HARD PAVEMENT CONSTRUCTION METHOD FOR NATURAL GROUNDWATER RECHARGE

Abstract

The disclosure discloses a hard pavement construction method for natural groundwater recharge, comprising the following steps: drilling to an underground shallow sand zone water storage layer on a flattened earth floor, filling holes with sand, inserting rod-shaped tools into the holes filled with the sand, pouring concrete to form a concrete foundation layer with a flat surface, removing the rod-shaped tools, filling the holes with the sand to be flush with a plane of the concrete foundation layer, sanding and compacting on the concrete foundation layer, directly arranging pavement bricks on a sand surface in an unbonded manner to form a hard pavement, and enabling rain and snow water on the hard pavement to pass through cracks of the pavement bricks, rapidly and naturally recharge to the underground shallow sand zone water storage layer via the holes and slowly permeate to an underground deep sand zone water storage layer.

Claims

1. A hard pavement construction method for natural groundwater recharge, comprising the following steps: drilling to an underground shallow sand zone water storage layer on a flattened earth floor, filling holes with sand to the earth floor, inserting rod-shaped tools into the holes filled with the sand, pouring concrete to form a concrete foundation layer with a flat surface, removing the rod-shaped tools, continuously filling the holes with the sand to be flush with a plane of the concrete foundation layer, sanding and compacting on the concrete foundation layer, then directly arranging pavement bricks on a sand surface in an unbonded manner to form a hard pavement, and enabling rain and snow water on the hard pavement to pass through cracks of the pavement bricks, rapidly and naturally recharge to the underground shallow sand zone water storage layer via the holes and slowly permeate to an underground deep sand zone water storage layer.

2. The construction method according to claim 1, wherein holes are drilled orderly or disorderly on the flattened earth floor to reach a sand zone layer at a proper underground depth or a sand zone layer which penetrates through multiple shallow sand zone water storage layers; a hole diameter is 5-100 cm; and a hole distance is 0.5-20 m.

3. The construction method according to claim 1, wherein a circular stick or a stick of any shape or a rod-shaped tool of other materials consistent with the drilled holes in shape and size is inserted into the hole filled with the sand; and the rod-shaped tool is removed after the poured concrete foundation layer is dry and hard; and the holes consistent with the holes of the drilled holes in shape and size are formed in the concrete foundation layer.

4. The construction method according to claim 1, wherein the holes are filled with the sand, water is injected densely, and a sand layer with a thickness of 2-30 cm is laid on the concrete foundation layer to form a plane.

5. The construction method according to claim 1, wherein the pavement bricks are directly arranged on a surface of the sand layer orderly or disorderly in an unbonded layer to form the hard pavement; a crack of every two pavement bricks is 1-50 mm; the cracks are filled with sand; and water is injected densely.

6. The construction method according to claim 1, wherein a concrete foundation layer, the sand and the pavement bricks are fixed on an edge of the hard pavement by using gravel, so that natural displacement and loss of the pavement is avoided.

7. The construction method according to claim 1, wherein a drainage channel which is 1-5 cm lower than the pavement bricks is used on the edge of the hard pavement, so that the gathered water which cannot be rapidly and naturally recharged to the underground shallow sand zone water storage layer is drained into a rainwater well.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0006] The present invention is further described below in combination with drawings and embodiments.

[0007] FIG. 1 is a top view for drilling on a flattened earth floor to form holes and filling sand;

[0008] FIG. 2 is a top view for filling holes with sand and inserting a rod-shaped tool;

[0009] FIG. 3 is top view of a poured concrete foundation layer;

[0010] FIG. 4 is a top view for removing a rod-shaped tool and filling holes with sand;

[0011] FIG. 5 is a top view for laying sand on a concrete foundation layer;

[0012] FIG. 6 is a top view of laid pavement bricks, gravel and a drainage channel; and

[0013] FIG. 7 is a structural sectional view from pavement bricks to groundwater layer.

[0014] In the figures: (1) flattened earth floor; (2) hole; (3) sand; (4) rod-shaped tool; (5) concrete foundation layer; (6) pavement brick crack; (7) pavement brick; (8) gravel; (9) drainage channel; (10) rainwater well; (11) shallow soil layer; (12) shallow sand zone water storage layer; (13) clay layer; and (14) deep sand zone water storage layer.

DETAILED DESCRIPTION

[0015] FIG. 1 and FIG. 2 show preferred embodiments: a flattened earth floor (1) is drilled underground to form holes (2), sand (3) is filled, and a rod-shaped tool (4) is inserted.

[0016] As shown in FIG. 3 and FIG. 4, after concrete is poured, a concrete foundation layer (5) is formed, the rod-shaped tool (4) is removed, the holes (2) are formed, the sand (3) is filled, and water is injected densely.

[0017] In FIG. 5 and FIG. 6, the sand (3) is laid on a plane of the concrete foundation layer (5), water is injected densely, pavement bricks (7) are orderly arranged on a horizontal plane, pavement brick cracks (6) among the pavement bricks (7) are filled with the sand (3), and water is injected densely to form a hard pavement. The concrete foundation layer (5), the sand (3) and the pavement bricks (7) are fixed by gravel (8) on an edge of the hard pavement, and a drainage channel (9) is formed on an inner side of the gravel (8), so that gathered water with super-leakage capacity can be drained into a rainwater well (10).

[0018] As shown in FIG. 7, rainwater on the hard pavement rapidly leaks to the shallow soil layer (11) and the shallow sand zone water storage layer (12) through the pavement brick cracks (6) among the pavement bricks (7) via the holes (2), is filtered by a clay layer (13) and slowly leaks to a deep sand zone water storage layer (14).