CN213417865U

CN213417865U - Construction structure for drainage and water isolation of red board rock stratum

Info

Publication number: CN213417865U
Application number: CN202022137930.5U
Authority: CN
Inventors: 闫鹏程; 史智伟; 魏伟; 潘有旺; 杨金龙
Original assignee: Gansu Cib Construction Ltd
Current assignee: Gansu Cib Construction Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-06-11
Anticipated expiration: 2030-09-25

Abstract

The utility model belongs to the technical field of the foundation ditch falls drainage engineering, a construction structures that is used for red slate rock stratum to fall drainage, water proof is disclosed to solve the problem that exists in the prior art foundation ditch falls drainage, this structure includes the escape canal at red slate mud layer excavation, and the waterproof layer has all been laid to the side and the bottom surface in escape canal, is equipped with the filter material in the escape canal, and the water barrier has been laid to the top surface in escape canal, and the concrete cushion has been laid to the top surface of water barrier. The utility model can effectively reduce the expansion of underground space, increase the utilization rate of the upper surface space of the drainage ditch, and reduce the earth excavation and outward transportation; the water permeability of the drainage ditch can be increased after the pebble filter material with good grading is replaced and filled; the utility model has the advantages of prevented the bed of mud and pebble bed interface rivers scattered and groundwater to the soaking of ground bed mudstone, the drainage ditch surface covers the plastic sheeting and has blockked that bedding concrete mud flows into the filter material of changing and filling, has avoided the filter material hole to block up, and can prevent that the drainage ditch water level from upwelling, avoids the corruption of humid environment to underground components.

Description

Construction structure for drainage and water isolation of red board rock stratum

Technical Field

The utility model relates to a drainage engineering technical field falls in the foundation ditch, concretely relates to a construction structures that is used for red board rock stratum to fall drainage, water proof.

Background

In recent years, with the market economy being active, the construction industry has been vigorously developed, and the development and utilization of urban underground spaces have become an inevitable trend. However, underground water has great influence on foundation pit construction, the drainage of the foundation pit is very important, and deep foundation pits in northwest areas are generally accompanied with drainage and water-resisting construction of mud rock layers. Under the condition that the existing urban land is short, part of projects are to meet the requirements of foundation pit dewatering and drainage, the foundation pit has to be expanded outwards and then the intercepting ditch is excavated, so that the earth excavation and transportation amount and the auxiliary land area are increased, and the land utilization rate is reduced. On the other hand, the underground water at the interface of the shale layer and the pebble layer flows disorderly, so that the foundation construction is greatly influenced, and the construction difficulty is increased; in addition, the mud-rock layer has poor precipitation effect, if water is not timely discharged in a organized manner, the mud-rock layer is soaked by underground water for a long time, the bearing capacity of the foundation is seriously reduced, and the technical problem cannot be solved in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that exists in the drainage falls in the prior art foundation ditch, provide a simple structure, can effectively the drainage be used for red board rock stratum to fall drainage, water proof construction structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a construction structures that is used for red slate rock stratum to fall drainage, water proof, includes the escape canal of excavating at red slate mud layer, and the waterproof layer has all been laid to the side and the bottom surface of escape canal, is equipped with the filter material in the escape canal, and the water barrier has been laid to the top surface of escape canal, and the concrete cushion has been laid to the top surface of water barrier.

Furthermore, the waterproof layer comprises a straw curtain paved on the side surface and the bottom surface of the drainage ditch, a dense mesh net is arranged on the inner side of the straw curtain, and a filter material is arranged on the inner side of the dense mesh net.

Furthermore, the top of the drainage ditch is provided with a slope surface of 10-15 degrees.

Furthermore, the bottom surface of the drainage ditch is provided with a slope of 3-5 degrees.

Further, the grass curtain is a rear grass curtain of 5 cm.

Furthermore, the filter material is a well-graded pebble filter material with the grain diameter of 10-30 mm.

Further, the dense mesh network is a 2000-mesh dense mesh network.

Further, the concrete pad was a C20 concrete pad 10cm thick.

Further, the water-proof layer is plastic cloth.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses a drainage ditch at red slate mud layer excavation to lay the waterproof layer in the side of drainage ditch and bottom surface, the filter material is covered with in the drainage ditch, will effectively reduce the expansion of underground space, increase the utilization ratio of drainage ditch upper surface space (build brick bed film etc.), reduce earthwork excavation and outward transport; and the water permeability of the drainage ditch can be increased after the pebble filter material with good grading is replaced and filled.

