Urban pipe gallery comprehensive waterproof structure

Abstract

The utility model discloses a comprehensive waterproof structure of an urban pipe gallery. The comprehensive waterproof structure comprises an outer frame body covering the outer side of a pipe gallery main body, a base arranged at the bottom of the outer frame body, a bearing frame unit installed at the top of the outer frame body, pavement layers arranged at the top and the side portions of a bearing frame, and a waterway system arranged among the bearing frame unit, the outer frame body and the base. The waterway system comprises a first waterway unit, a second waterway unit and a third waterway unit. Collecting rainwater on the top of the pipe gallery main body by using a first waterway unit arranged on the top of the bearing frame unit; the second water path unit arranged on the side face of the outer frame serves as a drainage channel, and rainwater collected by the first water path unit is gathered to the lower portion of the pipe gallery body from the upper portion of the pipe gallery body through the drainage channel. And a third water path unit arranged in the base is used for collecting the rainwater gathered below the pipe gallery and discharging the rainwater into an external municipal pipe network. Collection, drainage and discharge of rainfall in the top area of the pipe gallery are achieved, and therefore the waterproof capacity of the pipe gallery body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of urban pipe gallery, in particular to a comprehensive waterproof structure of an urban pipe gallery. Background Art

[0002] A comprehensive pipeline corridor is an underground urban pipeline corridor; that is, a tunnel space is built underground in the city, which integrates various engineering pipelines such as electricity, communications, gas, heating, water supply and drainage, and is equipped with special inspection ports, lifting ports and monitoring systems. It implements unified planning, design, construction and management, and is an important infrastructure and "lifeline" to ensure the operation of the city.

[0003] When it rains or there is excessive water seepage on the road surface, water will accumulate around the urban pipeline corridor, which can easily penetrate into its interior, causing internal water seepage and moisture, affecting its service life. Utility Model Content

[0004] In view of the above-mentioned defects in the prior art, a comprehensive waterproof structure for an urban pipe gallery is provided, which can effectively prevent the generation of water accumulation.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] The comprehensive waterproof structure of an urban pipe gallery is characterized in that it includes an outer frame body covered on the outside of the pipe gallery body, a base provided at the bottom of the outer frame body, a bearing frame unit installed on the top of the outer frame body, a paving layer provided on the top and side of the bearing frame, and a water channel system provided between the bearing frame unit, the outer frame body, and the base; the water channel system is connected to an external municipal pipe network, the water channel system includes a first water channel unit provided in the bearing frame unit and used to collect rainwater located on the top of the bearing frame unit, a second water channel unit provided on the side wall of the outer frame body, and a third water channel unit connected to the external municipal pipe network, and the second water channel unit is connected between the first water channel unit and the third water channel unit.

[0007] According to the above technical scheme, the bearing frame unit includes a bearing frame body and a gravel layer, the bearing frame body adopts a coverless box structure, and gravel is filled in the box structure to form a gravel layer; the first water path unit includes water guide holes and water diversion grooves arranged in the bearing frame body, and multiple groups of water guide holes are arranged in parallel and at intervals at the bottom of the bearing frame box body, and each group of water guide holes is composed of a number of vertically arranged water guide holes; a water diversion groove is provided at the bottom of each group of water guide holes, the top of the water guide hole is connected to the inner side of the bearing frame box body, and the bottom of the water guide hole is connected to the water diversion groove; the water diversion groove is connected to the second water path unit.

[0008] According to the above technical solution, the bearing frame unit also includes a coarse filter and a fine filter; the coarse filter is installed above the gravel layer, and the fine filter is installed below the gravel layer.

[0009] According to the above technical scheme, the outer frame includes an upper U-shaped frame and a lower U-shaped frame, and the sizes of the upper and lower U-shaped frames match the sizes of the pipe gallery body; the lower U-shaped frame is placed on the base, the pipe gallery body is placed in the lower U-shaped frame, the upper U-shaped frame is inverted on the pipe gallery body, and the bearing frame unit is placed on the upper U-shaped block frame; matching plug blocks and slots are respectively provided on the upper U-shaped frame and the lower U-shaped frame, and the connection between the upper and lower U-shaped frames is realized by connecting the plug blocks and the latches;

[0010] The second water channel unit includes a flow channel, which is divided into an upper half and a lower half. The upper half of the flow channel is arranged in an upper U-shaped frame, and the lower half of the flow channel is arranged in a lower U-shaped frame; the upper half and the lower half of the same flow channel are aligned at the connection between the upper and lower U-shaped frames, and the top of the upper half of each flow channel is connected to a water diversion trough.

