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Two-stage sand consolidation method based on soybean urease induced calcium carbonate deposition (EICP)
A two-stage sand consolidation method based on soybean urease induced calcium carbonate deposition (EICP) comprises the steps that traditional EICP consolidation is conducted on standard sand through soybean urease liquid and cementing liquid, a sandy soil sample is obtained after compaction and dehairing treatment, then the soybean urease liquid, a calcium chloride solution and a urea solution are sequentially poured to conduct two-stage sand consolidation on the sandy soil sample, and the two-stage sand consolidation result is obtained. Therefore, the solidification strength of the sandy soil is greatly improved; a permeation test and an unconfined compression test are respectively carried out on the solidified sandy soil solidified test block, and the test result shows that the method has an extremely remarkable solidification effect, so that the cementing fluid can be more uniformly distributed in rock and soil, the solidification accuracy and effectiveness are improved, the conversion efficiency is relatively high, and the application prospect is wide. Good application prospects are realized in the aspects of improving the sand strength, preventing seepage and plugging, repairing the surface and the like.
一种基于大豆脲酶诱导碳酸钙沉积(EICP)的二阶段固砂方法，通过大豆脲酶液和胶结液对标准砂进行传统的EICP固化，经击实和刮毛处理后得到砂土试样，再依次灌注大豆脲酶液、氯化钙溶液和尿素溶液对砂土试样进行二阶段的固砂，从而极大提高了砂土的固化强度；对固化后的砂土固化试块分别开展渗透试验和无侧限抗压试验，试验结果表明，本发明具有极为显著的固化效果，使胶结液能够更加均匀地分布在岩石和土壤中，提高了固化的准确性和有效性，并表现出较高的转化效率，在提高砂土强度、防渗封堵、表面修复等方面有较好的应用前景。
Two-stage sand consolidation method based on soybean urease induced calcium carbonate deposition (EICP)
A two-stage sand consolidation method based on soybean urease induced calcium carbonate deposition (EICP) comprises the steps that traditional EICP consolidation is conducted on standard sand through soybean urease liquid and cementing liquid, a sandy soil sample is obtained after compaction and dehairing treatment, then the soybean urease liquid, a calcium chloride solution and a urea solution are sequentially poured to conduct two-stage sand consolidation on the sandy soil sample, and the two-stage sand consolidation result is obtained. Therefore, the solidification strength of the sandy soil is greatly improved; a permeation test and an unconfined compression test are respectively carried out on the solidified sandy soil solidified test block, and the test result shows that the method has an extremely remarkable solidification effect, so that the cementing fluid can be more uniformly distributed in rock and soil, the solidification accuracy and effectiveness are improved, the conversion efficiency is relatively high, and the application prospect is wide. Good application prospects are realized in the aspects of improving the sand strength, preventing seepage and plugging, repairing the surface and the like.
一种基于大豆脲酶诱导碳酸钙沉积(EICP)的二阶段固砂方法，通过大豆脲酶液和胶结液对标准砂进行传统的EICP固化，经击实和刮毛处理后得到砂土试样，再依次灌注大豆脲酶液、氯化钙溶液和尿素溶液对砂土试样进行二阶段的固砂，从而极大提高了砂土的固化强度；对固化后的砂土固化试块分别开展渗透试验和无侧限抗压试验，试验结果表明，本发明具有极为显著的固化效果，使胶结液能够更加均匀地分布在岩石和土壤中，提高了固化的准确性和有效性，并表现出较高的转化效率，在提高砂土强度、防渗封堵、表面修复等方面有较好的应用前景。
Two-stage sand consolidation method based on soybean urease induced calcium carbonate deposition (EICP)
一种基于大豆脲酶诱导碳酸钙沉积(EICP)的二阶段固砂方法
GUO PEIXI (author) / YUAN LUJING (author) / LI GANG (author) / LIU QIE (author) / KOU HONGGANG (author) / XI YU (author) / LIU CONG (author)
2024-11-05
Patent
Electronic Resource
Chinese
| European Patent Office | 2024
| European Patent Office | 2024