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作 者:张英 ZHANG Ying(Zhongyun International Engineering Co.,Ltd.,Zhengzhou 450007,China)
机构地区:[1]中赟国际工程股份有限公司,河南郑州450007
出 处:《煤炭工程》2018年第12期9-12,共4页Coal Engineering
摘 要:为了探讨公路大桥压煤开采对桥安全性和稳定性的影响,以某公路大桥压煤开采为例进行研究。首先提出条带开采不同采、留煤柱宽度的技术方案,其次利用该矿地表移动观测数据拟合出开采沉陷预计参数,最后利用计算机预测不同开采方案的沉陷最大值,并对压煤开采有害因素进行分析、评价,最终得出采出条带50m、留设条带60m的开采技术方案。通过分析得出条带开采合理的采、留煤柱宽度可以安全地采出该公路大桥压煤,且大桥下部2个断层不会对公路大桥造成影响,同时本文的研究方法可用于同类压煤开采的方案的确定。In order to investigate the impact of coal mining on the safety and stability of highway bridges,the coal mining under a highway bridge is taken as an example. Firstly,the technical schemes of strip mining with different mining and retaining coal pillar width is proposed. Secondly,the mining surface observation data is used to fit the predicted parameters of mining subsidence. Finally,the maximum value of subsidence of different mining schemes is predicted by computer, and the harmful factors for the strip mining were analyzed and evaluated. A mining technical plan with 50m mining and 60m retaining is obtained. According to the analysis,it is safe to extract the coal under the highway bridge with the reasonable mining and retaining coal pillar width,and the two faults in the lower part of the bridge will not affect the highway bridge. At the same time,research method of this paper can be used in coal mining scheme selection under similar engineering conditions.
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