Anti-seepage structure of reservoir in salted red clay area
By setting up an impermeable structural layer and a retaining structure at the bottom of the reservoir in the saline red clay region, the problems of salt swelling, frost heave and corrosion of the reservoir in the saline soil region were solved, achieving effective seepage prevention and economic benefits.
Patent Information
- Application Number
- CN202423235059.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The migration of water and salt in saline soil areas causes salt swelling and frost heave on the bottom plate of red clay reservoirs, which seriously threatens the normal operation of the reservoirs and has a significant corrosive effect from water.
An impermeable structural layer is set at the bottom of the reservoir, including a first gravel layer, a sandy soil layer, a first waterproof geotextile layer, a saline red clay cushion layer, a surface layer, and a second waterproof geotextile layer. The waterproof geotextile layer is used to prevent groundwater from seeping in and reservoir water from seeping out. Combined with the retaining structure and anchors, it is fixed to prevent the structural layer from moving and corroding.
It effectively prevents groundwater infiltration and water seepage from the reservoir, reduces corrosion, extends the service life of the reservoir, and saves economic costs.
Smart Images
Figure CN223593434U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the water storage pool anti -seepage technical field, concretely relates to a kind of anti -seepage structures of water storage pool in saline red clay area. BACKGROUND
[0002] With the seasonal change of Gobi area, water salt migration in saline soil is significant, and sulfate saline soil has obvious salt expansion and frost heaving effect on the bottom plate of red clay water storage pool, which seriously threatens the normal working performance of water storage pool in saline area. Since the alkalinity of water in saline soil area is larger, the corrosion effect on the bottom surface layer of water storage pool is larger. CONTENT OF UTILITY MODEL
[0003] To solve the above technical problems, the utility model aims at providing an anti-seepage structure of water storage pool in saline red clay area, which sets an anti-seepage structure layer at the bottom of the water storage pool, and sets waterproof geotextile layers on the top and bottom of the anti-seepage structure layer, to prevent the corrosion of water in the water storage pool on the water storage pool.
[0004] To achieve the above purpose, the utility model adopts the technical scheme that:
[0005] An anti-seepage structure of water storage pool in saline red clay area, comprising an anti-seepage structure layer, which is arranged on the inner surface of the pit of the water storage pool, and comprises, from bottom to top, a first gravel layer, a sandy soil layer, a first waterproof geotextile layer, a saline red clay cushion layer, a surface layer and a second waterproof geotextile layer. The first waterproof geotextile layer is used to prevent underground seepage water from seeping in, and the second waterproof geotextile layer is used to prevent water in the water storage pool from seeping out.
[0006] Further, the upper end of the pit is provided with a support structure for supporting the anti-seepage structure layer.
[0007] Further, the anti-seepage structure layer is provided with an anchor for fixing the second waterproof geotextile layer.
[0008] Further, the anchor on the upper part of the second waterproof geotextile layer is coated with epoxy resin glue to seal it.
[0009] Further, the anchor is a bolt, and the bottom of the bolt extends into the anti-seepage structure layer to fasten the second waterproof geotextile layer.
[0010] Further, the support structure is buried below the ground surface, and the buried depth is greater than the depth of frozen soil. The support structure comprises, from bottom to top, a second gravel layer, a concrete cushion layer and a concrete retaining wall, and the upper end of the concrete retaining wall is enclosed and stopped at the outer periphery of the upper end of the anti-seepage structure layer.
[0011] Furthermore, the concrete retaining wall is composed of a longitudinal concrete retaining wall and a transverse concrete retaining wall. The transverse concrete retaining wall is laid horizontally on the concrete cushion layer, and the longitudinal concrete retaining wall is set vertically on the transverse concrete retaining wall and integrated with it. The upper end of the longitudinal concrete retaining wall stops at the outer periphery of the seepage prevention structure layer.
[0012] Furthermore, the perimeter of the second waterproof geotextile layer extends at least to half the height of the outer wall of the longitudinal concrete retaining wall; the end of the bolt penetrates at least half the thickness of the saline red clay cushion layer.
[0013] Furthermore, the compaction coefficients of the first gravel layer, the second gravel layer, and the sandy soil layer must all be greater than 0.95.
