摘要
为检测水泥-尾砂充填体内部构造和力学性能,采用钻芯法从采场充填挡墙或相应部位施工覆盖整个采场的地质孔取样,使用SY-1型声波仪对样品进行声波测试,通过配套软件分析波形和频谱.结果表明:波速和动弹性力学指标的差距源自强度和疏密构造差异;虽不同充填体声波波速不同,但其声波波形和频谱成分基本相同;声波延时长、主频集中、频谱较简洁且振幅较高,反映出充填体内部夹杂、孔洞和空穴等缺陷少,结构较完整.
For detecting the interior conformation and mechanics capability of cement-tailing backfill, the sampling method of bore drilling was adopted from filling blocking walls or other corresponding parts which could cover all the stope to get backfill cores. The acoustic wave velocity of the samples was tested by use of SY-1 type acoustic testing apparatus, and then the spectra and waveforms were analyzed by way of correlative software. Testing results indicate the difference between acoustic wave velocity and elasticity mechanics index derives from the difference of backfill＇ s strengtb and inner density structure. Although different backfill samples have different acoustic speeds, their acoustic waves have similar waveforms and spectrum components basically. The acoustic wave with a longer delay, main spectrum convergence, sententiousness spectra and a higher swing shows that the backfill has little lacuna such as impurities, holes and cavities and its configuration is integrated.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2010年第10期1248-1252,共5页
Journal of University of Science and Technology Beijing
关键词
矿山
充填体
检测
频谱分析
mines
backfill
detection
spectrum analysis
