龙口海域软岩巷道锚注支护试验研究  

Experimental Study of Bolt-Grouting Support System in Soft Rock Roadway of Longkou Sea Area

作　　者：王波[1] 高延法[1] 朱伟[2] 贾君莹[1] 

机构地区：[1]中国矿业大学力学与建筑工程学院,北京100083 [2]煤炭科学研究总院唐山研究院,河北唐山063012

出　　处：《采矿与安全工程学报》2008年第2期150-153,共4页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(50474029);国家“十一五”科技支撑计划重点项目(2006BAB16B00);国家重点基础研究发展计划(973)项目(2006CB202200)

摘　　要：针对龙口海域软岩巷道支护困难的问题,探讨了锚注支护技术在海域软岩巷道中的应用.为了研究注浆加固效果,首先进行了室内岩石注浆加固试验,结果表明,注浆岩体强度比未注浆情况下有了很大程度的提高;然后采用数值模拟软件FLAC3D,对海域软岩巷道锚注支护前后围岩变形情况进行了数值模拟,计算结果表明锚注支护能有效控制海域巷道的变形,并根据计算结果得出了巷道的变形规律;最后进行了现场支护试验,并对锚注支护后的巷道围岩变形进行了监测.监测结果表明,锚注支护能显著提高围岩的强度和承载能力,有效控制海域软岩巷道的损伤变形.Aiming at the difficulty of supporting soft rock wall under sea area, we studied the bolt grouting technique to solve this problem. Firstly, grouting reinforcement experiment was performed in lab to study the support effect. The results show that strength of grouted rock mass is greatly enhanced compared with that of the rock mass without being grouted. Deforma- tion rule of surrounding rocks before and after the bolt grouting is studied by using the numerical software FLAC3D, indicating that the bolt-grouting system is helpful for controlling the deformation of soft roadway in sea area. In-situ supporting test was carried out in a coal mine and rock deformation was also monitored, showing that bolt grouting system can greatly enhance the strength and bearing capacity of surrounding rocks and effectively control damage deformation of soft rock wall under sea area.

关 键 词：软岩巷道 锚注支护 数值模拟 注浆实验 

分 类 号：TU457[建筑科学—岩土工程]