[0011] According to the above technical solution, the flow channels are distributed on both sides or one side of the outer frame; the flow channels are arranged vertically or obliquely; and a plurality of flow channels are arranged in parallel.

[0012] According to the above technical solution, a groove is opened at the top of the base, and the bottom end of the lower U-shaped frame is inserted into the inner side of the groove; the third water channel unit includes a drainage channel, which is arranged along the length direction inside the base; the bottom connections of all flow channels are connected to the drainage channel, and the drainage channel is connected to the external municipal pipeline network.

[0013] According to the above technical scheme, the water system also includes a connecting pipe; the connecting pipe is connected between the water diversion trough and the flow channel, between the upper half and the lower half of the flow channel, and between the lower half of the flow channel and the drainage channel. The connecting pipe is fixed to the bottom of the supporting frame body or the top of the upper U-shaped frame, the bottom of the upper U-shaped frame or the top of the lower U-shaped frame, and the bottom of the lower U-shaped frame or the base, and the connecting pipe protrudes from the fixed component, and the protruding part extends into the water diversion trough, the flow channel or the drainage channel.

[0014] According to the above technical scheme, the main body of the tunnel includes a base plate symmetrically arranged up and down and side plates symmetrically arranged left and right, and the base plate and the side plates form a rectangular frame structure; U-shaped grooves are opened at both ends of the side of the base plate, and U-shaped rubber sheets are fitted and installed on the inner wall surface of the U-shaped grooves, and U-shaped plates are fixedly connected to the top and bottom ends of the side plates, and the U-shaped plates are inserted into the inner side of the U-shaped rubber sheets; the outer wall surface of the tunnel main body is coated with a waterproof coating, and the outer side of the waterproof coating is wrapped and covered with multiple layers of waterproof cloth.

[0015] According to the above technical scheme, triangular plates are provided at the four corners of the inner side of the tunnel body, and multiple X-shaped reinforcement plates are installed between the upper and lower triangular plates on the same side. T-shaped plates are fixedly connected to both side surfaces of the triangular plates. Multiple T-shaped grooves are correspondingly opened around the inner side of the tunnel body 1, and the T-shaped plates are slidably inserted in the T-shaped grooves.

[0016] According to the above technical solution, the paving layer includes a stone filling layer and a soil layer. The stone filling layer is laid on the top of the bearing frame unit, and the soil layer is located above the stone filling layer and outside the outer frame and the bearing frame unit.

[0017] The utility model has the following beneficial effects:

[0018] 1. The first water channel unit located on the top of the load-bearing frame unit is used to collect rainwater on the top of the main body of the pipe gallery; the second water channel unit located on the side of the outer frame is used as a drainage channel to gather the rainwater collected by the first water channel unit from the top of the main body of the pipe gallery to the bottom of the main body of the pipe gallery through the drainage channel; the third water channel unit located in the base collects the rainwater gathered under the pipe gallery and discharges it to the external municipal pipe network. Based on the above measures, the collection, drainage and discharge of precipitation in the top area of ​​the pipe gallery are realized, thereby improving the waterproof ability of the main body of the pipe gallery.

[0019] 2. A coarse filter, a gravel layer, and a fine filter are set in the bearing frame, which can filter the seepage water well and prevent foreign particles from entering the water channel and causing blockage.

[0020] 3. The outer side of the main body of the tunnel is equipped with waterproof coating and waterproof cloth to improve its own waterproof performance.

