Dam pump house roof waterproof structure

Abstract

The present invention discloses a waterproof structure for the roof of a dam pump house, belonging to the technical field of water conservancy and hydropower. The present invention provides a waterproof structure for the roof of a dam pump house that can improve the waterproof effect of the pump house roof; it includes a dam body and a pump house located on the downstream side of the dam body, and the pump house includes a pump house foundation and a pump house roof; a cantilever cover protruding outward in the downstream direction is provided above the joint part of the pump house roof on the downstream side wall of the dam body, a joint is formed between the bottom surface of the cantilever cover and the upper surface of the pump house roof, a copper water stop is provided at the joint, an anti-seepage material layer is laid on the pump house roof, the anti-seepage material layer is arranged on one side in the downstream direction of the copper water stop, and the anti-seepage material layer is connected to the bottom surface of the cantilever cover along the copper water stop upward after passing through the joint near the copper water stop. By setting the cantilever cover and the copper water stop structure, the waterproof effect of the pump house roof can be significantly improved in the present invention.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy and hydropower, and particularly to a waterproof structure for the roof of a dam pump house. Background Art

[0002] The dam sump is the gathering place for seepage water from the dam and the foundation. The water collected in the sump is pumped out to the back of the dam through the installed water pumps. The pump house is a building structure arranged on the cantilever structure at the back of the dam specifically for placing the water pumps, and its main function is to place the pumps. The foundation of the pump house is generally cast together with the dam body as a corbel of the dam body, but the upper structure of the pump house is a concrete frame structure constructed later. Therefore, there will be a construction joint between the pump house structure and the dam body. An arch dam belongs to a large-volume concrete structure. Generally, surface holes, deep holes or bottom holes are arranged on the dam body for reservoir water flood discharge. The pump house is generally arranged in the middle of the river along with the sump, and its position is basically below the orifice of the dam body. The water mist generated by the flood discharge of the dam body has a rainfall intensity stronger than that of a rainstorm. Usually, a large number of electrical equipment are arranged in the pump house. Therefore, the waterproofing of the pump house roof is an important consideration in the design of the pump house.

[0003] Currently, the commonly adopted waterproof measures for the pump house roof are to set a very thin covering on the upper part of the joint between the pump house and the dam body, with a thickness of generally several centimeters, similar to the function of an eaves. At the same time, waterproof materials are applied to the joint for seepage prevention; at the same time, a 2% slope is adopted on the roof surface to accelerate the drainage of roof water. However, due to the large difference in concrete materials at the joint, usually the concrete grade of the dam body is higher, while the concrete grade of the roof is lower. Therefore, uneven thermal expansion and contraction will cause the construction joint at the joint to open, and the vibration of the dam body during the flood discharge of the dam will increase the opening of the construction joint. The rainproof covering has a certain effect on vertical rainfall, but it has almost no protective effect on the water accumulation formed on the roof due to excessive rainfall intensity. The accumulated water will seep in from the opened construction joint, affecting the normal use of the pump house. At the same time, the eaves structure has a small and thin size, and on-site protection is often ignored or not in place, and the eaves structure is often damaged, resulting in a further reduction in its waterproof effect. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide a waterproof structure for the roof of a dam pump house that can improve the waterproof effect of the pump house roof.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a waterproof structure for the roof of a dam pump house, including a dam body and a pump house located on the downstream side of the dam body. The pump house includes a pump house foundation and a pump house roof. The pump house foundation is integrally cast with the dam body, and the pump house roof is connected to the downstream side wall of the dam body. A corbel cover protruding outward in the downstream direction is provided above the connection part of the pump house roof on the downstream side wall of the dam body, and the corbel cover is integrally cast with the dam body. A joint is formed between the bottom surface of the corbel cover and the upper surface of the pump house roof. A copper water stop is provided at the joint. The upper end of the copper water stop extends into the corbel cover, and the lower end of the copper water stop extends into the pump house roof. An anti-seepage material layer is laid on the pump house roof, and the anti-seepage material layer is arranged on one side in the downstream direction of the copper water stop. The anti-seepage material layer is connected to the bottom surface of the corbel cover along the copper water stop upward after passing through the joint near the copper water stop.

[0006] Furthermore: The upper end of the copper water stop is welded and connected to the steel bars in the corbel cover.

[0007] Furthermore: The lower end of the copper water stop is welded and connected to the steel bars in the pump house roof.

[0008] Furthermore: The anti-seepage material layer is adhesively connected to the copper water stop.

