煤矿隐伏小断层的瓦斯抽采钻孔探测方法

薛洪来; 温哲

doi:10.3969/j.issn.1001-1986.2021.03.009

煤矿隐伏小断层的瓦斯抽采钻孔探测方法

薛洪来^1,,
温哲²

1.
常州大学环境与安全工程学院, 江苏常州 213164
2.
常州大学石油化工学院, 江苏常州 213164

基金项目:

煤矿安全高效开采省部共建教育部重点实验室开放基金项目 JYBSYS2020210

详细信息

作者简介:
薛洪来, 1988年生, 男, 河南杞县人, 博士, 讲师, 从事矿井瓦斯地质、瓦斯灾害治理方向的研究.E-mail: xuehonglai@cczu.edu.cn

中图分类号: TD712
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出版历程
- 收稿日期: 2020-10-17
- 修回日期: 2021-01-13
- 发布日期: 2021-06-24

The concealed small faults detection based on gas drainage boreholes along and cross the coal seam

XUE Honglai^1,,
WEN Zhe²

1.
School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China
2.
School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China

摘要

摘要: 断层对煤与瓦斯突出危险性影响较大，准确探测断层位置对预防灾害具有重要作用。目前，煤矿进行采掘作业之前，施工大量瓦斯抽采钻孔，但是这些钻孔包含的地质信息未被充分重视，为此，提出了利用穿层、顺层瓦斯抽采钻孔群探测隐伏断层的技术方法。通过建立瓦斯抽采钻孔探测断层的数学模型，计算断层面、煤层底板的三维坐标，通过绘制煤层底板等高线图及其三维图，确定断层位置、落差、产状和断层性质等基础参数。基于Matlab软件的图形用户界面（GUI）工具，编写了瓦斯抽采钻孔探测断层的软件，实现了断层信息的可视化，为准确判识断层提供了技术平台。通过钻孔定位、模型计算、图像处理、断层识别等综合技术方法，成功实现了利用瓦斯抽采钻孔进行隐伏小断层探测。
- 地质探测 /
- 小断层 /
- 煤巷 /
- 瓦斯抽采 /
- 钻孔
Abstract: The faults have great influence on coal and gas outburst disasters, and accurate detection of faults location is very important to prevent such disasters. At present, large number of gas drainage boreholes were drilled in coal mines, but the geological information contained in these boreholes is not fully paid attention to, thus the method to detect concealed faults by gas-drainage boreholes was proposed. In this paper, by establishing a mathematical model for fault detection based on gas drainage drilling, a three-dimensional coordinate of fault planes and coal seam floors is calculated, and basic parameters such as fault location, drop, attitude and fault properties are determined by drawing contour maps of coal seam floors and their three-dimensional maps. Based on the graphical user interface(GUI) of Matlab, a software for fault detection by gas drainage drilling is designed to visualize fault information and provide a technical platform for accurate fault identification. The technical method of detecting small hidden faults by gas drainage drilling is successfully implemented through a combination of drilling location, model calculation, image processing and fault identification.
- geological exploration /
- small fault /
- coal roadway /
- gas drainage /
- drilling borehole

HTML全文

图 1 常规顺层瓦斯抽采钻孔

Fig. 1 The conventional gas drainage boreholes along the coal seam

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图 2 钻孔终孔坐标计算方法

Fig. 2 Schematic diagram of calculating the end borehole coordinates

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图 3 常规煤巷条带穿层钻孔

Fig. 3 The conventional designed scheme of cross drilling in the roadway strips

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图 4 断层走向计算方法

Fig. 4 Calculation of fault strike

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图 5 软件界面

Fig. 5 The software interface

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图 6 顺层钻孔预抽煤巷条带煤层瓦斯布置

Fig. 6 The layout of boreholes along the coal seam for gas-predrainage of roadway strips

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图 7 穿层钻孔预抽煤巷条带煤层瓦斯布置

Fig. 7 The layout of boreholes cross the coal seam for pre-drainage of roadway strips

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图 8 顺层钻孔探测断层三维展示

Fig. 8 3D figure of faults detected by boreholes along the coal seam

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图 9 穿层钻孔探测断层判识

Fig. 9 The figures of fault detected by boreholes cross the coal seam

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图 10 不同孔深误差干扰后煤层底板等高线

Fig. 10 The contour map of coal floor under different drilling deviations

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图 11 顺层瓦斯抽采钻孔与断层落差关系

Fig. 11 The relationship between the boreholes along coal seam and fault throw

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图 12 不同落差断层下煤层底板等高线

Fig. 12 The contour map of coal floor under different fault throw

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表 1 顺层钻孔施工参数

Table 1 The parameters of boreholes along the coal seam

钻孔编号	开孔坐标/m			方位角/(°)	仰角/(°)	设计孔深/m	施工孔深/m
钻孔编号	x	y	z	方位角/(°)	仰角/(°)	设计孔深/m	施工孔深/m
1	0	2.8	1.5	55.6	10.5	24.7	20.9
2	0	2.6	2.0	66.4	11.9	33.5	18.6
3	0	2.4	1.5	70.6	6.0	42.7	19.2
4	0	2.2	2.0	74.9	7.6	52.3	18.2
5	0	2.0	1.5	78.6	3.6	61.3	18.9
6	0	1.8	2.0	81.4	5.3	60.9	18.2
7	0	1.6	1.5	82.7	2.4	60.5	18.8
8	0	1.4	2.0	85.5	4.1	60.3	18.2
9	0	1.2	1.5	86.9	1.2	60.1	18.9
10	0	1.0	2.0	89.8	2.9	60.1	18.3
11	0	0	2.0	90.4	–0.5	60.0	18.9
12	0	–1.0	1.5	92.5	2.1	60.1	18.8
13	0	–1.2	2.0	93.8	–1.8	60.2	19.2
14	0	–1.4	1.5	96.7	0.9	60.4	19.1
15	0	–1.6	2.0	98.0	–3.0	60.7	19.6
16	0	–1.8	1.5	100.8	–0.4	61.1	19.6
17	0	–2.0	2.0	102.1	–4.1	61.5	20.2
18	0	–2.2	1.5	127.0	–3.8	25.1	25.2
19	0	–2.4	2.0	117.6	–8.6	34.2	23.8
20	0	–2.6	1.5	110.2	–2.2	42.6	20.9
21	0	–2.8	2.0	107.0	–5.6	52.5	21.0

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