The stone that cannot be dug directly can use blasting operation.
机械不能直接开挖的石方采用爆破法开挖。
It is concluded that the rock mass structure has a not negligible influence when a quality threshold has to be set for a tunnel blasting operation;
研究表明，在必须为隧道爆破作业规定质量参数临界值时，岩体构造有不可忽视的影响。
It is mainly applied to blasting operation of general mining, tunneling, road-building, bridge-construction and building water conservancy projects.
主要用于一般采矿、开凿隧道、筑路修桥、兴建水利等爆破作业。
The technical requirements adopted for open long-hole blasting and its insurance countermeasures were put forward by summarizing the blasting operation during exploiting the Tunqiu Mine of Liugang.
通过对柳钢屯秋矿开采中的爆破工作进行总结研究，提出采用露天开采深孔爆破的技术条件与安全保障措施。
Because the electric and magnetic fields exist within the blasting area, the nonelectric initiation technology was used to avoid the effect of stray current, ensuring the safety of blasting operation.
由于爆区范围内存在较强的电场和磁场，采用了非电起爆技术，避免了杂散电流的影响，保证了爆破作业的安全。
This system is characterized by interface well, function all-around, operation simple and easy extend etc., suited for blasting parameters optimum and blasting effect control for bench blasting.
该系统具有界面好、功能全、操作简单和易扩展等特点，适用于台阶爆破的爆破参数优化和爆破效果控制。
Sand blasting equipment price has made reliable performance, reasonable design, convenient operation, high efficiency characteristics.
制砂设备价格具有性能可靠、设计合理、操作方便、工作效率高等特点。
For example a work shop or grit blasting area where hot work is considered "normal operation" will not require Permit to work.
例如在喷钢砂处理区域，高温作业是“常规操作”，所以就不必申请作业许可证。
The controlled blasting design of Benxi Civil Air Defence Building, operation and safety technical measure in complicated environment is introduced.
介绍本溪市人防办公楼基础开挖控制爆破设计、施工及在复杂环境下所采取的安全技术措施。
In this paper, the design and operation of demolition blasting of a large factory building in Xuyi Power Plant are introduced.
介绍了盱眙电厂复杂环境下大型厂房拆除爆破的设计及施工。
An operation line for Anshan-type magnetite in the east of Hebei Province was studied and the line's comminution process included blasting, crushing and grinding.
按照系统能耗最低原则，研究了冀东鞍山式磁铁矿石粉碎过程包括爆破、破碎、磨矿作业作为一条作业线，构建了矿石粉碎过程各工艺环节能耗合理分布模型。
After the blasting, the rock at one-third of the time after the operation, the maximum content of solid particles.
在爆破之后，在出岩作业的后三分之一时间内，固体颗粒含量最多。
Blasting reliability is key to the coal mining operation and ground blasting.
煤矿采掘和地面爆破施工中，爆破可靠性是个重要环节。
The sublevel interval Charging is introduced which can significantly improve the quality of blasting thus reducing operation cost.
通过对气囊间隔器在爆破工作中的使用情况分析，提出采用分段间隔装药技术，提高爆破质量降低采矿成本。
The article describes the process and technical data of shot blasting machines and specific performance of PLC control system that resulted in good effects after it being put into operation.
叙述抛丸机组的工艺流程和技术参数，介绍p LC控制系统的具体功能，该控制系统投入运行后，效果良好。
Rock blasting is the key process in water construction, and have a close relationship with operation of public facilities and property safety.
石方爆破是水利施工顺利开展的关键环节之一，关系公共设施正常运转及群众财产安全。
Rock blasting is the key process in water construction, and have a close relationship with operation of public facilities and property safety.
石方爆破是水利施工顺利开展的关键环节之一，关系公共设施正常运转及群众财产安全。
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