矿井采空区地下水库抗震性研究
Study on Earthquake Resistance of Underground Reservoir in Mined-out Area of Mine
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摘要: 为研究矿井采空区水库在震动环境下稳定性和安全度的变化情况,以李家壕煤矿为研究背景,通过采用公式推导和实验室相似模拟实验的方法,分析研究地震或其他震动持续存在的情况下,采空区水库各主要部分的稳定性以及安全度的变化情况。由于坝体是支撑采空区水库正常作业的关键部分,因此,着重对坝体在地震作用下的动力响应进行分析,得到坝体在地震情况下的动力响应公式。同时,通过实验室相似模拟实验的研究得出在采空区在震动持续存在的情况下,整个采空区受扰动后安全度的变化情况:随着震动强度的增加,水库整体的安全度降低;且在震源位置已知的条件下,距离震源越近处的安全度越低。Abstract: To study the change of stability and safety degree of mine goaf reservoir under vibration environment, taking Lijiahao Coal Mine as the research background, the stability and safety of the main parts of the goaf reservoir are analyzed and studied under the continuous existence of earthquake or other earthquakes by using the method of formula derivation and similar simulation experiment in laboratory. Since the dam body is a key part of supporting the normal operation of goaf reservoir, the dynamic response formula of the dam body under the action of earthquake is analyzed to obtain the dynamic response of the dam body under the condition of earthquake. At the same time, through the research of similar simulation experiments in the laboratory, the variation of the safety degree of the whole goaf after disturbance is obtained under the condition that the vibration in the goaf continues to exist. With the increase of seismic intensity, the overall safety of the reservoir decreases. And under the condition that the source location is known, the closer the source is, the less safe it is.
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Keywords:
- goaf /
- groundwater reservoir /
- vibration disturbance /
- dynamic response /
- safety
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