摘要
为解决埋深较大或地面条件复杂的地下工程开挖前方不良地质体轮廓探测不易从地面展开的难题,利用地震波"角度+位置"偏移的联合体系探测隧道施工前方不良地质体的形状,通过对地面地震波位置偏移法探测三维形状体的研究分析,论述地震波角度偏移在探测地下三维形状体的理论与重要作用,并借用人眼仿生学的原理进一步阐述角度偏移在地下工程前方探测的合理性与可行性。得出以下结论:角度偏移技术不需占用较大空间,非常适合地下工程开挖掌子面有限空间的前方不良地质体轮廓探测,利用"角度+位置"偏移的联合体系探测软弱岩体取得了很好的实际效果。
It is difficult to detect the contours of the bad geological bodies ahead of the excavation faces of underground works in case of huge overburdens or complex ground surface conditions.The contours of bad geological bodies are detected by means of seismic waves ＂angle ＋ position＂ offset system.The mechanisms and importance of the seismic waves angle offset system in the detection of underground 3D bodies are discussed.The rationality and feasibility of angle offset system in the detection of contours of bad geological bodies in underground works are further presented by means of studying on the mechanisms of ocular bionics.Conclusions drawn are follows： due to the small space needed,the angle offset system is suitable for the detection of the contours of bad geological bodies ahead of the excavation face of underground works;the application of the ＂angle ＋ position＂ offset system in the detection of weak rock mass has achieved good result.
出处
《隧道建设》
2011年第2期161-165,共5页
Tunnel Construction
基金
北京市科技计划课题(Z07090601470701)(D101100049510002)
国家863科技计划课题(2007AA11Z132)