[0014] This utility model has the following advantages due to the adoption of the above technical solution:
[0015] This utility model provides a seepage-proof structure for a reservoir in a saline red clay area. A seepage-proof structural layer is laid at the bottom of the reservoir. From bottom to top, the seepage-proof structural layer consists of a first gravel layer, a sandy soil layer, a first waterproof geotextile layer, a saline red clay cushion layer, a surface layer, and a second waterproof geotextile layer. The first waterproof geotextile layer prevents groundwater seepage, and the second waterproof geotextile layer prevents water from seeping out of the reservoir. Using saline red clay as the cushion layer of the reservoir can save significant economic costs and improve economic efficiency. The first and second waterproof geotextile layers form an internal and external waterproof layer, preventing water corrosion of the bottom surface layer of the reservoir and extending the service life of the reservoir. Attached Figure Description
[0016] Figure 1 This is a cross-sectional schematic diagram of a water storage tank in a saline red clay area according to the present invention.
[0017] Figure 2 for Figure 1 A partial cross-sectional view of section A in the middle.
[0018] Figure 3 for Figure 2 Schematic diagram of a partial cross-section of section B in the middle.
[0019] Figure 4 This is a plan view of a water storage tank in a saline red clay area according to the present invention;
[0020] Figure 5 This is a cross-sectional schematic diagram of the support structure of this utility model.
[0021] The attached diagram is labeled as follows: 1-First gravel layer, 2-Sandy soil layer, 3-First waterproof geotextile layer, 4-Saline red clay cushion layer, 5-Surface layer, 6-Second waterproof geotextile layer, 7-Bolt, 8-Epoxy resin adhesive, 9-Support structure, 901-Gravel layer, 902-Concrete cushion layer, 903-Concrete retaining wall, 904-Longitudinal concrete retaining wall, 905-Transverse concrete retaining wall, 10-Pit, 11-Ground surface. Detailed Implementation
[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.
[0023] like Figures 1-4 As shown. This utility model provides a seepage-proof structure for a reservoir in a saline red clay area. A seepage-proof structural layer is provided on the inner surface of the reservoir's pit. The seepage-proof structural layer consists of, from bottom to top, a first gravel layer 1, a sandy soil layer 2, a first waterproof geotextile layer 3, a saline red clay cushion layer 4, a surface layer 5, and a second waterproof geotextile layer 6. The first waterproof geotextile layer 3 is used to prevent groundwater seepage, and the second waterproof geotextile layer 6 is used to prevent water from seeping out of the reservoir.
[0024] Specifically, the reservoir also includes a reservoir structure and anchoring components. The reservoir structure consists of a support structure 9 and a recess 10. The support structure 9 forms the sidewalls of the reservoir structure and is located around the upper edge of the recess, supporting the impermeable structural layer. The recess 10 stores water; the impermeable structural layer is laid on the inner surface of the recess 10 to prevent water seepage. Both the first waterproof geotextile layer 3 and the second waterproof geotextile layer 6 of the impermeable structural layer are made of waterproof geotextile. The first waterproof geotextile layer 3 prevents seepage water from the saline soil from penetrating the saline red clay cushion layer 4, and the second waterproof geotextile layer 6 prevents water from the reservoir from penetrating the surface layer 5. The laying process of the first waterproof geotextile layer 3 and the second waterproof geotextile layer 6 is known to those skilled in the art.
[0025] The saline red clay cushion layer 4 needs to be compacted in layers, with a thickness of 500mm. The material mix ratio of saline red clay cushion layer 4 is: sulfate, saline red clay, polypropylene fiber, silicate cement, quicklime, and water. Sulfate, polypropylene fiber, silicate cement, and quicklime effectively increase the strength of the saline red clay layer and reduce its expansion rate.
[0026] The surface layer 5 is made by mixing pea gravel and red clay in any proportion. The pea gravel has a particle size of 40-60mm, and the red clay is ordinary red clay.
[0027] Furthermore, to ensure the compactness of the seepage-proof structural layers, the compaction coefficients of both the first gravel layer 1 and the sandy soil layer 2 must be greater than 0.95. The sandy soil layer 2 has a thickness of 200mm, and its surface needs to be leveled after construction. The gravel in the first gravel layer 1 is sourced from existing gravel materials from saline-alkali areas.
