CN217537080U - Karst refuse dump foundation treatment structure - Google Patents

Abstract

The utility model discloses a karst refuse dump foundation treatment structure, including annular barricade one, annular barricade one encircles the hole of falling into water or disappears the hole and sets up, barricade one is encircleed outward and is provided with annular barricade two, barricade one forms the sump pit with barricade two, the well head interval on barricade two is equipped with a plurality of inclined inlet openings, the inlet opening is the low side towards the sump pit end, the lower part on barricade two is equipped with the apopore of slope, the apopore is high-end towards the sump pit end, the apopore low side is connected with the drainage french drain of slope, the low side of drainage french drain links to each other with the sewage collecting pit outside the refuse dump; the structure can avoid the pollution to the karst underground water and can not cause the karst to sink.

Description

Karst refuse dump foundation treatment structure

Technical Field

The utility model relates to a karst refuse dump, in particular to karst refuse dump ground handles structure.

Background

Karst (also called karst) is a general name of a soluble rock distribution area mainly containing carbonates, and water (particularly underground water) has a comprehensive geological effect mainly containing erosion on rocks and generates various phenomena. Carbonate rocks in China are widely distributed, particularly in southwest regions, surface karst depressions and troughs develop, when a dumping site is arranged in the karst depressions and the troughs, the karst depressions and the troughs often meet water falling holes or pits, and the karst collapse can be caused by failure of proper treatment measures, so that reasonable treatment measures must be taken to ensure the stability of karst foundations.

The field of the refuse dump in engineering construction can meet different shapes of water falling holes or pit elimination, the most common treatment measure at present is landfill and grouting reinforcement, but the treatment method is not suitable for the water falling holes or pit elimination communicated with underground rivers.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a karst refuse dump ground treatment structure can avoid the pollution to karst groundwater, can not cause the karst to sink again.

The utility model aims at realizing through the following technical scheme:

the utility model provides a karst refuse dump ground processing structure, includes annular barricade one, and annular barricade one encircles the hole of falling into water or the pit setting disappears, barricade one is encircleed outward and is provided with annular barricade two, barricade one forms the sump pit with two rooms of barricade, the well head interval on the barricade two is equipped with the inlet opening of a plurality of slopes, the inlet opening is the low side towards the sump pit end, the lower part on the barricade two is equipped with the apopore of slope, the apopore is high-end towards the sump pit end, the apopore low side meets with the drainage blind ditch of slope, the low side of drainage blind ditch links to each other with the sewage collecting pit in the refuse dump outside.

Furthermore, an impermeable material layer is arranged on one outer side of the retaining wall.

Further, the drainage french drain includes the ditch body, the ditch body forms on the waste of refuse dump, the bottom of ditch body is equipped with the prevention of seepage basis, and the middle part is filled with coarse grain material, coarse grain material top covers has the roof, there is the infiltration layer of outside-in one-way infiltration on ditch body both sides.

Further, the top plate is a grouted stone sheet top plate.

Further, the anti-seepage foundation is a reinforced concrete foundation.

Furthermore, the height of the top surface of the second retaining wall is higher than that of the waste dump and lower than that of the first retaining wall.

Furthermore, the high-end parcel of inlet opening has the geotechnological cloth that permeates water, the geotechnological cloth that permeates water peripheral hardware gravel reversed filter, and the discarded object upper berth in the refuse dump of gravel reversed filter bottom surface has the mortar layer.

Furthermore, the two ends of the drainage blind ditch are wrapped with permeable geotextiles.

And furthermore, the first retaining wall, the second retaining wall and the bottom of the water collecting well are all of reinforced concrete structures.

The utility model has the advantages that:

the utility model discloses a karst refuse dump ground treatment structure, barricade one intercepts refuse dump district water, keeps apart and protects the hole that falls into water or disappears the hole, and the sump pit is collected refuse dump district water and is arranged to the sewage collecting pit outside the refuse dump through the drainage french drain, has avoided refuse dump groundwater to get into the hole that falls into water or disappear the hole and pollute karst groundwater, has also avoided the refuse dump to seal simultaneously and has caused the karst subsidence that the interior karst space induces under positive, negative pressure; the structure is convenient for later observation and maintenance, and has simple structure and low cost.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the present invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, in which:

fig. 1 is a plan view of the utility model in use.

Fig. 2 is a schematic view of the arrangement of the first retaining wall and the second retaining wall in fig. 1.

Fig. 3 is a perspective view of the retaining wall in fig. 1.

