地震研究

利用黑岱沟露天煤矿的爆破资料,开展黑岱沟煤矿抛掷爆破地方性震级与炸药量的关系的研究。为了避免矿山地震台网地震仪在长期观测中传递函数、归一化因子、放大倍数等参数出现错误,开展同址台站对比分析,实时监控、修订参数。实测结果显示,同址两台站记录到的爆破波形特征非常一致; 使用矿山地震台网资料,采用5 km以内的地方性震级M_L的量规函数,测定了2023年5—8月4次爆破的地方性震级M_L; 联合使用矿山台网和内蒙古地震台网记录到的44次爆破的数据,采用正交回归方法,得到黑岱沟煤矿抛掷爆破地方性震级M_L与炸药量Y之间的经验公式为:M_L=3.15lgY-6.88。

Based on the project “Application and Research of Hurling Blasting Vibration Control Technology in the Hedaigou Coal Mine”,we use the blasting data of the Hedaigou Coal mine to study the relationship between the local seismic magnitude(M_L)and the explosive quantity of the hurling blasting in the Hedaigou Open Pit Coal Mine.In order to address the errors in transfer function,normalization factor,magnification,and other parameters of the seismographs of the Seismic Network of the Hedaigou Coal Mine during long-term observation,we carry out a same-site monitoring of the blasting to do real-time revise of the parameters of the seismographs of the Seismic Network of the Hedaigou Coal Mine.We find that the blasting waveforms recorded by the two seismographs from two different seismic networks at the same site are consistent.Using the near-field data of the Seismic Network of the Hedaigou Coal Mine and the gauge function of the local magnitude(M_L)within 5 km,we calculate the local magnitudes(M_L)of four blasts from May to August in 2023.On the basis of the data of 44 blasts recorded by the Seismic Network of the Hedaigou Coal Mine and the Inner Mongolia Seismic Network,and using the orthogonal regression method(OR),we obtain the empirical relation between the local seismic magnitude M_L and the explosive quantity Q of the hurling blasting in the Heidaigou Coal Mine:M_L=3.15lgQ-6.88.

引言
1 数据准备
2 正交回归方法
3 地方性震级与炸药量之间的经验关系
4 结论

图1 矿山台网8个台站及同址台站分布示意图<br/>Fig.1 Eight stations of the seismic network of the Heidaigou Open Pit Coal Mine and one co-site station of the Inner Mongolia Seismic Network

图1 矿山台网8个台站及同址台站分布示意图
Fig.1 Eight stations of the seismic network of the Heidaigou Open Pit Coal Mine and one co-site station of the Inner Mongolia Seismic Network

表1 同址两台站Q台和QSH台记录的4次爆破地震的参数及对比<br/>Tab.1 Parameters of 4 blasting earthquakes recorded by Q station and QSH station on the same site

表1 同址两台站Q台和QSH台记录的4次爆破地震的参数及对比
Tab.1 Parameters of 4 blasting earthquakes recorded by Q station and QSH station on the same site

图2 同址两台站Q台(a)和QSH台(b)记录到的2023年6月20日抛掷爆破地震波形<br/>Fig.2 The seismic waveforms of the hurling blasting recorded by the two co-located stations Q station and QSH station on Jun 20,2023

图2 同址两台站Q台(a)和QSH台(b)记录到的2023年6月20日抛掷爆破地震波形
Fig.2 The seismic waveforms of the hurling blasting recorded by the two co-located stations Q station and QSH station on Jun 20,2023

表2 矿山台网量规函数表(李学政,赵奕英,2007)<br/>Tab.2 Table of calibration functions for the Seismic Network of the Heidaigou Open Pit Coal Mine(Li and Zhao,2007)

表2 矿山台网量规函数表(李学政,赵奕英,2007)
Tab.2 Table of calibration functions for the Seismic Network of the Heidaigou Open Pit Coal Mine(Li and Zhao,2007)

表3 使用R(Δ)全国和R(Δ)5两种量规函数得到的4次爆破的震级计算结果<br/>Tab.3 The magnitudes of the four blasts calculated by using R(Δ)nationwide and R(Δ)5

表3 使用R(Δ)全国和R(Δ)5两种量规函数得到的4次爆破的震级计算结果
Tab.3 The magnitudes of the four blasts calculated by using R(Δ)nationwide and R(Δ)5

图3 矿山台网和内蒙古地震台网记录到的44次爆破分布示意图<br/>Fig.3 Distribution of 44 blasts recorded by the Seismic Network of the Heidaigou Open Pit Coal Mine and the Inner Mongolia Seismic Network

图3 矿山台网和内蒙古地震台网记录到的44次爆破分布示意图
Fig.3 Distribution of 44 blasts recorded by the Seismic Network of the Heidaigou Open Pit Coal Mine and the Inner Mongolia Seismic Network

表4 矿山台网和内蒙古地震台网定位的爆破事件<br/>Tab.4 Blasting events located by the Inner Mongolia Seismic Network and the Seismic Network of the Heidaigou Open Pit Coal Mine

表4 矿山台网和内蒙古地震台网定位的爆破事件
Tab.4 Blasting events located by the Inner Mongolia Seismic Network and the Seismic Network of the Heidaigou Open Pit Coal Mine

图4 ML与lgY的正交回归直线<br/>Fig.4 Orthogonal regression of the local magnitude ML and lgY

图4 ML与lgY的正交回归直线
Fig.4 Orthogonal regression of the local magnitude ML and lgY

图5 lgY经验与lgY实际差值数量分布<br/>Fig.5 Quantitative distribution of the difference between lgYempirical and lgYreal

图5 lgY经验与lgY实际差值数量分布
Fig.5 Quantitative distribution of the difference between lgYempirical and lgYreal

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备注

引言

1 数据准备

2 正交回归方法

3 地方性震级与炸药量之间的经验关系

4 结论

期刊信息