[0009] Furthermore: The corbel cover includes a top slope surface, a downstream side surface, and a bottom surface. The top slope surface is an inclined surface inclined downward in the downstream direction, the downstream side surface is a vertical surface, and the bottom surface is a horizontal surface.

[0010] Furthermore: The top surface of the pump house roof is an inclined surface inclined downward in the downstream direction, and the inclination angle is 5°.

[0011] Furthermore: A retaining wall is provided at the downstream edge of the pump house roof, and a drain hole is provided at the root of the retaining wall.

[0012] The beneficial effects of the present invention are: By setting the corbel cover and the copper water stop structure, the present invention can effectively prevent water seepage at the joint formed between the bottom surface of the corbel cover and the upper surface of the pump house roof and at the joint between the pump house roof and the dam body, and thus can significantly improve the waterproof effect of the pump house roof. In addition, by setting the anti-seepage material layer and increasing the inclination angle of the top surface of the pump house roof, the anti-seepage and drainage effects can be further improved. And by setting the retaining wall, it can prevent the roof from being too slippery due to too large a slope, resulting in maintenance personnel slipping out of the roof and falling and getting injured. At the same time, the copper water stop has a certain degree of elasticity, which can ensure its integrity when the vibration joint of the dam opens. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a layout schematic diagram of the dam body and the pump house on the downstream side;

[0014] Figure 2 ForFigure 1 An enlarged schematic view of the local area A in the middle;

[0015] Figure 3 It is a large-scale drawing of the copper water stop;

[0016] The markings in the figure are: dam body 1, pump house 2, pump house foundation 3, pump house roof 4, bracket cover 5, copper water stop 6, anti-seepage material layer 7, top slope surface 51, downstream side surface 52, bottom surface 53, retaining wall 8, drainage hole 9. Specific implementation manners

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0018] It should be noted that if there are directional indication terms involved in the present invention, such as the direction and orientation terms of up, down, left, right, front, and back, they are for facilitating the description of the relative position relationship between components, rather than specifically referring to the absolute position of relevant components and the position relationship between components. They are only used to explain the relative position relationship and movement conditions between components in a specific posture. If this specific posture changes, then the directional indication also changes accordingly. If there are quantity terms involved in the present invention, such as "many", "multiple", "several", etc., it specifically refers to two or more.

[0019] The waterproof structure of the pump house roof of the dam described in the present invention includes a dam body 1 and a pump house 2 located on the downstream side of the dam body 1. The pump house 2 includes a pump house foundation 3 and a pump house roof 4. Among them, the pump house foundation 3 is integrally cast with the dam body 1, and the pump house roof 4 is connected to the downstream side wall of the dam body 1. Further, in the present invention, a bracket cover 5 protruding outward in the downstream direction is provided above the connection part of the pump house roof 4 on the downstream side wall of the dam body 1, and the bracket cover 5 is integrally cast with the dam body 1. A joint is formed between the bottom surface 53 of the bracket cover 5 and the upper surface of the pump house roof 4. A copper water stop 6 is provided at the joint. The upper end of the copper water stop 6 extends into the bracket cover 5, and the lower end of the copper water stop 6 extends into the pump house roof 4. An anti-seepage material layer 7 is laid on the pump house roof 4. The anti-seepage material layer 7 is arranged on one side in the downstream direction of the copper water stop 6. The anti-seepage material layer 7 is connected to the bottom surface 53 of the bracket cover 5 along the copper water stop 6 upward after passing through the joint near the copper water stop 6.

[0020] In the present invention, the structure of the corbel cover 5 is set to form a function similar to that of an eave. At the same time, the corbel cover 5 is integrally cast with the dam body 1, which can ensure its structural strength, is convenient for construction, and there is no construction joint between the corbel cover 5 and the concrete of the dam body 1. Therefore, seepage at the joint surface can be further eliminated. At the same time, in the present invention, a copper waterstop 6 structure is further set to achieve a sealing and waterstop effect at the joint between the corbel cover 5 and the pump house roof 4, which can further ensure the waterproof effect of the joint. And the combination of the copper waterstop 6 and the anti-seepage material layer 7 realizes a more effective anti-seepage effect at the joint part.

[0021] More specifically, to further improve the sealing effect of the copper waterstop 6, the upper end of the copper waterstop 6 can be welded to the steel bars inside the corbel cover 5. Similarly, the lower end of the copper waterstop 6 can also be welded to the steel bars inside the pump house roof 4. In this way, by setting the rigid connection method of the copper waterstop 6, the connection strength and the sealing and waterproof performance are further improved.

