液压支架回撤位置的分析
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摘要
在掌握支承压力分布和周期来压规律的基础上,从矿山压力显现入手,阐述了确定周期来压步距的方法。依据"砌体梁"理论和周期来压步距,利用工作面空间本身处于支承压力降低区和周期来压过后矿山压力趋于缓和这2个有利因素,可以推断出液压支架回撤位置能处于良好的矿山压力显现区域。此分析可以解决液压支架回撤位置确定的问题。
On the basis of grasping the distribution of support pressure and the law of periodic pressure, the method of determining the step distance of the periodic pressure is expounded, starting with the pressure of the mine. On the basis of the voussoir beam theory and the periodic weighting step distance, the space of the working face supporting pressure itself in decreasing area and periodic pressure after the mine pressure tends to ease the two favorable factors, it can be inferred that the hydraulic support withdrawing position in mine pressure good show area. This analysis can solve the problem of determining the retracting position of the hydraulic support.
On the basis of grasping the distribution of support pressure and the law of periodic pressure, the method of determining the step distance of the periodic pressure is expounded, starting with the pressure of the mine. On the basis of the voussoir beam theory and the periodic weighting step distance, the space of the working face supporting pressure itself in decreasing area and periodic pressure after the mine pressure tends to ease the two favorable factors, it can be inferred that the hydraulic support withdrawing position in mine pressure good show area. This analysis can solve the problem of determining the retracting position of the hydraulic support.
引文
[1]杨永辰.综放面支架与围岩相互作用关系的分析[J].煤矿设计,1999(6):4-6.
[2]刘卫明.综采工作面液压支架回撤新技术应用[J].科技与企业,2013(9):190-191.
[3]刘思利.长春兴煤矿103大采高综放面末采及回撤阶段矿压规律研究[D].青岛:山东科技大学,2017.
[4]许政,刘士卫,丁向.大采高液压支架回撤工艺与措施[J].煤矿开采,2012,17(6):40-42.
[5]刘继祥.综采工作面液压支架安全快速回撤技术研究与应用[J].内蒙古煤炭经济,2015(9):184-185.
[2]刘卫明.综采工作面液压支架回撤新技术应用[J].科技与企业,2013(9):190-191.
[3]刘思利.长春兴煤矿103大采高综放面末采及回撤阶段矿压规律研究[D].青岛:山东科技大学,2017.
[4]许政,刘士卫,丁向.大采高液压支架回撤工艺与措施[J].煤矿开采,2012,17(6):40-42.
[5]刘继祥.综采工作面液压支架安全快速回撤技术研究与应用[J].内蒙古煤炭经济,2015(9):184-185.