中南大学学报（自然科学版）2017，Vol.48Issue(6)：1560-1567,8.DOI:10.11817/j.issn.1672-7207.2017.06.020
岩体结构面对爆炸冲击工程响应的影响
Influence of structural planes on response of explosion shock engineering
摘要
Abstract
Considering that structural plane of fractured rock mass is one of the important factors that affects mine safety production,and it has important effect on the propagation law of explosion shock waves,blasting engineering response numerical models with different structural planes' thicknesses,angles and structural planes' filling material conditions were established based on rock mass mechanics parameters and ANSYS/LS-DYNA software,structural plane engineering's response characteristics were obtained.Then neural network forecasting model based on grey relational analysis with different structural plane parameters was built by neural network to study the response degree of structural plane parameters in blasting engineering.The results show that attenuation degree before and after the structure's peak particle vibration velocities presents exponential function with structural plane's thickness.When the thickness is 0,5,10,15 and 20 cm,attenuation degree is 0.365,1.508,2.303,2.418 and 2.443,respectively.Attenuation degree is also positively correlated with structural plane's angle,when the angle is 30°,45° and 60°,the attenuation degree is 1.580,2.495 and 2.698,respectively.When structural plane's filling material is consolidated,debris,argillaceous and attenuation degree is 2.303,2.458 and 2.598,respectively,and it is negatively related to intensity of filling material.The influencing degree of three factors from big to small is structural plane's thickness,angle and intensity of filling material.关键词
结构面/爆炸冲击/质点峰值振速/影响度Key words
structural planes/explosion shock/peak particle vibration velocities/influencing degree分类
数理科学引用本文复制引用
胡建华,高宏伟,薛小蒙,周科平..岩体结构面对爆炸冲击工程响应的影响[J].中南大学学报（自然科学版）,2017,48(6):1560-1567,8.基金项目
国家“十二五”科技支撑计划项目(2015BAB12B01,2013BAB02B05) （2015BAB12B01,2013BAB02B05）
国家自然科学基金资助项目(41672298)(Projects (2015BAB12B01,2013BAB02B05) supported by the National Science and Technology Pillar Program during the 12th "Five-year" Plan Period （41672298）
Project (41672298) supported by the National Natural Science Foundation of China) （41672298）