[0021] 4. The main body of the tunnel is made of side panels and base panels, which is simple to construct. The U-shaped rubber sheets at the joints can improve its sealing. The triangular plates and X-shaped reinforcement plates installed inside the main body of the tunnel can improve its strength and compressive stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment provided by the utility model;

[0023] Figure 2 This is a schematic diagram of the connecting pipe installation structure of the embodiment provided by the utility model;

[0024] Figure 3 This is a schematic diagram of the X-shaped reinforcement plate structure of an embodiment provided by the utility model;

[0025] Figure 4 yes Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 5 yes Figure 1 The enlarged structural diagram at B in the middle;

[0027] In the figure, 1. the main body of the pipe gallery; 1-1. the base plate; 1-2. the side plate; 1-3. the U-shaped rubber sheet; 1-4. the U-shaped plate; 1-5. the triangular plate; 1-6. the X-shaped reinforcing plate; 1-7. the T-shaped plate; 2. the outer frame; 2-1. the upper U-shaped frame; 2-2. the lower U-shaped frame; 2-3. the plug-in block; 2-4. the slot; 3. the base; 4. the bearing frame unit; 4-1. the bearing frame body; 4-2. the gravel layer; 4-3. the coarse filter screen; 4-4. the fine filter screen; 5. the pavement layer; 5-1. the stone filling layer; 5-2. the soil layer; 6. the first water channel unit; 6-1. the water guide hole; 6-2. the water diversion trough; 7. the second water channel unit; 7-1. the flow channel; 8. the third water channel unit; 8-1. the drainage channel; 9. the connecting pipe; 10. the waterproof coating; 11. the waterproof cloth. DETAILED DESCRIPTION

[0028] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0029] Reference Figure 1 to Figure 5 As shown, the utility model provides a comprehensive waterproof structure for urban pipe corridors.

[0030] Example 1

[0031] It includes an outer frame 2 covered on the outside of the pipe gallery body 1, a base 3 arranged at the bottom of the outer frame, a bearing frame unit 4 installed on the top of the outer frame, a paving layer 5 arranged on the top and side of the bearing frame, and a water system arranged between the bearing frame unit, the outer frame, and the base; the water system is connected to the external municipal pipeline network, and the water system includes a first water unit 6 arranged in the bearing frame unit and used to collect rainwater located on the top of the bearing frame unit, a second water unit 7 arranged on the side wall of the outer frame, and a third water unit 8 connected to the external municipal pipeline network, and the second water unit is connected between the first water unit and the third water unit.

[0032] In this embodiment, the first water channel unit disposed on the top of the load-bearing frame unit is used to collect rainwater on the top of the pipe gallery body; the second water channel unit disposed on the side of the outer frame is used as a drainage channel to gather the rainwater collected by the first water channel unit from the top of the pipe gallery body to the bottom of the pipe gallery body through the drainage channel; the third water channel unit disposed in the base collects the rainwater gathered under the pipe gallery and discharges it to the external municipal pipe network. Based on the above measures, the collection, drainage and discharge of precipitation in the top area of ​​the pipe gallery are realized, thereby improving the waterproof ability of the pipe gallery body.

[0033] In Example 1, the bearing frame unit includes a bearing frame body 4-1 and a gravel layer 4-2. The bearing frame body adopts a coverless box structure, and gravel is filled in the box structure to form a gravel layer; the first water path unit includes a water guide hole 6-1 and a water diversion groove 6-2 arranged in the bearing frame body, and multiple groups of water guide holes are arranged in parallel and at intervals at the bottom of the bearing frame box body, and each group of water guide holes is composed of a number of vertically arranged water guide holes; a water diversion groove is provided at the bottom of each group of water guide holes, the top of the water guide hole is connected to the inner side of the bearing frame box body, and the bottom of the water guide hole is connected to the water diversion groove; the water diversion groove is connected to the second water path unit.

[0034] In this embodiment, rainwater that penetrates from the pavement layer to the bearing frame unit is first filtered through the gravel layer, then flows into the water guide hole, then gathers into the water guide groove, and finally enters the second water channel unit. In this application, there are multiple arrangements of the water guide hole and the water guide groove, such as the water guide hole can be arranged at a certain angle; the water guide groove can also be arranged perpendicular to the side of the box body, or at a certain acute angle.

[0035] Example 2

[0036] The structure and principle of Example 2 are similar to those of Example 1, except that the bearing frame unit further includes a coarse filter 4-3 and a fine filter 4-4; the coarse filter is installed above the gravel layer, and the fine filter is installed below the gravel layer. The coarse filter at the top of the gravel layer and the fine filter at the bottom can filter the seepage water well, preventing foreign particles from entering the water channel and causing blockage.

