查询词典 caving

The GOB underlying highway is simulated by non-linear finite element software ADINA which considered three belts of superjacent rock body in GOB region:caving belt,crevasse belt and bending distortion belt.

中文摘要：运用非线性有限元软件ADINA对高速公路下伏采空区进行模拟，模拟考虑了采空区覆岩体三带：冒落带、裂隙带和弯曲变形带。

The fully mechanized caving coal mining under the railway in mine area will result in difficult maintenance of railway because of great deformation and subsidence speed of terrene and railway.

在矿区铁路下进行放顶煤开采所引起的地表及铁路的变形量大，变形速度快，从而导致矿区铁路维护困难。

A conclusion is drawn that the air leakage intensity of goaf along the caving uncompacted zones around solid wall boundary is relatively large, namely, the air leakage intensity of two ends of working face is large, and the flow lines can be extended to the deep parts of goaf.

得到采空区漏风强度沿固壁边界附近的冒落非压实区相对较大，工作面上下端附近处的漏风强度很大，并直通采空区深部。关键词采空区，漏风流态，有限元法

Regarding the density data and acoustic data in logging material as restriction, it also establishes undrilled district log through model seismic inverse, then, calculates elastic constant of rocks, density constant of rocks and even the profile of the following three pressures (pore pressure, caving pressure, fracture pressure). In the end, this thesis can determine safe drilling mud density windows, provide reference for drilling design, guides safe drilling and decreases the occurrence of accident.

将测井资料中的密度数据或是声波数据作为约束条件，通过模型地震反演，构建待钻区域的测井曲线，从而可以用理论和处理手段上比较成熟的测井分析的方法，进行岩石弹性和强度参数的计算，计算地层的三个压力(孔隙压力、坍塌压力、破裂压力)剖面，最终确定安全钻井液密度窗口，为钻井设计提供参考，指导安全钻井，减少钻井事故。

When the roof overhangs well into the gob and requires induced caving, the chocks can provide access to the gob.

当顶板overhangs早已进入采空区，并要求诱导崩落， chocks可以充分利用采空区。

With the increasing of the bedrock thickness, pressurized pace was increased gradually, the roof caving and surface subsidence were gentled step by step. When the thickness of roof bedrock was larger than 60m, the bench subsidence was not occurred, and the value of surface subsidence was also small. The mining technology was proper and highly active, and the support programme was feasible. The roof was controlled effectively by the support system, and achieved safety mining.

随着基岩厚度的增加，顶板来压步距逐步增加，顶板垮落与地表下沉越来越缓和，基岩厚度大于60m时，顶板来压不再出现台阶下沉，地面下沉量较小；针对不同厚度基岩提出的采煤方法合理，高效，支护方案可行，能够有效控制顶板，实现安全生产。

In order to discuss the effect of overburdens under injecting grouts in separate layers on the morphology of the water flowing fractured zone, continuous exploration for failure characteristics of the overburden of working face 14308 of Dongtan Coal Mine under injecting grouts in separate layers and fully mechanized sub-level caving condition was processed by the method of underground uphole water injection technology by intervals with bore-head leaking multi-loops affusion system.

为了探讨覆岩离层注浆条件对导水裂隙带形态的影响，采用前端泄露式多回路注水系统，应用井下仰孔分段注水法对东滩煤矿14308工作面覆岩离层带实施注浆充填条件下综采放顶煤导水裂隙带的破坏特征进行了连续探测。

Static ropes are used for rescue, caving and rappelling, but do not stretch enough to absorb the impact of a leader fall when climbing.

静力绳用于救援，探洞和下降，但是其延展性不足以吸收领攀者冲坠的冲力。

Conyoneering is a combination of climbing, caving, backcountry hiking, and rappelling.

攀峡者1：攀峡结合了攀爬、凿洞、荒野远足以及攀绳下滑。

According to the need for study on methane movement law in fully mechanizedsublevl caving stopes,the methane rising and pressure diffusion theory is put forward.

依研究综放采场瓦斯运移规律的需要，提出矿井瓦斯气体浮升与压强扩散理论。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！