[0022] More specifically, the selected copper waterstop 6 has a certain ability to adapt to tensile deformation. When the dam body discharges flood and causes the dam body to vibrate, and then the joint opens, the copper waterstop 6 can ensure that it is not damaged by pulling and loses the waterproof effect.

[0023] More specifically, the anti-seepage material layer 7 can adopt ordinary waterproof materials, such as modified asphalt roll waterproof materials. And, in the present invention, the anti-seepage material layer 7 can be further set to be adhesively connected to the copper waterstop 6; in this way, it can ensure convenient repair and connection after the later roof waterproof measures are damaged.

[0024] More specifically, referring to the attachment Figure 2 As shown in the figure, in the present invention, the corbel cover 5 can be further set to include a top slope surface 51, a downstream side surface 52, and a bottom surface 53. Among them, the top slope surface 51 is an inclined surface that slopes downward in the downstream direction, the downstream side surface 52 is a vertical surface, and the bottom surface 53 is a horizontal surface. The advantages of such a setting are as follows: on the one hand, by setting the cross-section of the corbel cover 5 to be trapezoidal, the structural strength of the corbel cover 5 can be improved; on the other hand, by setting the top slope surface 51, the drainage effect can be improved.

[0025] More specifically, to further improve the drainage effect of the top surface of the pump house roof 4, in the present invention, the inclination angle of the top surface of the pump house roof 4 is increased, and the inclination angle is set to 5°.

[0026] More specifically, in the case of increasing the inclination angle of the top surface of the pump house roof 4 as described above, in the present invention, a retaining wall 8 is further provided at the downstream edge of the pump house roof 4, and a drain hole 9 is provided at the root of the retaining wall 8. In this way, by setting the retaining wall 8, it can prevent the roof slope from being too large and slippery, resulting in maintenance personnel slipping out of the roof and falling and getting injured; and by setting the drain hole 9, it can prevent water from accumulating on the roof.

Claims

1. Waterproof structure for the roof of the pump house of the dam, comprising a dam body (1) and a pump house (2) located on the downstream side of the dam body (1). The pump house (2) includes a pump house foundation (3) and a pump house roof (4). The pump house foundation (3) is integrally cast with the dam body (1), and the pump house roof (4) is connected to the downstream side wall of the dam body (1). It is characterized in that: On the downstream side wall of the dam body (1), above the joint part with the pump house roof (4), there is a corbel cover (5) protruding outward in the downstream direction, and the corbel cover (5) is integrally cast with the dam body (1). A joint is formed between the bottom surface (53) of the corbel cover (5) and the upper surface of the pump house roof (4). A copper water stop (6) is provided at the joint. The upper end of the copper water stop (6) extends into the corbel cover (5), and the lower end of the copper water stop (6) extends into the pump house roof (4). An anti-seepage material layer (7) is laid on the pump house roof (4). The anti-seepage material layer (7) is arranged on one side in the downstream direction of the copper water stop (6). The anti-seepage material layer (7) is connected to the bottom surface (53) of the corbel cover (5) after passing upward along the copper water stop (6) through the joint near the copper water stop (6).

2. The waterproof structure of the dam pump house roof according to claim 1, characterized in that: The upper end of the copper water stop (6) is welded to the steel bars in the corbel cover (5).

3. The waterproof structure of the dam pump house roof according to claim 1, characterized in that: The lower end of the copper water stop (6) is welded to the steel bars in the pump house roof (4).

4. The waterproof structure of the dam pump house roof according to claim 1, characterized in that: The anti-seepage material layer (7) is adhesively connected to the copper water stop (6).

5. The waterproof structure of the dam pump house roof according to claim 1, characterized in that: The corbel cover (5) includes a top slope surface (51), a downstream side surface (52), and a bottom surface (53). The top slope surface (51) is an inclined surface sloping downward in the downstream direction, the downstream side surface (52) is a vertical surface, and the bottom surface (53) is a horizontal surface.

6. The waterproof structure of the roof of the dam pump house according to any one of claims 1 to 5, characterized in that: The top surface of the pump house roof (4) is an inclined surface sloping downward in the downstream direction, and the inclination angle is 5°.

7. The waterproof structure of the dam pump house roof according to claim 6, characterized in that: A retaining wall (8) is provided at the downstream edge of the pump house roof (4), and a drain hole (9) is provided at the root of the retaining wall (8).

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