CN213014378U - Underground polluted liquid interception and collection structure - Google Patents

Abstract

The utility model relates to an underground pollution liquid cuts and oozes and collects structure. The utility model aims at providing an underground pollution liquid cuts and oozes and collects structure and implementation method to carry out effective control with groundwater pollution scope, avoid the pollutant exosmosis. The technical scheme of the utility model is that: the utility model provides an underground polluted liquid cuts oozes and collects structure for abandon the underground polluted liquid of sediment body stacking area and cut ooze and collect, its characterized in that: a polluted liquid interception facility is arranged in the foundation of the underground water flow channel downstream area of the waste slag body stacking area, and a slope rainwater drainage channel and a seepage collecting facility for collecting seepage in the foundation are arranged on the upstream of the polluted liquid interception facility. The utility model is suitable for a because cause such as unnormalized spoil cause pollution such as groundwater heavy metal, iodide, need carry out the engineering that the sepage is kept apart and is collected.

Description

Underground polluted liquid interception and collection structure

Technical Field

The utility model relates to an underground pollution liquid cuts and oozes and collects structure. The method is suitable for projects which need to carry out seepage isolation and collection due to pollution of heavy metals, iodides and the like in underground water caused by non-standard soil abandonment and the like.

Background

The landfill site has extremely high anti-seepage requirements, and strict anti-seepage treatment measures and seepage collecting measures are usually required to be adopted, so that the purpose of avoiding the pollution to the surrounding environment and underground water caused by the overflow of seepage containing pollutants is achieved. However, in the process of human society development, due to insufficient understanding of pollution hazards or some non-normative or even illegal slag disposal behaviors caused by other reasons, a slag disposal site is lack of strict anti-seepage measures and seepage collecting measures, so that the surrounding underground water is polluted, and particularly, when the pollution of heavy metals, iodides and the like exists in the slag disposal site, serious damage is caused to the surrounding environment. In addition, when the impermeable structure of the landfill site is damaged due to long-term maintenance or other reasons, the similar problem that the seepage pollutes the underground water can also occur. Therefore, effective measures must be taken to control the further diffusion of the pollutants, and provide possibility for further pollutant cleaning and ecological restoration.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: aiming at the problems, the underground polluted liquid interception and collection structure and the implementation method thereof are provided to effectively control the pollution range of underground water and avoid the outward leakage of pollutants.

The utility model adopts the technical proposal that: the utility model provides an underground polluted liquid cuts oozes and collects structure for abandon the underground polluted liquid of sediment body stacking area and cut ooze and collect, its characterized in that: a polluted liquid interception facility is arranged in the foundation of the underground water flow channel downstream area of the waste slag body stacking area, and a slope rainwater drainage channel and a seepage collecting facility for collecting seepage in the foundation are arranged on the upstream of the polluted liquid interception facility.

The polluted liquid intercepting facility comprises an impervious wall and curtain grouting arranged below the impervious wall, wherein the bottom of the impervious wall penetrates through a permeable layer in a foundation.

The facility is collected to sepage includes sepage overflow ditch and a plurality of precipitation holes that set up in sepage overflow ditch below ground, and the downthehole cartridge of precipitation has the sleeve pipe, and the sleeve pipe upper end passes sepage overflow ditch bottom plate and extends to in the sepage overflow ditch, and the sleeve pipe buries the downthehole pipe body section of precipitation and is the floral tube, and the dress row's of taking out pipe in the sleeve pipe, the row's of taking out pipe is through water pump intercommunication collecting pit.

And the orifice part of the water reducing hole is blocked by adopting mortar.

The seepage overflow drain is positioned at the lower part of the slope rainwater drainage channel.

A construction method of the underground polluted liquid seepage-stopping and collecting structure is characterized in that:

analyzing an underground seepage field through original topographic and geological data, current landform and underground water level monitoring information, and determining a seepage direction;

drilling a hole at the downstream edge of the waste slag stacking area, extracting underground water for water quality analysis, and determining the polluted range and depth of the underground water;

arranging an impervious wall and curtain grouting in a downstream area of the underground water flow channel of the slag body abandoning stacking area;

excavating a base of a seepage overflow ditch and a slope rainwater drainage ditch;

drilling and arranging water reducing holes along the seepage overflow channel according to the designed interval and depth, installing a sleeve in each hole, and plugging the hole opening part by adopting mortar;

constructing a groove of a seepage overflow ditch, a slope rainwater drainage channel and a seepage collecting pool, wherein the end part of the sleeve extends out of concrete at the bottom of the groove of the seepage overflow ditch;

the pumping and discharging pipes and the water pump are installed in units;

and installing a closed cover plate of the seepage overflow channel.

The utility model has the advantages that: the utility model discloses a contaminated liquid cut-off facility cuts the intercommunication passageway of abandoning the slag body and stacking regional groundwater and outside groundwater, reduces the ground water level of slag yard seepage flow export through the hole that falls simultaneously, effectively reduces the harm that the seepage liquid passes through groundwater exosmosis in the slag yard through the mode that row's combination was cut.

Drawings

Fig. 1 is a floor plan of an embodiment.

