Anti-leakage gravel floor

Abstract

The utility model relates to the technical field of engineering construction, in particular to an anti-leakage gravel floor. The anti-leakage gravel terrace is characterized by comprising a gravel layer, a buffer layer, a geomembrane, a plain soil protection layer and an original soil tamping layer from bottom to top, and the gravel layer is made of gravel with the particle size of 10-20 mm. The buffer layer is arranged on the lower portion of the rubble layer and is mainly characterized in that the geomembrane on the lower portion is protected, and the rubble layer on the upper portion is prevented from scratching the geomembrane. The buffer layer is divided into an upper layer and a lower layer, and the upper layer is formed by laying a composition of fine-particle sandy soil and a polymer material and has good energy absorption and buffer performance; the lower layer is made of rubber particles with good elasticity. The plain soil protection layer is designed to be of a multi-layer structure and comprises a fine-particle sand soil layer, a plant root system layer with good anti-scouring performance and a porous material layer. According to the utility model, the trend of serious collapse of the gravel terrace in the salinized soil area can be effectively solved, and the problem of water seepage of the gravel terrace can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering construction technical field, concretely relates to a kind of anti-seepage type broken stone terrace. BACKGROUND

[0002] With the vigorous development of new energy in Qinghai-Hexi region, multiple collection stations and substations are newly built in the region. According to the standardized design of substations, the equipment area of substations usually adopts broken stone terrace. The standard broken stone terrace is not provided with water isolation measures. Most of Hexi region is saline soil area. When saline soil meets water, it will dissolve and cause subsidence, resulting in loose soil structure, a large number of subsidence of broken stone terrace, change of drainage of broken stone terrace, more water accumulation in subsidence area and more serious subsidence.

[0003] The utility model protects the overall drainage of equipment field by effectively isolating the downward infiltration of rainwater in station area through the geomembrane layer under the broken stone terrace, reduces the subsidence problem of broken stone terrace in equipment area and improves the safe operation of substation. CONTENT OF UTILITY MODEL

[0004] The main content of the utility model is an anti-seepage type broken stone terrace. A layer of geomembrane is arranged between the broken stone layer and the original soil layer, effectively isolating the downward infiltration of rainwater in station broken stone terrace and enabling effective implementation of station drainage.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] An anti-seepage type broken stone terrace comprises the following structures from bottom to top: broken stone layer, buffer layer, geomembrane, plain soil protection layer and original soil rammed layer.

[0007] Further, the broken stone layer adopts broken stone with particle size of 10-20 mm.

[0008] Further, in order to improve the compression resistance and stability of the anti-seepage type broken stone terrace, a proper amount of polymer fiber reinforced material is added to the broken stone layer. These polymer fibers can be uniformly dispersed in the broken stone layer and form effective lateral connection with broken stone particles, enhancing the overall strength and stability of the terrace and improving its compression resistance and bearing capacity.

[0009] Further, the buffer layer is arranged at the lower part of the broken stone layer and mainly protects the lower geomembrane to prevent the upper broken stone layer from scratching the geomembrane.

[0010] Further, the buffer layer is divided into two layers. The upper layer is laid with a combination of fine-grained sandy soil and polymer material, having good energy absorption and buffering performance. The lower layer adopts rubber particles with good elasticity, which can effectively reduce the influence of earthquake or external force on foundation and disperse impact force.

[0011] Further, the geomembrane, which is mainly an anti-seepage film as an anti-seepage base layer, can effectively isolate the downward infiltration of the upper water body in combination with the geotextile.

[0012] The plain soil protection layer is designed as a multi-layer structure, including a fine-grained sand layer, a plant root layer with good anti-scouring performance and a porous material layer.

[0013] The sand layer needs to be sieved, and particles larger than 6 mm are not allowed to exist to prevent damage to the geomembrane.

[0014] The original soil tamping layer usually tamps the backfill soil in layers, and the layer tamping thickness is determined according to the compaction machinery and is not greater than 300 mm, and the compaction coefficient is not less than 0.95.

[0015] The beneficial effects of the utility model are as follows: the implementation of the utility model can effectively solve the serious collapse trend of the gravel pavement in the saline-alkali soil area, can effectively improve the water seepage problem of the gravel pavement, can guarantee the drainage of the gravel pavement, can make the drainage system of the entire station area not be damaged, and thus can guarantee the safe and stable operation of the substation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the anti-seepage type gravel pavement of the utility model;

[0017] 1-gravel layer, 2-80mm thick buffer layer, 3-300g / m2 specification geomembrane, 4-100mm thick plain soil protection layer, 5-original soil tamping layer. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be further explained and described below in combination with specific embodiments.