[0037] Example 3

[0038] The structure and principle of Example 3 are similar to those of Examples 1-2, except that: a preferred structural form of the outer frame is provided. Specifically, the outer frame includes an upper U-shaped frame 2-1 and a lower U-shaped frame 2-2, and the sizes of the upper and lower U-shaped frames match the sizes of the main body of the pipe gallery; the lower U-shaped frame is placed on the base, the main body of the pipe gallery is placed in the lower U-shaped frame, the upper U-shaped frame is buckled on the main body of the pipe gallery, and the bearing frame unit is placed on the upper U-shaped block frame; matching plug blocks 2-3 and slots 2-4 are provided on the upper U-shaped frame and the lower U-shaped frame, respectively, and the connection between the upper and lower U-shaped frames is achieved by connecting the plug blocks and the pins; the design of the plug blocks and the slots is to facilitate the positioning connection of the upper U-shaped frame and the lower U-shaped frame and improve stability.

[0039] The second water channel unit includes a flow channel 7-1, which is divided into an upper half and a lower half. The upper half of the flow channel is arranged in an upper U-shaped frame, and the lower half of the flow channel is arranged in a lower U-shaped frame; the upper half and the lower half of the same flow channel are aligned at the connection between the upper and lower U-shaped frames, and the top of the upper half of each flow channel is connected to a water diversion trough.

[0040] In Embodiment 3, the flow channels are distributed on both sides or one side of the outer frame; the flow channels are arranged vertically or obliquely; preferably, several flow channels are arranged in parallel.

[0041] In Example 3, a groove is provided at the top of the base, and the bottom end of the lower U-shaped frame is inserted into the inner side of the groove; the third water channel unit includes a drainage channel 8-1, which is arranged along the length direction inside the base; the bottom connections of all flow channels are connected to the drainage channel, and the drainage channel is connected to the external municipal pipeline network.

[0042] In this embodiment, the drainage channel on the base is provided to discharge the water flowing into the flow channel to achieve the function of drainage and prevent the water from being discharged at the bottom of the lower U-shaped frame, which may cause the soil to become loose. The drainage channel can adopt a tubular structure as shown in the figure, or a groove structure.

[0043] Example 4

[0044] The structure and principle of Example 4 are similar to those of Example 3, except that the water system also includes a connecting pipe 9; the connecting pipe is connected between the water diversion trough and the flow channel, between the upper half and the lower half of the flow channel, and between the lower half of the flow channel and the drainage channel, and the connecting pipe is fixed to the bottom of the supporting frame body or the top of the upper U-shaped frame, the bottom of the upper U-shaped frame or the top of the lower U-shaped frame, and the bottom of the lower U-shaped frame or the base, and the connecting pipe protrudes from the fixed component, and the protruding part extends into the water diversion trough, the flow channel or the drainage channel.

[0045] In the embodiment shown in the figure, connecting pipes are arranged at the top and bottom of the upper U-shaped frame and at the bottom of the lower U-shaped frame, and the protruding parts are placed in the water diversion trough, the lower half of the flow channel, and the drain channel. Preferably, the protruding part of the connecting pipe faces downward, which can better prevent rainwater from flowing out of the water diversion trough or the upper half of the flow channel. In addition, if the drain channel adopts a trough structure, a connecting pipe may not be used between the drain channel and the connecting pipe. The function of the connecting pipe is to achieve effective connection of the water system. If only the water diversion trough and the flow channel, the upper half of the flow channel and the lower half of the flow channel, and the lower half of the flow channel and the drain channel are spliced, there may be gaps, causing water to seep out from the edges of the gaps, causing water accumulation.

[0046] In this embodiment, rainwater that infiltrates the soil layer above the stone filling layer will be filtered through the gravel layer and the water guide holes into the water diversion trough, and then flow into the flow channels in the upper U-shaped frame and the lower U-shaped frame through the connecting pipe at the bottom of the water diversion trough, and converge downward from the flow channel into the water diversion channel, and finally discharged into the municipal pipe network, thereby preventing water accumulation around the main body of the pipe gallery and achieving a waterproof effect.

