CN215669573U - Waterproof isolation structure for laying underground cable and PE (polyethylene) guide pipe - Google Patents
Waterproof isolation structure for laying underground cable and PE (polyethylene) guide pipe Download PDFInfo
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- CN215669573U CN215669573U CN202121503216.1U CN202121503216U CN215669573U CN 215669573 U CN215669573 U CN 215669573U CN 202121503216 U CN202121503216 U CN 202121503216U CN 215669573 U CN215669573 U CN 215669573U
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- 238000002955 isolation Methods 0.000 title claims abstract description 123
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 85
- -1 polyethylene Polymers 0.000 title claims abstract description 8
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000010410 layer Substances 0.000 claims description 116
- 239000002689 soil Substances 0.000 claims description 33
- 239000004567 concrete Substances 0.000 claims description 22
- 239000004576 sand Substances 0.000 claims description 22
- 239000011150 reinforced concrete Substances 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 238000011049 filling Methods 0.000 claims description 13
- 239000002352 surface water Substances 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 abstract 1
- 101150054854 POU1F1 gene Proteins 0.000 description 11
- 238000010276 construction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 230000002093 peripheral effect Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000004540 pour-on Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Abstract
The utility model discloses a waterproof isolation structure for laying underground cables and PE (polyethylene) guide pipes. Waterproof isolation box is middle high low chevron shape domatic structure in both sides, and both sides extend outside the foundation ditch, and ponding in the waterproof isolation box can be followed the interior bottom surface outflow box of waterproof isolation box outside, and then in discharging the original drainage system outside the foundation ditch, prevents that ponding in the waterproof isolation box from flowing into underground foundation ditch and backfilling lays the ditch in, further ensures space environment in the waterproof isolation box keeps dry. The high-voltage cable and the PE guide pipe are laid in the waterproof isolation box body in a herringbone mode, accumulated water in the PE guide pipe can flow into cable wells on two sides outside the foundation pit after flowing out of the inner wall of the guide pipe, and the space environment in the PE guide pipe is kept dry.
Description
Technical Field
The utility model relates to the technical field of underground cable laying, waterproofing and drainage construction, in particular to a waterproof isolation structure for laying underground cables and PE (polyethylene) guide pipes.
Background
The power cable laying usually includes various laying modes such as direct-buried laying, cable trench laying, overhead laying, pipe-through laying, underwater laying and the like. In the construction of urban construction engineering, 4 underground YJV22-8.7/15kV-3 x 300mm often need to be laid2The 10kV flexible pipe type high-voltage cables are arranged in a PE (polyethylene) cable protection conduit with DN166mm multiplied by 8.0mm in a penetrating mode and stretch across the top of the underground structure foundation pit. And after the construction of the underground main structure is finished, backfilling and laying construction needs to be carried out on the originally laid 10kV hose type high-voltage cable and the PE guide pipe.
When backfilling and applying facilities are carried out, the prior art adopts more methods: directly backfilling sandy soil or fine soil above and below the high-voltage cable and the PE conduit; or, constructing a sand cushion layer at the bottom of the high-voltage cable and the PE guide pipe, filling stone chips around the sand cushion layer, constructing a concrete cushion layer, a waterproof layer and a reinforced concrete cover plate at the top of the sand cushion layer, and backfilling and tamping soil on the top of the reinforced concrete cover plate to be flush with the ground. However, the methods do not completely solve the problems that surface water on the original ground permeates into backfill soil and a backfill laying ditch and water is easy to accumulate in a ditch of a backfill laying high-voltage cable and a PE (polyethylene) conduit and cannot be discharged out of the backfill laying ditch, and the high-voltage cable and the PE conduit are in a long-term soaking state, so that potential electric leakage and electric shock safety risks are brought to the underground structure during operation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a waterproof isolation structure for laying underground cables and PE (polyethylene) guide pipes, which aims to solve the technical problems that surface water on the original ground easily permeates into a backfill soil layer and a backfill laying ditch, water is easily accumulated in the backfill laying ditch, and the accumulated water cannot be discharged in the existing backfill laying mode.
