可缩柱自适应墩柱充填石料连续级配压缩性能试验研究  

Test Study on Compression Performance of Continuously Graded Filling Rock of Reducible Self-adaptive Pier Column

作　　者：崔景昆[1,2] 郭利军 孙守新[1] 王凯 闫泽红[1] CUI Jingkun;GUO Lijun;SUN Shouxin;WANG Kai;YAN Zehongl(Hebei University of Engineering, Handan 056038, China;Hebei Technology Research Center of Coal Mine Construction Engineering, Handan 056038, China)

机构地区：[1]河北工程大学,河北邯郸056038 [2]河北省煤炭矿井建设工程技术研究中心,河北邯郸056038

出　　处：《煤矿安全》2018年第5期59-62,共4页Safety in Coal Mines

摘　　要：为了研究可缩柱自适应墩柱充填石料连续级配压缩性能,为其选取最优级配方案,在实验室进行了石料压缩试验。以泰波理论为依据,并辅以声发射技术以及静态应变测试系统,对不同级配下石料压缩率与轴压、钢桶侧向微应变及声发射情况进行研究。试验结果表明:可缩柱自适应墩柱充填石料连续级配压缩过程可大致分为初步压实、破裂压密和整体稳定压实3个阶段;当泰波系数n=0.6时,级配增压最快且级配石料在钢桶内形成的结构最稳定,钢桶侧向膨胀也较小,级配效果最好。In order to study the compressible performance of continuously graded filling rock of reducible self-adaptive pier column and select the optimal grading scheme, the experiment was carried out in the laboratory.Based on the Talbol theory, supplemented by acoustic emission technique and static strain testing system, we studied the compression ratio and axial compression of the rock and the lateral micro-strain and acoustic emission of the steel drum under different matching levels. The experimental results show that the compression process can be roughly divided into three stages： initial compaction, rupture compaction and overall stable compaction. When the Talbol coefficient n is 0.6, the grading supercharging is the fastest and the structure of grading rock is the most stable in the steel drum, and the side expansion of steel drum is also small, the grading effect is the best.

关 键 词：可缩柱自适应墩柱 连续级配 沿空留巷 压缩性能 巷旁支护 充填材料 

分 类 号：TD315.1[矿业工程—矿井建设]