瞬变电磁法在采空塌陷灾害中的应用——以神东煤矿采空区调查为例

龚培俐; 李维

doi:10.12090/j.issn.1006-6616.2018.24.03.043

瞬变电磁法在采空塌陷灾害中的应用——以神东煤矿采空区调查为例

doi: 10.12090/j.issn.1006-6616.2018.24.03.043

龚培俐^1,,
李维²

1.
中国地质大学环境学院, 湖北武汉 430074
2.
中国煤炭地质总局水文物测队, 河北邯郸 056500

详细信息

作者简介:
龚培俐(1993-), 女, 硕士, 主要从事环境工程和环境地质等方面的研究工作。E-mail:1194134188@qq.com

中图分类号: P631.325;P642.26
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- PDF下载量: 25
- 被引次数: 0
出版历程
- 收稿日期: 2017-11-10
- 修回日期: 2018-01-28
- 刊出日期: 2018-06-01

APPLICATION OF TRANSIENT ELECTROMAGNETIC METHOD IN COLLAPSE HAZARD OF GOAF: TAKE THE INVESTIGATION OF THE GOAF IN SHENDONG COAL MINE AS AN EXAMPLE

GONG Peili^1
,,
LI Wei²

1.
School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, China
2.
Hydrographic Survey Team of China Coal Geology Administration, Handan 056500, Hebei, China

摘要

摘要: 由人工采矿及天然作用形成的地下空洞是引起地面塌陷、地裂缝等多种环境地质灾害的根源之一。在煤矿开采区，地下空洞主要是煤矿采空区，采空区受水文地质条件和开采时间的影响，呈现积水和不积水状态。利用瞬变电磁法对神东矿区采空区进行了调查勘探，用最原始的归一化二次电位解释采空不积水区及采空积水区，并根据地下空洞发育的时间长短及积水程度的不同，会呈现高阻异常或低阻异常，在视电阻率断面图上呈现出十分显著的特征。给瞬变电磁法勘探应用于采空区及采空积水区的探测提供了实例，对预测和防治采空区引起的塌陷环境地质灾害具有重要意义。
- 神东矿区 /
- 瞬变电磁法 /
- 采空区 /
- 采空积水区 /
- 塌陷地质灾害
Abstract: A large number of unknown goaf areas formed in the random mining area of coal mine area, which are the causes of geological disasters such as ground collapse and ground fissure. In coal mining areas, underground caves are mainly coal mine goaf areas, showing the condition of being filled and not filled with accumulated water under the influence of hydrogeological conditions and exploration time. Due to the influence of hydrogeological conditions and mining time, the goafs present two statuses:filled and not filled with water. By using transient electromagnetic method, the goafs in Shendong mining area were investigated and explored, and the most primitive normalized secondary potential was used to explain the goafs filled and not filled with water. According to the time length of underground cavity development and the level of accumulated water, it will present high or low resistivity anomaly, showing striking features. It provides an example for the application of transient electromagnetic method in the exploration of goaf and goaf filled with water, and it is of great significance to predict and prevent the collapse geological disaster caused by the goaf.
- the Shendong coal mine /
- transient electromagnetic method /
- goaf /
- goaf filled with water /
- collapse geological disaster

HTML全文

图 1 神东矿区位置及构造示意图

Figure 1. Location and structure of the Shendong mining area

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图 2 矩形回线的磁力线及等效涡流环

Tx—发射线框；t—衰减时间
a—稳定磁场的建立；b—磁场的衰减

Figure 2. Rectangular loop lines and equivalent eddy current ring(Tx:Transmission line frame, t: decay time)

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图 3 瞬变电磁法测深工作装置示意图

TX—供电线框；RX—为接收探头；L—线框边长

Figure 3. A schematic diagram of a transient electromagnetic sounding device (TX is the power supply wire frame, RX is the receiving probe, and L is the length of the wire frame)

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图 4 瞬变电磁法资料处理与解释流程图

Figure 4. Flow chart of TEM data processing and interpretation

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图 5 顺层视电阻率切片趋势分析成果图

Figure 5. Results map of trend analysis of bedding apparent resistivity section

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图 6 S30线对应2-2号煤层深度部分测道归一化二次电位(V2/I)剖面图

Figure 6. Profile map of normalized secondary potential (V2/I) of some survey channels in 2-2 coal seam corresponding to Line S30

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图 7 S30线视电阻率断面图

Figure 7. Line S30 apparent resistivity section

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图 8 采空异常区及采空积水异常区综合成果图

Figure 8. Comprehensive map of the abnormal goaf areas and the abnormal goaf areas with accumulated water

下载: 全尺寸图片幻灯片

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