微动探测方法在烟台地区典型岩溶勘察中的应用

Application of microtremor survey method in typical karst exploration in the Yantai area

摘要:

烟台地区作为典型的岩溶发育区，其复杂的地质构造和隐伏岩溶形态对工程安全构成显著威胁。传统岩溶勘察手段（如钻探、地质雷达等）受限于分辨率不足、成本高昂或适用场景受限等问题，难以满足精细化探测需求。本研究以微动探测方法为核心，针对烟台地区岩溶发育的复杂性，研究团队选用了合理可行的微动探测阵列布设方案，采用微动谱比法分析地层结构，并结合地质钻孔数据进行验证，系统探讨了该方法在岩溶勘察中的适用性与技术优势。实际应用表明，该方法可有效识别隐伏溶洞及岩溶塌陷隐患体，提升探测精度。

Abstract:

As a typical karst development area， the Yantai area faces significant challenges to engineering safety due to its complex geological structures and hidden karst formations. Traditional exploration methods （e.g.， drilling， ground-penetrating radar） are constrained by limitations such as insufficient resolution， high costs， or restricted applicability， making them inadequate for refined detection needs. This study focuses on the microtremor survey method and addresses the complexity of karst development in the Yantai area. The research team selected a reasonable and feasible microtremor detection array layout scheme， employed the microtremor spectral ratio method to analyze the stratum structure， and verified the results using geological drilling data. Systematic investigations demonstrate the method’s applicability and technical advantages in karst exploration. Field applications confirm its effectiveness in identifying buried caves and karst collapse hazards， significantly enhancing the detection accuracy.