摘要
利用TRT6000超前探测系统对田兴铁矿正在掘进中的巷道前方地质情况进行探测,并将探测结果与实际揭露的水文地质情况进行对比,验证了TRT系统的可靠性。利用FLAC-3D对破碎带下的施工巷道进行了施工未注浆及注浆的巷道稳定性分析,通过对位移、应力以及剪切应变增量的分析可知,巷道注浆后,有效地抑制了巷道的顶部的位移沉降并且从应力分析可知,巷道的承载能力增强,但巷道的剪切应变增量分布集中区却减少,巷道注浆效果明显,巷道的稳定性得到提高。通过压水试验和掘进观察方法检验了注浆治水效果,治水效果良好。
TRT6000 fore detection system is used to detect the geological conditions in front of the roadway. The reliability of TRT system is verified by comparing the detection results and the practical hydrogeological conditions. FLAC-3D is used to analyze the stability of roadway under construction with grouting and without grouting. The analysis of displacement, pressure and shear strain increment shows that the displacement settlement at the top of roadway is effectively inhibited after grouting. Through the stress analysis, the, bea, ring capacity of roadway is enhanced but the shear strain increment concentration area in roadway reduced. The results show that the effect of grouting is obvious and the stability of roadway is improved. Water pressure test and observation method of tunneling are used to test the water grouting effect with good water control results obtained.
出处
《化工矿物与加工》
CAS
北大核心
2016年第8期49-53,共5页
Industrial Minerals & Processing
基金
河北省自然科学基金资助项目(NO.E2015209260)
关键词
TRT超前探测
巷道稳定性
注浆
数值模拟
advanced detection
tunnel stability
grouting
numerical simulation
