首页|上保护层开采煤岩卸压效应的光纤感测工业试验研究

上保护层开采煤岩卸压效应的光纤感测工业试验研究

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明晰保护层开采卸压空间效应对于优化矿井开拓布局至关重要.以葫芦素煤矿为工程背景,采用分布式光纤传感技术监测煤岩体变形,根据工作面采动空间位置关系及光感数据变化,分析下伏煤岩体的应变分布动态特征,根据上保护层开采过程中下伏煤岩体的应力增高、应力减小、应力恢复的动态变化过程,揭示了不同深度条件下煤岩体应变增减尺度的明显差异性,获得了上保护层开采卸压保护范围参数:倾向和走向的卸压角分别为63.6°和58.7°,卸压滞后距和最大深度分别为14.2 m和28.4 m.研究结果能够为分布式光纤传感技术在保护层开采卸压效应监测中的推广应用提供重要参考依据.
Industrial Experimental Study on Fiber Optic Sensing of Pressure Relief Effect in Coal and Rock Mining with Upper Protective Layer
Clarifying the pressure relief space effect of protective layer mining is crucial for optimizing the layout of mine development.Taking Hulusu Coal Mine as the engineering background,the distributed fiber optic sensing technology was adopted for monitoring the deformation of coal and rock mass.According to the spatial position relationship of working face mining and the change state of light sensing data,the dynamic change characteristics of the strain distribution of underlying coal and rock mass were analyzed,and the dynamic change process of stress increase,stress decrease,and stress recovery experienced by the underlying coal and rock mass during the mining of the upper protective layer was obtained.The significant differences in the scale of strain increase and decrease in coal and rock masses under different depth conditions were revealed,and the parameters of the relief protection range for upper protective layer mining were obtained as follows.The relief angles of dip and strike were 63.6° and 58.7°,respectively,and the relief lag distance and the maximum depth were 14.2 m and 28.4 m,respectively.The research results can provide an important reference for the promotion and application of distributed fiber optic sensing technology in monitoring the pressure relief effect during the mining of protective layer.

Distributed fiber optic sensing technologyMining of upper protective layerEffect of pressure reliefIndustrial test

雷武林、柴敬、丁国利、张有志、姚锐、王乐

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陇东学院能源工程学院,甘肃庆阳市 745000

西安科技大学能源学院,陕西西安 710054

西安科技大学教育部西部矿井开采与灾害防治重点实验室,陕西西安 710054

中天合创能源有限责任公司葫芦素煤矿,内蒙古鄂尔多斯市 017010

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分布式光纤传感技术 上保护层开采 卸压效应 工业试验

国家自然科学基金地区科学基金资助项目陇原青年创新创业人才(团队)项目甘肃省高等学校创新基金资助项目甘肃省青年科技基金资助项目庆阳市科技计划资助项目

522640072022B-20821JR1RM341QY2021A-F003

2024

矿业研究与开发
长沙矿山研究院有限责任公司 中国有色金属学会

矿业研究与开发

CSTPCD北大核心
影响因子：0.763
ISSN：1005-2763
年,卷(期)：2024.44(4)
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