The design methods and measures of safety protection of weakly loose blasting are introduced with field cases 摘要通过工程实例，介绍了微弱松动爆破的设计方法及安全防护措施。
By upper - lower solution method , the conditions of global existence and blow - up of solutions are obtained through careful analysis 利用上下解方法，通过精细的分析，得到了解整体存在和爆破的条件。
In addition the construction method and holes arrangement of milliseconds differential blasting technology were design 分析了微差爆破技术的施工方法和布孔，并对微差爆破的时间间隔、用药量等参数进行了计算。
Therefore , it is very important to study the mechanism and the related parameters of notched directional splitting controlled blasting 因此研究切槽定向断裂控制爆破的爆破机理及相关参数,具有十分重要的意义。
Combining longshou waterpower station project the mechanism of rock excavation explosion and production test method are studied more completely 本文结合龙首水电站工程，较全面地研究了岩石开挖爆破的机理及生产试验的方法。
The success of excavation of a protection layer once a tire wilt play a quite important role in economic fund and shortening time limited for the project 保护层一次开挖爆破的成功，对节省资金，缩短工期起到了重要的作用。
With increasing day after day of high grade highway in moutain ridge district , the requriement of roadbed stonework blowing up is improving continuously 随着我国山岭区高等级公路建设的日益增多，对路基石方爆破的要求不断提高。
At the same time , we researched the method of the dynamic photoelasticity experiment . we designed a protection device and a trigger to pack the medicine structure synchronously 同时对动光弹爆破的实验方法作了探索,设计出防护装置和同步触发装药结构。
By comparison theorem and the upper - lower solution method , the conditions for the global existence and the finite time blow - up of solution to the system are established 通过运用比较定理和构造上、下解方法，建立了该方程组解的整体存在和有限爆破的充分条件。
We studied the related parameter of notched blasting by the dynamic photoelasticity experiment simply . we also designed reasonable blasting parameter under the condition of laboratory 通过动光弹爆破实验对切槽爆破的相关参数进行了初步探讨,设计出在实验室条件下的合理参数。
