巷道岩爆孕育过程的数值模拟  

Numerical simulation of gestation of rockburst in mining lane

作　　者：李宪章 王利[2] 李宏武 李照军 赵豪 周志琨 

机构地区：[1]大同煤矿集团轩岗煤电有限责任公司,山西原平034114 [2]河南理工大学土木工程学院,焦作454000

出　　处：《辽宁工程技术大学学报（自然科学版）》2011年第3期369-372,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家重点基础研究发展计划基金资助项目(973计划)(2005CB221500)

摘　　要：针对岩石类动力学灾害如地震、岩爆、冲击地压、煤矿开采中的三突问题,其形成机制都可归结为岩石损伤演化诱致结构灾变的模式。工程结构灾变区的形成和发展可以通过数值模拟确定。根据微损伤不可逆演化原理,利用格形有限元模型,模拟巷道断面在自适应位移加载条件下,从点状微损伤斑图到宏观贯通断裂的不可逆的跨尺度生长过程。数值程序是在ANSYS平台上开发。In order to solve the layered rock-mass drill-blasting method adopted in the close two-lane tunnel construction blasting effect, based on the in-situ test method, research the blasting decay laws o Results show that： the new tunnel blasting vibration velocity, with the increase of space explosion source into a nonlinear decreased; Vibration velocity strong direction effect, face the radial vibration weapons explosion exceeded tangential vibration, the radial vibration velocity on both tunnel and the surrounding rock＇s damage new plays a leading role; When using fluctuation steps excavation blasting shock wave, the stairs to the influence of both the tunnel than down the steps is remarkable. Will blasting on the new tunnel itself damage to the surrounding the influence of two adjacent tunnels and combination of comprehensive consideration, layered intrusions in the tunnel blasting parameters were optimized~ This results in rock blasting engineering to have the certain reference value and significance.

关 键 词：巷道 岩爆 数值模拟 孕育 灾变预测 

分 类 号：TD324.2[矿业工程—矿井建设]