According to one aspect of the utility model, the waterproof isolation structure for laying the underground cable and the PE conduit comprises a backfill soil layer and a waterproof isolation box body, wherein the waterproof isolation box body is positioned above an underground main body structure in a foundation pit, two sides of the waterproof isolation box body extend out of the foundation pit, the backfill soil layer is filled around the waterproof isolation box body, the top surface of the backfill soil layer positioned below the waterproof isolation box body and the waterproof isolation box body are both herringbone slope surface structures with high middle parts and low two sides, and the high-voltage cable and the PE conduit are installed in the waterproof isolation box body and laid in a herringbone mode.
Further, the waterproof isolation box body includes waterproof isolation layer, locator and drainage filling layer, the locator is used for supporting high tension cable and PE pipe, and the interval is provided with multiseriate bearing structure on the direction of laying of high tension cable and PE pipe, and every row of bearing structure includes that four set up side by side the locator, in order to constitute the skeleton texture of waterproof isolation box body, the drainage filling layer is filled around the locator in order to improve the bulk rigidity of waterproof isolation box body, the waterproof isolation layer parcel is in the periphery of drainage filling layer and locator is in order to prevent that the earth's surface infiltration from getting into, the top surface and the bottom surface of locator waterproof isolation layer all set up to the domatic of being parallel to each other.
Furthermore, the top surface of locator has seted up U type groove, high tension cable and PE pipe are installed promptly in the U type groove, the bottom surface of locator is seted up at least one and is crossed the water hole.
Further, the locator is a C30 reinforced concrete prefabricated block.
Further, the distance from the bottom surface of the U-shaped groove to the bottom surface of the positioner is 100-150 mm.
Further, the drainage filling layer comprises a pebble permeable layer and a fine sand layer, the pebble permeable layer is filled in a cavity between the bottoms of the high-voltage cable and the PE conduit and the waterproof isolation layer below the bottom of the high-voltage cable and the PE conduit, and the fine sand layer is filled on the pebble permeable layer and filled to the top surface of the positioner so as to completely cover the high-voltage cable and the PE conduit.
Further, still include concrete cushion and waterproof coating, the concrete cushion is pour on the top surface of the crown beam in backfill soil layer and the foundation ditch, waterproof coating is located the concrete cushion with between the waterproof isolation layer, concrete cushion and waterproof coating are middle high low chevron shape slope surface structure in both sides.
And the water guide pipes are respectively arranged on two outer sides of the foundation pit and are used for guiding water flowing out of the concrete cushion layer and the waterproof coating layer into an original drainage system.
The waterproof isolation box further comprises a sand cushion layer and a reinforced concrete protection plate which are arranged on the top surface of the waterproof isolation box body, wherein the reinforced concrete protection plate is positioned between the sand cushion layer and the backfill soil layer, and the reinforced concrete protection plate is of a herringbone slope structure with a high middle part and two low sides.
Furthermore, the top surface of the backfill soil layer above the waterproof isolation box body is a herringbone slope structure with a high middle part and a low periphery, and the waterproof isolation structure further comprises a drainage ditch arranged on the outer side of the top surface of the foundation pit and used for guiding water flowing down along the top surface of the backfill soil layer into an original drainage system.
The utility model has the following effects:
according to the waterproof isolation structure for laying the underground cable and the PE conduit, the high-voltage cable and the PE conduit are installed by arranging the waterproof isolation box body, so that surface seepage water can be prevented from entering the waterproof isolation box body, and the space environment where the high-voltage cable and the PE conduit are located is kept dry. And, waterproof isolation box is middle high low chevron shape domatic structure in both sides, and both sides extend outside the foundation ditch, and ponding in the waterproof isolation box can be followed the interior bottom surface of waterproof isolation box and flowed out outside the box, and then arrange into the original drainage system outside the foundation ditch, prevent that ponding in the waterproof isolation box from flowing into underground foundation ditch and backfill and lay in the ditch, further ensure the space environment in the waterproof isolation box keeps dry. In addition, the high-voltage cable and the PE guide pipe are laid in the waterproof isolation box body in a herringbone mode, accumulated water in the PE guide pipe can flow into cable wells on two sides outside the foundation pit after flowing out of the inner wall of the guide pipe, and the space environment in the PE guide pipe is kept dry. The waterproof isolation structure laid by the underground cable and the PE conduit can prevent surface seepage water from permeating into spaces where the high-voltage cable and the PE conduit are located on one hand, and can discharge accumulated water in the spaces where the high-voltage cable and the PE conduit are located on the other hand, so that the spaces where the high-voltage cable and the PE conduit are located are kept dry, and the safety accidents of electric leakage and electric shock of the high-voltage cable and the PE conduit due to long-term immersion in water are prevented.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural view of the underground cable and the waterproof isolation structure laid by the PE conduit according to the preferred embodiment of the present invention implemented in a foundation pit.
