Deep foundation pit slope protecting and reinforcing device

Abstract

The utility model relates to the technical field of slope protection, in particular to a deep foundation pit slope protection reinforcing device which comprises a soil layer, a plurality of hole channels are evenly formed in the soil layer, reinforcing assemblies are fixedly installed in the hole channels, and each reinforcing assembly comprises a cross anchor rod, a protection sleeve and a fastening groove. A net hanging and concrete spraying protection slope is mounted on the slope surface of the soil layer; the drainage ditches formed in the side ends of the waterproof curtains can prevent surface water from flowing into the waterproof curtains, reverse osmosis caused by accumulated water in the waterproof curtains is avoided, the hanging net concrete spraying revetments are solidified into a whole after guniting is completed, washing of rainwater can be effectively resisted, the hanging net concrete spraying revetments are tightly connected with the reinforcing assemblies after solidification, and therefore the waterproof curtains are protected. And the reinforcing assembly is fixedly connected with concrete in the soil layer, so that the conditions of landslide and the like caused by hanging net concrete spraying slope protection can be effectively avoided, and the effects of enhancing the slope stability of the foundation pit and improving the safety of the foundation pit are achieved.

Description

Technical Field

[0001] This utility model relates to the field of slope protection technology, and in particular to a deep foundation pit slope protection and reinforcement device. Background Technology

[0002] In the field of construction engineering, the protection and reinforcement of deep foundation pit slopes are crucial for ensuring construction safety and project quality. With the continuous development of urban construction, deep foundation pit projects are increasing in number and scale, making the stability challenges faced by deep foundation pit slopes increasingly severe. In practical applications, deep foundation pit slope protection and reinforcement structures typically require the following technologies:

[0003] 1. Slope protection technology: Using methods such as shotcrete and wire mesh spraying to protect the slope of deep foundation pits;

[0004] 2. Deep reinforcement technology: Anti-slide piles, prestressed anchor cables and other measures are used to reinforce the deep soil of the slope;

[0005] 3. Drainage technology: To avoid the adverse effects of groundwater on slope stability, a complete drainage system needs to be installed.

[0006] During construction, if the area has complex geological conditions or a large slope, the complex geological conditions may lead to uneven soil properties, the presence of weak interlayers or easily sliding soil layers, which reduces the overall stability of the soil. The large slope height will increase the sliding force generated by the slope's own weight, increasing the possibility of slope instability. Once the slope becomes unstable, it will not only force the interruption of deep foundation pit construction, causing delays and economic losses, but may also trigger a collapse accident, posing a serious threat to the lives of construction workers. At the same time, it will damage surrounding buildings, roads, underground pipelines and other infrastructure, affecting the normal operation and development of the city. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a deep foundation pit slope protection and reinforcement device. It solves the problem of complex geological conditions or steep slopes encountered during construction. Complex geological conditions may lead to uneven soil properties, the presence of weak interlayers or easily sliding soil layers, reducing the overall stability of the soil. Furthermore, steep slopes increase the sliding force generated by the slope's own weight, increasing the likelihood of slope instability. Once slope instability occurs, it not only forces the interruption of deep foundation pit construction, causing delays and economic losses, but may also trigger collapse accidents, posing a serious threat to the lives of construction workers. Simultaneously, it damages surrounding buildings, roads, underground pipelines, and other infrastructure, affecting the normal operation and development of the city.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A deep foundation pit slope protection and reinforcement device includes a soil layer with multiple channels evenly distributed on the soil layer. Reinforcement components are fixedly installed in each of the multiple channels. The reinforcement components include cross anchors, protective sleeves, and fastening grooves. A wire mesh and shotcrete slope protection is installed on the slope of the soil layer. The protective sleeves wrap around the outside of the cross anchors, and the fastening grooves are evenly distributed on the protective sleeves. The wire mesh and shotcrete slope protection covers the top of the reinforcement components.

[0010] Preferably, a construction platform is provided in the middle section of the soil layer.

[0011] Preferably, the construction platform has drainage ditches.

[0012] Preferred option: A water-stop curtain is provided on the construction platform.

[0013] Preferably, the construction platform has multiple mounting holes evenly spaced.

[0014] Preferably, retaining piles are fixedly installed inside the multiple mounting holes.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The water-stop curtain can prevent groundwater from seeping into the foundation pit. A water pump placed inside the water-stop curtain can extract the water that accumulates within it. After sedimentation, the extracted water can be used to mix concrete. The retaining piles located at the sides of the water-stop curtain further enhance the shear strength and stability of the soil layer. Drainage ditches at the sides of the water-stop curtain prevent surface water from flowing into it, thus preventing backflow caused by water accumulation inside the curtain. The shotcrete retaining mesh solidifies into a single unit after spraying, effectively resisting rainwater erosion. Once solidified, the shotcrete retaining mesh is tightly connected to the reinforcement components, which in turn are firmly connected to the concrete in the soil layer. This effectively prevents landslides and other damage to the shotcrete retaining mesh, achieving the effect of strengthening the stability of the foundation pit slope and improving the safety of the foundation pit. Attached Figure Description

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional cross-sectional view of the present invention;

[0019] Figure 2 This is a side sectional view of the present invention;

[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 This is a structural diagram of the reinforcement component of this utility model.

