工作面

This article applies the fuzzy similar prior matrix theory and "Haming distance", establishes the classified model on working face.

本文应用模糊相似优先比矩阵理论和"Haming 距离"法建立了回采工作面分类模型。

Based on the analysis of dip angle, friction coefficient between rigid bodies, influence effect of floor sliding block and roof fracture rock-mass, working resistance of support as well as compound characteristics of face surrounding rock, main factors which lead to destabilize in system "R-S-F" were obtained, and the controlling pattern of dynamic stability of firming bedding, controlling keys, achieving the goal were also established.

通过对工作面围岩组成特征、支架工作阻力、顶板破断岩块及底板破坏滑移体影响效应、刚体之间的摩擦因数以及煤层倾角等因素的分析，给出了引发"R-S-F"系统失稳的主导参数，确定了"稳固基础，控制关键，达到目的"的"R-S-F"系统动态稳定性控制模式和现场生产管理过程中需注意和解决的关键技术问题。

The selection principle of the roof control parmeters is introduced at the blasting caving coal face in three soft coal seam.

介绍了三软不稳定煤层炮采放顶煤工作面顶板控制参数的选择原则。

First of all, through reviewing on the spot and collecting a great deal of first-hand data, which is about hydrogeologic condition, blasting parameters and the effect of blasting. Then combining with the practical experiences and referring to relative literatures, designing project has been put into practice in order to reach a best result of optimization.

然后结合工程实践和查阅相关文献资料进而初步决定炮采面爆破施工的相关参数，采用正交实验法，安排设计优化方案进行现场爆破试验，结合现场工作面爆破的效果，探讨并优化爆破参数。

The research results indicate that (1) fault-failure-type water inrush occurs more often than floor-failure-type water inrush under the existence of normal fault;(2) the influence of fault step and dip angle on the feature and position of water inrush is not evident, and water inrush may occur at both coal layer and the floor near working face;(3) the distance of coal column for preventing water inrush should be increased with the increase of fault step and dip angle.

得出以下结论：(1)当存在正断层时，多发生断层破坏型突水，而底板破坏型突水发生的几率较小；(2)突水性质和突水发生位置受断层断距和倾角的影响不大，煤层和采煤工作面附近的底板围岩都可能成为突水涌出点；(3)随着断层断距和倾角的增加，防水煤柱的合理留设距离应随之增大。

There are several techniques for working the face of the stope.

工作面回采技术有好几种。

So integrating with all these advantages of mechanized coalmining is the development direction of production technology of coal industry stope.

综合机械化采煤具有产量大、效率高、成本低、改善作业环境、减轻笨重的体力劳动等优点，是煤炭工业回采工作面生产技术的发展方向。

How to select the sealing position for stope face after mining will greatly effect the safety of mine production.

回采工作面采后密闭位置的选择合理与否，对煤矿安全生产起着至关重要的作用，现结合具体要求，提出密闭位置选择方法，以确保煤矿安全生产。5 sealed coring

On the base of grade model and the existing mining system, the exploration workflow that contain the stope and working surface is designed.

并以品位模型为基础，结合矿山已有开采系统，进行了矿山设计，设计了采场和工作面。

The use finished, must clean up the streak plate promptly the working surface, then spread pickling oil.

使用完毕，要及时清理划线平板的工作面，然后涂上一层防锈油。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。