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Pit backfilling engineering technology

A kind of engineering technology, mine pit technology, applied in infrastructure engineering, surface mining, underground mining and other directions, can solve the problems of seepage polluted groundwater, collapse of backfill materials, etc., to achieve the effect of improving stability, good repair effect and ensuring safety

Inactive Publication Date: 2019-10-11
昌鑫生态科技(陕西)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the embodiment of the present invention provides pit backfilling engineering technology to solve the problems in the prior art that rainwater infiltration pollutes groundwater and causes backfilling materials to collapse due to gaps in backfilling materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] According to the embodiment of the present invention, a mine pit in Yulin, Shanxi Province is selected for experimentation, wherein a pit diameter of 125 meters and a depth of 40 meters are selected as the experimental pit 1.

[0047] A pit backfill engineering technology is provided, comprising the following steps:

[0048] Step 1: For the stability of the reinforcement mesh arrangement, it is necessary to clean up the unstable deposits on the side slope and bottom of the pit until the stable rock mass layer is cleaned up, and the deposits shall be reserved for later use;

[0049]Step 2: Set a vertical support column at the center of the pit bottom, the vertical support column adopts a cement column, and the vertical support column is fixed by a pile driver. The height of the vertical support column is slightly greater than the depth of the pit, and the vertical support column The lower end extends into the ground and the height is 1 / 4 of the length of the vertical sup...

Embodiment 2

[0064] According to the embodiment of the present invention, the mine pit in Yulin area, Shanxi Province is selected to carry out the experiment, wherein a mine pit with a diameter of 152 meters and a depth of 51 meters is selected as the experimental pit 2, adjacent to the experimental pit 1.

[0065] A pit backfill engineering technology is provided, comprising the following steps:

[0066] Step 1: For the stability of the reinforcement mesh arrangement, it is necessary to clean up the unstable deposits on the side slope and bottom of the pit until the stable rock mass layer is cleaned up, and the deposits shall be reserved for later use;

[0067] Step 2: Set a vertical support column at the center of the pit bottom, the vertical support column adopts a cement column, and the vertical support column is fixed by a pile driver. The height of the vertical support column is slightly greater than the depth of the pit, and the vertical support column The lower end extends into the...

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Abstract

The embodiment of the invention discloses a pit backfilling engineering technology. Unstable sediments are cleaned at a side slope and a pit bottom in a pit, and reinforcing mesh rows are paved on theside slope and the pit bottom, so that a backfilling material and the side slope can be stably connected, and the stability of pit backfilling is ensured; impermeable geomembranes are paved on the reinforcing mesh rows, so that rainwater entering the pit is prevented from leaking to the side slope or downwards leaking to influence underground water, and the safety of a peripheral water environment is ensured; through layered arrangement, the risk of directly collapsing the backfilling material in the pit can be greatly reduced; and horizontal support pillars and the reinforcing mesh rows arearranged between layers, so that a supporting effect can be achieved on sinking and collapsing on the upper part, and the occurrence of the phenomenon of large-area collapsing is prevented. Accordingto the pit backfilling engineering technology adopted by the invention, the stability of the backfilled pit is greatly improved; the impermeable geomembranes are arranged so as to prevent the rainwater from leaking outside; and a vegetable layer is arranged on the surface of the pit, so that the backfilling material can be integrated with the pit, and a remediation effect is good.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of pit restoration, and specifically relates to pit backfilling engineering technology. Background technique [0002] In the mining process of coal and various mineral resources, large and small mine pits will be produced. If these mine pits cannot be backfilled in time, water storage will occur after rainfall. Water storage may cause landslides, water seepage, mudslides, etc. A variety of natural disasters not only destroy the original geological features, but also may endanger personal and property safety. [0003] In order to solve the problems that the above-mentioned pits produce, people begin to study backfilling the pits. In the prior art, the solid waste is usually backfilled directly into the mine pit. There are a large number of gaps in the backfill material, and the rainwater entering the mine pit will enter the groundwater through infiltration, and the pollutants in the...

Claims

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Application Information

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IPC IPC(8): E21C41/32E02D31/00
CPCE02D31/004E21C41/32
Inventor 王永春王海涛
Owner 昌鑫生态科技(陕西)有限公司
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