[0028] Furthermore, to secure the second waterproof geotextile layer 6 and prevent it from shifting under water pressure, anchors for fixing the second waterproof geotextile layer 6 are provided on the impermeable structural layer. The second waterproof geotextile layer 6 is secured using these anchors. The anchors are arranged in a sequential array on the second waterproof geotextile layer 6.
[0029] Furthermore, to prevent the anchors from rusting, epoxy resin adhesive 8 is applied to the anchors located on the upper part of the second waterproof geotextile layer 6 to seal them.
[0030] Furthermore, the anchor is bolt 7, the bottom of bolt 7 extending into the impermeable structural layer to secure the second waterproof geotextile layer 6. The end of bolt 7 penetrates at least 1 / 2 the thickness of the saline red clay cushion layer 4. After bolt 7 is anchored, epoxy resin adhesive 8 is evenly applied to the top of bolt 7 to prevent rusting at the top of bolt 7.
[0031] As a preferred option, the anchor can also be a rivet.
[0032] Furthermore, such as Figure 5 As shown. The retaining structure 9 is buried below the ground surface 11. It is set on the outer periphery of the seepage-proof structural layer to stop and support the seepage-proof structural layer. The burial depth of the retaining structure 9 is greater than the frost depth to avoid the influence of frost. The upper end face of the retaining structure 9 is flush with the upper end face of the seepage-proof structural layer. The retaining structure 9 is composed of a second gravel layer 901, a concrete cushion layer 902, and a concrete retaining wall 903 stacked sequentially from bottom to top. The upper end of the concrete retaining wall 903 surrounds and stops the seepage-proof structural layer on its upper outer periphery.
[0033] Furthermore, the concrete retaining wall 903 consists of a longitudinal concrete retaining wall 904 and a transverse concrete retaining wall 905. The transverse concrete retaining wall 905 is laid horizontally on the concrete cushion layer 902, and the longitudinal concrete retaining wall 904 is vertically installed on the transverse concrete retaining wall 905, forming an integral unit. The upper end of the longitudinal concrete retaining wall 904 stops at the outer perimeter of the seepage-proof structural layer. The gravel in the second gravel layer 901 uses gravel materials originally from the saline area, and the compaction coefficient of the second gravel layer 901 must be greater than 0.95. The construction of the retaining structure 9 can be carried out by professionals in the relevant field, and there are no special requirements.
[0034] Furthermore, in order to prevent water seepage to the outside of the upper end of the pit, the perimeter of the second waterproof geotextile layer 6 extends at least to half the height of the outer wall of the longitudinal concrete retaining wall 904.
[0035] The utility model discloses a construction method of salted red clay pool structure, which comprises the following steps:
[0036] Step S1, construction of pool structure system according to construction drawings, including pit and retaining structure.
[0037] Step S2, first gravel layer 1 construction, the gravel of first gravel layer 1 uses the original material of salted region, and the ramming coefficient of first gravel layer 1 needs to be greater than 0.95.
[0038] Step S3, sandy soil layer 2 construction, the laying thickness of sandy soil layer 2 is 200mm, and the ramming coefficient of sandy soil layer 2 needs to be greater than 0.95, and the surface of sandy soil layer 2 needs to be leveled after construction.
[0039] Step S4, laying first waterproof geotextile layer 3, the first waterproof geotextile 3 needs to be leveled before laying, and the first waterproof geotextile 3 needs to be inlaid with the surface of sandy soil layer 2.
[0040] Step S5, salted red clay cushion layer 4 construction, salted red clay cushion layer 4 is layered rammed, and the laying thickness is 500mm, and the next process is carried out after the construction of salted red clay cushion layer 4 is completed. The material mixing ratio of salted red clay cushion layer 4 is: sulfate, salted red clay, polypropylene fiber, silicate cement, quicklime and water are mixed in a ratio of 1:24:1.44:2.4:3.6:25.