Fig. 2 is a schematic cross-sectional view taken along line I-I in fig. 1.
Fig. 3 is a schematic structural view of a positioner according to a preferred embodiment of the present invention.
Description of the reference numerals
1. A foundation pit; 2. high voltage cables and PE conduits; 3. a fender pile; 4. a crown beam; 5. a retaining wall; 6. A subterranean body; 7. a roof coating waterproof layer; 8. a root resist layer; 9. a fine stone concrete waterproof protective layer; 10. backfilling the soil layer; 11. a concrete cushion; 12. a water-resistant coating; 13. a waterproof isolation layer; 14. A positioner; 15. a drainage filling layer; 16. a water conduit; 17. a sand cushion layer; 18. a reinforced concrete protection plate; 19. a drainage ditch; 141. a U-shaped groove; 142. and a water through hole.
Detailed Description
The embodiments of the utility model will be described in detail below with reference to the accompanying drawings, but the utility model can be embodied in many different forms, which are defined and covered by the following description.
As shown in fig. 1 and 2, a preferred embodiment of the present invention provides a waterproof isolation structure for laying underground cables and PE conduits, which includes a backfill soil layer 10 and a waterproof isolation box body, wherein the waterproof isolation box body is located above an underground main structure in a foundation pit 1, two sides of the waterproof isolation box body extend out of the foundation pit 1, the backfill soil layer 10 is filled around the waterproof isolation box body, the top surface of the backfill soil layer 10 located below the waterproof isolation box body and the waterproof isolation box body are both of a herringbone slope structure with a high middle part and low two sides, and high-voltage cables and PE conduits 2 are installed in the waterproof isolation box body and laid in a herringbone manner. It can be understood that the underground main structure in the foundation pit 1 comprises fender piles 3, a crown beam 4, retaining walls 5, an underground main body 6, a roof coating waterproof layer 7, a root resistance layer 8 and a fine aggregate concrete waterproof protective layer 9, the fender piles 3 are arranged on two inner side walls of the foundation pit 1 and used for achieving a retaining effect, the crown beam 4 is arranged on the fender piles 3, and the retaining walls 5 are arranged on the crown beam 4. The underground main body 6 is located between the fender piles 3 on two sides, the top plate coating waterproof layer 7 is located on the top surface of the underground main body 6, the root resistance layer 8 is located on the top plate coating waterproof layer 7, and the fine aggregate concrete waterproof protective layer 9 is located on the root resistance layer 8. In the construction process of the underground structure, the construction of the waterproof isolation structure of the embodiment is carried out after the construction of the underground main body structure in the foundation pit 1 is completed. The slope of the two side slopes of the herringbone slope structure is preferably 1.5%, and of course, in other embodiments of the present invention, the slope may be set to other values, such as 2%, 1%, and the like. In addition, if the present invention is not specifically described, all the slope slopes of the herringbone slope structures are equal.
It can be understood that the waterproof isolation structure that underground cable and PE pipe laid of this embodiment installs high tension cable and PE pipe 2 through setting up waterproof isolation box, can prevent that the earth's surface infiltration from entering into waterproof isolation box in, ensures that the space environment that high tension cable and PE pipe 2 were located keeps dry. And, waterproof isolation box is middle high low chevron shape domatic structure in both sides, and both sides extend outside foundation ditch 1, and ponding in the waterproof isolation box can be followed the interior bottom surface of waterproof isolation box and flowed out outside the box, and then arrange into the original drainage system outside foundation ditch 1, prevent that ponding in the waterproof isolation box from flowing into underground foundation ditch 1 and backfill and lay the ditch in, further ensure the space environment in the waterproof isolation box keeps dry. In addition, the high-voltage cable and the PE guide pipe 2 are laid in the waterproof isolation box body in a herringbone mode, accumulated water in the PE guide pipe can flow out along the inner wall of the guide pipe and then flow into cable wells on two sides outside the foundation pit 1, and the space environment in the PE guide pipe is kept dry. The waterproof isolation structure laid by the underground cable and the PE conduit can prevent surface seepage water from permeating into the space where the high-voltage cable and the PE conduit 2 are located on one hand, and can discharge accumulated water in the space where the high-voltage cable and the PE conduit 2 are located on the other hand, so that the space where the high-voltage cable and the PE conduit 2 are located is kept dry, and the safety accidents of electric leakage and electric shock of the high-voltage cable and the PE conduit 2 caused by long-term immersion in water are prevented.
