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- surrounding rock loosen circle 围岩松动圈
- This paper deduced the formulae to calculate the parameters of shotcreting and bolting in three types of surrounding-rock-loosened ring individually from the theory of surrounding rock loosened ring. 以围岩松动圈理论为依据,分别对三类围岩松动圈的巷道围岩全长胶结锚杆的锚喷支护参数进行了公式推导及计算。
- Application of Sonic method in determining surrounding rock loosening belt of underground cave 声波法在测定地下洞室围岩松弛带中的应用
- It is possible to use Gurit without damaging the surrounding rock. 使用古力特炸药将完全可能不造成对围岩的破坏。
- On the basis of the theory of limiting equilibrium,the paper further deduces the theoretical formula of the fragmentation circle radius in surrounding rock through reasonable hypothesis. 在极限平衡理论的基础上,通过合理的假设,进一步推出了围岩破碎圈半径的理论计算公式。
- The drilling fluid may interact with the surrounding rock in other ways. 钻井液可能会以其它方式与周围的岩石相互作用。
- If the volcano becomes inactive and cools, surrounding rock may be worn away. 如果火山变得不活动并冷却下来,围岩就可能被剥蚀掉。
- Their use made the design of roadway surrounding rock supporting safer. 这些结果的应用使巷道岩石支护的设计更趋于安全。
- A change within an intrusive igneous rock caused by the assimilation of portions of the surrounding rock. 内变质作用由于周围岩石同化作用而在侵入火成岩内部产生的变化
- loose circle theory of surrounding rock 围岩松动圈理论
- loosing circle of surrounding rock 围岩松动圈
- 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。
- If the surrounding rock is soft and is later worn away, the walls remain and form ridges called dikes. 如果围岩柔软,日后又被剥蚀掉,这种岩壁就下来形成山脊,称为岩墙。
- On the Relation between Alteration of Surrounding Rock and Gold Mineralization in the Xinchen Gold Ore Deposit. 浅谈新城金矿床围岩蚀变与金矿化的关系
- The present method could make the supporting of roadway surrounding rock safe and economic. 按最优恒阻支护计算方法设计巷道支护,可以达到经济且安全的最佳支护效果。
- A small rounded lump of a mineral or mixture of minerals, usually harder than the surrounding rock or sediment. 矿的结核一种矿物或矿物混合物的小圆块,通常比表层岩石或矿渣坚硬
- The deep roadway surrounding rock of Jinchuan No.2 mine area was crumbly and had obvious creep. 金川二矿区深部巷道围岩岩石破碎,蠕变特性明显,地应力大,巷道变形严重,巷道返修量大,严重制约了矿山的发展。
- The four common surrounding rock mass classification methods,Q-system,RMR method,HC method,and BQ m. 采用Q系统、RMR分类、水电规范HC分类、国标BQ分类等4种常用围岩分类方法对该隧洞进行了围岩分类。
- Anchor concreting is an effective support technique to control surrounding rock deformation and keep tunnel stability. 锚杆注浆是一种行之有效的控制围岩变形和保证巷道稳定的支护技术。
- The effect of the span of cavern, and the water pressure in cavern on stress in surrounding rock is also studied. 随着采深和溶腔跨距的增加,溶腔围岩的压力峰值的大小及峰值点距溶腔边缘的距离也在不断增加,而溶腔的极限跨距则减小。