[0041] Step S6, surface layer 5 construction, the surface layer 5 is formed by mixing pea gravel and red mortar in any ratio, the particle size of pea gravel is 40mm-60mm, the red mortar is ordinary red mortar, and the surface layer 5 can also be constructed and manufactured by relevant field professionals according to the actual situation on site.
[0042] Step S7, laying second waterproof geotextile layer 6, the second waterproof geotextile layer 6 needs to be cleaned of surface debris before laying, and the end of the second waterproof geotextile layer 6 extends to 1 / 2 of the outer wall of retaining structure 9.
[0043] Step S8, fixing second waterproof geotextile layer 6, to prevent the second waterproof geotextile layer 6 from moving under the action of water pressure, the second waterproof geotextile layer 6 is anchored and fixed by bolts 7. The end of bolt 7 penetrates into the thickness of salted red clay cushion layer 4 by 1 / 2, the distance between bolts 7 is 10-15m, and after the anchoring of bolts 7 is completed, epoxy resin glue 8 is evenly applied on the top of bolts 7, and the epoxy resin glue 8 is used for preventing the top of bolts 7 from rusting.
Claims
1. A seepage-proof structure for a reservoir in a saline-red clay soil area, characterized in that: The anti-seepage structure layer is arranged on the inner surface of the pit, and the anti-seepage structure layer comprises, from bottom to top, a first gravel layer (1), a sandy soil layer (2), a first waterproof geotextile layer (3), a saline red clay cushion layer (4), a surface layer (5), and a second waterproof geotextile layer (6); the first waterproof geotextile layer (3) is used for preventing underground seepage water from seeping in, and the second waterproof geotextile layer (6) is used for preventing water in the pit from seeping out.
2. The anti-seepage structure of a reservoir in a saline red clay area according to claim 1, characterized in that: The upper end of the pit is provided with a supporting structure (9) for supporting the anti-seepage structure layer.
3. The anti-seepage structure of a reservoir in a saline red clay area according to claim 2, characterized in that: An anchoring member is arranged on the anti-seepage structure layer and used for fixing the second waterproof geotextile layer (6).
4. The anti-seepage structure of a reservoir in a saline red clay area according to claim 3, characterized in that: An epoxy resin adhesive (8) is coated on the anchoring member at the upper portion of the second waterproof geotextile layer (6) to seal the anchoring member.
5. The anti-seepage structure of a reservoir in a saline red clay region according to claim 3 or 4, characterized in that: The anchoring member is a bolt (7), and the bottom of the bolt (7) extends into the anti-seepage structure layer to fasten the second waterproof geotextile layer (6).
6. The anti-seepage structure of a reservoir in a saline red clay area according to claim 5, characterized in that: The supporting structure (9) is embedded below the ground surface (11) and has a depth greater than the depth of frozen earth; the supporting structure (9) comprises, from bottom to top, a second gravel layer (901), a concrete cushion layer (902), and a concrete retaining wall (903), and the upper end of the concrete retaining wall (903) is enclosed and stopped at the outer periphery of the upper end of the anti-seepage structure layer.
7. The anti-seepage structure of a reservoir in a saline red clay area according to claim 6, characterized in that: The concrete retaining wall (903) is composed of a longitudinal concrete retaining wall (904) and a transverse concrete retaining wall (905); the transverse concrete retaining wall (905) is horizontally arranged on the concrete cushion layer (902); the longitudinal concrete retaining wall (904) is vertically arranged on the transverse concrete retaining wall (905) and integrated with the transverse concrete retaining wall (905); and the upper end of the longitudinal concrete retaining wall (904) is stopped at the outer periphery of the anti-seepage structure layer.
8. The anti-seepage structure of a reservoir in a saline red clay area according to claim 7, characterized in that: The four peripheral ends of the second waterproof geotextile layer (6) extend to a position at least 1 / 2 of the height of the outer side wall of the longitudinal concrete retaining wall (904); and the end of the bolt (7) extends into the saline red clay cushion layer (4) by a depth of at least 1 / 2 of the thickness of the saline red clay cushion layer (4).
9. The anti-seepage structure of a reservoir in a saline red clay area according to claim 8, characterized in that: The tamping coefficients of the first gravel layer (1), the second gravel layer (901), and the sandy soil layer (2) are all greater than 0.95.