CN207891929U

CN207891929U - A kind of ecotype Tailings Dam leakage preventing structure

Info

Publication number: CN207891929U
Application number: CN201820215689.3U
Authority: CN
Inventors: 陈天镭; 秦婧; 赵星芸
Original assignee: Lanzhou Engineering and Research Institute of Nonferrous Metallurgy Co Ltd
Current assignee: Lanzhou Engineering and Research Institute of Nonferrous Metallurgy Co Ltd
Priority date: 2018-02-07
Filing date: 2018-02-07
Publication date: 2018-09-21
Anticipated expiration: 2028-02-07

Abstract

The utility model discloses a kind of environmental Tailings Dam leakage preventing structures, belong to Tailings Dam antiseepage field, to solve the problems, such as constructional difficulties existing for geomembrane anti-seepage.A kind of ecotype Tailings Dam leakage preventing structure, body, waterproof horizon d, native film cut-off wall are oozed including vertically cutting, it is equipped with native film cut-off wall in the upstream position of tailing accumulation body, it is equipped with vertical cut in the downstream of tailing dam and oozes body, it is equipped with waterproof horizon d in the bottom of tailing accumulation body and tailing dam, vertical cut is oozed the bottom of body and soil film cut-off wall and connect with waterproof horizon d.The utility model is preferable for some geological conditions, enough Tailings Dam of basement rock barrier performance itself can be used basement rock and cut-off wall is added to form complete leakage preventing structure.It avoids reservoir area and completely spreads situation and newly-built Tailings Dam investment and the environmental pollution caused by plastic film mulch for saving geomembrane, there is green ecological, easy for construction, many advantages and prodigious economy, the environmental benefit and significant social benefit such as reduce investment outlay and reduce environmental pollution.

Description

A kind of ecotype Tailings Dam leakage preventing structure

Technical field

The utility model belongs to Tailings Dam antiseepage field, and in particular to a kind of ecotype Tailings Dam leakage preventing structure.

Background technology

Tailings Dam is a big problem to the pollution of water, and impervious material base generally all selects geotechnique's synthesis material used in present China Material will produce a large amount of environmental pollutions using composite anti-penetrating mode during cost is huge and geosynthetics production process used.Though Right geomembrane anti-seepage works well, but constructional difficulties；For some library locations, basement rock barrier performance itself is fine, then Reservoir area is laid with geomembrane just not necessarily, and preferable in some site conditions, basement rock infiltration coefficient is smaller, the preferable library of integrality Area, so that it may to use basement rock to carry out antiseepage.

Utility model content

The purpose of this utility model is to provide a kind of environmental Tailings Dam leakage preventing structure, to solve existing for geomembrane anti-seepage Constructional difficulties problem.

The technical solution that the utility model is taken is：A kind of ecotype Tailings Dam leakage preventing structure, accumulates in tailing The downstream of body is equipped with tailing dam, it includes that vertical cut oozes body, waterproof horizon d, native film cut-off wall, in the upper of tailing accumulation body It swims position and is equipped with native film cut-off wall, being equipped with vertical cut in the downstream of tailing dam oozes body, in the bottom of tailing accumulation body and tailing dam Equipped with waterproof horizon d, vertical cut is oozed the bottom of body and soil film cut-off wall and is connect with waterproof horizon d.

The utility model proposes a kind of leakage preventing structures just meeting antiseepage requirement using natural waterproof horizon d, using not Permeable horizon d horizontal leakage preventing, the tailing water oozed under realizing in water barrier in no library, in Tailings Dam water it is impermeable pass through every Water layer, polluted underground water.Using basement rock antiseepage, traditional one layer of geomembrane anti-seepage of laying more than ground is not used, is reduced It using the pollution of geomembrane, while effectively preventing geomembrane and being easy to happen destruction, lead to impermeable failure, the disadvantage of polluted underground water End, and greatly reduces engineering cost, and it is many excellent that row oozes that stability is good, engineering construction facilitates, gathers materials on the spot, reducing expenses etc. Gesture has significant economic benefit, environmental benefit and social benefit.

In the preferable Tailings Dam construction of geological condition of reservoir area first rock stratum spy is found out using investigation ways such as drilling, physical prospectings Property, basement rock water penetration and its integrality can be used basement rock antiseepage, split to having when the infiltration coefficient of basement rock is less than code requirement The place of gap carries out grouting treatment, ensures basement rock integrality, then ooze cutting to ooze dam and cut vertical cut of the positions Hong Ba setting, makes reservoir area It forms complete impervious barrier, ensures that reservoir area sewage selects factory to recycle cutting to ooze dam position and collect, not polluted underground water, flood outside library Drain through Cut-off ditch after cutting big vast dam and cutting flood, realizes shunting of completely removing contamination.

