工作面

The testing proves that it is available to ensure the working faces safety and increase the top-coal recovery that forcing blast top-coal and roof when the faces early working. The forcing blast method of the end top-coal is available, safety and reliable, it has a markedly effect to increase the recovery of the hard coal face.

试验证明，初采阶段采取强制爆破措施放出顶煤和顶板，是红会一矿坚硬特厚煤层综放工作面保证初采安全和提高初采顶煤回收率的有效措施，工作面端头的爆破强制破碎和放落顶煤，切实可行，安全可靠，对提高坚硬煤层综放工作面回采率效果显著。

It was necessary that the frontispiece of face was pre-supported in the especial stratum. Fourthly, by the model analytic value and the FEM numerical simulation, the advance reinforcement parameters were analyzed roundly, and its results explained that the parameters had optimal values. A series of formulations conforming loads born up for pre-reinforcement structure were given, and five rules for its design and choice were put forward.

全面分析了影响工作面超前预加固参数的因素；揭示了拱部超前预加固参数与地层参数、隧道开挖与支护参数等的内在联系；论证了地层预加固参数的最佳值概念；给出了确定超前预加固结构作用荷载的半拱法、全拱法和全土柱法理论计算公式；建立了隧道工作面上覆地层稳定性判别的准则；提出了工作面地层预加固参数设计与选择的5个指导原则；最后给出了一整套确定浅埋暗挖法隧道工作面地层预加固参数的动态设计方法。

This mine is in after geological to 21212 working face, 31605 working face, 21604 working face condition and mine situation undertake on-the-spot perambulate, made corresponding exploitation plan a few days ago, strive to be below the case with geological complex condition, reclaim the coal that can pick more as far as possible, the mine that makes good triangle coal and working surface ending work, reclaim with what utmost land increases coal resource rate.

该矿在对21212工作面、31605工作面、21604工作面地质条件和开采情况进行实地勘查后，日前制定了相应的开采方案，力争在地质条件复杂的情况下，尽可能将可采的煤炭多回收，并做好三角煤的开采和工作面收尾工作，以最大限度地提高煤炭资源的回收率。

Through the combined reform of the outer spaying of the coal cutter,the spraying of the beare,the spra- ying of the transfer spot and the Water curtain,which induce the dust concentration,the job condition has been im- proved and has reaeched the preceptorial purpose to realize the high efficiency and yielding of the working face.

通过对综采放顶煤工作面采煤机外喷雾、液压支架喷雾、转载点喷雾和风流净化水幕的联合改造，有效地降低了工作面粉尘含量，改善了工人作业环境，其对于实现工作面高产高效具有重要的指导意义。

Dust and aspiratory dust were monitored personally on the full-mechanized mining work face, full-mechanized tunneling work face and gun tunneling work face in the coal mine to investigate the harm of aspiratory dust to the workers underground.

针对呼吸性粉尘对矿井工人身体健康的危害，对煤矿综采工作面、综掘工作面、炮掘工作面等进行分工种个体性的全尘和呼尘监测，测定了各工作面粉尘的浓度、粉尘分散度和SiO2浓度。

This article take 9309 coal mining face in some mine as an example, through the analysis mine heat source, uses the airflow temperature forecast model, had forecast the distribution of airflow temperature in coal mining face and two cross heading channels, and has carried on the contrast with the measured results.

本文以某矿9309工作面为例，通过分析矿井热源，利用工作面风温预测模型，预测了工作面和两顺槽的风温分布，并与实测结果进行了对比，结果表明热源分析结合风温预测能对工作面的热害程度进行准确预测，这对于矿井通风设计及局部降温设计具有重要意义。

It was shown that coal seam floor failure depth of working face 2121 was 32.5 to 5 m, approximately three times as deep as that of shallow working face(in genera l,9.15 to 12.0 m). Coal seam floor failure depth increased with mining depth. Potential risk of water inrush through coal seam floor of working face 2121 is much higher for deep mining than for shallow mining.

试验结果表明：该工作面底板破坏深度为32.5~35 m，比300 m采深以内的工作面实测深度(9.15~ 12.0 m)增加2倍以上，说明随着开采深度的增加，煤层底板采动破坏深度呈明显增大的趋势，因此，在水压和破坏深度二者同时增加的条件下，2121工作面深部煤层开采的突水危险性远远大于浅部煤层。

2207 Face of Chensilou Coal Mine,summarize the difficulty and the key point of the safety management of full-mechanized mining face with high inclined compound roof ,adopt countermeasures to guard against the support crooked and guard against the scraper conveyer and mining machine to glide down.

通过对陈四楼煤矿2207工作面回采，总结出大倾角复合顶板综采工作面在防煤飞出工作面伤人、防支架歪倒、防刮板输送机上窜下滑、防采煤机下滑等安全管理方面的重点和难点，及采取的对策和措施。

According to the state of the working coal seam where the working-face 706 of Xiaonan Mine exists and the characteristics of present routine technical measures taken to prevent and father the spontaneous combustion, the theory of fuzzy comprehensive appraisal is applied to analyze the plan about fire-protection technique for the working-face 706 of Xiaonan Mine.

根据晓南矿706工作面开采煤层的情况及目前常规的防治自燃技术措施的特点，运用运用模糊综合评判理论，对该工作面开采进行自燃防治方案进行的分析，综合考虑影响防火的各种因素，给出了一种新颖、简单、科学评价方法，提出了该工作面防火技术的最佳方案，取得了理想的防治效果。

On the basis of the analysis, the simulation model of system dynamics for the productive system of the fully-mechanized coalface has been established in order to realize the simulation analysis of the productive system for the fully-mechanized coalface.

利用系统动力学理论，对影响综采工作面生产的主要因素进行因果关系分析，并在此基础上建立起综采工作面生产系统的&SD&仿真模型，以实现综采工作面生产系统的模拟分析。

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。