Method to produce inert materials

FIELD: mining.

SUBSTANCE: method to produce inert materials from aggradational deposits of mountain river beds, including diversion of a water stream away from production borders with the help of gutters and dams without violation of coastal zone borders and safety benches. The stage production of rock mass and controlled wash of river sediments into a mined space of a pit along an inclined mine (trench). On the opposite board of the pit from the water conduit (current river bed) they form a separation zone with ledges protruding towards a mined space, and the inclined mine (for water conduit) stretches in direction of the separation zone. In process of controlled wash they carry out separate deposition of coarse and find fractions of sediments.

EFFECT: higher efficiency of production in limited areas without violation of coastal zone borders due to controlled formation of localisation zones in the mined space of the pit differing by size of aggradational sediments.

3 dwg

 

The invention relates to mining and can find application in the extraction of inert materials from the alluvial sediments in riverbeds upland rivers.

A well-known mining of alluvial deposits of the rivers. Haphazard mining of alluvial deposits in the river leads to the violation of the natural position of the bottom of the river and its banks. Although proven reserves may eventually recover, the banks collapse and the size of the floodplain increases.

There is a method of extraction of inert materials from the alluvial sediments in riverbeds upland rivers (application No. 2009127462/03(038181) from 16.07.2009), including diversion of water flow from the boundary extraction using drains and dams, without violating the boundaries of the coastal zone and berms security. In before flood period lead in two stages: at the first stage, in parallel with the drain lead mining rock mass; in the second stage of the inclined generation (trench) at an angle close to 90°, knock drainage and goaf career with overlapping conduit downstream in the flood period, carry out a managed alluvium deposits of the river in a goaf career.

The objective of the invention is to increase the efficiency of production in limited areas without violating the boundaries of the coastal zone due to the controlled formation (in the process of regeneration and reserves) in rabotnom space career areas of localization of different sizes alluvial deposits.

The task is solved in that the floodplain width is divided into two parts. On one side is a drain. River Bank from erosion protected by a berm. On the opposite side of the river floodplain is the mining of alluvial deposits. Without violating the boundaries of the coastal zone and berms security to the flood period lead in two stages: at the first stage, in parallel with the drain lead mining rock mass; in the second stage, the inclined generation (trench) knock drainage and goaf career with overlapping conduit downstream. And on the opposite side of the conduit (current river) Board career form the separation zone exposed in the goaf side ledges, and inclined production take place in the direction of the dividing zone. In the flood period, carry out a managed alluvium deposits of the river in a goaf career.

In the process of reclamation consists of separate deposition of coarse and fine fractions of the sediment through the formation of rifts, the position of which is set a location on the opposite from the inclined framing-Board speakers in the goaf side of the ledges.

Figure 1 presents the first phase of mining in the floodplain of the river:

1 - Bank of the river

2 - berm security

3 - protective dykes

4 - Virab is subjected to space

5 - drainage (current river).

Figure 2 presents the second phase of mining in the floodplain of the river:

1 - Bank of the river

2 - berm security

3 - protective dykes

4 - goaf

5 - drainage (current river)

6 - inclined generation (trench).

7 - speakers in the goaf side ledges of the pit.

Figure 3 presents the scheme of dissection and selective production of different sorts of rock mass after the regeneration of the stocks in the floodplain of the river:

1 - Bank of the river

2 - berm security

3 - protective dykes

4 - goaf

5 - drainage (current river)

8 - opening zone of localization of upstream sediments are represented by large fractions

9 - opening zone of localization of upstream sediments are represented by small fractions.

Examples of specific performance

Alluvial deposits are represented by rocks of various sizes, and zone provisions are relatively large (>70 mm) and small inclusions (small pebbles, sand) are arranged chaotically.

For the organization sort alluvial deposits have to build a special production line. At the same time, there are directions for the use of alluvial deposits, which do not require strict classification of raw materials. For example, for the construction of dams hvost is ranelid. The outer part and the base of the dam should be backfilled mostly lumpy rocks. At the same time for tabachnogo material used for blasting in open pits, need sand mixed with fine gravel. Even in the production of building materials, requiring strict classification of raw materials, preliminary, rough classification would provide a significant cost reduction.

It is well known that horizontal changes of the riverbed are due to the erosion of some banks and silting the opposite. Popping up the convex Bank, providing maximum resistance to movement of the river.

The proposed technical solution, the proposed method managed the localization process grade raw material in the regeneration of stocks.

The table presents the average characteristics of the material to be transported by the river Baksan in the winter and freshet periods 1988-1990, Given that the flood period lasts about three months, the annual volume transported by river material are more than 1 million tons.

