顶板断裂来压力学模型及其在综放工作面末采阶段的应用

发布时间：2018-01-03 11:39

本文关键词：顶板断裂来压力学模型及其在综放工作面末采阶段的应用　出处：《矿业安全与环保》2016年06期 　论文类型：期刊论文

【摘要】：针对综放工作面末采阶段支架回撤过程中容易出现压架的问题,建立了顶板断裂来压力学模型,并根据顶板断裂前后的平衡方程推导出顶板在不同断裂形式下支护体、煤体内应力增量平均值的统一表达式。以神东矿区多通道快速回撤技术模式为研究对象,根据顶板断裂面与主回撤通道的位置关系分两种情况进行了力学分析,结果表明:工作面回撤停采的合理位置应能够使主回撤通道处于顶板断裂面以外;回撤期间利用停采让压原理调节周期来压步距,采取在主撤巷道内加强支护、控制贯通前后工作面高差等措施,能有效保证综放工作面末采阶段的安全高效回撤。
[Abstract]:According to the pressure frame to solve the problem of fully mechanized caving face at the end of the production stage support withdrawing process, established to roof fracture pressure model, and according to the roof fracture before and after the balance equation is derived in different fracture modes under the roof support, coal body stress increment of the average value of a unified expression. To withdraw technology multi channel fast mode of Shendong mining area as the research object, according to the position relationship between the main roof fracture surface and the return channel in two cases were analysed, the results show that the reasonable position of face retracement stop mining should be able to make the main channel in the retracement of roof fracture surface outside; stop mining pressure adjustment cycle principle the use of pressure to step away from the withdrawal period, to strengthen the support in the main removing gateway, control through measures such as surface elevation before and after work, can effectively guarantee the efficient return of fully mechanized caving face at the end of the production phase security withdrawal.

【作者单位】：内蒙古伊泰集团酸刺沟煤矿;
【分类号】：TD355
【正文快照】： 网络出版地址:http://www.cnki.net/kcms/detail/50.1062.TD.20161206.2023.036.html神东矿区为实现高产高效的开采模式,综放工作面末采阶段采用了多通道快速回撤技术,采用该技术工作面搬家速度要比传统工艺快3~5倍[1]。其中,实现多通道快速回撤技术的关键是控制工作面与主回

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