Fig. 2 is a typical cross-sectional view of the embodiment.

FIG. 3 is a sectional view of the permeate collection means in the example.

FIG. 4 is a schematic structural view of a permeate collection facility in the embodiment.

In the figure: 1. a waste slag body stacking area; 2. a contaminated liquid cut-off facility; 2-1, impervious walls; 2-2, curtain grouting; 3. a water dropping hole; 4. a seepage overflow drain; 4-1, a groove; 4-2, sealing the cover plate; 5. a slope rainwater drainage channel; 6. a percolate collection tank; 7. a water permeable layer; 8. a permeable rock formation; 9. an impermeable rock stratum; 10. a sleeve; 11. blocking mortar; 12. a tube drawing and discharging tube; 13. and (4) a water pump.

Detailed Description

In this embodiment, the waste slag is piled up on an untreated (or an installed impermeable layer fails) natural foundation, the foundation is divided into a surface permeable soil layer, a middle permeable rock layer and a bottom relatively impermeable rock layer. The embodiment provides an underground polluted liquid interception and collection structure which is used for intercepting and collecting the underground polluted liquid in a waste slag body stacking area.

In the embodiment, a polluted liquid interception facility is arranged in the area downstream of the underground water flow channel of the slag discarding body stacking area, and a slope rainwater drainage channel and a seepage collection facility are arranged upstream of the polluted liquid interception facility.

In the embodiment, the impervious wall of the pollution liquid interception facility is grouted with a curtain arranged below the impervious wall, the bottom of the impervious wall penetrates through a permeable soil layer in the foundation, and the permeable soil layer in the middle is grouted with the curtain.

The seepage collection facility in this embodiment comprises a seepage overflow launder comprising a gutter located downstream of the slope storm drain and a closure flap covering the gutter. The foundation below the groove is drilled with a plurality of water-reducing holes, the water-reducing holes are internally provided with sleeves, the upper ends of the sleeves penetrate through the bottom plate of the groove and extend into the groove, the pipe body sections of the sleeves embedded into the water-reducing holes are flower pipes, the sleeves are internally provided with pumping pipes, and the pumping pipes are communicated with a collecting pool located at the downstream through a water pump.

The specific implementation method of the underground polluted liquid interception and collection structure in the embodiment comprises the following steps:

1. analyzing an underground seepage field through original topographic and geological data, current landform and underground water level monitoring information, and determining a seepage direction;

2. drilling the edge of a downstream slag field of the seepage field, extracting underground water for water quality analysis, and determining the polluted range and depth of the underground water;

3. arranging an impervious wall 2-1 and curtain grouting 2-2 at the seepage outlet of the slag yard;

4. excavating a seepage overflow ditch 4 and a slope rainwater drainage channel 5 foundation;

5. drilling water reducing holes 3 along the seepage overflow channel 4 according to the designed interval and depth, installing a sleeve 10 in the holes, and plugging 11 the hole opening part by adopting mortar;

6. building a groove 4-1, a slope rainwater drainage channel 5 and a seepage collecting pool 6, wherein the end part of the sleeve 10 extends out of the concrete at the bottom of the groove 4-1;

7. the pumping and discharging pipe 12 and the water pump 13 are installed in units;

8. and a closed cover plate 4-2 of the seepage overflow drain 4 is arranged.

Claims (5)

1. The utility model provides an underground polluted liquid cuts oozes and collects structure for abandon the underground polluted liquid of sediment body stacking area (1) and cut oozes and collect which characterized in that: a polluted liquid interception facility (2) is arranged in the foundation of the underground water flow channel downstream area of the abandoned dreg body stacking area (1), and a slope rainwater drainage channel (5) and a seepage collecting facility for collecting seepage in the foundation are arranged on the upstream of the polluted liquid interception facility (2).

2. The underground contaminated fluid intercepting and collecting structure of claim 1, wherein: the polluted liquid interception facility (2) comprises an impervious wall (2-1) and curtain grouting (2-2) arranged below the impervious wall (2-1), wherein the bottom of the impervious wall (2-1) penetrates through a permeable layer (7) in a foundation.

3. The underground contaminated fluid intercepting and collecting structure of claim 1, wherein: facility is collected to sepage includes sepage overflow ditch (4) and a plurality of water hole (3) that fall that set up in sepage overflow ditch (4) below ground, and the interpolation of water hole (3) is equipped with sleeve pipe (10) down, and sleeve pipe (10) upper end is passed sepage overflow ditch bottom plate and is extended to in sepage overflow ditch (4), and sleeve pipe (10) bury the body of pipe section that falls in water hole (3) and be the floral tube, and bushing (10) interpolation dress calandria (12), and calandria (12) are through water pump (13) intercommunication sepage collecting pit (6).

4. The underground contaminated fluid intercepting and collecting structure of claim 3, wherein: the orifice part of the water falling hole (3) is sealed and blocked (11) by mortar.

5. The underground contaminated liquid interception and collection structure according to claim 3 or 4, characterized in that: the seepage overflow drain (4) is positioned at the downstream of the slope rainwater drainage channel (5).

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