爆破地震波中S波识别方法及其应用

杨招伟; 卢文波; 高启栋; 陈明; 胡浩然; 严鹏; 王高辉

doi:10.11883/bzycj-2017-0178

爆破地震波中S波识别方法及其应用

doi: 10.11883/bzycj-2017-0178

杨招伟^{1, 2},
卢文波^{1, 2, ,},
高启栋^{1, 2},
陈明^{1, 2},
胡浩然^{1, 2},
严鹏^{1, 2},
王高辉^{1, 2}

1.
武汉大学水资源与水电工程科学国家重点实验室, 湖北武汉 430072
2.
武汉大学水工岩石力学教育部重点实验室, 湖北武汉 430072

基金项目:

国家自然科学基金项目 51779190

国家杰出青年科学基金项目 51125037

详细信息

作者简介:
杨招伟(1960—)，男，博士研究生

通讯作者:
卢文波, wblu@whu.edu.cn

中图分类号: O389
计量
- 文章访问数: 5562
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- 被引次数: 11
出版历程
- 收稿日期: 2017-05-18
- 修回日期: 2017-10-31
- 刊出日期: 2018-01-25

A S-wave phase picking method for blasting seismic waves and its application in engineering

YANG Zhaowei^{1, 2},
LU Wenbo^{1, 2
, ,},
GAO Qidong^{1, 2},
CHEN Ming^{1, 2},
HU Haoran^{1, 2},
YAN Peng^{1, 2},
WANG Gaohui^{1, 2}

1.
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, Hubei, China
2.
Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering Ministry of Education, Wuhan University, Wuhan 430072, Hubei, China

摘要

摘要: S波震相初至时刻的精确识别是岩石动力学参数反演的关键环节。其拾取的精度和速度直接影响到岩石动力学参数反演的精度和效率。对S波的识别研究大多都集中在地震领域，现有方法难以有效的识别工程尺度下的爆破地震波S波的到时。本文中拟提出一种适用于工程尺度下S波的识别方法。该方法不对振动信号进行滤波处理，采用短时平均过零率、偏转角、偏振度和横向能量与总能量比值等4个识别参数对S波进行识别。结合丰宁抽水蓄能电站地质勘探洞爆破实验实测数据识别效果与数值模拟结果表明：该方法在工程尺度下的识别误差小于3%。该算法能较好地适用于工程尺度下S波初至时刻进行识别。
- S波识别 /
- 岩石力学参数 /
- 偏转角 /
- 偏振度
Abstract: The initial and precise identification of the S-wave phase is a crucial step in the inverse analysis of dynamical mechanical parameters of rock mass. The efficiency and precision in this identification is directly linked with those of the dynamical parameters' inversion. Currently, the S-wave identification focuses mostly on the earthquake science and it is still difficult to effectively identify the S-wave phase on an engineering scale. This paper proposes a method that can be effectively used in engineering. Here, by using the four characteristic functions including the short time average cross zero ratio, the deflection angle, the degree of polarization and the ratio of the transversal to the total energy, this method identified the S-wave phase, without having to go through the filtering processes. Combining the identification result of some data from the blasting field experiments in the Fengning hydro power station with our numerical simulation, we validated this method, showing that its relative error is below 3% and that the method is effective, simple and suitable for the S-wave phase identification on the engineering scale.
- S-wave identification /
- mechanical parameters of rock mass /
- deflection angel /
- degree of polarization

HTML全文

图 1 S波初至时刻前后波形变化图

Figure 1. Change of waveforms before and after S-wave arrival

下载: 全尺寸图片幻灯片

图 2 计算模型示意图

Figure 2. Sketch of calculation model

下载: 全尺寸图片幻灯片

图 3 不同爆心距下S波识别效果图

Figure 3. S-wave identification at different distances from explosion center

下载: 全尺寸图片幻灯片

图 4 竖直孔爆破实验设计示意图

Figure 4. Schematic diagram of the site blasting experiment

下载: 全尺寸图片幻灯片

图 5 典型测点S波识别效果图

Figure 5. S-wave identification for typical measuring point in experiment

下载: 全尺寸图片幻灯片

表 1 统计平均值

Table 1. Statistical averages

P波震相初至	P波尾波	S波震相初至
F₂=0	0＜F₂＜1	F₂=1
F₃=1	0＜F₃＜1	F₃=1
F₄=0	0＜F₄＜1	F₄=1

下载: 导出CSV

表 2 岩体物理参数

Table 2. Physical parameters of rock mass

ρ/(kg·m^-3)	E/GPa	ν	σ_b/MPa	损伤参数		K_Ⅰ/(MN·m^-3/2)	λ/(kg·J^-1)
ρ/(kg·m^-3)	E/GPa	ν	σ_b/MPa	k	m	K_Ⅰ/(MN·m^-3/2)	λ/(kg·J^-1)
2 530	40	0.22	2	2.33×10²⁴	7	0.92	0.000 1

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表 3 实验数据与理论模型结果对比

Table 3. Comparison between experimental and theoretical data

R/m	t/ms		ε/%
R/m	实验	理论	ε/%
10	3.85	3.92	1.3
15	5.90	5.89	0.3

下载: 导出CSV

表 4 竖直钻孔爆破实验参数

Table 4. Parameters of blasting experiment

炮孔编号	起爆位置	D/mm	h/cm	d/mm	L/cm	L_b/cm	m/kg
Ⅰ-1	上、底部	76	800	50	600	200	12.0
Ⅰ-2	底部	76	800	50	600	200	12.0
Ⅱ-1	中部	76	600	50	420	180	8.4
Ⅱ-2	底部	76	600	50	420	180	8.4
Ⅲ-1	中部	76	450	50	270	180	5.4
Ⅲ-2	底部	76	450	50	270	180	5.4
注：∅50 mm药卷由2节∅32 mm炸药捆绑而成。

下载: 导出CSV

表 5 实验S波震相初至时刻识别结果

Table 5. S-wave arrival identification in experiment

炮孔编号	t/ms
炮孔编号	1^#	2^#	3^#	4^#	5^#	6^#
Ⅰ-1	431.63	3.25	5.50	8.75	12.13	11.25
Ⅰ-2	899.50	471.13	473.13	476.50	479.88	478.63
Ⅱ-1	1 533.63	1 105.13	1 107.00	1 110.25	1 113.38	1 112.50
Ⅱ-2	1 630.88	1 202.50	1 204.25	1 207.50	1 210.13	1 209.88
Ⅲ-1	2 585.00	2 156.50	2 158.50	2 161.88	2 164.00	2 164.13
Ⅲ-2	3 054.88	2 626.38	2 628.25	2 631.63	2 634.00	633.75

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施引文献

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