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- Intelligent analyzing the nonlinear time series of displacement of cavern surrounding rocks based on evolutionary SVM 基于进化SVM的洞室位移非线性时间序列智能分析
- cavern surrounding rocks 地下洞室岩体
- 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。
- In this paper,FLAC is adopted to simulate the surrounding rock stability of a belt drive conveyor cavern of Yangquan mine district during excavation and support by steps. 运用有限差分数值计算软件(FLAC),模拟分析了阳泉三矿芦南分区胶带驱动机硐室在分步开挖过程中围岩的稳定性。
- 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。
- 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。
- The surrounding rocks of arched roadways are much more stable than that of rectangular roadways. 圆弧拱巷道围岩稳定性要远大于矩形巷道。
- The heat and pressure from igneous intrusion cause the alteration of surrounding rocks. 入侵岩浆的热能和压力导致了围岩的变化。
- 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 deposit of valuable ore occurring within definite boundaries separating it from surrounding rocks. 一种有用的矿石沉积物,拥有明确的与周围岩石的分界线。
- 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
- Surrounding rocks classification plays a determinative role in the design and construction of tunnels. 摘要围岩分类对于隧道设计和施工起着决定性的作用。
- The results show that the cross-section shapes of roadways strongly influence the stability of surrounding rocks. 结果表明:断面形状对巷道围岩的稳定性有较大影响。
- Sometimes magma does not melt its way to the surface, but acting under the pressure of surrounding rocks, flows underground. 有时岩浆并不一直熔化到地表,而是在围岩压力的作用下在地底下流动。
- The increase in temperature influences the physical behaviour of the waste and the surrounding rocks and must, therefore, be kept under control. 温度的升高会影响废料以及围岩的物理状态,因此必须使之保持受控状态。
- Petrological and geochemical studies show that the differences of doposi-tional fabrics between the orebody and the surrounding rocks are not obvious. 浊积岩容矿不仅具有物理障(主要是压力和孔渗性)方面的因素,而且包含化学障(如活性铁和有机碳)因素;
- In the interaction process of surround rocks and support,the roof beam suffers from loading and unloading experience. 在支架围岩相互作用过程中,支架顶梁有一个先承载后卸载的过程。
- It takes some time to form the phenomenon of zonal disintegration of surrounding rocks with high in situ stress,but the time needed is not too long. 本文阐述了高地应力围岩分区碎裂化现象的形成需要经过一定的时间,但这段时间不会很长;
- Geochemical characteristics of magmatic rocks,surrounding rocks and rare earth elements in Shihu Gold Deposit are studied. 研究了石湖金矿床岩浆岩、近矿围岩及金矿床矿石稀土元素的地球化学特征。