丙凝化灌的若干问题 English Version
Some Problems about Acrylamide Grouting
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摘要: 本文着重论述了丙凝化灌体的抗挤能力,指出丙凝自身的力学强度是决定化灌体抗挤能力的首要因素。岩体裂隙的宽度对化灌体抗挤能力有重要影响,充填在微细裂隙内的丙凝体具有很高的抗挤强度。新老丙凝结合良好,必要时可对已建帷幕进行复灌修补。文中还讨论了水泥-丙凝混合帷幕的设计、丙凝用于固砂止水时的抗挤能力和有关丙凝化灌的配方及浓度等问题。Abstract: In this paper the anti-squeezing ability of fractured rock injected by acrylamide grouts are discussed.This paper points out that the anti-squeezing ability of the grouted rock depends mainly upon the mechanical properties of acrylamide polymer itself, and the width of the fracture of rock has the most important influence upon the anti-squeezing ability of grouted rock.Acrylamide polymer filled in fine fractures possesses very high anti-squeezing ability, the fresh and aged acrylamide polymers bind together perfectly, and therefore the acrylamide gronts can be repeatedly grouted in curtain grouting engineering if necessary. The design of cement-acrylamide mixed curtain, the anti-squeezing ability of acrylamide polymer in consolidation and water proofing of sand, and the formulations and concentrations of acrylamide grouts are discussed in this paper also.
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