工作面

Under the condition mentioned above there are so much disadvantages such as dispersal control equipments, large space occupied, complicated connection, high fault rate and so on which will lead to the suspending power supply to local fans and lead to ventilation to the turnned off planlessly and further result in accumulation of gas.

矿用局部通风机是煤矿井下掘进通风不可缺少的重要设备，使用量大、应用范围广，承担着为采掘工作面提供新鲜风流、排出有毒有害气体和粉尘、改善作业场所环境条件等重要任务，其工作可靠性直接影响着煤矿的安全生产和经济效益。

Fully mechanized face ; respirable dust ; quality of environment ; weighted average value ; index for evaluation

综采工作面；呼吸性粉尘；环境质量；加权平均值；评价指标

Wangzhuang Coal Mine system is basd on heading machine robotization technology .The new mechine achieve many new fuctions, such as automatic cut-off section, track-line monitoring of cutting, remote control, heading machine automated monitoring or dynamic information and so on. It reduces the labor intensity, improves the operating environment and productivity.

摘 要：王庄煤矿工作面系统以掘进机自动化技术为主导，研发的自动化掘进机实现了断面自动截割成型、截割轨迹在线监测、远程遥控、掘进机动态信息自动化监控等功能，极大地降低了工人的劳动强度，改善了作业环境，提高了生产效率。

In view of the compound hard roof of Six picks the area,through carrying on the comprehensive servation and the mechanics analysis appeared to pressure appears of the working face production process.

针对复合型坚硬顶板的六采区，通过对工作面生产过程的矿压显现进行了全面观测和力学分析。

Made according to Standard JB/T-99,material HT250, working surface made by skiving,used to tese the

按JB/T7977-99标准制造，材料HT250，工作面采用刮研工艺，是用来测量工件的直线和平面度的量具，使用温度

Made according to Standard JB/T7974-99,working surface made by skiving,used for rubbing of workpiece and repairing of measuring tools.

按JB/T7974-99标准制造，工作面用研磨工艺用于制作的研磨，量具修理，用本产品研磨后的制件表面粗糙度Ra≤0.08μm。

Through analyzing the problem of the coal wall support, top-coal caving and the design of powered support,the author explains the method to control the coal slabbing and the measure of powered support design and the collocation of the rear transport pan.

通过对仰采放顶煤工作面煤壁支护、放顶煤问题、液压支架设计等方面的分析，说明在仰采工况下控制煤壁片帮方法以及液压支架设计、后部输送机布置应采取的措施。

23123 Working face as an example,the problem in the coal mining of large-angle underhand stoping is analyzed.

在大角度俯采条件下，以23123轻放工作面为例，对回采过程中存在的问题进行分析，并提出解决办法，成功实现了轻放工作面的大角度俯采，并为类似地质条件的煤层开采提供了借鉴经验。

Through research of this paPef, mechanisms and theories and teclmiques ofprevention and cure of shallow roof disaster and goaf nature fire disaster under thickwind sands are primarily established.

通过本论文的研究工作，初步建立起厚风积砂下浅埋工作面顶板灾害和采空区自然发火灾害发生的机理及防治理论与技术。

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

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。