The method of the underwater reclamation of soil

 

(57) Abstract:

The invention relates to mining and can be used in the reclamation dams, dams, tailing dams. The method includes the coastal strip of pressure and distribution of the slurry pipeline, alluvium soil by producing a slurry of the end openings of the distribution of the slurry line under water with the formation of cones of reclamation. What's new is that the distribution of the slurry line with negligible buoyancy and spaced in the direction of travel of the slurry outlet holes of different sizes and the same bandwidth is placed on the surface of a pond across the front of reclamation, and the total throughput outlet take no more than 90% of the total flow of a slurry, and the slurry flow through the end hole is not less than 10% of the total flow of a slurry, are alluvium soil simultaneous release of slurry from the end holes and the outlet holes of the distribution of the slurry line. The technical result of the invention is to increase the efficiency of the method by simplifying manufacturing operations and reducing costs. 2 Il.

The invention relates to mining and engineering and can Finance, including laying slurry line and alluvium soil through the issuance of flow of slurry under the water under the protecting shield (USSR author's certificate 1313954 E 02 D 17/16, 1987).

The disadvantage of this method is the presence of numerous, quite complex technological operations, complicating the production process and require significant labor and material costs, particularly in winter conditions, ice.

The known method of reclamation of the breed in water, comprising a strip of pressure and distribution of the slurry pipeline, alluvium rocks by a concentrated release of slurry under the water at a constant sequential movement of the end pipes of the distribution of the slurry line (I. M. Altaner, V. K. Egorov. The dredging. The reference material. Moscow state mining University, 1999, page 274).

The method is intended primarily for reclamation of the lower tier of dams and other structures and is characterized by a rather complex organization of work, especially when managing the process of reclamation.

The management process of reclamation consists of the following technological operations:

- maneuvering end of the rotary tube by means of a lifting mechanism mounted on a floating platform;

- per the s.

Furthermore, the method materialelor and time-consuming operation, especially in winter conditions freeze-up when additional costly measures to maintain main in the area of operations.

The technical result of the invention is to increase the efficiency of the method by simplifying manufacturing operations and reduce costs. Achieved technical result by way of underwater reclamation of soil, including coastal strip of pressure and distribution of the slurry pipeline, alluvium soil by producing a slurry of the end openings of the distribution of the slurry line under water with the formation of cones of reclamation, characterized in that the distributing slurry line with negligible buoyancy and spaced in the direction of travel of the slurry outlet holes of different sizes and the same bandwidth is placed on the surface of a pond across the front of reclamation, and the total capacity of the outlet is determined not more than 90% of the total flow of a slurry, and the slurry flow through the end hole of at least 10% of the total flow of a slurry, lead alluvium soil simultaneous release of slurry from the face vents and the exhaust opened what avocato provides its initial position at the water surface, and feed slurry him dive to the bottom or in the area (II) suspended silts up his trim buoyancy. Laying the ground from the bottom or in the zone of suspended silts with growth cones of reclamation from the bottom up provides partial washout of suspended silts and seal the remaining sludge. Roiled silts, with a dimensional weight of more units, increase the buoyancy effects on the slurry line, ensuring its gradual ascent. Laying the ground from the bottom, when the slurry does not pass through the upper zone (I) of clean water, provides the lowest turbidity of the pond.

In addition, finding the distribution of the slurry line completely under water does not require a device insulation in the winter.

The outlet holes on the bottom forming the slurry line throughout the length of different size, but same bandwidth provides dispersed production of pulp and self-regulation of the transit flow of the pulp with the gradual growth as backwater outlet solid component from head to end of the outlet.

The flow of slurry through the end hole of not less than 10% of the total flow at the beginning and persephoneia the slurry line of the slurry and its movement along its length, preventing the filling part of the slurry line with clean water and plugging the end of the hole with soil, and also provides a uniform dip of the slurry line along the entire length under the water.

In Fig.1 shows the structure constructed using the proposed method (the position before and after the issuance of the slurry) is a longitudinal section; Fig. 2 is the same cross section. The design contains a coastal discharge slurry line 1, distributing slurry line 2 made of polyethylene pipes with little buoyancy. The slurry line 2 is executed with the front hole 3 and the discharge holes 4, which are placed in the direction of travel of the pulp at the same distance from each other along the entire length of the bottom forming. Outlet openings 4 are made of different sizes, but the same bandwidth. The total capacity of the outlet 4 is determined not more than 90%, and the end of the hole 3 is not less than 10% of the full flow of the original slurry.

The method is as follows. Choose the target of reclamation and the entire length of the front of reclamation place distributing slurry line 2 with a slight buoyancy, which is a continuation of the onshore pressure slurry line 1. To p is it forming. When applying slurry, having a greater bulk density than water, the slurry line 2 sinking to the bottom 5 or to counterbalance the effects of suspended silt, having a bulk density higher than water. Through the outlet opening 4 arising under the pressure of the slurry along the length of the slurry line 2 roil, partially washing out the weak silty soils, and compacts the remaining silt. Roiled silts replenished muddy part of the resulting slurry, creating a cloud of suspended silts around the slurry line 2, which increases the buoyancy effect on the slurry line 2. This provides a gradual rise of the slurry line 2 and damming of the outlet 4 sequentially from shore to shore. To achieve a complete backwater all of the outlet 4 and the end holes 3 slurry line 2 rises to the level of the water in the pond. As the feed slurry is not terminated, the output slurry under pressure blurs the cones of reclamation, expanding their peaks. In the presence of the ice cover 6 vortical flows will dilute it along the slurry line 2 from the bottom to complete its destruction. The final step is washing of the slurry line 2 water, ensuring the release of solid particles and lift it to its original position. After that pulposa underwater reclamation.

The proposed method of underwater reclamation of soil has a wide range of applications for seasonal and year-round work, requires minimal material costs, eliminates labor-intensive device of the crowd in the winter and capacity of parts of the pipeline does not require the constant presence of mechanisms for moving the slurry line and staff, reduces technological interruptions in the supply of pulp.

The method of the underwater reclamation of soil, including coastal strip of pressure and distribution of the slurry pipeline, alluvium soil by producing a slurry of the end openings of the distribution of the slurry line under water with the formation of cones of reclamation, characterized in that the distributing slurry line with negligible buoyancy and spaced in the direction of travel of the slurry outlet holes of different sizes and the same bandwidth is placed on the surface of a pond across the front of reclamation, and the total throughput outlet take no more than 90% of the total flow of a slurry, and the slurry flow through the end hole is not less than 10% of the total flow of a slurry, lead alluvium soil simultaneous release of slurry

 

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