隧道富水围岩裂隙注浆模型及止水效果数值模拟分析

来源 :The 6th China-Japan Workshop on Tunneling Safety & Risk(CJTS | 被引量 : 0次 | 上传用户:zhengzhidelang
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注浆压力的大小会影响围岩裂隙通道的形成,当注浆压力达到劈裂注浆前为渗透注浆,不会有新的裂隙生成,浆液的扩散半径较小,围岩抗渗透的能力并没有得到较好的改善;当注浆压力达到劈裂注浆时,会有新的裂隙产生,围岩中裂隙会形成连通的裂隙通达,裂隙中的浆液扩散半径较远,此时围岩抗渗透能力得到较好的改善,渗透系数减小;同时注浆压力随着浆液的扩散也是注浆减小的。
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