[0022] Legend: 1. Soil layer; 2. Cross anchor bolt; 3. Protective sleeve; 4. Fastening groove; 5. Shotcrete slope protection with wire mesh; 6. Construction platform; 7. Drainage ditch; 8. Water-stop curtain; 9. Retaining piles. Detailed Implementation

[0023] This application provides a deep foundation pit slope protection and reinforcement device, effectively solving the technical problem of encountering areas with complex geological conditions or large slope heights during construction. Complex geological conditions may lead to uneven soil properties, the presence of weak interlayers or easily sliding soil layers, reducing the overall stability of the soil. Larger slope heights increase the sliding force generated by the slope's own weight, increasing the possibility of slope instability. Once slope instability occurs, it not only forces the interruption of deep foundation pit construction, causing delays and economic losses, but may also trigger collapse accidents, posing a serious threat to the lives of construction workers. Furthermore, it can damage surrounding buildings, roads, underground pipelines, and other infrastructure, affecting the normal operation and development of the city. The water curtain can prevent groundwater from seeping into the foundation pit. A water pump placed inside the water curtain can extract the water that accumulates within it. After sedimentation, the extracted water can be used to mix concrete. The retaining piles located at the sides of the water curtain further enhance the shear strength and stability of the soil layer. Drainage ditches at the sides of the water curtain prevent surface water from flowing into it, thus preventing backflow caused by water accumulation inside the water curtain. The shotcrete retaining mesh solidifies into a single unit after spraying, effectively resisting rainwater erosion. Once solidified, the shotcrete retaining mesh is tightly connected to the reinforcement components, which in turn are firmly connected to the concrete in the soil layer. This effectively prevents landslides and other damage to the shotcrete retaining mesh, achieving the effect of strengthening the stability of the foundation pit slope and improving the safety of the foundation pit. Example

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in this application effectively addresses the challenges of construction work in areas with complex geological conditions or large slopes. Complex geological conditions can lead to uneven soil properties, the presence of weak interlayers or easily sliding soil layers, reducing the overall stability of the soil. Larger slopes increase the sliding force generated by the slope's own weight, increasing the likelihood of slope instability. Slope instability not only forces the interruption of deep foundation pit construction, causing delays and economic losses, but can also trigger collapse accidents, posing a serious threat to the lives of construction workers. Furthermore, it can damage surrounding buildings, roads, underground pipelines, and other infrastructure, affecting the normal operation and development of the city. The overall approach is as follows:

[0025] To address the problems existing in the prior art, this utility model provides a deep foundation pit slope protection and reinforcement device, including a soil layer 1, on which multiple channels are evenly opened, and reinforcement components are fixedly installed in each of the multiple channels. The reinforcement components include cross anchor rods 2, protective sleeves 3, and fastening grooves 4. A wire mesh and shotcrete slope protection 5 is installed on the slope surface of the soil layer 1.

[0026] The protective sleeve 3 is wrapped around the outside of the cross anchor rod 2, the fastening groove 4 is evenly opened on the protective sleeve 3, the wire mesh sprayed concrete slope protection 5 is wrapped around the top of the reinforcement component, and the construction platform 6 is opened in the middle section of the soil layer 1.

[0027] A drainage ditch 7 is provided on the construction platform 6, a water-stop curtain 8 is provided on the construction platform 6, and multiple installation holes are evenly provided on the construction platform 6. Retaining piles 9 are fixedly installed inside the multiple installation holes.

[0028] Soil layer 1: This is the object of deep foundation pit slope protection and reinforcement, and also the basic load-bearing part of the entire device. The slope surface formed by excavation is used to set up reinforcement components and wire mesh sprayed concrete slope protection 5. A construction platform 6 is set up in the middle section to provide installation positions for other protection and reinforcement components. The soil condition determines the depth of the ducts, which has a key impact on the design and construction of the entire protection and reinforcement structure.

[0029] Cross anchor 2: As the core load-bearing component of the reinforcement assembly, it is installed in the duct of soil layer 1 and undertakes the main load-bearing task of reinforcement. Through close bonding with concrete, it enhances the stability of soil layer 1 and prevents slope instability such as landslides.

[0030] Protective sleeve 3: Its main function is to improve the corrosion resistance of the cross anchor bolt 2, extend its service life, and ensure that the cross anchor bolt 2 can continue to play a reinforcing role effectively during long-term use;

[0031] Fastening groove 4: When the reinforcing component is inserted into the uncured concrete, the concrete slurry flows into it. After the concrete has solidified, the reinforcing component is fastened to the concrete, which enhances the stability and anchoring force of the reinforcing component in the soil layer 1.

