CN201473960U

CN201473960U - Tailing dam leakage plugging and reinforcing device

Info

Publication number: CN201473960U
Application number: CN2009201890096U
Authority: CN
Inventors: 沈楼燕
Original assignee: China Nerin Engineering Co Ltd
Current assignee: China Nerin Engineering Co Ltd
Priority date: 2009-09-09
Filing date: 2009-09-09
Publication date: 2010-05-19
Anticipated expiration: 2019-09-09

Abstract

The utility model discloses a tailing dam leakage plugging and reinforcing device, which comprises a tailing dam, bagged macadam and rockfill. The bagged macadam is formed by cloth bags sewn by non-woven geotextile and macadam filled in the cloth bags. The bagged macadam is close to external sloping surface of the downstream of the tailing dam and is distributed in the vertical direction from the serious tailing dam leakage part to the tailing dam base. The length of the bagged macadam in the horizontal direction exceeds the leakage range for a certain length. The rockfill is arranged on one side of the downstream of the bagged macadam and is close to the bagged macadam. The length of the rockfill in the horizontal direction is equal to the length of the bagged macadam. The utility model has the advantages that the plugging effect of the tailing dam is good, the leaked tail can be effectively intercepted, the goal of safe leakage plugging is realized, the safe reinforcing effect on the tailing dam is obtained, the safety and the reliability of the tailing dam are improved and the implementation is simple, convenient and easy.

Description

Shutoff of tailing dam seepage and bracing means

Technical field

The utility model belongs to the mine safety technical field, relates to seepage shutoff of a kind of mine tailing storehouse and bracing means.

Background technology

China is a mining powers, and mine year discharging mine tailing reaches 600,000,000 tons.Except that fraction as filling in mine or the comprehensive utilization, the overwhelming majority is stored up in the mine tailing storehouse.The mine tailing storehouse is exactly the association that stores the various facilities of mine tailing, also is the necessary facility of keeping the mine ordinary production.

According to statistics, by the end of the year 2008,12655 in total mine tailing storehouse, the whole nation, also increasing newly in the scale with more than 300 every year.Wherein, danger, danger, sick storehouse account for 39% of sum; China be the whole world have mine tailing storehouse quantity at most, mine tailing storehouse accident potential leads one of the highest country.In the various great disaster in the world, mine tailing storehouse disaster is only second to generation earthquake, cholera, flood and hydrogen bomb etc. and occupy the 18th.In a single day it have an accident, and will cause significant damage to area, the downstream people's life and property, and environment is caused severe contamination.Therefore, the security and stability in mine tailing storehouse is very important, and wherein, the safety in mine tailing storehouse depends primarily on the security and stability of tailing dam, and therefore, the safety and stability technology of tailing dam is one of object of mine safety technical field primary study always.

The tailing dam seepage failure is the main pattern that tailing dam destroys.Seepage failure occurring generally is characterized by: initially ooze clear water, water percolating capacity increases gradually, develops into the seepage muddy water, and the water quality muddiness is carried mud pellet and tailings.If untimely shutoff is also reinforced, the seepage failure aggravation finally causes the tailing dam dam break.

Prior art adopts " rigidity shutoff " device usually, promptly adopt rigid material for example curing materials such as cement bonded sand cemented rock, rubble concrete, plain concrete seepage place is carried out shutoff by force, pursue the engineering effort of " go all out to fight the floods, watertight ".This plugging effect is unsatisfactory, and because of high water level in the mine tailing storehouse and seepage shutoff place have formed bigger head difference, under the pressure effect that high water head forms, the rigidity plugging material is often easily destroyed, causes shutoff not tight, leaks tailings.From shutoff science Analysis on Mechanism, the primary goal of shutoff is to restrain in mine tailing dam body clay particle and the storehouse tailings with the infiltration outflow, prevent to stablize because of seepage failure seriously jeopardizes tailing dam, next is only the control discharge of exosmosing and gradually reduces, be that initial target is " leak and do not leak sand ", final goal is " it is water-tight to reduce the final control of outer water percolating capacity gradually ", therefore at the shutoff initial stage, there is no need to pursue " watertight ".Based on this principle, the utility model provides a kind of tailing dam seepage shutoff bracing means, utilization " hydraulic reverse filter " principle is controlled seepage failure, promptly adopt and have the non-woven geotextile of anti-filter effect in conjunction with natural filter material such as rubble, piece stone etc. carry out shutoff to the tailing dam seepage place and reinforce, can effectively tackle tailings and clay particle, make it to deposit, and infiltration energy infiltrate plugging material, As time goes on, mine tailing and the clay particle deposit thickness before plugging material increases day by day, water permeability will be worse and worse, and outer water percolating capacity will reduce gradually until finally being brought under control.

