Ecological grass brick for loose sandy soil in rare earth mining area and preparation and use method of ecological grass brick
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A rare earth mining area and ecological technology, applied in the field of ecological grass bricks in rare earth mining areas, can solve the problems of poor sustainability, poor repair effect, loss, etc., and achieve the effect of changing physical and chemical properties and obvious soil-fixing effect
Active Publication Date: 2022-07-22
NAT RESERACH CENT OF GEOANALYSIS
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Problems solved by technology
In the past, soil remediation in ion-type rare earth mining areas, vegetation restoration was mainly based on foreign soil and a small amount of restoration materials, which did not fundamentally change the prominent problems such as water retention and physical and chemical pro
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preparation example Construction
[0028] In a first aspect, a method for preparing ecological straw bricks for rare earth mining areas, comprising the following steps:
[0029] The corncob is pulverized to a particle size of less than 2cm, controlled at a relatively low temperature of 150-180°C, and anaerobic pyrolysis is performed to form corncob biomass carbon;
[0030] Pulverize the pine bark to a particle size of less than 5cm; the pine bark pulverized product: corncob biomass charcoal: the bark fiber is fully mixed according to the mass ratio of 5:3:2 to obtain the mixed material A, and the mixed material A is mixed at a humidity greater than 5:3:2. 70% of the environment, or spray water every 4-6 hours to moisturize and store for 2-3 days to soften;
[0031] Mix attapulgite: lime: water-retaining agent (sodium polyacrylate): binder (bean essence glue, skin and bone glue) in a mass ratio of 35-40:20-25:10-15:30-35, and mix it with The water is fully stirred to form a viscous liquid, and then mixed into t...
Embodiment 1
[0045] Example 1: On a loose side slope with a slope length of 5 meters in a rare earth mining area, the distance between the slope lengths is 1.5 meters, and 4 transverse grooves are opened, the groove depth is 50cm, and the width is 8cm. , the height of the stack is 5cm, the length of the top side is 5cm, the length of the bottom side is 25cm, the length of the upper side (the length of the long side of the outer stack) is 30cm, the length of the bamboo pole for fixing is 60cm, the ecological straw brick is laid with iron wire, and the soil for filling the ditch is original sandy soil, alkaline After the stone waste crushed material and the organic planting soil are fully mixed and landfilled according to the mass ratio of 4:2:4, after watering to allow the ecological grass bricks to fully absorb water, wait for 5 days and then cover the soil with the mixed soil and water, and repeat this for 3 times. The cuttings of jasmine, the spacing of the jasmine flowers is 25cm, and th...
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Abstract
The invention belongs to the technical field of water and soil loss treatment and soil improvement, and particularly relates to an ecological grass brick and method for a rare earth mining area. The preparation method comprises the following steps: crushing corncobs until the particle size is less than 2cm, and performing anaerobic pyrolysis at 150-180 DEG C to form corncob biomass charcoal; crushing the pine barks until the particle size is less than 5cm; uniformly mixing crushed pine barks, corncob biomass charcoal and bark fibers according to a mass ratio of 5: 3: 2 to obtain a mixed material A, and storing the mixed material A in an environment with the humidity of more than 70% for 2-3 days; mixing attapulgite, lime, a water-retaining agent and an adhesive according to a mass ratio of (35-40): (20-25): (10-15): (30-35), then mixing with water, then mixing into the mixed material A, and pressing to form an ecological grass brick with a preset shape; the ecological grass brick in the preset shape comprises a deep cutting tongue page and an extension stack, and the extension stack is connected with the top of the deep cutting tongue page to form right-angle turning extension. The ecological grass brick has the advantages that the ecological grass brick is easy to manufacture and use, waste is comprehensively utilized, the water and soil conservation effect on the loose sandy soil side slope of the rare earth mining area is good, the physical and chemical properties of sandy soil are improved, and the geological disaster risks such as landslide are counteracted.
Description
technical field [0001] The invention relates to the technical field of soil erosion and soil improvement treatment, in particular to an ecological grass brick and a method for rare earth mining areas. Background technique [0002] The description of the background technology in the present invention belongs to the related art related to the present invention, and is only used to illustrate and facilitate the understanding of the invention content of the present invention, and should not be construed as the applicant's explicit belief or presumption that the applicant believes that the present invention is the first application of the present invention. the prior art of the filing date. [0003] The ionic rare earth minerals in my country are mainly distributed in Ganzhou, Jiangxi. The mining and extraction technologies are mainly pool leaching, heap leaching and in-situ leaching. In the leaching process, a large number of high-concentration ammonium sulfate and sulfuric acid...
Claims
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