Secondary rock breaking is important production link in mines.
矿岩二次破碎是矿山重要的生产环节。
The rock breaking rate was calculated based on the criteria of rock rupture.
并根据岩石破裂准则，计算了岩石破裂率的分布。
Experiment shows the rock breaking efficiency of jet flow impact pressure is enhanced.
实验表明，提高了射流冲击压力的破碎岩石效率。
Experiments with the rock breaking ability of star-shaped jet is presented in this article.
在淹没和非淹没条件下对星形喷嘴射流的破岩能力进行了实验研究。
Research shows that by testing and analysis: the mechanical properties of the rock directly related rock breaking.
研究表明，通过测试和分析：岩石的力学性能直接有关的岩石破碎。
The invention relates to a method of measuring a stress wave and to a measuring device and a rock breaking device.
本发明涉及一种测量应力波的方法和测量设备以及岩石破碎设 备。
It is found that under the non-submerged condition, the rock breaking ability of star-shaped jet is greater than that of round jet;
结果表明，在非淹没条件下，星形喷嘴射流的破岩能力高于常规圆形喷嘴射流；
On the basis of this, the problems existing in the study of water-jet rock breaking theory are reviewed out and analysed and some su…
在此基础上评述和分析了水射流破岩理论研究存在的问题，并为水射流破岩理论的研究提出了一些建议。
Air drilling is a kind of under-balanced drilling technology with air, whose rock breaking form is different from conventional mud drilling.
空气钻井技术是以空气作为循环介质的欠平衡钻井技术，其钻头的破岩形式与常规泥浆钻井有很大的区别。
To date, the research on the rock breaking properties of disc cutters of shield machine, compared with foreign countries, is still in its initial stage.
目前，国内有关盾构掘进机盘形滚刀破岩特性的研究与国外相比较，尚处于探索阶段。
Mechanical rock breaking is the main function of modern rotary drilling. The purpose of jet aided mechanical rock breaking is to improve the penetration rate.
现代旋转钻井破碎岩石是以机械破岩为主导方式，射流辅助机械破岩的目的是提高机械钻速。
Basing upon the kinematic features of a planetary drill the paper deals with its specificity of rock breaking. The process and basic laws of rock breaking are presented.
根据行星钻头的运动特征，本文分析了行星钻头破岩的特点及其工作面的破坏方式，揭示了行星钻头破岩的基本规律。
The effect of earth pressure to rock breaking is studied. The principle of rock breaking mechanism by TBM is discussed and the action of rock breaking angle is emphasized.
通过地应力对破岩影响的分析，对TBM破岩机理进行了研究，着重考虑了岩石破裂角对破岩效果的影响。
On the basis of this, the problems existing in the study of water-jet rock breaking theory are reviewed out and analysed and some Suggestions for the theory study are given.
在此基础上评述和分析了水射流破岩理论研究存在的问题，并为水射流破岩理论的研究提出了一些建议。
The simulation results, which are suitable for studying the rock breaking mechanism of TBM in shallow-buried strata, have a good consistency with the experimental results and in-situ data.
仿真结果与实验室观测结果表明，研究成果和施工现场数据存有良好的一致性，可适用于浅地层TBM掘进机破岩机制的研究。
Aimed at the formation characteristics in Tahe area and rock breaking mechanism of PDC bits, the QP19L PDC bit fitting for this formation is optimized and the technical measures are summarized.
针对塔河地区的地层特点和PD C钻头的破岩机理，优选了适合于该地层钻进的QP 19 - L型PDC钻头，总结了PD C钻头的使用技术措施。
Through the theoretical and experimental study on rock breaking by submerged water jetting, taking rock breaking efficiency as goal function, the optimum jetting pressure was acquired to break rock.
本文通过对淹没射流破碎岩石的理论及实验研究，以破岩效率作为目标函数，得到射流破岩的最优压力条件。
Geologists involved in the 2005 study suspect that the impact upturned bedrock, pushing it outward and breaking much of the rock into angular fragments, or breccia.
参与2005年那次研究的地质学家们怀疑，撞击翻转了下层的岩石，将它们朝外推出，并且大多破裂成棱角分明的碎片或者角砾岩。
I just happened to meet three guys that wanted to play rock and roll" — those would be his bandmates in Hootie &the Blowfish — before breaking off to have a solo country career.
然后我就遇到了3个家伙愿意跟我一起玩摇滚”--他说的是他乐队成员，乐队名叫Hootie&Blowfush,后来他们解散了乐队，Rucker走上乡村音乐的单飞之路。
I just happened to meet three guys that wanted to play rock and roll" — those would be his bandmates in Hootie & the Blowfish — before breaking off to have a solo country career.
然后我就遇到了3个家伙愿意跟我一起玩摇滚”--他说的是他乐队成员，乐队名叫Hootie&Blowfush,后来他们解散了乐队，Rucker走上乡村音乐的单飞之路。
The rock damage model and the damage-coupling model suited to analyze the whole process of water jet breaking rock were established with continuum damage mechanics and micro damage mechanics.
运用连续损伤力学和细观损伤力学理论，建立了适用于水射流破岩全过程分析的岩石损伤模型以及宏细观损伤的耦合模式。
Breaking both his legs hasn't tempered his enthusiasm for rock climbing.
两条腿都摔伤没有削弱他对攀岩运动的热情。
It is special important meaning that Deep - hole blasting With bottom Gap Charging is used to protect bottom rock from breaking, to decrease block ratio and to improve blasting efficiency.
深孔爆破孔底空隙装药在有效地保护底板岩层免遭破坏，减少大块率，提高爆破效率等方面均具有重要的意义。
Weathering applies to crumbling and breaking down of rock into smaller pieces.
风化指的是岩石破碎或崩裂成小块。
Dilatancy and volume expansive force are caused by the breaking of rock grains.
岩石晶粒的破碎，将导致扩容，并产生体积膨胀力。
The effects of cutting area, contact arc length, the geometry of cutting face, back dip angle of PDC cutter and rock performance on force of PDC cutter breaking rock were simulated experimentally.
试验模拟了切削面积、接触弧长、切削面形状、切削齿后倾角和岩石性能对PDC切削齿破岩受力的影响。
According to the experimental results, the force model of PDC cutter breaking rock was developed.
根据试验结果，建立了PD C切削齿破岩的受力模型。
The swirling water jet technique for breaking rock has good efficiency and larger breaking area.
旋转射流破岩的优势在于破碎面积大、效率高。
Using the experimental device of combined breaking rock, the experiment simulated the conditions at bottom of well in order to study the work-in parameters of combined breaking rock.
为提高钻井速度，掌握水力机械联合破岩规律，开展了水力机械联合破岩主要配合参数的实验研究。
Using the experimental device of combined breaking rock, the experiment simulated the conditions at bottom of well in order to study the work-in parameters of combined breaking rock.
为提高钻井速度，掌握水力机械联合破岩规律，开展了水力机械联合破岩主要配合参数的实验研究。
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