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黄绵土试验小区中,在表土中喷洒浓度为20%的结皮试剂溶液,然后进行人工模拟降雨,1周后人工结皮形成。连续对人工结皮的部分物理性状进行测定,结果发现人工结皮厚度达12.00mm,抗剪强度达14kPa,抗压强度达0.84kg/cm2,容重达1.4g/cm3,大大增强了结皮的抗冲性和抗蚀性。对人工结皮进行历时60min,雨强为0.8mm/min的人工模拟降雨试验。经测定,其径流含沙量最大值为6.3kg/m3,径流稳定入渗率为0.36mm/min,抵抗土壤侵蚀效果明显,为径流的利用解决了泥沙问题。
In the loessial soil test plot, 20% of the crust reagent solution was sprayed on the topsoil, artificial rainfall was simulated, and artificial crust was formed after 1 week. The results showed that the thickness of the artificial skin was 12.00mm, the shear strength was 14kPa, the compressive strength was 0.84kg / cm2 and the weight was 1.4g / cm3, which greatly enhanced the knot Scratch and corrosion resistance of the skin. The artificial crust was lasted for 60min, rainfall intensity of 0.8mm / min artificial simulated rainfall test. The measured runoff sediment concentration of 6.3 kg / m3 maximum, steady runoff infiltration rate of 0.36mm / min, to resist soil erosion effect is obvious, the use of runoff to solve the sediment problem.