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Method for improving permeability of granite residual soil
The invention belongs to the technical field of foundation reinforcement, and particularly relates to a method for improving the permeability of granite residual soil. The method comprises the steps that reaction liquid and stationary liquid are sequentially poured into the granite residual soil; the reaction liquid is prepared from 0.2 g/L-4. 0g/L of starch, 0.8 g/L-10 g/L of glucose, 0.4 g/L-5. 0g/L of peptone, 0.2 g/L-10.0 g/L of yeast extract, 0.3 g/L-6. 0g/L of sodium chloride, 0.2 g/L-5. 0g/L of dipotassium phosphate and water, and the stationary liquid is prepared from 0.2 mol/L-1. 5mol/L of urea and water. According to the method for improving the permeability of the granite residual soil, under the action of nutrient substances in the reaction liquid, microorganisms in the granite residual soil are massively proliferated, extracellular polymers are generated, soil particles are aggregated and adhered by organic matter, and under the action of urease generated by the microorganisms, the permeability of the granite residual soil is improved. The urea in the reaction liquid is decomposed into ammonium radicals and carbon dioxide, the pH around bacteria is increased, and under the condition of providing calcium ions, water-insoluble calcium carbonate salt is generated to bond surrounding sand grains together; the method has the characteristics of short time for reducing permeability of granite residual soil, good effect and the like.
本申请属于地基加固技术领域，具体涉及一种改善花岗岩残积土渗透性质的方法包括：向花岗岩残积土中依次灌入反应液和固定液；反应液包括0.2g/L~4.0g/L淀粉、0.8g/L~10g/L葡萄糖、0.4~5.0g/L蛋白胨、0.2g/L~10.0g/L酵母提取物、0.3g/L~6.0g/L氯化钠、0.2g/L~5.0g/L磷酸氢二钾以及水，固定液包括0.2mol/L~1.5mol/L的尿素以及水。本申请所提供的改善花岗岩残积土渗透性质的方法在反应液中营养物质的作用下，花岗岩残积土中微生物大量增殖并产生胞外多聚物，使土颗粒发生聚集和被有机质黏附，在微生物所产生的脲酶的作用下，反应液中的尿素被分解为铵根和二氧化碳，同时使细菌周围pH升高，在提供钙离子的情况下，生成不溶于水的碳酸钙盐，将周围沙粒粘结在一起；具有降低花岗岩残积土渗透性时间短，效果好等特点。
Method for improving permeability of granite residual soil
The invention belongs to the technical field of foundation reinforcement, and particularly relates to a method for improving the permeability of granite residual soil. The method comprises the steps that reaction liquid and stationary liquid are sequentially poured into the granite residual soil; the reaction liquid is prepared from 0.2 g/L-4. 0g/L of starch, 0.8 g/L-10 g/L of glucose, 0.4 g/L-5. 0g/L of peptone, 0.2 g/L-10.0 g/L of yeast extract, 0.3 g/L-6. 0g/L of sodium chloride, 0.2 g/L-5. 0g/L of dipotassium phosphate and water, and the stationary liquid is prepared from 0.2 mol/L-1. 5mol/L of urea and water. According to the method for improving the permeability of the granite residual soil, under the action of nutrient substances in the reaction liquid, microorganisms in the granite residual soil are massively proliferated, extracellular polymers are generated, soil particles are aggregated and adhered by organic matter, and under the action of urease generated by the microorganisms, the permeability of the granite residual soil is improved. The urea in the reaction liquid is decomposed into ammonium radicals and carbon dioxide, the pH around bacteria is increased, and under the condition of providing calcium ions, water-insoluble calcium carbonate salt is generated to bond surrounding sand grains together; the method has the characteristics of short time for reducing permeability of granite residual soil, good effect and the like.
本申请属于地基加固技术领域，具体涉及一种改善花岗岩残积土渗透性质的方法包括：向花岗岩残积土中依次灌入反应液和固定液；反应液包括0.2g/L~4.0g/L淀粉、0.8g/L~10g/L葡萄糖、0.4~5.0g/L蛋白胨、0.2g/L~10.0g/L酵母提取物、0.3g/L~6.0g/L氯化钠、0.2g/L~5.0g/L磷酸氢二钾以及水，固定液包括0.2mol/L~1.5mol/L的尿素以及水。本申请所提供的改善花岗岩残积土渗透性质的方法在反应液中营养物质的作用下，花岗岩残积土中微生物大量增殖并产生胞外多聚物，使土颗粒发生聚集和被有机质黏附，在微生物所产生的脲酶的作用下，反应液中的尿素被分解为铵根和二氧化碳，同时使细菌周围pH升高，在提供钙离子的情况下，生成不溶于水的碳酸钙盐，将周围沙粒粘结在一起；具有降低花岗岩残积土渗透性时间短，效果好等特点。
Method for improving permeability of granite residual soil
改善花岗岩残积土渗透性质的方法
MAO QIANG (author) / GUO KAI (author) / ZHANG JIANGWEI (author) / CHENG XIAOHUI (author) / XIANG PENGFEI (author) / WU MAO (author) / ZHOU QUAN (author) / ZHENG WULUE (author) / WANG JIANKUN (author) / WANG LIPING (author)
2024-08-16
Patent
Electronic Resource
Chinese
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