Summary of the invention

The purpose of this utility model is to provide shutoff of a kind of tailing dam seepage and bracing means, this device can overcome the above-mentioned defective of conventional apparatus, safety, effectively, shutoff tailing dam seepage easily, and tailing dam played reinforcement effect, thereby guarantees the security and stability of tailing dam.

The technical solution of the utility model is: shutoff of a kind of tailing dam seepage and bracing means, and this device comprises tailing dam, packed rubble and rockfill; The cloth bag that packed rubble adopts non-woven geotextile the to make rubble of packing into constitutes, and the downstream outer slope of the adjacent tailing dam of packed rubble distributes from tailing dam serious position to the tailing dam substrate of seeping water on the vertical direction; Rockfill is positioned at downstream one side of packed rubble and near packed rubble, length is with packed rubble on the rockfill horizontal direction.

Advantage of the present utility model is: the plugging effect to tailing dam is good, can effectively tackle tailings, the ingenious good anti-filter characteristic of utilizing non-woven geotextile " sand is not leaked in infiltration ", make tailings accompany under place, the slit deposition of non-woven geotextile, but infiltration can flow away by non-woven geotextile, therefore, the high water head pressure that high water level and seepage shutoff place form in the mine tailing storehouse has obtained release, no longer plugging device is formed bigger compression failure.As time passes simultaneously, the mine tailing deposit thickness increases day by day, and water permeability worse and worse, water amount of seepage will reduce gradually, and then plugging effect is become better and better, and is to improve, realize safe shutoff seepage purpose, and tailing dam is played the security hardening effect, improve the security and stability of tailing dam.Another advantage of the present utility model is the easily row that is easy to implement.

The utility model is not suitable for the tailing dam of storing dangerous mine tailing.

Description of drawings

Fig. 1 is the utility model a kind of tailing dam seepage shutoff and bracing means floor map;

Fig. 2 is the utility model a kind of tailing dam seepage shutoff and bracing means A-A sectional view.

Shutoff of a kind of tailing dam seepage and bracing means comprise tailing dam 1, packed rubble 2 and rockfill 3.The downstream outer slope of packed rubble 2 adjacent tailing dams 1 distributes from tailing dam 1 infiltration serious position to tailing dam 1 substrate on the vertical direction; Length is to exceed infiltration scope both sides 5-10m control, bottom width 1-2m on the horizontal direction.Packed rubble 2 adopts 400g/m ²The 0.3m that non-woven geotextile is made * 0.3m cloth bag rubble of packing into constitutes.Rockfill 3 is positioned at downstream one side of packed rubble 2 and near packed rubble 2, rockfill 3 top width 1-2m, and outer slope 1: 1.0-1.2 adopts artificial reason to build and also is aided with the compacting of vibratory compaction equipment.Length is with packed rubble 2 on rockfill 3 horizontal directions.

Claims

1. tailing dam seepage shutoff and bracing means, it is characterized in that: this device comprises tailing dam (1), packed rubble (2) and rockfill (3); The cloth bag that packed rubble (2) adopts non-woven geotextile the to make rubble of packing into constitutes, and the downstream outer slope of the adjacent tailing dam of packed rubble (2) (1) distributes from tailing dam (1) infiltration serious position to tailing dam (1) substrate on the vertical direction; Rockfill (3) is positioned at downstream one side of packed rubble (2) and near packed rubble (2), length is with packed rubble (2) on rockfill (3) horizontal direction.