Fig. 4 is a cross-sectional view of the retaining wall of fig. 1.

Fig. 5 is a perspective view of the retaining wall shown in fig. 1.

Fig. 6 is a cross-sectional view of the retaining wall of fig. 1.

FIG. 7 is a schematic view of the connection between the blind drain and the retaining wall in FIG. 1.

FIG. 8 is a sectional view of the drain blind ditch.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are presented for purposes of illustration only and are not intended to limit the scope of the present disclosure.

As shown in fig. 1-8, a karst soil-discharging field foundation treatment structure, which solves the karst problems of water falling hole or pit elimination and the like when a soil-discharging field is arranged in a karst depression or valley, comprises an annular reinforced concrete retaining wall I1, the annular retaining wall I1 is arranged around a water falling hole 5 or a pit elimination, the annular reinforced concrete retaining wall II 3 is arranged around the retaining wall I1, a water collecting well 2 is formed between the retaining wall I1 and the retaining wall II 3, the bottom of the water collecting well 2 is also of a reinforced concrete structure, a plurality of inclined water inlet holes 301 are arranged at intervals on the middle upper part of the retaining wall II 3, the water inlet holes 301 are arranged at the lower end towards the water collecting well 2, so that groundwater in the soil-discharging field can enter the water collecting well 2 from the water inlet holes 301, an inclined water outlet hole 302 is arranged at the lower end towards the water collecting well 2, the water outlet hole 302 is arranged at the upper end towards the water collecting well 2, so that water in the water collecting well 2 can be discharged from the water outlet hole 301, the lower end of the drainage blind ditch 4 is connected with a sewage collecting pool 9, the sewage collecting pool is arranged at the lower end of the drainage ditch 9, the sewage collecting pool is arranged at the lower end of the sewage collecting basin, and the sewage collecting pool side of the retaining wall is arranged at the sewage collecting pool side, and the sewage collecting pool side of the sewage collecting pool 9, the sewage collecting pool side, and the sewage collecting pool side of the sewage collecting pool.

The outer side of the first retaining wall 1 is provided with an impermeable material layer 101, so that the first retaining wall can be prevented from being permeated by sewage.

The drainage blind ditch 4 comprises a ditch body, the ditch body is formed on the waste of a refuse dump, the bottom of the ditch body is provided with an anti-seepage foundation 404, the middle part of the ditch body is filled with a coarse-grained material 403, a top plate 401 covers the coarse-grained material 403, two sides of the ditch body are provided with water seepage layers 10 for one-way water seepage from outside to inside, the water seepage layers 10 are one-way water-permeable geotextiles, namely, the underground water of the refuse dump on two sides of a side ditch can enter the drainage blind ditch 4 from the water seepage layers 10, and the purpose of arranging the top plate 401 is to prevent the waste from entering the coarse-grained material 403 to block the drainage blind ditch 4.

The roof 401 is a grouted stone slab.

The impermeable foundation 404 is a reinforced concrete foundation.

The top surface of the second retaining wall 3 is higher than the height of the waste of the refuse dump and lower than the height of the first retaining wall 1, and the top surface of the second retaining wall 3 is lower than the height of the first retaining wall 1 so as to avoid the problem that leachate of the refuse dump crosses the first retaining wall 1 to enter the water falling hole 5 or the pit elimination under extreme conditions and pollute karst groundwater.

The high-end parcel of inlet opening 301 has the geotechnological cloth 6 that permeates water, and the geotechnological cloth 6 that permeates water peripheral hardware gravel reversed filter 7, has laid the clay layer 8 on the discarded object of 7 bottom surfaces refuse dumps of gravel reversed filter, can avoid the discarded object to get into sump pit 2.

The two ends of the drainage blind ditch 4 are wrapped with the permeable geotextile 6, so that the waste can be prevented from entering the sewage collecting tank 9.

The underground water of the refuse dump enters the water collecting well 2 through the water inlet hole 301, is intercepted by the retaining wall 1 at the position of the water collecting well 2, and then is discharged to the sewage collecting tank 9 through the water outlet hole 302 and the drainage blind ditch 4.

The structure can isolate and protect the water falling hole or the pit, is convenient for discharging karst depression or trough dump slope water, avoids the pollution to karst underground water, and simultaneously avoids the phenomenon that the dump is sealed to cause the collapse of karst caused by positive pressure and negative pressure in the interior karst space.