It can be understood that the waterproof isolation box body specifically includes waterproof isolation layer 13, locator 14 and drainage filling layer 15, locator 14 is used for supporting high tension cable and PE pipe 2, and the interval is provided with multiseriate bearing structure on high tension cable and PE pipe 2's the direction of laying, and is right high tension cable and PE pipe 2 carry out even support, and every bearing structure includes four and sets up side by side locator 14 can support four high tension cables and PE pipe 2 respectively, and multiseriate bearing structure constitutes the skeleton texture of waterproof isolation box body. Wherein the spacing between each column of support structures is 500 mm. The drainage packing layer 15 is filled around the retainer 14 to increase the overall rigidity of the waterproof insulation case. Waterproof isolation layer 13 parcel is in the periphery of drainage filling layer 15 and locator 14 is in order to prevent that the earth's surface infiltration from getting into in the waterproof isolation box. Moreover, the top surface and the bottom surface of the locator 14 and the waterproof isolation layer 13 are both provided with slopes parallel to each other, which is beneficial for the locator 14, the high-voltage cable and the PE conduit 2 to be stably installed on the waterproof isolation layer 13 at the bottom of the waterproof isolation box body, and is beneficial for the waterproof isolation layer 13 at the top of the waterproof isolation box body to form a herringbone slope. The drainage filling layer 15 comprises a pebble permeable layer and a fine sand layer, the pebble permeable layer is filled in a cavity between the bottom of the high-voltage cable and the PE conduit 2 and the waterproof isolation layer 13 below the pebble permeable layer, and the fine sand layer is filled on the pebble permeable layer and filled to the top surface of the positioner 14 so as to completely cover the high-voltage cable and the PE conduit 2. The waterproof isolation layer 13 is a waterproof coiled material, when the waterproof isolation box body is constructed, firstly the waterproof coiled material is laid on the top surface of the herringbone slope surface structure of the backfill soil layer 10, then a plurality of locators 14 are installed on the waterproof coiled material, then the waterproof coiled material is turned over by 90 degrees from the outer side to the inner side along the bottoms of the locators 14 to form a U-shaped shape, a water permeable layer formed by pebbles with the nominal single particle grade of 16-25 mm and the thickness of 50mm, large gaps and strong water permeability is filled in a cavity between the bottoms of the high-voltage cable and the PE conduit 2 and the waterproof coiled material, a fine sand layer with the compact thickness of 70mm is filled on the surface of the water permeable layer to support the bottoms of the high-voltage cable and the PE conduit 2, the fine sand layer is continuously filled to the top surface of the locators 14, the high-voltage cable and the PE conduit 2 are completely covered, finally the waterproof coiled material is turned over by 90 degrees from the outer side to the inner side along the tops of the locators 14, the top surface of the fine sand layer is completely covered in a shape like a Chinese character 'kou', so that the waterproof isolation layer 13 wraps the high-voltage cable, the PE conduit 2, the positioner 14, the pebble permeable layer and the fine sand layer to form a waterproof isolation box body.