[0047] In embodiments 1-4, the main body of the pipe gallery includes a base plate 1-1 symmetrically arranged up and down and side plates 1-2 symmetrically arranged left and right, and a rectangular frame structure formed by the base plate and the side plates; both ends of the side of the base plate are provided with U-shaped grooves, and the inner wall surface of the U-shaped groove is fitted with a U-shaped rubber sheet 1-3, and the top and bottom ends of the side plates are fixed with U-shaped plates 1-4, and the U-shaped plates are inserted inside the U-shaped rubber sheets; the U-shaped plates and U-shaped rubber sheets are designed to improve the sealing of the joints between the side plates and the base plate. In order to further improve the waterproof ability of the main body of the pipe gallery itself, so that water will not easily penetrate into the interior, thereby comprehensively improving its waterproof ability; the outer wall surface of the main body of the pipe gallery is coated with a waterproof coating 10, and the outer side of the waterproof coating is wrapped and covered with multiple layers of waterproof cloth 11.

[0048] In embodiments 1-4, triangular plates 1-5 are provided at the four corners of the inner side of the pipe gallery body, and a plurality of X-shaped reinforcing plates 1-6 are installed between the upper and lower triangular plates on the same side, and T-shaped plates 1-7 are fixedly connected to both sides of the triangular plates. A plurality of T-shaped grooves are correspondingly provided around the inner side of the pipe gallery body 1, and the T-shaped plates are slidably inserted into the T-shaped grooves. The triangular plates and X-shaped reinforcing plates can improve the overall stability and compressive strength of the pipe gallery body 1.

[0049] In embodiments 1-4, the paving layer includes a stone filling layer 5-1 and a soil layer 5-2. The stone filling layer is laid on top of the bearing frame unit, and the soil layer is located above the stone filling layer and outside the outer frame and the bearing frame unit.

[0050] The working principle of this utility model:

[0051] The waterproof performance of the main body of the tunnel is reflected in that its exterior is coated with a waterproof coating and wrapped with a waterproof cloth, which can improve the waterproof performance of its main body. At the same time, the main body of the tunnel is spliced ​​with side panels and base plates, which can be prefabricated and installed in a simple manner; its internal structure can improve its strength and stability through triangular plates and X-shaped reinforcement plates. The utility model shows the basic connection method. In actual construction, welding or other methods of strengthening the connection can be carried out according to construction needs. When the top soil layer seeps water, the water will pass through the stone filling layer and enter the coarse filter, gravel layer and fine filter in turn to be filtered, isolating impurities in the water; then, the water flows through the water guide hole into the water diversion trough in the bearing frame, and is discharged into the flow channel in the upper U-shaped frame and the lower U-shaped frame through the connecting pipe, and finally discharged from the drain pipe, thereby achieving the drainage effect of the water flow and preventing water accumulation around the main body of the tunnel.

[0052] The above are only preferred embodiments of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of patent application of the present invention still fall within the protection scope of the present invention.

Claims

1. The comprehensive waterproof structure of the urban pipe gallery is characterized by: It includes an outer frame body covered on the outside of the pipe gallery body, a base provided at the bottom of the outer frame body, a bearing frame unit installed on the top of the outer frame body, a paving layer provided on the top and side of the bearing frame, and a water channel system provided between the bearing frame unit, the outer frame body, and the base; the water channel system is connected to an external municipal pipe network, and the water channel system includes a first water channel unit provided in the bearing frame unit and used to collect rainwater located on the top of the bearing frame unit, a second water channel unit provided on the side wall of the outer frame body, and a third water channel unit connected to the external municipal pipe network, and the second water channel unit is connected between the first water channel unit and the third water channel unit.

2. The comprehensive waterproof structure of the urban pipe gallery according to claim 1 is characterized in that: The bearing frame unit includes a bearing frame body and a gravel layer. The bearing frame body adopts a coverless box structure, and gravel is filled in the box structure to form a gravel layer. The first water path unit includes water guide holes and water diversion grooves arranged in the bearing frame body. Multiple groups of water guide holes are arranged in parallel and at intervals at the bottom of the bearing frame box body, and each group of water guide holes is composed of a number of vertically arranged water guide holes. A water diversion groove is provided at the bottom of each group of water guide holes, the top of the water guide hole is connected to the inner side of the bearing frame box body, and the bottom of the water guide hole is connected to the water diversion groove; the water diversion groove is connected to the second water path unit.

