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Topsoil substitute material based on opencast coal mine overburden materials, and preparation method of topsoil substitute material based on opencast coal mine overburden materials

A technology of open-pit coal mines and stripping objects, applied in botany equipment and methods, planting substrates, culture media, etc., can solve problems such as difficult reclamation, insufficient topsoil, and land resources occupied by stripping objects, and is suitable for popularization and use at low cost. Inexpensive, easy-to-source effects

Inactive Publication Date: 2020-03-31
中煤科工集团沈阳设计研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a topsoil substitute material based on open-pit coal mine stripping and its preparation method to solve the problems of lack of topsoil in coal mining areas in the past, resulting in difficulties in reclamation, and the occupation of land resources by stripping

Method used

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  • Topsoil substitute material based on opencast coal mine overburden materials, and preparation method of topsoil substitute material based on opencast coal mine overburden materials
  • Topsoil substitute material based on opencast coal mine overburden materials, and preparation method of topsoil substitute material based on opencast coal mine overburden materials

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preparation example Construction

[0037] This embodiment provides a method for preparing the above-mentioned topsoil replacement material based on strippings of open-pit coal mines. The preparation method includes the following steps:

[0038] The carbonaceous mudstone is subjected to secondary crushing, air-dried, and after passing through a 2mm and 1mm sieve, take the material in the sieve and set aside;

[0039] Air-dry the fine sand, pass through a 2mm and 1mm sieve, take the sieve, and set aside;

[0040] Air-dry the core soil, pass through a 0.5mm sieve, and take the sieved material for later use;

[0041] Air-dry the bottom soil, pass through 1mm and 0.5mm sieves, take the sieve contents, and set aside;

[0042] Carry out secondary crushing of the mudstone, pass through 3mm and 2mm sieves, take the sieved material, and set aside;

[0043] Get the above-mentioned standby carbonaceous mudstone, fine sand, core soil, bottom soil and mudstone in proportion and mix to obtain the first mixture;

[0044] Af...

Embodiment 1

[0049] A topsoil substitute material based on open-pit coal mine strippings, consisting of the following components by weight: 10 parts of core soil, 10 parts of subsoil, 20 parts of mudstone, 10 parts of carbonaceous mudstone, 10 parts of fine sand, and 2 parts of organic fertilizer , 0.5 parts of corn stalks and 0.5 parts of water retaining agent.

[0050]The specific preparation method of the above-mentioned topsoil substitute material is as follows: carry out secondary crushing and air-drying of the carbonaceous mudstone, pass through a 2mm and 1mm sieve, take the sieve, and set aside; air-dry the fine sand, pass through a 2mm and 1mm sieve, and take the sieve Air-dry the core soil, pass through a 0.5mm sieve, and take the under-sieve for use; air-dry the bottom soil, pass through a 1mm and 0.5mm sieve, and take the sieve for use; carry out secondary crushing of the mudstone, pass through After the 3mm and 2mm sieves, take the sieve and set aside; take the above-mentioned ...

Embodiment 2

[0052] A topsoil substitute material based on open-pit coal mine strippings, consisting of the following components by weight: 30 parts of core soil, 30 parts of subsoil, 40 parts of mudstone, 30 parts of carbonaceous mudstone, 30 parts of fine sand, and 5 parts of organic fertilizer , 1 part of corn straw and 1 part of water retaining agent.

[0053] The specific preparation method of the above-mentioned topsoil substitute material is as follows: carry out secondary crushing and air-drying of the carbonaceous mudstone, pass through a 2mm and 1mm sieve, take the sieve, and set aside; air-dry the fine sand, pass through a 2mm and 1mm sieve, and take the sieve Air-dry the core soil, pass through a 0.5mm sieve, and take the under-sieve for use; air-dry the bottom soil, pass through a 1mm and 0.5mm sieve, and take the sieve for use; carry out secondary crushing of the mudstone, pass through After the 3mm and 2mm sieves, take the sieve and set aside; take the above-mentioned reserv...

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Abstract

The invention discloses a topsoil substitute material based on opencast coal mine overburden materials and a preparation method of the topsoil substitute material based on opencast coal mine overburden materials. The topsoil substitute material based on opencast coal mine overburden materials consists of the following components in parts by weight of 10-30 parts of subsoil, 10-30 parts of underlying soil, 20-40 parts of mudstone, 10-30 parts of charcoal mudstone, 10-30 parts of fine sand, 2-5 parts of organic fertilizers, 0.5-1 part of corn straw and 0.5-1 part of a water retaining agent, andis prepared in a mixing form. The components of the topsoil substitute material are easy to obtain and low in cost, so that the topsoil substitute material is suitable for popularization and use.

Description

technical field [0001] The disclosure of the invention relates to the technical field of mining soil treatment, in particular to a topsoil replacement material based on open-pit coal mine strippings and a preparation method thereof. Background technique [0002] In recent years, the production capacity of open-pit coal mines has increased year by year, accounting for about 15% of the national coal production at this stage. The damage to the ecological environment caused by the development of open-pit coal mines has become one of the important problems that our country is currently facing. Open-pit coal mining has seriously damaged the soil layer. Although topsoil stripping has been advocated, the area of ​​the slope and platform of the dump formed by mining is much larger than the original surface area. The lack of topsoil has always been a difficulty in open-pit mine reclamation. At present, the soil for mine reclamation mainly comes from the stripped topsoil produced by m...

Claims

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Application Information

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IPC IPC(8): A01G24/10A01G24/12A01G24/22
CPCA01G24/10A01G24/12A01G24/22
Inventor 杨卓马培忠刘娜盛世博辛建宝
Owner 中煤科工集团沈阳设计研究院有限公司
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