Reclamation method for sunk paddy field caused by mining in mountainous regions

A coal mining subsidence and paddy field technology, which is applied in the direction of soil preparation methods, soil lifting machinery, agricultural machinery and tools, etc., can solve the problems of insufficient topsoil protection, restore and improve the biological environment of farmland, and improve applicability and operability , the effect of protecting land resources

Active Publication Date: 2013-04-17
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

The invention can restore the use of the cultivated land damaged by the earthquake and reach a higher level of production as soon as possible, form a stable self-sustaining farmland ecosystem, increase the content of soil microorganisms, improve the physical and chemical properties of t

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  • Reclamation method for sunk paddy field caused by mining in mountainous regions
  • Reclamation method for sunk paddy field caused by mining in mountainous regions

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Embodiment Construction

[0021] The present invention proposes a specific embodiment of a method for reclamation of cracks in paddy field subsidence caused by coal mining in mountainous areas in Southwest China. The detailed description is as follows in conjunction with the accompanying drawings:

[0022] The present invention first carries out on-the-spot survey of subsidence floor leakage paddy field before carrying out reclamation. Determine the location and range of cracks that cause water leakage in paddy fields, investigate the environment of the land where the cracks are located, design the topsoil stacking position, calculate the amount of water-retaining materials and soil backfill, prepare mud, and carry out reclamation and repair. The embodiment of the method for reclamation of cracks in paddy fields subsided by coal mining in southwest mountainous areas of the present invention is carried out in late winter or early spring 1-3 months before rice planting, and then biological means are used ...

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Abstract

The invention relates to a reclamation method for a sunk paddy field caused by mining in mountainous regions and belongs to the technical field of improvement and utilization of environment, ecology and damaged fields. The method includes: performing topsoil stripping to fissured positions where fissures are created by mining sinking and lead to water leakage of the paddy field; covering water holding materials on fissured areas after topsoil stripping; compacting the covered water holding materials, pouring slurry and standing; performing topsoil backfilling and grinding to the fissured areas after slurry pouring and standing, and flattening to enable the fissured areas to be a whole with pieces of the paddy field around the fissured areas; and irrigating, nourishing and improving the paddy field after backfilling and grinding. By the method, the cultivation land where the fissures are created by mining sinking and lead to water leakage of the paddy field can restore the paddy field utilization mode and reach production level of a normal paddy field as soon as possible, a stable self-maintaining farmland ecological system can be formed, a paddy field protecting system can be formed, soil microbial content can be increased, physicochemical property of soil can be improved, and benign farmland ecological system circulation can be formed.

Description

technical field [0001] The invention belongs to the technical field of environment, ecology and abandoned land treatment and utilization, and in particular relates to a method for reclamation of cracks in paddy fields subsided by coal mining in mountainous areas. Background technique [0002] China's coal resources are mainly distributed in the central, eastern, and western regions. The coal resources in the southwest region are mainly distributed in Yunnan, Guizhou, Chongqing, Sichuan and other places. At the same time, the southwest region is one of the regions where rice is most widely distributed in China. Large coal-grain compound area. It is an indisputable fact that a large amount of cultivated land is occupied and destroyed during coal mining. The contradiction between national economic development and human survival requirements for food production inevitably appears in various coal-grain compound regions. Coordinating the contradiction between the two, while coal...

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Application Information

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IPC IPC(8): A01B79/00A01B77/00
Inventor 胡振琪李晓静
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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