A method of repairing leaks in underground works using a hollow layer and a positioning crack

Abstract

A method for repairing underground engineering leaks using a hollow layer and targeted cracks is disclosed. Current underground engineering leak repair methods involve completely excavating the surface layer, then constructing a waterproof layer and a concrete surface layer. This requires handling large amounts of construction waste, is time-consuming, costly, and the structural cracks can still allow water to seep through. This invention only excavates the surface layer at the seepage point, repairs the structural cracks, then cuts a drainage channel to a collection well, lays drainage boards over the excavated area, and pours a concrete surface layer. A second method involves cutting a grid drainage channel into the original floor, repairing the seepage cracks, then fully laying drainage boards and pouring a concrete surface layer. The advantages are: avoiding complete excavation of the surface layer, saving on waste handling and disposal costs; avoiding a complete waterproof layer, saving more than half the cost; and a shorter construction period. The core theory is to repair cracks and isolate the seepage, allowing water to drain through the hollow layer, resulting in permanent leak-free indoor spaces.

Description

I. Technical Field

[0001] A method for repairing leakage in underground engineering using hollow layers and positioning cracks, relating to the field of building waterproofing, and particularly to the repair of leakage in underground engineering. II. Background Technology

[0002] Current methods for repairing leaks in underground engineering projects involve completely excavating the surface layer to locate the seepage cracks, then installing a waterproof layer and a concrete surface layer. This requires handling large amounts of construction waste, environmentally friendly treatment, and is time-consuming and costly. Furthermore, structural cracks can lead to water seepage spreading to the surface – these are the realities of current engineering repair practices.

[0003] There are two main reasons for leakage: (1) there are water-seeping cracks in the structure; and (2) water can seep into the room. Even if a waterproof layer is laid, water will still seep out through the cracks. Therefore, completely removing the floor, laying a waterproof layer, and then rebuilding the floor is a waste of money and effort, and does not solve the fundamental problem. This is a shortcoming of traditional repair methods. III. Summary of the Invention

[0004] To address the root causes of the above two leaks, the specific steps are: (1) only chisel open the surface layer of the leaking area and repair the structural cracks; (2) then cut a water channel to the collection well; (3) lay drainage boards on the chiseled area and pour a concrete surface layer; (4) if there are other leaking cracks, the leaking water will automatically flow in the direction of least resistance, so the leaking water will flow from the cracks on the structural surface into the hollow layer and then into the collection well. The second method is even simpler: (1) cut a grid water channel on the original floor and repair the leaking cracks; (2) then fully lay drainage boards and pour a concrete surface layer; (3) the floor elevation will be raised by 40-80mm; (4) leave a water channel with low resistance for the leaking water, so the leaking water will automatically flow into the collection well and will not affect the interior.

[0005] The specific procedure is as follows: chisel open a small portion of the surface layer, find the cracks, locate and repair them, then cut the surface layer to leave a water channel leading to the collection well. Lay drainage boards on the chiseled parts and the water channel, and pour concrete surface layer. If there are other seepage cracks, the seepage will also flow into the hollow layer with low resistance in the gaps of the structural surface, and then into the collection well. The original ground elevation remains unchanged.

[0006] A water channel is cut into the original ground surface and leads to a collection well. Cracks are repaired, drainage boards are laid on the original ground surface, and a hollow surface layer is poured. This is an integral moisture barrier layer, and seepage water will automatically flow into the collection well in the direction of least resistance. The original ground elevation will be raised by 40-80mm.

[0007] Installing a glass observation cover in the hollow surface layer allows for observation of whether there is structural water leakage.

[0008] There is a seepage collection box on the side of the water collection well, which can indicate whether there is still any seepage.

[0009] The beneficial effects of this invention are: it avoids completely excavating the surface layer, saving on waste transportation and disposal costs; it avoids completely installing a waterproof layer, saving on construction costs; it is a green and environmentally friendly process; it leaves a cavity with low resistance for water leakage, so water leakage will never be conducted indoors; fine structural cracks will heal themselves; water leakage from large cracks can be detected through an observation cover, and then the cracks can be repaired locally, saving more than half of the construction cost; it is a green and environmentally friendly process with a short construction period and permanent leak-free construction. IV. Description of the attached drawings

[0010] Figure 1 It is the plan layout diagram of claim 1;

[0011] Figure 2 yes Figure 1 Cross-sectional view;

[0012] Figure 3 It is the plan layout diagram of claim 2;

[0013] Figure 4 yes Figure 3 Cross-sectional view;

[0014] Figure 5 This is a cross-sectional view of the glass observation cover;

[0015] Figure 6 This is a cross-sectional view of the collection box mounted on the side of the water collection well. V. Specific Implementation Methods

[0016] Figure 1 and Figure 2 The procedure described in claim 1 involves chiseling open the surface layer of the structural base plate 9 to repair the crack 1, then cutting the water channel 3 and connecting the collection well 4. Drainage boards 6 are laid on the chiseled area and the water channel, concrete 7 is poured, and a glass observation cover 5 is installed. This allows us to see if there is any water seepage on the surface of the structure 9. Other parts remain unchanged from the original ground level 8.

[0017] Figure 3 and Figure 4 The method described in claim 2 involves cutting a water channel 3 into the original ground 8 on the surface of the structural base slab 9, repairing the crack 1, connecting the water channel 3 to the collection well 4, laying a drainage board 6 on the original ground 8, and pouring concrete 7 to form a hollow surface layer that isolates moisture.

[0018] Figure 5 The glass observation cover is installed. The drainage board 6 is laid on the surface of 8 or 9. First, the outer cover 10 of the observation cover is placed, and then concrete 7 is poured. After the concrete hardens, the drainage board under the outer cover 10 is cut open to reveal the water channel 3. Then, the inner cover 11 is placed. The glass plate 12 is at the top of the inner cover. The gap is then sealed with adhesive strip 13.

[0019] Figure 6It is a seepage collection box on the side of the water collection well. A stainless steel collection box 14 is installed on the side of the water collection well 4. On the top of the structural base plate 9 are the water inlet channel 3 and the drainage board 6, and the surface concrete 7.

Claims

1. A method for repairing leakage in underground engineering projects using hollow layers and location cracks, characterized in that: A small portion of the surface layer is chiseled open to locate and repair the cracks. The surface layer is then cut to create a drainage channel that leads to a collection well. Drainage boards are laid on the chiseled areas and the drainage channel, and a concrete surface layer is poured. If there are other seepage cracks, the seepage will flow into the hollow layer with low resistance through the gaps in the structural surface, and then into the collection well. The original ground elevation remains unchanged.

2. A method of repairing a leak in an underground structure with a hollow layer and a positioning crack, characterized in that A water channel is cut into the original ground surface and leads to a collection well. Cracks are repaired, drainage boards are laid on the original ground surface, and a hollow surface layer is poured. This is an integral moisture barrier layer, and seepage water will automatically flow into the collection well in the direction of least resistance. The original ground elevation will be raised by 40-80mm.

3. A method for repairing underground engineering leakage using hollow layers and locating cracks as described in claims 1 and 2, characterized in that: Installing a glass observation cover in the hollow surface layer allows for observation of whether there is structural water leakage.

4. A method for repairing underground engineering leakage using hollow layers and locating cracks as described in claims 1 and 2, characterized in that: There is a seepage collection box on the side of the water collection well, which can indicate whether there is still any seepage.

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