The bottom surface of the drainage ditch of the utility model is always lower than the bottom surface of the foundation by about 300mm, and water is drained to the water collecting well after being introduced into the drainage ditch, so that the water flow scattering of the joint surface of the mudstone layer and the pebble layer and the soaking of underground water to the mudstone of the foundation are prevented; the plastic cloth covers the surface of the drainage ditch to prevent the cushion concrete slurry from flowing into the exchanged and filled filter material, so that the pore blockage of the filter material is avoided, the water level of the drainage ditch can be prevented from overflowing, and the corrosion of a damp environment to an underground component is avoided.

The utility model discloses the top in escape canal is equipped with 10-15 domatic for the concrete cushion at top is stable. The bottom surface of the drainage ditch is provided with a slope of 3-5 degrees, so that water can be smoothly drained to the water collecting well.

Drawings

Fig. 1 is the schematic view of the utility model discloses escape canal.

Fig. 2 is a schematic structural diagram of the present invention.

The reference numerals have the following meanings: 1. a red slate mud layer; 2. filtering the material; 3. a straw curtain; 4. a dense mesh net; 5. a water barrier layer; 6. a concrete cushion; 7. a slope surface; 8. and (7) a drainage ditch.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1-2, a construction structure for drainage and water insulation of a red slate rock stratum comprises a drainage ditch 8 dug in the red slate mud layer 1, wherein the top of the drainage ditch 8 is provided with a slope 7 with an angle of 10-15 degrees. The bottom surface of the drainage ditch 8 is provided with a slope of 3-5 degrees. Waterproof layers are paved on the side face and the bottom face of the drainage ditch 8, filter materials 2 are installed in the drainage ditch 8, a water-resisting layer 5 is paved on the top face of the drainage ditch 8, and the water-resisting layer 5 is made of plastic cloth. The top surface of water barrier 5 has laid concrete cushion 6, and concrete cushion 6 is C20 concrete cushion. The waterproof layer comprises a grass curtain 3 paved on the side surface and the bottom surface of the drainage ditch 8, and the grass curtain 3 is a rear grass curtain of 5 cm. The inner side of the straw curtain 3 is provided with a dense mesh net 4, and the dense mesh net 4 is a 2000-mesh dense mesh net. The inner side of the dense mesh net 4 is provided with a filter material 2, and the filter material 2 is a well-graded pebble filter material with the grain diameter of 10-30 mm.

Firstly, a drainage ditch 8 with the thickness of 400mm multiplied by 400mm (the depth is multiplied by the width) is excavated, a thick grass curtain 3 with the thickness of 5cm is paved on the vertical surface and the bottom surface of the drainage ditch 8, a layer of dense mesh 4 is paved on the grass curtain 3, then well-graded pebble filter material 2 is filled, a layer of plastic cloth is paved on the filter material 2 after the filter material is filled and leveled, and then a C20 concrete cushion layer 6 with the thickness of 10cm is poured on the plastic cloth.

Claims

1. The utility model provides a be used for red board rock stratum to descend drainage, water proof construction structures, characterized by: the water-proof concrete floor comprises a drainage ditch (8) excavated in a red slate mud layer (1), waterproof layers are paved on the side surface and the bottom surface of the drainage ditch (8), filter materials (2) are installed in the drainage ditch (8), a water-proof layer (5) is paved on the top surface of the drainage ditch (8), and a concrete cushion layer (6) is paved on the top surface of the water-proof layer (5).

2. The construction structure for drainage and water insulation of the red slate layer according to claim 1, wherein: the waterproof layer comprises a grass curtain (3) paved on the side surface and the bottom surface of the drainage ditch (8), a dense mesh net (4) is arranged on the inner side of the grass curtain (3), and a filter material (2) is arranged on the inner side of the dense mesh net (4).

3. The construction structure for drainage and water insulation of the red slate layer according to claim 1 or 2, wherein: the top of the drainage ditch (8) is provided with a slope (7) of 10-15 degrees.

4. The construction structure for drainage and water insulation of the red slate layer according to claim 3, wherein: the bottom surface of the drainage ditch (8) is provided with a slope of 3-5 degrees.

5. The construction structure for drainage and water insulation of the red slate layer according to claim 2, wherein: the straw curtain (3) is a rear straw curtain of 5 cm.

6. The construction structure for drainage and water insulation of the red slate layer according to claim 5, wherein: the filter material (2) is a pebble filter material with the particle size of 10-30 mm.

7. The construction structure for drainage and water insulation of the red slate layer according to claim 2, wherein: the dense mesh network (4) is a 2000-mesh dense mesh network.

8. The construction structure for drainage and water insulation of the red slate layer according to claim 1, wherein: the concrete cushion (6) is a C20 concrete cushion with the thickness of 10 cm.

9. The construction structure for drainage and water insulation of the red slate layer according to claim 1, wherein: the waterproof layer (5) is plastic cloth.