It can be understood that, as shown in fig. 3, a U-shaped groove 141 is formed in the top surface of the locator 14, the high-voltage cable and the PE pipe 2 are installed in the U-shaped groove 141, and at least one water through hole 142 is formed in the bottom surface of the locator 14, so that accumulated water in the waterproof isolation box can flow freely. Preferably, the number of the water through holes 142 is two. In addition, the distance from the bottom surface of the U-shaped groove 141 to the bottom surface of the positioner 14 is 100 mm-150 mm, preferably 120mm, so that accumulated water in the waterproof isolation box can freely flow out of the waterproof isolation box through the pebble permeable layer, the fine sand layer and the surface of the waterproof roll material at the bottom, and the space environment in the waterproof isolation box is kept dry. The locator 14 is a C30 reinforced concrete precast block, the length, the width and the height of the locator are 350mm, 200mm and 350mm, the depth of the U-shaped groove 141 is 230mm, the width of the U-shaped groove is 180mm, the water passing holes 142 are semicircular holes with the radius of 50mm, and the interval between the two water passing holes 142 is 50 mm. In addition, the bottom surface of the U-shaped groove 141 is a slope surface, and the slope of the slope surface is consistent with the slope of the top surface of the locator 14, so that water accumulation in the U-shaped groove 141 is prevented. Namely, the slope of the top surface of the locator 14 is 1.5%, the bottom surface of the locator 14 is parallel to the top surface of the locator 14, which is beneficial to the installation stability of the locator 14, the high-voltage cable and the PE conduit 2 on the surface of the herringbone waterproof isolation layer 13, and is also beneficial to the top surface and the bottom surface of the constructed waterproof isolation box body to be 1.5% slope surfaces which are parallel to each other.
It can be understood that, as preferred, the waterproof isolation structure still includes concrete cushion 11 and waterproof coating 12, concrete cushion 11 is pour on backfill layer 10 and on the top surface of crown beam 4 in foundation ditch 1, brush on the surface of concrete cushion 11 twice cement base infiltration crystallization type waterproof coating forms waterproof coating 12, waterproof coating 12 is located between concrete cushion 11 and the waterproof isolation layer 13, concrete cushion 11 and waterproof coating 12 are middle high both sides low chevron shape slope surface structure. The surface seepage water outside the waterproof isolation box body and inside the backfill soil layer 10 can freely flow out of the outer edges of the top surfaces of the crown beams 4 at two sides through the herringbone slopes of the concrete cushion layer 11 and the waterproof coating layer 12, and the surface seepage water is prevented from continuously permeating into the backfill soil layer 10 below the waterproof isolation box body. Further preferably, the waterproof isolation structure further comprises water conduits 16 respectively arranged on two outer sides of the foundation pit 1, specifically arranged on the outer sides of the tops of the crown beams 4 on two sides, and used for guiding water flowing out of the concrete cushion 11 and the waterproof coating 12 into an original drainage system of the foundation pit 1.
It can be understood that, as a preferable mode, the waterproof isolation structure further comprises a sand cushion layer 17 and a reinforced concrete protection plate 18 which are arranged on the top surface of the waterproof isolation box body, the sand cushion layer 17 is positioned on the top surface of the waterproof isolation box body, the reinforced concrete protection plate 18 is positioned between the sand cushion layer 17 and the backfill soil layer 10 above the waterproof isolation box body, and the reinforced concrete protection plate 18 is a herringbone slope structure with a high middle part and two low sides. The two sides of the sand cushion layer 17 and the reinforced concrete protection plate 18 extend out of the foundation pit 1, and after the surface water seeps into the upper backfill soil layer 10, the surface water can freely flow into the original drainage system outside the foundation pit 1 along the slope surfaces of the two sides of the reinforced concrete protection plate 18, so that the surface water seeps into the waterproof isolation box body in the upper backfill soil layer 10.
In addition, as an optimization, the top surface of the backfill soil layer 10 above the waterproof isolation box body is also a herringbone slope structure with a high middle part and a low periphery, and the waterproof isolation structure further comprises a drainage ditch 19 arranged on the outer side of the top surface of the foundation pit 1 and used for guiding water flowing down along the top surface of the backfill soil layer 10 into an original drainage system. Surface water can be rapidly discharged into the peripheral drainage ditches 19 through the peripheral slopes of the backfill soil layer 10 of the herringbone slope structure on the upper layer, and then discharged into the original drainage system, so that the surface water is prevented from permeating into the backfill soil layer 10.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a waterproof isolation structure that underground cable and PE pipe laid, its characterized in that, includes backfill soil layer (10) and waterproof isolation box, waterproof isolation box is located the top of the secret major structure in foundation ditch (1), just outside the both sides of waterproof isolation box extend foundation ditch (1), backfill soil layer (10) are filled around waterproof isolation box, be located waterproof isolation box below the top surface of backfill soil layer (10) reaches waterproof isolation box is the low chevron shape domatic structure of high both sides in the middle of, and install high tension cable and PE pipe (2) just are the chevron shape and lay in the waterproof isolation box.
