基于近年来微动技术的应用成果,提出了可用于评价微动技术观测台阵探测能力的两项指标:探测深度、纵向分辨力.其中,影响台阵探测深度的主要因素为台阵边长和检波器主频;影响观测台阵纵向分辨力的主要因素为台阵形式和采样间隔.在对比试验的基础上,建立了微动技术在厚覆盖区实现大探测深度的技术路线,并在乌鲁木齐八钢石化断裂西段进行了验证,探测成果与已知资料相符,证明试验结论有效可靠.
Based on the application results of microtremor technology in recent years,this paper proposes two indicators that can be used to evaluate the detection ability of microtremor observation:detection depth and longitudinal resolution.A-mong them,the main factors affecting the detection depth of the observation are the side length of the observation and the dom-inant frequency of the geophone;The main factors affecting the longitudinal resolution of the observation observation are obser-vation form and sampling interval.Based on comparative tests,the technical route of microtremor technology to achieve large detection depth in a thick coverage area is established,and it is verified in the west section of the petrochemical fault of Urumqi Bagang-Shihua.The detection results are consistent with the known data,which proves that the test conclusion is effective and reliable.