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Preparation method of improved substituted surface soil material for open pit coal mine

An open-pit coal mine and topsoil technology, which is applied in the field of land reclamation and ecological reconstruction technology and the field of ecological environment materials, can solve problems such as lack of topsoil resources, and achieve the effect of ensuring normal growth, realizing waste reuse and good effect.

Inactive Publication Date: 2017-05-17
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a preparation method for improving and replacing topsoil materials in open-pit coal mines, to solve the problem of lack of topsoil resources in the reclamation of damaged land by mining in eastern grassland areas, and to use composite bacterial agents to improve the replacement topsoil materials. The formula has the characteristics of rich raw materials, simple configuration and operation, and high nutrient content, which can meet the various nutrients required for plant growth and realize the rapid recovery of the ecological environment in open-pit mining areas

Method used

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  • Preparation method of improved substituted surface soil material for open pit coal mine
  • Preparation method of improved substituted surface soil material for open pit coal mine
  • Preparation method of improved substituted surface soil material for open pit coal mine

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preparation example Construction

[0020] The preparation method that the present invention proposes is used for the surface coal mine improvement replacement topsoil material, comprises the following steps:

[0021] (1) Topsoil, loess and subclay are air-dried to make the water content thereof less than 5%, pass through a 2 mm sieve, and mix according to the following parts by mass to obtain the first mixture:

[0022] Topsoil 33%-40%

[0023] Loess 33%-40%

[0024] Lot clay 20%-33%;

[0025] (2) Take the above-mentioned first mixture as 100 parts, mix the pulverized cattle and sheep manure and corn stalks cut into 1 cm length with the first mixture in the following parts by mass, and mix uniformly to obtain the second mixture:

[0026] Cattle and sheep manure 0.1%-0.5%

[0027] Corn straw 0.1%-0.5%;

[0028] (3) Add water to the above second mixture, the ratio of water to the second mixture is 1:50, mix well to obtain the third mixture;

[0029] (4) Add composite microbial agent in the above-mentioned th...

Embodiment 1

[0044] (1) Air-dry topsoil, loess and sub-clay, make the water content thereof less than 5%, pass through a 2mm sieve, and mix according to the following parts by mass to obtain the first mixture:

[0045] Topsoil is 34%; loess is 33%; loess is 33%;

[0046] (2) Taking the above-mentioned first mixture as 100 parts, mix the pulverized cattle and sheep manure and corn stalks cut into 1 cm length with the first mixture in the following parts by mass, and mix uniformly to obtain the second mixture:

[0047] 0.5% for cattle and sheep manure; 0.5% for corn stalks;

[0048] (3) Add water to the above second mixture, the ratio of water to the second mixture is 1:50, mix well to obtain the third mixture;

[0049] (4) Add composite bacterial agent in above-mentioned third mixture, the ratio of the third mixture and composite microbial agent is 1:0.01%, mix well, obtain the 4th mixture;

[0050] (5) Statically compost the above-mentioned mixture in stacks of 0.9m in length, width and ...

Embodiment 2

[0054] (1) Air-dry topsoil, loess and sub-clay, make the water content thereof less than 5%, pass through a 2mm sieve, and mix according to the following parts by mass to obtain the first mixture:

[0055] Topsoil is 34%; loess is 33%; loess is 33%;

[0056](2) Taking the above-mentioned first mixture as 100 parts, mix the pulverized cattle and sheep manure and corn stalks cut into 1 cm length with the first mixture in the following parts by mass, and mix uniformly to obtain the second mixture:

[0057] 0.1% for cattle and sheep manure; 0.1% for corn straw;

[0058] (3) Add water to the above second mixture, the ratio of water to the second mixture is 1:50, mix well to obtain the third mixture;

[0059] (4) Add composite microbial agent to the above-mentioned third mixture, the ratio of the third mixture to the composite microbial agent is 1:0.005%, mix evenly to obtain the fourth mixture;

[0060] (5) Statically compost the above-mentioned mixture in stacks of 0.9m in lengt...

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Abstract

The invention relates to a preparation method of an improved substituted surface soil material for an open pit coal mine and belongs to the field of ecological environment materials for a land reclamation and ecological reconstruction technology. The material is mainly prepared by mixing the following components in percentage by weight: 30 to 40 percent of surface soil, 30 to 40 percent of loess, 20 to 35 percent of loam, 0.1 to 0.5 percent of cow and sheep dung, 0.1 to 0.5 percent of maize straw and 0.005 to 0.01 percent of complex microbial inoculant. According to the preparation method disclosed by the invention, the substituted surface soil material is improved by using the complex microbial inoculant, so that a remarkable promoting effect on the growing performance of plants is realized. The preparation method disclosed by the invention has positive ecological significance on improving land reclamation of a mining area and provides a microbial technical support for the land reclamation and the ecological reconstruction of the open pit coal mine.

Description

technical field [0001] The invention relates to a method for preparing surface soil materials for improvement in open-pit coal mines, in particular to the improvement of surface soil materials for land reclamation and ecological reconstruction of open-pit mines in areas with thin surface layers, and belongs to the technical field of land reclamation and ecological reconstruction and eco-environmental materials. [0002] technical background [0003] In order to meet the needs of China's rapid economic development, the coal resource mining industry is developing at an unprecedented speed. Since the founding of New China, the country has produced a total of 76.1 billion tons of coal. In 2015, the national coal output was 3.75 billion tons, an increase of 15.9% over 2010. , a decrease of 220 million tons from 3.97 billion tons in 2013, of which coal output from open pit mines accounted for about 11% of coal output. Relevant studies have shown that 10,000 tons of open-pit coal m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04A01G9/10C05G3/80
CPCA01G24/00C05D9/00C05G3/80C05F3/00C05F11/00C05F11/08
Inventor 胡振琪刘雪冉许涛朱琦
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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