Recovery method for pit bottom ores after strip mine slope slipping

A technology for open-pit mines and ore bodies, which is applied in the fields of geotechnical engineering, mining engineering and tunnel engineering, can solve the problems of the difficulty of continuous mining of open-pit mines of caving bodies, the difficulty of dealing with caving bodies, and the waste of ore resources, so as to speed up the recovery of production. time, less auxiliary works, and the effect of reducing costs

Inactive Publication Date: 2019-09-06
中铁十九局集团矿业投资有限公司
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Problems solved by technology

However, when the open-pit slope collapses on a large scale, it is very difficult to deal with the collapsed body, and it is easy to cause secondary instability of the slope during the treatment process, which brings great difficulties to the treatment of the collapsed body and the continued mining of the open-pit min

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  • Recovery method for pit bottom ores after strip mine slope slipping
  • Recovery method for pit bottom ores after strip mine slope slipping

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 , 2 Shown, the present invention provides a kind of open-pit mine side slope landslide back mining method of pit bottom ore body, comprises the following steps:

[0022] Step 1. Determine the position of the landslide body and the relative positional relationship between the landslide body and the ore body. The landslide is located on the northwest side of the open pit. After the landslide, the collapsed rock mass is accumulated at the bottom of the open pit. The thickness of the landslide body reaches 30m , the cleaning is difficult, and there is still a hidden danger of secondary instability of the slope during the cleaning process;

[0023] Step 2, according to the relative positional relationship between the current landslide body and the ore body, the size of the roof pillar is designed to be 10m;

[0024] Step 3. According to the occurr...

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Abstract

The invention discloses a recovery method for pit bottom ores after strip mine slope slipping. The method includes the following steps that an underground mining method is adopted to recover difficult-to-mine ores after strip mine slope slipping, the exploiting engineering arrangement mode, recovery structure parameters, mining and development engineering design and a recovery technological process of the recovery method for the pit bottom ores after strip mine slope slipping are established, the pit bottom ores can be recovered after large-scale strip mine slope slipping only through construction of a part of underground roadway engineering, the ores can be recovered without treating strip mine slope landslide mass, and thus the cost of slope landslide mass treatment is greatly reduced, and the time for restoring production of a mine after strip mine slope slipping is shortened. Constructors operate in an underground roadway through the method, so that construction safety is high, andthe influence of secondary instable collapse of a slope is avoided.

Description

technical field [0001] The invention relates to the technical fields of geotechnical engineering, mining engineering and shaft engineering, in particular to a pit bottom ore body recovery method after side slope landslide in an open-pit mine. Background technique [0002] In the mining process of open-pit mines, rock mass quality, excavation and unloading, blasting disturbance, mining depth, slope angle and other factors are affected, which easily lead to slope instability and collapse. When the local small-scale open-pit slope collapses, the continued mining of the ore body at the bottom of the pit can be ensured by treating the collapsed body and reinforcing the unstable slope. However, when the open-pit slope collapses on a large scale, it is very difficult to deal with the collapsed body, and it is easy to cause secondary instability of the slope during the treatment process, which brings great difficulties to the treatment of the collapsed body and the continued mining ...

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Application Information

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IPC IPC(8): E21C41/30
CPCE21C41/30
Inventor 莫麟李长城李成峰崔智秋张士磊王博
Owner 中铁十九局集团矿业投资有限公司
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