基于相似材料的垮落破碎岩石再变形规律试验研究  

Research on the Redeformation Pattern of Collapsed and Broken Rocks Based on Similar Materials

作　　者：杨志强[1] 鞠远江[2] 周彭元 邵宇 刘超 YANG Zhiqiang;JU Yuanjiang;ZHOU Pengyuan;SHAO Yu;LIU Chao(Pingdingshan Branch,CCTEG Beijing Huayu Engineering Company Limited,Pingdingshan 467002,China;School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中煤科工集团北京华宇工程有限公司平顶山分公司,河南平顶山467002 [2]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《河南科技》2024年第3期31-36,共6页Henan Science and Technology

摘　　要：【目的】为了研究采空区充水后破碎岩石的压实变形特征。【方法】采用模型试样的方法,对垮落带破碎岩石进行缩尺,利用自制的压实装置对不同环境(干燥、饱水、分级浸水)影响下老采空区垮落破碎岩石压实变形特征进行研究。【结果】主要研究成果如下:饱水与干燥状态下相似材料破碎试样压缩量(z)和蠕变阶段压缩量(Δz)存在“饱水>干燥”的关系。【结论】对于老采空区而言,在水尚未充满整个采空区时,垮落带破碎岩石就已经产生了较大的变形,后续充水对垮落破碎岩石的影响减弱,产生的变形低于整个蠕变阶段变形的30%。[Purposes]This paper aims to study the compaction and deformation characteristics of crushed rocks after filling with water in the mining area.[Methods]The method of model sample is used to scale the broken rock in the caving zone,and the compaction deformation characteristics of the broken rock in the old goaf under the influence of different environments(dry,saturated and graded immersion)are studied by using the self-made compaction device.[Findings]The main research results are as fol-lows:the compression(z)and creep stage compression(Δz)of the crushed specimens of similar materials under saturated and dry conditions have the relationship of"saturated>dry".[Conclusions]In the old mining area,the deformation of the crushed rock in the collapse zone was already large before the water level filled the whole mining area,and the effect of subsequent water filling on the crushed rock was weakened and the deformation produced was less than 30%of the deformation in the creep stage.

关 键 词：相似材料 压实试验 再变形 

分 类 号：TD315[矿业工程—矿井建设]