many square poles that are the cuboid shape, the square pole level sets up, square pole one end and support column 3 welding, the square pole other end with the waterproof board 2 welding that is the tilt state, pass through link 5 and support column 3 this moment, just connect into a whole with two waterproof boards 2, and because the waterproof board 2 that is vertical state connects into a whole with dam body 1, so two waterproof boards 2, support column 3 and link 5 all connect into a whole with dam body 1, the structural strength of dam body 1 has been promoted greatly.

Referring to fig. 1 and 2, a filling layer 6 is further arranged in the gap between the two waterproof boards 2, the filling layer 6 comprises sand and soil dug out when the placing groove 11 is dug, the sand and the sand are mixed in the soil, and the gap between the two waterproof boards 2 is filled by the filling layer 6, so that the structure is more compact, and the conduction and the dispersion of the acting force of the dam body 1 are facilitated.

Referring to fig. 1 and 2, in order to further promote the stability of each part in the standing groove 11, still be provided with cement mound 7 in standing groove 11 bottom, cement mound 7 is reinforced concrete structure, cement mound 7 is the cuboid shape, inside at the bottom of the standing groove 11 is inserted to cement mound 7 lower extreme, the upper end extends to between the adjacent two square poles in the link 5, and cement mound 7's upper end week side surface and bracing piece lower extreme axle side surface butt, when making the waterproof board 2 receive the effort of horizontal direction, can guide the effort to the underground through support column 3 and cement mound 7, the stability of dam body 1 has been promoted.

An anti-seepage method for a dam for hydraulic engineering comprises the following steps:

s1, arranging a placing groove 11 on one end, close to the horizontal direction, of the upper surface of a dam body 1 by using an excavator, wherein before the digging, water stored in a reservoir 8 needs to be discharged firstly, or the digging is carried out in a dry season, and the placing groove 11 needs to avoid a water outlet of the dam body 1, namely the placing groove 11 is not communicated with the water outlet;

s2, after the placing groove 11 is dug, the groove bottom of the placing groove 11 needs to be tamped, then a waterproof board 2 is placed in the position, close to one side of the reservoir 8, of the placing groove 11, the waterproof board 2 is placed in a vertical state, the surface, close to one side of the reservoir 8, of the waterproof board 2 is abutted to the side wall, close to one side of the reservoir 8, of the placing groove 11, the conical shell 4 is inserted into the side wall of the placing groove 11, then the supporting column 3 is inserted into the placing groove 11, the lower end of the supporting column 3 is inserted into the groove bottom of the placing groove 11, and meanwhile the waterproof board 2 in the vertical state is welded with the supporting column 3;

s21, after the support column 3 is installed, injecting cement paste into the conical shell 4 by using a grouting machine, and filling the conical shell 4 with the cement paste;

s3, after the cement paste is solidified, digging out a square pit for placing the cement pier 7 at the bottom of the placing groove 11, then placing the pre-formed cement pier 7 in the square pit, enabling the lower end of the cement pier 7 to be located in the square pit and the upper end of the cement pier to be located in the placing groove 11, then horizontally welding the connecting frame 5 on the supporting column 3, and welding one end of a square rod in the connecting frame 5 with the supporting column 3;

s4, after the connecting frame 5 is installed, placing the other waterproof plate 2 into the placing groove 11 in an inclined mode, and welding the waterproof plate 2 and one end, far away from the supporting rod, of the square rod;

s5, filling the gap between the two waterproof boards 2 by using the filling layer 6, wherein the upper end face of the filling layer 6 is flush with the upper end face of the dam body 1, and the filling layer 6 needs to be tamped;

s6, after the filling layer 6 is arranged, soil is used for filling the space on the upper surface of the inclined waterproof board 2, so that the placing groove 11 is filled, and similarly, the soil on the upper surface of the inclined waterproof board 2 needs to be tamped.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The dam seepage-proofing structure for the hydraulic engineering comprises a dam body (1) and is characterized in that a placing groove (11) is formed in one end, close to a reservoir (8), of the upper surface of the dam body (1), the length of the placing groove (11) is larger than or equal to that of the dam body (1), and the depth of the placing groove (11) is larger than or equal to the vertical length of the dam body (1); the dam is characterized in that waterproof boards (2) are vertically arranged in the placing grooves (11), the lower ends of the waterproof boards (2) extend to the bottoms of the placing grooves (11), the upper ends of the waterproof boards (2) extend to the notches of the placing grooves (11), and the waterproof boards (2) are used for blocking water in the reservoir (8) from completely permeating the dam body (1).

2. The dam anti-seepage structure for the water conservancy project according to claim 1, characterized in that a plurality of supporting columns (3) which are parallel to each other are vertically arranged in the placing groove (11), and the supporting columns (3) are abutted against the side surfaces of the waterproof plates (2) far away from the reservoir (8).

3. The dam anti-seepage structure for the water conservancy project according to claim 1, characterized in that a plurality of conical shells (4) are uniformly arranged on the surface of one side of the waterproof board (2) close to the reservoir (8), and one ends of the conical shells (4) far away from the waterproof board (2) are inserted into the side wall of the placing groove (11); a plurality of grouting holes (41) are formed in the side wall of the conical shell (4), and the interior of the conical shell (4) is communicated with the surface of one side, far away from the conical shell (4), of the waterproof plate (2).

4. The dam anti-seepage structure for hydraulic engineering according to claim 2, characterized in that the waterproof plates (2) are provided in two pieces, both the waterproof plates (2) are fixedly connected with the supporting column (3), and the supporting column (3) is located between the two waterproof plates (2).

5. Dam impermeable structure according to claim 4, characterised in that a filling layer (6) is arranged in the gap between the two waterproof boards (2).

6. Dam impermeable structure according to claim 4, characterised in that one of the two said flashing plates (2) remote from the reservoir (8) is inclined and the upper end of the flashing plate (2) is closer to the reservoir (8) than the lower end of the flashing plate itself.

7. The dam anti-seepage structure for the water conservancy project according to claim 6, characterized in that a connecting frame (5) is further fixedly arranged between the two waterproof boards (2) so as to connect the two waterproof boards (2).

8. The dam anti-seepage structure for the hydraulic engineering is characterized in that cement piers (7) are further arranged at the bottom of the placing groove (11), the lower ends of the cement piers (7) are inserted into the bottom of the placing groove (11), and the upper ends of the cement piers extend into the connecting frame (5).