Novel method applicable to treatment of seasonal waterlogged coal-mining subsidence land

A coal mining subsidence and new method technology, applied in the direction of land preparation methods, botanical equipment and methods, applications, etc., can solve problems such as poor drainage and decline in cultivated land quality, improve security capabilities, solve soil source problems, increase Biodiversity Effects

Inactive Publication Date: 2015-04-08
XIAN UNIV OF SCI & TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a new method suitable for the treatment of subsidence land during seasonal waterlogging and coal mining. The "water collection control project" is used to comprehensively balance the water and soil resou

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  • Novel method applicable to treatment of seasonal waterlogged coal-mining subsidence land
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  • Novel method applicable to treatment of seasonal waterlogged coal-mining subsidence land

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Embodiment Construction

[0044] In order to better illustrate the technical idea of ​​the present invention, a certain coal mining subsidence area is taken as an example below for illustration. The coal mining subsidence area is 35 hectares, and the maximum subsidence depth is 3.95 meters. The method of building pits and ponds is used to control the waterlogging problem in the subsidence area. The average annual 24-hour maximum rainfall in the treatment area is 90mm, and the surface runoff coefficient is 0.3.

[0045] 1. Calculation of storage capacity for waterlogging prevention and storage in pits and ponds

[0046] According to the previous formula and the above data, calculate the storage capacity for waterlogging prevention and storage:

[0047] V 1 =10×F×a×P=10×35×0.3×90=9450m 3

[0048] 2. Calculation of water storage capacity required for drought resistance in pits and ponds

[0049] 1) Irrigation quota calculation

[0050] The soil in the treatment area is medium loam, and the dry bulk ...

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Abstract

The invention discloses a novel method applicable to treatment of a seasonal waterlogged coal-mining subsidence land. The method is characterized in that a water collection control project is utilized for comprehensively balancing the water and soil resources in a subsidence area, so as to solve the problem that unsmooth draining in the subsidence land leads to decrease of the quality of cultivated lands; the subsidence land is reconstructed into a quality land capable of draining in case of flooding and irrigating in case of drought. The method has the advantages that 1, a plurality of dispersed water collection pits/ ponds are constructed to achieve the space regulation of the water resources as well as improving the irrigating and flood draining support capacity; 2, the water in the dispersedly constructed pits/ ponds is able to improve the biodiversity of the treatment area; 3, the pits/ ponds construction solves the problem of the earth resources in land reclamation of a bottomland in the subsidence area.

Description

technical field [0001] The invention relates to a new method for treating subsidence land during coal mining with seasonal waterlogging, which solves the problem that the quality of cultivated land decreases due to poor drainage in the subsidence land, and builds the subsidence land into a high-quality farmland that can be drained from floods and irrigated during drought. Background technique [0002] Coal is the most important energy source in our country, and 90% of it is mined through wells. Mining subsidence has caused a large amount of land damage. How to scientifically control subsidence and damaged land is an urgent requirement for the protection of cultivated land and environmental restoration of mining areas in my country. Due to the wide distribution of coal resources in my country, different natural conditions, large differences in resource endowments, and various forms of land damage, a unified governance model cannot be formed. It is necessary to develop suitabl...

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Application Information

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IPC IPC(8): E02B11/00A01B79/00A01G25/00
CPCA01B79/00A01G25/00E02B11/00
Inventor 陈秋计
Owner XIAN UNIV OF SCI & TECH
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