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- Control of continuous tunnel around rock stress secondary allocation effect 连拱隧道围岩应力二次分配影响的控制
- around rock stress 围岩应力
- Today about 1,200 Catawba live around Rock Hill in South Carolina. 现今只剩约一千两百名卡托巴人住在南卡罗来纳州罗克希尔。
- In this paper,by the monitoring of rock stress behavior around mine opening and the monitory of anchoring force,the monitoring of the bolt is realized. 本文通过对巷道围岩的变形监测、锚杆锚固力监测达到对锚杆支护质量的监测。
- The Relations Between Rockburst and Surrounding Rock Stress in Underground Chambers. 地下洞室中岩爆与围岩应力的关系。
- Using the elastic theory,the au-thor attempts to calculate approximately the relative change of rock stress after coalextraction. 本文试图利用弹性理论近似地计算采动后的应力相对变化。
- BQ method is suggested as one of favourable ways for evaluation and classification of rockmass quality in the low rock stress region. 采用岩体力学介质属性分级方法(即BQ法)对研究区引水洞、溢洪洞以及泄洪洞进口段围岩进行了岩体质量分级与评价。
- Abstract: Rock stress state in situ is determined by the hydrofracturing method for rock stress measurement in a railway tunnel in northwestern Yunnan. 摘 要: 通过地应力测量,确定出工程区隧道围岩现今地壳应力状态,即原地应力的大小和方向。
- Some distribution rules of surrounding rock stress of the tunnel are summarized to provide the reasonable references to design and construction of this tunnel. 总结了该断层地段隧道围岩应力的一些分布规律,为该工程的设计和施工提供了合理的参考依据。
- The occurrence of rock burst not only need a great deal of elastic energy gathering in the coal seam and the around rock stratum, but also the external energy released by the main key stratum break. 冲击矿压的发生需要煤层及其周围岩层中聚集大量的弹性能外,还需要主关键层破裂等释放的外部能量;
- Based on rock meso-damage and fracture mechanism, it is presented that the crack growing is the removal process of damaged zone due to the gradual damage from the crack tip to the around rock. 基于岩石细观损伤断裂理论,认为裂纹扩展的过程就是裂纹尖端到周围岩石的逐渐损伤引起的损伤区移动过程;
- The in situ rock stress prevents the rise of confined water and water inrush for thick floor aquifuge,but for thin floor aquifuge the in situ rock stress wo... 指出对于厚底板隔水层,原岩应力起着阻止底板承压水上升和突出的作用,对于薄底板隔水层,原岩应力起着破坏底板、导致承压水突出的作用。
- The in situ rock stress prevents the rise of confined water and water inrush for thick floor aquifuge,but for thin floor aquifuge the in situ rock stress wo. 介绍了水力压裂应力测量的原理和现场测量结果,论述了煤层底板隔水层带的阻水机理和承压水沿煤层上升的机理,以及原岩应力、水压与裂隙扩展的关系。
- Whatever the straight line part of the stress-strain curve may be,it is always possible to find out the rock stress threshold by the peak value of the S-wave veloc. 试验结果表明:不论应力应变曲线上的直线部分是否明显,都可以用检测横波速度最大值的办法确定岩石的应力门槛值;并建议对求岩石泊松比的常规方法有必要进行重新调整。
- There is also a rare wild mulberry tree there, arming around rocks, the uncovered roots twine a huge stone, like two green dragons. 还有一株罕见的野桑树抱石而长,裸露盘虬的两条根缠绕着一块巨石,宛若两条青龙;
- The thug grappled him around the neck. 那个歹徒抓住了他的脖子。
- Abstract: This paper discribes the principle of rook acoustic emission techniques.Some applications such as insitu rock stress measuring,locating high stress zone,predicting roof falling and evaluating rook stability are presented. 文摘:论述了岩体声发射技术的基本原理,介绍了其在采矿工程中的若干应用成果:地应力测量、高应力区圈定、冒顶预测预报、稳定性评价。
- He had been bumming around the park all day. 他在公园里荡了一整天了。
- It is shown that regional initial rock stress state is controlled by larger faults and that heterogeneity and aeolotropism of initial rock stress field are caused by superposition of action of faults. 研究结果表明:区域原岩应力状态宏观上主要受几何尺寸大的断层的支配,局部范围内受复合断层的叠加扰动影响,造成了原岩应力状态的各向异性及非均匀分布特征。
- Bind down the ropes around the load on the lorry. 把绕在卡车上货物外面的绳子扎紧。