地震混沌属性和瞬变电磁法在煤矿陷落柱解释中的应用
Application of Seismic Chaotic Attribute and Transient Electromagnetic Method in Interpretation of Coal Mine Collapse Column
亚东菊1
作者信息
- 1. 河北省煤田地质局物测地质队 河北·邢台 054000;邢台市地球物理技术重点实验室 河北·邢台 054000
- 折叠
摘要
该文基于地震混沌属性和瞬变电磁法两种方法,从地震波形时间剖面、混沌属性变密度、变面积剖面和视电阻率断面等多个角度对陷落柱构造进行识别.结果表明:陷落柱内部岩层结构破碎,在波形时间剖面上表现为弯曲下沉、杂乱无章等波组特征;在混沌属性剖面上,表现为内部属性明显异常于两侧正常煤层;当陷落柱内部岩层破碎含水时,电阻率呈低阻特征;当陷落柱内部岩层胶结程度高且干燥时,电性呈现高电阻率特征.通过巷道开挖资料验证,表明通过地震混沌属性和瞬变电磁法联合应用,提高了陷落柱构造的解释精度,效果突出.
Abstract
In this paper,two methods named seismic chaos attribute method and transient electromagnet-ic method are used to identify the collapse column structure from multiple perspectives such as seismic waveform time profile,chaotic attribute variable density,variable area profile,and apparent resistivity profile.The results show that the fractured structure of the rock layers inside the collapse column exhibits bending,sinking,and disorder on the waveform time profile;on the chaotic attribute profile,the internal attributes are significantly abnormal compared to the normal coal seams on both sides.When the rock lay-er inside the collapse column is fractured and contains water,the resistivity exhibits a low resistance char-acteristic while it exhibits a high resistivity characteristic;when the internal rock layers of the collapse column are highly cemented and dry.Verification of tunnel excavation data shows that the joint applica-tion of seismic chaotic attribute method and transient electromagnetic method can improve the interpreta-tion accuracy of collapsed column structures,and achieve outstanding results.
关键词
陷落柱/地震混沌属性/瞬变电磁法/反射波同相轴/视电阻率Key words
collapse column/chaotic attribute/transient electromagnetic method/reflect waue event/apparent resistivity引用本文复制引用
基金项目
河北省科技厅院士合作重点单位和院士工作站项目()
出版年
2024
NETL
NSTL
万方数据