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Construction method for ecological protection of expansive soil slope by using phosphogypsum and microbial mineralization technology
The invention discloses a construction method for ecological protection of an expansive soil slope by utilizing phosphogypsum and a microbial mineralization technology, which is characterized by comprising the following steps: (1) putting a bacillus pasteurianus into a culture medium to prepare a microbial solution, and mixing urea, calcium chloride and water to prepare a cementing solution; (2) mixing phosphogypsum, fly ash and soil into a mixture, then uniformly mixing and stirring the mixture, the microbial solution and the water, then adding the cementing solution and mixing with water toprepare an improved mixture slurry; and (3) spraying the improved mixture slurry to the surface of the side slope by adopting a wet spraying method, and covering a non-woven fabric and binding firmly.The method disclosed by the invention can meet the requirements of ecological greening of a slope, rainwater erosion resistance and shallow landslide prevention, can consume phosphogypsum, reduce theoccupation of cultivated land, and can promote plant growth with effective phosphorus. The low-cost culture medium is adopted for the microbial culture, so that the use cost is reduced, the microorganisms-modified phosphogypsum can solidify harmful elements, and the pollution to the environment is reduced.
一种利用磷石膏与微生物矿化技术用于膨胀土边坡生态防护的施工方法，其特征是该方法包括：（1）将巴氏芽孢杆菌放入培养基中配制成微生物溶液，将尿素、氯化钙与水混合配制成胶结液；（2）将磷石膏、粉煤灰和土配制成混合料，然后将混合料、微生物溶液和水混合搅拌均匀，再加入胶结液与水混合配制成改良混合料泥浆；（3）采用湿喷方法，将改良混合料泥浆喷射至边坡表面，覆盖无纺布并绑扎牢固。该方法可以满足边坡生态绿化、抗雨水冲刷并防止浅层滑坡的要求，并可消耗磷石膏，减少对耕地的占用，且有效磷可以促进植物生长。微生物培养采用廉价培养基，降低了使用成本，经微生物改良后的磷石膏，可以固化有害元素，降低对环境的污染。
Construction method for ecological protection of expansive soil slope by using phosphogypsum and microbial mineralization technology
The invention discloses a construction method for ecological protection of an expansive soil slope by utilizing phosphogypsum and a microbial mineralization technology, which is characterized by comprising the following steps: (1) putting a bacillus pasteurianus into a culture medium to prepare a microbial solution, and mixing urea, calcium chloride and water to prepare a cementing solution; (2) mixing phosphogypsum, fly ash and soil into a mixture, then uniformly mixing and stirring the mixture, the microbial solution and the water, then adding the cementing solution and mixing with water toprepare an improved mixture slurry; and (3) spraying the improved mixture slurry to the surface of the side slope by adopting a wet spraying method, and covering a non-woven fabric and binding firmly.The method disclosed by the invention can meet the requirements of ecological greening of a slope, rainwater erosion resistance and shallow landslide prevention, can consume phosphogypsum, reduce theoccupation of cultivated land, and can promote plant growth with effective phosphorus. The low-cost culture medium is adopted for the microbial culture, so that the use cost is reduced, the microorganisms-modified phosphogypsum can solidify harmful elements, and the pollution to the environment is reduced.
一种利用磷石膏与微生物矿化技术用于膨胀土边坡生态防护的施工方法，其特征是该方法包括：（1）将巴氏芽孢杆菌放入培养基中配制成微生物溶液，将尿素、氯化钙与水混合配制成胶结液；（2）将磷石膏、粉煤灰和土配制成混合料，然后将混合料、微生物溶液和水混合搅拌均匀，再加入胶结液与水混合配制成改良混合料泥浆；（3）采用湿喷方法，将改良混合料泥浆喷射至边坡表面，覆盖无纺布并绑扎牢固。该方法可以满足边坡生态绿化、抗雨水冲刷并防止浅层滑坡的要求，并可消耗磷石膏，减少对耕地的占用，且有效磷可以促进植物生长。微生物培养采用廉价培养基，降低了使用成本，经微生物改良后的磷石膏，可以固化有害元素，降低对环境的污染。
Construction method for ecological protection of expansive soil slope by using phosphogypsum and microbial mineralization technology
一种利用磷石膏与微生物矿化技术用于膨胀土边坡生态防护的施工方法
LI ZHIQING (author)
2020-07-17
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
/
A01G
Gartenbau
,
HORTICULTURE
/
C04B
Kalk
,
LIME
/
C12N
Mikroorganismen oder Enzyme
,
MICROORGANISMS OR ENZYMES
/
C12R
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C-C12Q, RELATING TO MICROORGANISMS
,
Index-Schema in Verbindung mit den Unterklassen C12C-C12Q, bezüglich Mikroorganismen
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