[0019] The main content of the utility model is an anti-seepage type gravel pavement, which mainly sets a layer of geomembrane between the gravel layer and the original soil layer, effectively isolates the downward infiltration of the rainwater of the station area gravel pavement, and enables the effective implementation of the drainage of the station area.

[0020] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0021] The utility model mainly comprises a gravel layer, an 80mm thick buffer layer, a 300g / m2 specification geomembrane, a 100mm thick plain soil, and an original soil tamping layer 5.

[0022] The gravel layer of the utility model usually adopts gravel with consistent color and luster, excellent gradation and a particle size of 10-20mm.

[0023] The 80mm thick buffer layer is arranged at the lower part of the gravel layer, mainly characterized by protecting the geomembrane at the lower part to prevent the upper gravel layer from scratching the geomembrane.

[0024] The 80mm thick buffer layer is divided into two layers, the upper layer is laid by a combination of fine particle sandy soil and polymer material, and has good energy absorption and buffering performance; the lower layer is made of rubber particles with good elasticity, which can effectively reduce the influence of earthquake or external force on the foundation and disperse the impact force.

[0025] The 300g / m2 specification geomembrane is mainly a geomembrane material composed of an anti-seepage film as an anti-seepage base layer and geotextile. The anti-seepage performance mainly depends on the permeability of the anti-seepage film, and the downward infiltration of the upper water body can be effectively isolated.

[0026] The anti-seepage film is usually made of polyvinyl chloride, low-density polyethylene, ethylene copolymer and the like, and has the properties of high molecular chemical flexibility. The main features are small weight, excellent ductility, strong deformation ability, corrosion resistance, anti-freezing and the like.

[0027] The 300g / m2 specification geomembrane mainly blocks the downward infiltration of the water body by the water resistance of the anti-seepage film, and bears the complex deformation of the water body by the strong tensile performance and ductility; the anti-seepage film is combined with the geotextile high molecular chemical fiber material, the tensile strength and puncture resistance of the anti-seepage film are increased, and the rough surface of the geotextile increases the friction of the contact surface, so that the stability of the geomembrane can be achieved.

[0028] The plain soil protection layer is designed as a multi-layer structure, including a fine particle sandy soil layer, a plant root layer with good scouring resistance and a porous material layer. Through the growth of the plant root layer and the energy absorption of the porous material, the erosion of the water flow to the plain soil protection layer is effectively reduced, and the stability and scouring resistance of the soil body are improved.

[0029] The sandy soil layer needs to be sieved, and particles larger than 6mm are not allowed to exist, so as to prevent damage to the geomembrane.

[0030] The original soil tamping layer usually tamps the backfill soil in layers, and the main technical measure is that the tamping thickness is determined according to the compaction machinery and is not greater than 300mm, and the compaction coefficient is not less than 0.95.

[0031] The utility model discloses the beneficial effect: the implementation of the utility model can effectively solve the serious tendency of the collapse of the gravel pavement in the saline soil area, can effectively improve the water seepage problem of the gravel pavement, guarantees the drainage of the gravel pavement, so that the drainage system of the whole station area is not damaged, thereby guaranteeing the safe and stable operation of the substation.

Claims

1. A leak-proof gravel floor, characterized by: From bottom to top, it includes the following structures: crushed stone layer, buffer layer, geomembrane, plain soil protective layer, and original soil compaction layer.

2. The anti-leakage gravel floor according to claim 1, characterized in that: The crushed stone layer is made of crushed stone with a particle size of 10-20 mm.

3. The anti-seepage gravel floor according to claim 1, characterized in that: The buffer layer is arranged below the gravel layer.

4. The anti-leakage gravel floor according to claim 1, characterized in that: The bare soil protective layer is a multi-layer structure, including a fine-grained sand layer, a plant root layer and a porous material layer.

5. The anti-seepage gravel floor according to claim 4, characterized in that: No particles larger than 6 mm are allowed in the sand layer.

6. The anti-seepage gravel floor according to claim 5, characterized in that: The layered compaction thickness of the original soil compaction layer is determined according to the compaction machinery and is not greater than 300 mm, and the compaction coefficient is not less than 0.95.

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