风巷

It is obtained that the zone width of starting cut is about the first weighting step, the zone width of face is changing between 23 times of period weighting step, the zone width near intake entry and return entry is about 0.70.8 times of the first weighting step, the height of trapezoidal surface is basically subject to the location of the key strata and the deformation, breaking and instability form of the voussoir beams structure.

更多到切眼侧带宽大约为初次来压步距，工作面侧带宽在23倍周期来压步距间变化，进风巷及回风巷附近带宽约为0.70.8倍初次来压步距，内外梯台面的高度受制于关键层层位及所形成砌体梁结构的变形、破断和失稳形态。

Analyzed the causes of "2.22" gas explosion disaster at Tunlan Coal Mine which led the death of 78 people.It was the breezeless condition of No.1 crossheading at 12403 working face in the coal mine's southern No.4 panel region that made the local gas accumulated to the explosive concentration.It was the electrical switch which lost its explosionproof ability in No.1 crossheading that ignited the gas.

分析了死亡78人的屯兰煤矿&2.22&特别重大瓦斯爆炸事故原因：该矿南四盘区12403工作面1号联络巷处于微风无风状态，造成瓦斯局部积聚达到爆炸浓度，1号联络巷内的电气开关失爆，引爆瓦斯。

At the unchange condition of the relative site for the high level gas drainage gateway,the gas control results for the coal mining face with double tailing gateway s in different location layout were resea.

在该模型上相对于工作面回风巷不同水平距离位置布置了4条内错尾巷，研究在高抽巷位置相对现场不变的条件下，不同位置组合的双尾巷治理工作面瓦斯的效果。

This article introduces the practice of releasing gas by using the wind coal drill in the big road of shaft,which shows that the technology is reasonably,the economic efficiency is remarkable,the security has guarantee,is a practical feasible effective way and has broad application prospect.

介绍了立井六采左13路18层大巷采用风煤钻释放瓦斯的实践，技术合理，经济效益显著，安全有保证，是切实可行的的有效途径，具有广阔的应用前景。

He founded Jiangyin Street Experiment Popular Library of Jiangsu Provincial Education College. He made an social investigation of bookstalls, and put forward propositions of guiding meaning.

他创建&江苏省立教育学院江阴巷实验民众图书馆&，大兴实地调查之风，以社会小书报摊为对象，对其调查分析、研究，提出具有指导意义的建议。

According to the failure analysis of the test well, that the drilling well locates at the site 30 m far from the outtake may improve the stability and the term of service.

通过对试验钻井破坏情况分析，钻井布置在靠近回风巷侧30 m以内，可能会提高钻井的稳定性和服务期限。

According to the simulation results, the position of fire source and the position of the highest temperature in the wall of return airway have a very small change with the increase of oxidation time and fire source temperature.

根据模拟结果，分析出在允许的时间和温度范围内，火源位置与回风巷壁面最高温度位置随着氧化时间和火源温度的增加，变化较小。

By the fullscale test of unsteady-flow fire in tunnel, applying aerodynamics of one-dimensional compressible unsteady-flow the relation between thermal power and thermal resistance in burning zone was analyzed, and its calculational methods were discussed. It is shown that besides heating swell, resistance and...

无论平巷或斜巷的燃烧，燃烧区的热动力势是最强的，其变化梯度为3～6Pa/m，压力最低点位于燃烧区的出口；热动力的概念把巷道一般流动损失、火区流动损失和火风压完全统一起来了，解决了实际巷道火灾燃烧区热力计算的困难，使火灾时期的风网解算更符合实际。

Means the parent directory, so this command means to execute "toolchain.sh," which is in the current directory.

代表父目录，所以这个命令就是执行当前目录下的"toolchain.sh"。

Yes,In fact,I'm on our city ream.

是的。事实上我是我们市队的。