3. The comprehensive waterproof structure of the urban pipe gallery according to claim 2 is characterized in that: The bearing frame unit also includes a coarse filter screen and a fine filter screen; the coarse filter screen is installed above the gravel layer, and the fine filter screen is installed below the gravel layer.

4. The comprehensive waterproof structure of the urban pipe gallery according to claim 2 or 3, characterized in that: The outer frame includes an upper U-shaped frame and a lower U-shaped frame, and the sizes of the upper and lower U-shaped frames match the sizes of the main body of the pipe gallery; the lower U-shaped frame is placed on the base, the main body of the pipe gallery is placed in the lower U-shaped frame, the upper U-shaped frame is buckled on the main body of the pipe gallery, and the bearing frame unit is placed on the upper U-shaped block frame; matching plug blocks and slots are respectively provided on the upper U-shaped frame and the lower U-shaped frame, and the connection between the upper and lower U-shaped frames is realized by connecting the plug blocks and the latches; The second water channel unit includes a flow channel, which is divided into an upper half and a lower half. The upper half of the flow channel is arranged in an upper U-shaped frame, and the lower half of the flow channel is arranged in a lower U-shaped frame; the upper half and the lower half of the same flow channel are aligned at the connection between the upper and lower U-shaped frames, and the top of the upper half of each flow channel is connected to a water diversion trough.

5. The comprehensive waterproof structure of the urban pipe gallery according to claim 4 is characterized in that: The flow channels are distributed on both sides or one side of the outer frame; the flow channels are arranged vertically or obliquely; and a plurality of flow channels are arranged in parallel.

6. The comprehensive waterproof structure of the urban pipe gallery according to claim 4 is characterized in that: A groove is provided at the top of the base, and the bottom end of the lower U-shaped frame is inserted into the inner side of the groove; the third water channel unit includes a drainage channel, which is arranged along the length direction inside the base; the bottom connections of all flow channels are connected to the drainage channel, and the drainage channel is connected to the external municipal pipe network.

7. The comprehensive waterproof structure of the urban pipe gallery according to claim 6 is characterized by: The water system also includes a connecting pipe; the connecting pipe is connected between the water diversion trough and the flow channel, between the upper and lower halves of the flow channel, and between the lower half of the flow channel and the drainage channel. The connecting pipe is fixed to the bottom of the supporting frame body or the top of the upper U-shaped frame, the bottom of the upper U-shaped frame or the top of the lower U-shaped frame, and the bottom of the lower U-shaped frame or the base, and the connecting pipe protrudes from the fixed component, and the protruding part extends into the water diversion trough, the flow channel or the drainage channel.

8. The comprehensive waterproof structure of the urban pipe gallery according to claim 1 is characterized by: The main body of the tunnel includes a base plate symmetrically arranged up and down and side plates symmetrically arranged left and right, and the base plate and the side plates form a rectangular frame structure; U-shaped grooves are opened at both ends of the side of the base plate, and U-shaped rubber sheets are fitted and installed on the inner wall surface of the U-shaped grooves, and U-shaped plates are fixedly connected to the top and bottom ends of the side plates, and the U-shaped plates are inserted into the inner side of the U-shaped rubber sheets; the outer wall surface of the tunnel main body is coated with a waterproof coating, and the outer side of the waterproof coating is wrapped and covered with multiple layers of waterproof cloth.

9. The comprehensive waterproof structure of the urban pipe gallery according to claim 8 is characterized in that: Triangular plates are provided at the four corners of the inner side of the main body of the tunnel, and multiple X-shaped reinforcement plates are installed between the upper and lower triangular plates on the same side. T-shaped plates are fixedly connected to both sides of the triangular plates. Multiple T-shaped slots are correspondingly opened around the inner side of the main body of the tunnel, and the T-shaped plates are slidably inserted into the T-shaped slots.

10. The comprehensive waterproof structure of the urban pipe gallery according to claim 1 is characterized by: The paving layer includes a stone filling layer and a soil layer. The stone filling layer is laid on the top of the bearing frame unit, and the soil layer is located on the top of the stone filling layer and outside the outer frame and the bearing frame unit.

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