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一、前言在水利电力部《水工隧洞设计规范(SD134—84)修订说明》中提到:“固结灌浆是加固围岩,提高围岩承载能力和减少渗漏的重要措施,特别是当围岩裂隙较发育的洞段进行固结灌浆对围岩稳定,保证隧洞安全运行,延长隧洞使用年限起着重要作用”。工程实践表明,经围岩固结灌浆后,围岩弹性抗力系数可提高1.33～4.0倍(见表1),由此可见,围岩固结灌浆能提高围岩承载能力是无疑的。当考虑隧洞衬砌与围岩联合受力作用时,对能适
I. Preface It is mentioned in “Revised Description of Hydraulic Tunnel Design Specification (SD134-84)” of the Ministry of Water Resources and Electric Power that “consolidation grouting is an important measure to reinforce surrounding rock, improve bearing capacity of surrounding rock and reduce leakage, especially when The consolidation grouting in the relatively developed rock fracture of the surrounding rock plays an important role in stabilizing the surrounding rock, ensuring the safe operation of the tunnel and extending the service life of the tunnel. ” Engineering practice shows that the elastic resistance coefficient of surrounding rock can be increased by 1.33-4.0 times (see Table 1) after consolidation grouting by surrounding rock. It can be seen that the consolidation grouting of surrounding rock can improve the carrying capacity of surrounding rock is no doubt. When considering the tunnel lining and surrounding rock joint force, the right to