Increasing recovery rate coal is one of key problem in studying wallcoal caving.

The caving of thick and strong roof stratum, key stratum, causes tremendous rock pressure in mine.

采场上覆岩层中的厚硬岩层, 即厚硬关键层, 其冒落会造成剧烈的矿山压力显现.

It is recognised as a national centre for caving and cave diving.

它是公认的国家级洞穴探险和洞穴潜水中心.

The foundation of coal bin inclines and cracks resulted from uneven foundation subsiding and caving.

某矿煤仓因地基不均匀沉降及塌陷而造成偏斜与仓身开裂.

The river was caving the banks.

河水在两岸冲了个洞.

Finally , the paper considers that the fully mechanized coal caving mining is helpful control outburst hazard.

具突出危险性的厚煤层采用综采放顶煤开采法对消突是有积极作用的.

Until recently, an experiment on block caving method has been made and is a success.

根据情况, 我们在该矿进行了矿块崩落法试验研究并获得了成功.

You should wear hard hats when caving to protect the head from bumps and falling rocks.

在开采洞穴时,你必须要戴上安全帽,以防止头部撞到突起物,或者被掉落的岩石砸伤.

Caving means exploring the passages underneath the hills.

洞穴探险运动是指探察山中的通道而进行的活动.

Sublevel caving without sill pillar is used in Xishimen Iron Mine.

西石门铁矿采用无底柱分段崩落采矿法开采.

The whole hotel is decorated with painting, caving and work of art.

屹立在318国道旁,绘画 、 雕塑、艺术品充满整个酒店,空气中充溢着文化与艺术的气息.

With the roof caving in, there were an increasing number of desertions.

由于大势已去, 逃兵的人数日益增多.

Study the automatic system of fully mechanized sublevel caving working face applying neural network control theory.

应用神经网络控制技术对综放工作面自动化系统进行了研究.

Analyses factors that affect cover caving ability of roof coal in sublevel caving mining method.

分析了放顶煤开采顶煤冒放性的影响因素.

He had always wanted to go caving .

他过去一直想探索洞穴。

The calculation on working resistances of supports has been one of key research questions sublevel caving.

支架工作阻力计算是综放开采研究的主要问题之一.

According to CPM buy, CPM enough to be, no matter how long caving, unambiguous.

按CPM购买, CPM够 了才算, 不管放多长时间, 毫不含糊.

Politically, however, they cannot afford to be seen as caving in to foreign pressure.

不过, 在政治上, 他们承担不起被视为屈从外国压力的代价.

The horizontal section top coal caving in steep seam is different from the gently inclined seam.

急斜煤层水平分段放顶煤开采与缓斜煤层不同,工作面沿煤层厚度的水平线布置,长度短.

Some residents are concerned about their roofs caving in.

一些担心他们的房顶有塌陷的危险.

The formation is unstable and the wall caving are severe.

地层不稳定,井壁垮塌严重.