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Method for stripping rock layer of end slope

A technology of rock formations and end sides, which is applied in earth cube drilling, open-pit mining, special mining, etc. It can solve the problem of many steps and sections, reduce the stripping ratio and improve the efficiency of transportation operations.

Inactive Publication Date: 2013-04-17
CHINA SHENHUA ENERGY CO LTD +1
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Problems solved by technology

[0004] The present invention provides a method for stripping the end-side rock strata to solve the defect of many standard steps in the prior art and to improve work efficiency

Method used

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  • Method for stripping rock layer of end slope
  • Method for stripping rock layer of end slope

Examples

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Embodiment Construction

[0017] figure 1 is the structural schematic diagram of the original standard steps of the end gang, figure 2 Schematic diagram of the parallel step structure for implementing the end-side rock formation stripping method provided by the embodiment of the present invention. Embodiments of the present invention provide a method for stripping end rock formations, such as figure 1 with figure 2 As shown, the method includes:

[0018] Step a, from the highest point of the rock formation, more than three standard steps 2 are peeled off in sections to form a new step, that is, the back step 3 of the amalgamation.

[0019] The merging section refers to the operation process of compressing multiple steps into one step by horizontally advancing and deeply advancing multiple steps. A single-bucket truck can be used to merge standard steps 2. Taking three standard steps 2 each time as an example, first advance deeply from top to bottom, and then advance along the horizontal direction...

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Abstract

The invention discloses a method for stripping a rock layer of an end slope, and the end slope comprises a rock layer including a plurality of standard steps and a coal layer under the rock layer. The method comprises the steps as follows: combining and stripping more than three standard steps down from a highest point of the rock layer to form a new step; and continuing to combine and strip more than three standard steps down from the new step until stripping the coal layer. According to the method, more than three standard steps formed on the rock layer are combined each time, each combination operation corresponds to a transport channel, fewer transport channels are configured, the end slope transport efficiency is improved, and the stripping ratio is reduced at the same time.

Description

technical field [0001] The invention relates to side-side coal mining technology, in particular to a method for stripping side-side rock formations. Background technique [0002] In the side-wall mining of open-pit coal mines, the standard steps formed by the rock strata above the coal seam are usually first stripped to expose the coal seam before mining. [0003] In the process of peeling off the standard steps of the end side, the existing standard steps need to set up more side roads for transportation, the work efficiency is low, the distance between the bottom border and the side side is relatively long, and the amount of side side coal that can be recovered is small . Contents of the invention [0004] The invention provides a method for stripping end-side rock formations, which can solve the defect of many merging points of standard steps in the prior art and improve work efficiency. [0005] The present invention provides a method for peeling off rock formations ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C47/00
Inventor 罗怀廷胡存虎张新志翟正江张亮张丁许晨刘爱兄杨国华刘海平
Owner CHINA SHENHUA ENERGY CO LTD
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