2. The waterproof isolation structure for laying underground cables and PE (polyethylene) pipes according to claim 1, wherein the waterproof isolation box comprises a waterproof isolation layer (13), a locator (14) and a drainage filling layer (15), the locator (14) is used for supporting the high-voltage cables and the PE pipes (2), a plurality of rows of support structures are arranged at intervals in the laying direction of the high-voltage cables and the PE pipes (2), each row of support structures comprises four locators (14) arranged side by side to form a skeleton structure of the waterproof isolation box, the drainage filling layer (15) is filled around the locator (14) to improve the overall rigidity of the waterproof isolation box, the waterproof isolation layer (13) is wrapped around the drainage filling layer (15) and the locator (14) to prevent ground surface water seepage, and the top surface and the bottom surface of the locator (14), The waterproof isolation layers (13) are all arranged into slope surfaces which are parallel to each other.
3. The waterproof isolation structure for laying underground cables and PE pipes according to claim 2, wherein the top surface of the locator (14) is provided with a U-shaped groove (141), the high-voltage cables and the PE pipes (2) are installed in the U-shaped groove (141), and the bottom surface of the locator (14) is provided with at least one water through hole (142).
4. A watertight isolation structure for underground cables and PE conduit laying according to claim 3, characterized in that said locator (14) is a prefabricated block of C30 reinforced concrete.
5. A watertight isolation structure for underground cable and PE conduit laying according to claim 3, wherein the distance from the bottom surface of said U-shaped groove (141) to the bottom surface of said locator (14) is 100mm to 150 mm.
6. The underground cable and PE pipe laying waterproof isolation structure according to claim 2, wherein the drainage filling layer (15) includes a pebble permeable layer filled in a cavity between the bottom of the high-voltage cable and PE pipe (2) and the waterproof isolation layer (13) below, and a fine sand layer filled on the pebble permeable layer and filled to the top surface of the retainer (14) to entirely cover the high-voltage cable and PE pipe (2).
7. The underground cable and PE conduit laid waterproof isolation structure according to claim 2, further comprising a concrete cushion layer (11) and a waterproof coating layer (12), wherein the concrete cushion layer (11) is poured on the backfill soil layer (10) and the top surface of the crown beam (4) in the foundation pit (1), the waterproof coating layer (12) is positioned between the concrete cushion layer (11) and the waterproof isolation layer (13), and the concrete cushion layer (11) and the waterproof coating layer (12) are both of a herringbone slope structure with a high middle part and two low sides.
8. The underground cable and PE conduit laying waterproof isolation structure according to claim 7, further comprising water pipes (16) respectively disposed at both outer sides of the foundation pit (1) for guiding water flowing out of the concrete pad (11) and the waterproof coating (12) into an existing drainage system.
9. The underground cable and PE conduit laying waterproof isolation structure according to any one of claims 1 to 8, further comprising a sand cushion layer (17) and a reinforced concrete protection plate (18) arranged on the top surface of the waterproof isolation box body, wherein the reinforced concrete protection plate (18) is positioned between the sand cushion layer (17) and the backfill soil layer (10), and the reinforced concrete protection plate (18) is a herringbone slope structure with a high middle part and two low sides.
10. The underground cable and PE conduit laid waterproof isolation structure as claimed in claim 1, wherein the top surface of the backfill soil layer (10) above the waterproof isolation box body is a herringbone slope structure with a high middle part and a low periphery, and the waterproof isolation structure further comprises a drainage ditch (19) arranged outside the top surface of the foundation pit (1) and used for guiding water flowing down along the top surface of the backfill soil layer (10) into an original drainage system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121503216.1U CN215669573U (en) | 2021-07-02 | 2021-07-02 | Waterproof isolation structure for laying underground cable and PE (polyethylene) guide pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121503216.1U CN215669573U (en) | 2021-07-02 | 2021-07-02 | Waterproof isolation structure for laying underground cable and PE (polyethylene) guide pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215669573U true CN215669573U (en) | 2022-01-28 |
Family
ID=79978617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121503216.1U Expired - Fee Related CN215669573U (en) | 2021-07-02 | 2021-07-02 | Waterproof isolation structure for laying underground cable and PE (polyethylene) guide pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215669573U (en) |
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2021
- 2021-07-02 CN CN202121503216.1U patent/CN215669573U/en not_active Expired - Fee Related
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