[0032] 5. Shotcrete slope protection with wire mesh: After the shotcrete solidifies, it forms a whole that can effectively resist the erosion of the slope by rainwater. It is tightly connected with the reinforcement components, further enhancing the stability of the slope and preventing soil peeling and landslides.

[0033] Platform 6 provides space for the installation of protective and reinforcement facilities such as drainage ditches 7, water-stop curtains 8, and retaining piles 9, facilitating construction operations and equipment parking;

[0034] Drainage ditch 7: It can divert surface water to prevent it from flowing into the water-stop curtain 8, prevent water accumulation inside the water-stop curtain 8 from causing back seepage, ensure the normal operation of the water-stop curtain 8, and maintain the stability of the foundation pit slope.

[0035] Water-stop curtain 8: It prevents groundwater from seeping into the foundation pit, reducing the adverse effects of groundwater on the stability of the foundation pit slope. A water pump placed in it can extract the accumulated water, which can be used to mix concrete after sedimentation, thus realizing the recycling of water resources.

[0036] Retaining piles 9: Located at the side end of the water-stop curtain 8, they further enhance the shear strength and stability of the soil layer 1, work together with the water-stop curtain 8 to improve the overall protection capacity of the foundation pit slope, and prevent lateral displacement and landslides in the soil layer 1.

[0037] Working principle:

[0038] The first step is to drill evenly holes on the slope formed during excavation. The depth of the holes is determined by the soil quality; deeper holes are needed in areas with soft soil. After drilling, concrete is poured into the holes. Before the concrete sets, reinforcement components are inserted into the holes so that the concrete encapsulates the reinforcement components. A construction platform 6 is created in the middle section of soil layer 1, and a drainage ditch 7 is excavated on the construction platform 6. Multiple interconnected holes are drilled using a drilling machine to form a water-stop curtain 8. Independent installation holes are evenly drilled on the fastening groove 4, and steel cages and concrete are added into the installation holes to form retaining piles 9. The mesh is fixed by multiple reinforcement components, and then shotcrete is applied to form a mesh-reinforced shotcrete slope protection 5.

[0039] The second step involves using a water-stop curtain 8 to prevent groundwater from seeping into the foundation pit. A water pump placed within the water-stop curtain 8 can extract the accumulated water. After sedimentation, the extracted water can be used to mix concrete. The retaining piles 9, located on the side of the water-stop curtain 8, further enhance the shear strength and stability of the soil layer 1. Drainage ditches 7 on the side of the water-stop curtain 8 prevent surface water from flowing into it, thus avoiding backflow caused by water accumulation inside the curtain. The shotcrete retaining mesh 5 solidifies into a single unit after shotcreting, effectively resisting rainwater erosion. After solidification, the reinforcement component is tightly connected to the concrete in the soil layer 1. This effectively prevents landslides and other issues from occurring on the shotcrete slope protection 5, thus enhancing the stability of the foundation pit slope and improving the safety of the foundation pit. The cross anchor rod 2 in the reinforcement component bears the main load, while the protective sleeve 3 located outside the cross anchor rod 2 is used to improve the corrosion resistance of the cross anchor rod 2. The fastening grooves 4 evenly opened on the protective sleeve 3 allow grout to flow into the fastening grooves 4 when inserted into the uncured concrete. After the concrete solidifies, the fastening connection is completed.

[0040] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A deep foundation pit slope protection and reinforcement device, comprising a soil layer (1), characterized in that, Multiple channels are evenly opened on the soil layer (1), and a reinforcement component is fixedly installed in each of the multiple channels. The reinforcement component includes a cross anchor rod (2), a protective sleeve (3) and a fastening groove (4). A wire mesh sprayed concrete slope protection (5) is installed on the slope of the soil layer (1). The protective sleeve (3) is wrapped around the outside of the cross anchor rod (2), the fastening groove (4) is evenly opened on the protective sleeve (3), and the wire mesh sprayed concrete slope protection (5) wraps around the top of the reinforcement component.

2. The deep foundation pit slope protection and reinforcement device as described in claim 1, characterized in that, A construction platform (6) is provided in the middle section of the soil layer (1).

3. The deep foundation pit slope protection and reinforcement device as described in claim 2, characterized in that, The construction platform (6) is provided with a drainage ditch (7).

4. The deep foundation pit slope protection and reinforcement device as described in claim 2, characterized in that, A water-stop curtain (8) is provided on the construction platform (6).

5. The deep foundation pit slope protection and reinforcement device as described in claim 2, characterized in that, The construction platform (6) has multiple mounting holes evenly spaced.

6. The deep foundation pit slope protection and reinforcement device as described in claim 5, characterized in that, Each of the aforementioned mounting holes is fitted with a retaining pile (9).

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