The pulsed water cannon which is a new and effective hydrodynamic rock-breaking device, will find a wide application.
脉冲水炮是一种新型有效的水力破岩装置，因而具有广阔的发展前景。
The bit needs not only the high rock-breaking capacity but also the strong wear and low resistance during rock-breaking process.
而钻头在破岩过程中，既要求具有高效的破岩能力，又要求具有强耐磨性和低阻力。
The main factors that influence the efficiency of rock-breaking are the down-hole rock properties and the rock-breaking tools and methods.
其破岩效率的主要影响因素是井下地层岩石性质、破岩工具和方法。
According to the conservation principle of energy and the rock-breaking mechanism of bit, the assessment model was set up for formation lithology and the working condition of bit.
根据能量守衡原理和钻头破岩机理，建立了地层岩性与钻头工况评估模型。
The rock-breaking mechanism of roller bit teeth is always a hot focus and difficulty in the fields of drilling, and it receives widely researchers attentions in the rock mechanics and the engineering.
牙轮钻头牙齿破岩机理研究一直是钻井工程的一个热点和难点，备受岩石力学与工程界的关注和重视。
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。
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。
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。
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。
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。
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。
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。
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。
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。
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。
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。
Breaking rock rolling cutters are cutters of breaking rock with rolling in the way of the push of the cutterhead, they are used widespread in the full face rock tunnel boring machine.
滚动破岩刀具是在刀盘的推压力作用下滚动破碎岩石的刀具，广泛用于全断面岩石掘进机上。
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。
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。
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。
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。
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。
Anomaly shape is consistent well with the numerical simulation of the rock - breaking test.
异常形态与岩石破裂实验数值模拟结果有较好的一致性。
The ship was breaking up on the rock.
船在礁石上撞毁了。
But exactly when the rock masses reach the breaking point is a mystery.
但是，岩层承受的最强地应力究竟是多少，却仍然未知。
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