longwall的例句大全

analysis on site measurement of support pressure distribution law for seam of fully mechanized longwall top coal caving mining

综放开采煤层支承压力分布规律现场实测分析

analysis on strata pressure of fully mechanized longwall coal mining face in soft roof, soft coal and soft floor seam

三软煤层综采长壁工作面采场矿压分析

stoping practice of the longwall caving method along the dip

倾向长壁式崩落采矿法的回采实践

mining horizontal pillars with hydraulic roof propping in longwall caving method

在长壁式崩落法中用液压支柱护顶回采水平矿柱

modelling experiment for immediate roof with many cracks caving in longwall face

采场多裂隙直接顶破坏的模拟研究

application of gob-side entry retaining technology to transportation gateway of fully mechanized longwall mining face

沿空留巷技术在综采工作面运输顺槽的应用

Its successful selection and application are the prerequisite for successful longwall mining.

正确、合理地选择液压支架架型是长壁工作面采煤成功的前提和关键.

Today chock-shield support is extensively used to control the superjacent strata of longwall face.

目前,大量的长壁工作面采用支撑 —— 掩护式支架控制上覆岩层.

Modern longwall mining employs hydraulic powered supports at the face area.

现代长壁工作面采煤已在挖掘区使用液压支架.

The new technique increases the efficiency of longwall panel mining.

这种新技术提高了长壁盘区采矿的效率.

The roof slice longwall method increases the work of laying false roof for next slice.

长壁采煤法的采煤工艺具有多重特点:顶分层采煤增加了要为下分层填设假顶的工作.

Therefore its successful selection and application are the prerequisite for successful longwall mining.

是以正确的选择和应用液压支架是长壁工作面采煤乐成的先决前提.

Study on the Basic Theory of Longwall Top Coal Caving System

关于长壁放顶煤开采基础理论的研究

Application of the fully mechanized longwall sub-level caving technology in the large-angle angular surface mining

综放技术在大倾角俯斜开采中的应用

As increasing of mining depth, advancing of outputs of a single working face and changing of geological conditions, the disallowed gas concentration appears frequently at longwall top coal caving face in Lu' an mining district, blocks the farther advancing of producing level.

随着采深加大、工作面单产的提高及地质条件的变化，潞安矿区综放工作面瓦斯超限频繁，严重制约了综放集约化生产水平进一步提高。

Numeric study of damage for the surrounding bed in longwall mining

长壁回采围岩破损规律的数值模拟研究