文献类型：期刊文献

中文题名：基于载荷连续表达的支护-覆岩力学结构模型

英文题名：Mechanical Model of Face Support and Overburden based on a Continuous Load Expression

作者：张开智 张劲松

第一作者：张开智

机构：[1]贵州理工学院,贵州贵阳550003;[2]贵州耀辉矿业发展有限公司万顺煤矿,贵州遵义563000

第一机构：贵州理工学院

年份：2022

卷号：40

期号：3

起止页码：102-107

中文期刊名：贵州工程应用技术学院学报

外文期刊名：Journal of Guizhou University Of Engineering Science

基金：贵州省科技重大专项“急倾斜煤层机械化开采关键技术装备研制与应用示范”,项目编号:[2018]3005;贵州省教育厅科技滚动支持项目“矿山动力失稳事故多参量动态预警系统研究”,项目名称:黔教合KY字[2016]042。

语种：中文

中文关键词：支护-覆岩;周期来压;顶板破断;力学模型

外文关键词：Face Support-overburden;Periodical Weighting;Roof Caving;Mechanical Model

摘要：工作面支架是重要的岩层运动控制手段,支护-覆岩关系是岩层运动及其控制的重要研究内容。现有研究采用理论模型、经验模型等方法,对支护-覆岩关系进行了大量探索,但在理论模型化简、应用范围等方面存在一定局限。在现有研究基础之上,采用一种顶板非均布荷载连续表达,建立3段式周期来压前顶板力学分析模型。研究结果表明,提高工作面支护可有效控制顶板变形,降低顶板弯矩与剪力水平。
Face support is a critical method to control the strata behaviour in underground long wall mining.The correlation between support capacity and roof behaviour is essential in strata control.Analytical and empirical methods have been adopted to investigate the control mechanism of face support to the roof.However,limitations in terms of simplified model and application range are non-negligible.Based on current knowledge and existing literature,a continuous function is adopted in this study to represent the non-uniformly distributed loading over the roof.A three-segment mechanical model was devised to investigate the mechanical behaviour of overlying strata before periodical weighting.A set of case studies were carried out and suggested that the deformation,bending moment and shear force of the roof were effectively reduced by increasing the support resistance.The proposed method offers an analytical model to explore the correlation between support capacity and roof behaviour.The model also can be adopted to identify the mechanical state of the roof.