The characteristics of the transported material river Baksan 1988-1990,
No.IndicatorsEd. MEAs. Period
FloodWinter
1Water consumptionm3per hour1253500132000
2The volume of transported mountainm3per hour23518.5
breed, including
by class size:
+200-500 mmm3per hour14.20.2
+100-200 mmm3per hour61.42.3
-100 mmm3per hour159.416

The method implemented is tsetse as follows. The floodplain width is divided into two parts (see figure 1-3.). On one side is the drain 5. And the river Bank from erosion protected by a berm 2. On the opposite side of the river floodplain is the mining of alluvial deposits. Work leading up to the flood period two stages: the first stage in parallel to the drain, without violating the boundaries of the coastal zone and berms security 2, lead mining rock mass; in the second stage of the inclined generation (trench 6) bring down the drain and goaf quarry floor (downstream) drainage dike 3.

In the process of production of the rock mass on the opposite side of the conduit (current river) Board career form the position of the separation zone boundaries (when regeneration of stocks) alluvial deposits, represented by large and small fractions. The separation zone at the initial stage of reclamation deposits includes speakers in the goaf side ledges of the pit. Dividing zone serves for damping the velocity of flow in inclined workings. For maximum effect hatchback development is traversed in the direction of the dividing zone. The damping of the velocity of the flow in the separation zone leads to the precipitation of the coarse component of the transported water of the rock mass. In Eminem formed roll, which increases the filtration properties of the separation zone.

In the flood period is filling out space 4, alluvial deposits.

Formed during the controlled reclamation zone concentrations of coarse and fine material are opened and are processed separately. Figure 3. presents opening and direction of testing different sorts of rock.

Sources of information

1. USSR author's certificate No. 1330313, CL IS 41/32, 1990

2. Konov V.I. methodology for the assessment of the ecological state of small rivers and protecting them from the influence of the mining industry (for example, Eastern Transbaikalia): abstract of thesis... Oct. technology. Sciences. M., 2008

3. Timofeenko H.E., Sekisov A.G., Ignatov, VN, Borovkov Y.A., Akulov CENTURIES, Ksenofontov, AS the Method of extraction of inert materials. A positive decision on the application No. 2009127462/03(038181) from 16.07.2009.

The technical result

In the process of reclamation consists of separate deposition of coarse and fine fractions of the sediment through the formation of rifts, the position of which is set a location on the opposite from the inclined framing-Board speakers in the goaf side of the ledges.

When developing upland deposits of the rivers are used to generate tailings, while for the formation and capacity of the dam tail the store have to mine rocks near the dam. Under quarry alienated land, which in mountainous conditions are of great value. For example, when developing the Tyrnyauz deposits of tungsten and molybdenum ores for the formation of the tailings dam (close to it) has been open mining of alluvial deposits. In the process of extraction of rock for filling of the dam, the position of the pit has reached the limit values of land allotment. Opening new horizons increases the cost of mining operations and reduce their intensity. While environmental impacts are not limited by the presence of a goaf career, the gap filling of the dam poses the risk of breaching and flooding of settlements downstream of the Baksan river. Therefore, in the reconstruction project of the Tyrnyauz wolframalpha plant needs to address the issue of dumping of tailings dam on the basis of new approaches with the use of environmentally sound technologies that provide resource recovery and permanence provisions of the coastal zone. Given that the construction of tailings dams the outer part and the base of the dam should be backfilled mostly lumpy mountain mass, the use of the proposed solution in a separate part of the production of different sorts of raw materials will ensure compliance with technical standards and demand the quality of work.

If the width of the floodplain 230 m (middle reaches of the river Baksan): 35-40 m will take berm security, protecting the shore from erosion; 20-30 m dam between the working area of the quarry and the conduit; 40-60 m - lines; 100-125 m - working area of the quarry. At the height of the ledge 10-12 m and the length of the working zone is about 250 m is provided by the annual output of 300 thousand m3or 750 thousand tons of rock, of which about 345 thousand tons of grain size of more than 70 mm can be used in dumping of tailings dams. At the same time small-sized part of the alluvial sediments and sand can be used for the production of tabachnogo and building materials. This will only be used about 50% of the features of the river (for example, Baksan river basin) reclamation and restoration of resources in the flood period. Cyclical work career, providing the stage of mining in dobavochnyi period, stage cleaning out space debris, spills of fuels and lubricants (dobavochnyi period), filling out space career managed by alluvium sediments of the river (flood period), while retaining the contours and parameters solves the problem of extraction of inert materials without disturbing the ecological balance in the floodplain of the river.

Rhythm dumping tailings dam is provided by the reserves performance career on the flood period.

The method of extraction of inert materials from the alluvial sediments in riverbeds upland rivers, including the diversion of water flow from the boundary extraction using drains and dams without violating the boundaries of the coastal zone and berms security, a staged production of the rock mass and managed alluvium deposits of the river in a goaf career on an inclined generation (trench), characterized in that on the opposite side of the conduit (current river) Board career form the separation zone exposed in the goaf side ledges, and inclined production (for conduit) are in the direction of the dividing zone.



 

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