The utility model has the beneficial effects that：The utility model is preferable for some geological conditions, basement rock barrier properties itself The enough Tailings Dams of energy, can be used basement rock and cut-off wall are added to form complete leakage preventing structure.It avoids reservoir area and completely spreads saving geomembrane Situation and newly-built Tailings Dam investment and environmental pollution caused by plastic film mulch, have green ecological, it is easy for construction, save throw It many advantages such as provides and reduce environmental pollution, there is prodigious economy, environmental benefit and significant social benefit.

Description of the drawings

Fig. 1 is a kind of schematic diagram of environmental Tailings Dam leakage preventing structure；

Fig. 2 is a kind of floor plan of environmental Tailings Dam leakage preventing structure.

In figure：1- tailing dams；2-, which is cut, oozes dam；3- cuts big vast dam；4-, which is vertically cut, oozes body；The waterproof horizon ds of 5-；6- soil films are cut Ooze wall；7- flood tunnels；8- tailing accumulation bodies；9- drainpipes；10- gullys；It cuts and oozes reservoir area A；Water area B in library；It is big vast outside library Pool C；Height of regulating and storing H；It cuts and oozes flood level height h in library.

Specific implementation mode

The utility model is described in further detail below in conjunction with the accompanying drawings.

It is equipped with tailing dam 1, a kind of ecotype Tailings Dam leakage preventing structure in the downstream of tailing accumulation body 8, including vertically cuts and oozes Body 4, waterproof horizon d 5, native film cut-off wall 6 are equipped with native film cut-off wall 6, in tailing dam in the upstream position of tailing accumulation body 8 1 downstream is equipped with vertical cut and oozes body 4, is equipped with waterproof horizon d 5 in the bottom of tailing accumulation body 8 and tailing dam 1, vertical cut is oozed The bottom of body 4 and native film cut-off wall 6 is connect with waterproof horizon d 5.

It cuts and oozes dam 2, cuts big vast 3 position of dam and oozed using vertical cut, form complete impervious barrier with waterproof horizon d 5, library is outer big vast Flood in the C of pool is drained using flood tunnel 7, and water is arranged through gully 10,9 system of drainpipe in the library in library in water area B Go out to drain into cut and ooze reservoir area A, collects Hui Xuan factories and utilize or return reservoir area.Reservoir area, which can reserve, centainly regulates and stores height H according to tailing Kuku Flood volume of required storage in surface current domain, which determines, collects flood in library, slowly evaporates.Geomembrane waste is avoided, is reduced Difficulty of construction is reduced while cost.

Specific implementation method is：

1. determining basement rock infiltration coefficient and its integrality using investigation way, if basement rock has crack, it is in the milk to crack Processing ensures the reliability of reservoir area horizontal leakage preventing.The basement rock for reaching code requirement using infiltration coefficient is basic as antiseepage, when infiltration is Number is less than 1 × 10^-7When cm/s, reservoir area can carry out horizontal leakage preventing using basement rock, and grouting treatment can be carried out to imperfect basement rock；Using It vertically cuts to ooze and adds basement rock horizontal leakage preventing, native film cut-off wall is set to basement rock on the dam body upstream library dams Wei Jiehong, dam body downstream section is oozed Dam position oozes vertical cut of body using vertical section and is seeped into basement rock, and reservoir area is made to form complete leakage preventing structure.

2. determining to cut according to a flood volume and oozing flood level height h in library, cut and ooze library area, it may be determined that cuts and ooze library Peak level height, cuts that ooze height of dam degree be that height of water level adds safe superelevation, thus can be arranged and cut that ooze the water inlet of library internal drainage well high Degree, draining bottom be provided the mouth of a river can drain to cut ooze outside dam, for prevent Tailings Dam occur check standard more than it is especially big Flood drains off floodwaters；

3. the Tailings Dam leakage preventing structure ensures that library Wai Shui cannot be introduced into reservoir area, library Nei Shui does not exosmose, and water is after collection in library It returns Tailings Dam and slowly evaporates or return and factory is selected to recycle, the completely not outer row of rainfall stays in reservoir area evaporation or drains into cut and oozes library It returns and factory is selected to utilize, thus adjust and realize water balance in library, the not outer row of sewage.

Claims

1. a kind of ecotype Tailings Dam leakage preventing structure is equipped with tailing dam in the downstream of tailing accumulation body, it is characterised in that：It includes Vertical cut oozes body（4）, waterproof horizon d（5）, native film cut-off wall（6）, in tailing accumulation body（8）Upstream position be equipped with native film Cut-off wall（6）, it is equipped with vertical cut in the downstream of tailing dam (1) and oozes body（4）, in tailing accumulation body（8）With the bottom of tailing dam (1) Equipped with waterproof horizon d（5）, vertical section oozes body（4）With native film cut-off wall（6）Bottom and waterproof horizon d（5）Connection.