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Dredging and sludge disposal method for an open pit

A technology for open-pit mining and silt, which is applied in filling, protective devices, mining equipment, etc., can solve the problems of complex operation and maintenance, large equipment investment, and low processing efficiency, so as to improve economic benefits, reduce dredging costs, and avoid Effect of dredging equipment and pipeline costs

Inactive Publication Date: 2019-05-10
MASTEEL GRP MINING CO LTD
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

At present, the most widely used sludge treatment technology is the mechanical dehydration method. This method requires a lot of equipment investment, low treatment efficiency, complicated operation and maintenance, and high energy consumption.

Method used

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  • Dredging and sludge disposal method for an open pit
  • Dredging and sludge disposal method for an open pit

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Embodiment Construction

[0020] In order to further describe the present invention, a method for dredging and sludge disposal of an open-pit pit according to the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] Such as figure 1 As shown, a method for dredging and sludge disposal in an open pit, the construction steps are as follows:

[0022] Step 1: Build side cut-off ditches 2 at the slope toe of side cut-off 1 in the open-pit stope, lead the intercepted water directly to the drainage tank pool 6, set up multiple cut-off ditches to reduce the amount of water flowing into the bottom of the pit, and relieve the buoyancy tank at the bottom of the pit Suction pump 5 pressure.

[0023] Step 2: The bottom of the open-air pit includes the upper shallow sedimentation water 4 and the bottom sedimentation silt 3. A floating tank drainage pump 5 is arranged from the deep water area of ​​the mining pit with a relatively shallow a...

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Abstract

The invention discloses a dredging and sludge disposal method for an open pit, which comprises the following steps of: building an intercepting ditch on an upper step of the open pit, intercepting catchment at the periphery of the open pit to a draining pump pool, and directly draining; meanwhile, constructing a water filtering structure in a dumping site for dewatering the cleaned sludge, then performing mud and water layering treatment at the pit bottom, that is, pumping out water at the upper part of the sludge by adopting a buoyancy tank pump, and then hovelling and transporting the sludgeoutwards. The sludge transported out of the mining pit is poured into a pre-constructed water filtering structure of a dumping site, and natural drying and dehydration are carried out by utilizing the gravity of the sludge. According to the method, open-pit mining equipment, the permeability of water in the sludge and the filtering performance of coarse gravels are fully utilized, the equipment investment cost is relatively low, and a very good effect on sludge dewatering is achieved.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment in open-pit mining pits, and in particular relates to a method for on-site cleaning and sludge disposal in open-pit mining pits. Background technique [0002] During the mining process of open-pit mines, atmospheric precipitation and local formation water gushing around the stope will wash away the side walls of the steps, causing the side rocks and soil loosened by blasting to scatter to the bottom of the pit. normal production work. [0003] The existing dredging technology is mostly used for surface facilities such as lakes, rivers, reservoirs, etc. There is no dredging technology for open-pit mines. Due to the long-term accumulation of water at the bottom of the open pit, the silt sinks to the bottom of the pit in a saturated state after sedimentation, and the thickness of silt sedimentation in different parts is not uniform. If a mud pump is used to transport the sludge, it is nece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E03F1/00E03F3/04E03F5/10E03F5/22E02D17/18E02D31/00E21F16/00
Inventor 王荣林黄小忠王亮祝小龙苗涛夏斯
Owner MASTEEL GRP MINING CO LTD
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