A method for realizing a karst dump foundation treatment structure comprises the following steps:

a. and calculating a flood level elevation according to the catchment area of the waste dump field area, and determining the height of the retaining wall I1, the height of the water collecting well 2 and the size of the drainage blind ditch 4 according to the flood level elevation.

b. Cleaning a field, excavating a foundation pit, placing a retaining wall I1 on a watertight layer, and performing waterproof treatment on the foundation, wherein the foundation is a permeable layer.

c. Binding a reinforcing steel bar of the first retaining wall 1, installing a template of the first retaining wall 1, pouring concrete, and coating an impermeable material 101 on the peripheral surface of the first retaining wall 1.

d. And (5) binding the reinforcing steel bars of the water collecting well 2, installing a template of the water collecting well 2, and pouring concrete.

e. Reserve PVC pipe inlet opening 301 passageway on d step sump pit 2, the high-end parcel of inlet opening 301 has the geotechnological cloth 6 that permeates water, the geotechnological cloth 6 that permeates water peripheral hardware gravel reversed filter 7, has laid the clay layer 8 on the 7 bottom surfaces discarded articles of gravel reversed filter.

f. Reserving a water outlet hole 302 channel on the d-step water collecting well 2, adjusting the height of the water outlet hole 302 according to the actual terrain condition, and wrapping the lower end of the water outlet hole 302 with the permeable geotextile 6.

g. And paving a drainage blind ditch 4 at the base of the waste dump field, wherein the bottom of the drainage blind ditch 4 is an impermeable foundation 404, the top of the drainage blind ditch is a grouted stone sheet top plate, the middle of the drainage blind ditch is filled with permeable block stones, and two side surfaces of the drainage blind ditch 4 are provided with one-way permeable geotextiles.

h. And a sewage collecting tank 9 is built at the lower end of the drainage blind ditch 4, leachate in the water collecting well 2 is discharged into the sewage collecting tank 9 through the drainage blind ditch 4, and the leachate is treated by a sewage treatment system and discharged after reaching the standard when the leachate does not meet the discharge requirement.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims (9)

1. The utility model provides a karst refuse dump foundation treatment structure which characterized in that: including annular barricade (1), annular barricade (1) encircles the hole of falling into water (5) or the pit setting disappears, barricade (1) outer loop is around being provided with annular barricade two (3), form sump pit (2) between barricade (1) and barricade two (3), well upper portion interval on the barricade two (3) is equipped with inlet opening (301) of a plurality of slopes, inlet opening (301) are held for the low side towards sump pit (2), the lower part on the barricade two (3) is equipped with apopore (302) of slope, apopore (302) are held for high-end towards sump pit (2), apopore (302) low side meets with the drainage blind pit (4) of slope, the low side of drainage blind pit (4) links to each other with sewage collecting pit (9) outside the refuse dump.

2. The karst dump foundation treatment structure according to claim 1, characterized in that: and an impermeable material layer (101) is arranged on the outer side of the first retaining wall (1).

3. The karst dump foundation treatment structure according to claim 1, characterized in that: the drainage blind ditch (4) comprises a ditch body, the ditch body is formed on the waste of a waste dump, the bottom of the ditch body is provided with an anti-seepage foundation (404), the middle part of the ditch body is filled with coarse grain materials (403), a top plate (401) covers the coarse grain materials (403), and water seepage layers (10) capable of realizing one-way water seepage from outside to inside are arranged on two sides of the ditch body.

4. The karst dump foundation treatment structure according to claim 3, characterized in that: the top plate (401) is a grouted stone sheet top plate.

5. The karst dump foundation treatment structure according to claim 3, wherein: the impermeable foundation (404) is a reinforced concrete foundation.

6. The karst dump foundation treatment structure according to claim 1, characterized in that: the top surface of the second retaining wall (3) is higher than the height of the waste in the waste dump and lower than the height of the first retaining wall (1).

7. The karst dump foundation treatment structure according to claim 1, characterized in that: the high-end parcel of inlet opening (301) has geotechnological cloth (6) that permeates water, geotechnological cloth (6) that permeates water peripheral hardware gravel reversed filter (7), and the thing of abandonment of gravel reversed filter (7) bottom surface refuse dump is spread and is had clay layer (8).

8. The karst dump foundation treatment structure according to claim 1, characterized in that: and both ends of the drainage blind ditch (4) are wrapped with permeable geotextiles (6).

9. The karst dump foundation treatment structure according to any one of claims 1 to 8, wherein: the bottoms of the first retaining wall (1), the second retaining wall (3) and the water collecting well (2) are all of reinforced concrete structures.

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