首页|近距离煤层相向采掘合理时空关系研究

近距离煤层相向采掘合理时空关系研究

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为确定近距离煤层相向采掘的合理时空关系,以1503工作面和11002运输顺槽为工程背景,采用理论分析和数值模拟的方法,分析相向采掘过程中工作面的超前支承压力分布规律与背向采掘过程中底板采空区的应力演化规律.理论计算结果表明,1503工作面与11002运输顺槽相向采掘时二者超前支承压力影响范围之和为131.01 m,1503工作面滞后影响距离为59.55 m.数值模拟结果显示,相向采掘过程中1503工作面与11002运输顺槽的最小超前支承压力影响距离为140 m,背向采掘过程中1503工作面的最小滞后影响距离为60 m.理论计算与数值模拟结果基本吻合,根据研究结果提出1503工作面与11002运输顺槽的合理时空关系设计方案,该方案可用于指导工作面安全生产.
Study on Reasonable Space-Time Relationship of Opposite Mining in Close-Distance Coal Seams
In order to determine the reasonable space-time relationship of opposite mining in close-distance coal seams,taking the 1503 working face and 11002 transportation trough as the engineering background,theoretical analysis and numerical simulation were used to analyze the distribution law of the advance abutment pressure of the working face in the process of the opposite mining and the evolution law of the floor stress of the goaf in the process of the backward mining.Theoretical calculation results show that the sum of the influence range of the advance abutment pressure of the 1503 working face and 11002 transportation trough in the opposite mining process is 131.01 m,and the lag influence distance of the 1503 working face is 59.55 m.The numerical simulation results show that the minimum of influence distance of advance abutment pressure between the 1503 working face and the 11002 transportation trough in the opposite mining process is 140 m,and the minimum lag influence distance of the 1503 working face in the backward mining process is 60 m.The theoretical calculation was basically consistent with the numerical simulation results.According to the results,a reasonable space-time relationship between 1503 working face and 11002 transportation trough is proposed to guide the safe production of the face.According to the research results,a reasonable space-time relationship design scheme between 1503 working face and 11002 transport trough was proposed,which can be used to guide the safe production of working face.

Close-distance coal seamsOpposite miningAdvance abutment pressureSpace-time relationshipNumerical simulation

蒋邦友、刘建群、刘时麟、邵光雷、杜睿民

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山东科技大学能源与矿业工程学院,山东青岛市 266590

新疆昌吉市菏泽腾达矿业有限责任公司,新疆昌吉回族自治州 831116

近距离煤层 相向采掘 超前支承压力 时空关系 数值模拟

国家自然科学基金项目

52374129

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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