基于震动波CT探测技术的冲击危险预测

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为探究三河尖煤矿冲击矿压显现机理和大范围探测工作面围岩应力状态,采用震动波CT探测技术进行了区域应力场反演,构建了冲击危险性技术指标,对冲击危险区域进行了预测。研究结果表明:震动波波速和应力场呈正相关关系,9煤层工作面临近7煤上山保护煤柱侧出现高波速和高波速梯度异常区,与“1.30”冲击显现区基本吻合;震动波CT技术能够实现大范围煤岩体应力探测,动态评价冲击危险区域,进而采取针对性卸压解危措施。 In order to explore the mechanism of rock burst in Sanhejian coal mine and to detect the stress state of surrounding rock in a wide range, the regional stress field inversion was carried out by using the seismic wave CT detection technology, and the technical index of impact hazard was constructed to predict the impact hazard area . The results show that there is a positive correlation between the wave velocity and the stress field, and there is a high-velocity and high-velocity gradient anomalous zone in the coal seam near the coal seam in the coal face 9, which is basically consistent with the “1.30” The CT technology can detect the stress of a wide range of coal and rock masses, dynamically evaluate the impact hazard area, and then take measures to relieve the danger of pressure relief.
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