coal output

On the model experiment platform of HSB with helix loader ,draught velocity,roller rotary speed, section shape of coal of impact extent for output quantity of coal and optimum matching among three factors were confirmed by orthogonal experiment method.

在螺旋装煤机式水平煤仓模型实验台上,通过正交实验,确定牵引速度vq,滚筒转速n,煤的断面形状S三因素对煤仓输出煤量的影响程度和三者之间的最佳匹配关系。

Application of hydraulic flushing technology in severe outburst coal;

水力冲孔技术在严重突出煤层中的应用

(Adopting the) measure of hydraulic extrusion at outburst coal seam,stress concentration region of coal seam was moved forward,pressure relief region was widened,and the gas was released ef.

在突出煤层采用水力挤出措施,可使工作面前方煤体应力集中带前移,卸压带增宽,同时大幅度释放了煤体中的瓦斯,取得了明显的防突效果,巷道掘进速度提高了1。

The outburst coal seam usually appears to the spray holes phenomenon in the process of eliminating outburst by drilling holes construction.

突出煤层在采用钻孔施工消突过程中,经常出现喷孔现象,造成瓦斯超限,给安全生产带来极大的安全隐患。

It is a new technology developed in recent years using the VLD-1000 drilling rig made in Australia which can drill with the depth of 1 km to drill in an outburst coal seam for pre-pumping gas.

利用澳大利亚生产的VLD—1000型千米钻机,在突出煤层掘进中打钻预抽瓦斯是近几年发展起来的一项新技术。

The significance of predicting gas outburst region is intruduced by noncontact pit perspective detecting outburst coal.

介绍了利用无线电波坑道透视技术进行瓦斯突出煤体探测的物性前提及电磁波在由突出煤体和非突出煤体组成的瓦斯突出煤层中传播时的电性响应 。

Characteristics of triaxial creep and constitutive relationship of outburst coal;

突出煤三轴蠕变特性及本构方程