复采采场再生顶板结构及支架载荷确定

发布时间：2018-05-25 22:53

本文选题：复采 + 再生顶板　；参考：《岩土工程学报》2017年10期

【摘要】：为确定复采采场支架的合理承载,通过理论计算、现场观测和顶板结构探测得到了复采再生顶板的结构分带特征,建立了再生顶板结构模型;基于该结构模型,结合现场观测和相似材料模拟实验,构建了下分层回采"支架再生顶板"结构力学模型,应用该力学模型推导了支架载荷表达式,并进行了实例计算和现场验证。结果表明,再生顶板结构可分为"四带",即胶结再生带、弱胶结压实带、裂隙带和弯曲下沉带;再生顶板下回采下分层时,支架承载岩体可分为"两区",即完全承载区(A区)和部分承载区(B区);应用所推导的支架载荷表达式进行了实例计算,计算结果得到了现场支架载荷监测数据的验证。
[Abstract]:In order to determine the reasonable bearing capacity of the remining stope support, through theoretical calculation, field observation and roof structure detection, the structural zonation characteristics of the regenerated roof of the complex mining are obtained, and the structure model of the regenerated roof is established based on the structural model. Combined with field observation and similar material simulation experiment, the structural mechanics model of "support roof regeneration" was constructed, and the load expression of support was derived by using the model, and an example was calculated and verified in the field. The results show that the regenerated roof structure can be divided into "four zones", that is, cemented regeneration zone, weak cemented compaction zone, fracture zone and bending subsidence zone, and when the regenerated roof is mined for stratification under the roof, The support bearing rock mass can be divided into "two zones", that is, complete bearing area (A) and partial bearing area (B area), and the calculated results are verified by the in-situ load monitoring data by using the derived support load expression.
【作者单位】：山东科技大学矿业与安全工程学院;信阳师范学院建筑与土木工程学院;
【基金】：山东省重点研发计划项目(2015GSF116012)
【分类号】：TD327.2

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