coal heading是什么意思

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用法例句

The deformation feature of deep shaft coal roadway is analyzed,and the reason for many kinds of support failures is studied.

分析深井煤层巷道围岩变形特征和支护失效的原因,提出此类巷道的内外结构耦合平衡支护原理。

The phenomenon of underground pressure and principle of surrounding rock control of deep shaft coal roadway are introduced.

以平顶山四矿戊九采区下山专用回风下山底鼓控制为工程背景,介绍了深井煤层巷道底鼓特点及其控制原理。

According to the current situation of supporting steep seam roadway,a new bolt-mesh-anchor support technology was put forward.

针对急倾斜煤层巷道支护现状,提出采用锚网索支护新技术对试验巷道进行支护改革。

In view of steeply inclined seam roadway support status quo,with the specific engineering practice problem,used similar material simulation test to have the contrast study on steeply inclined seam roadway applied Isteel support,bolt support and bolt-cable-beam support under same condition.

针对急倾斜煤层巷道支护现状,结合具体工程实践问题,采用相似材料模拟实验,对相同条件下急倾斜煤层巷道采用工字钢支护、锚杆支护和锚(索)梁网支护3种支护形式进行对比试验研究,得出了不同支护形式下的围岩变形规律、以及不同支护形式在急倾斜煤层巷道条件下的适应性及支护机理,从而为急倾斜煤层巷道支护决策提供依据。

Design and construction of high pressure water gate wall in seam gateway;

煤层巷道高压水闸墙的设计与施工

Research on bolt-steel mesh-anchor combined support technology applied in deep inclined seam gateway in Xinji No. 3 Mine;

新集三矿急倾斜煤层巷道锚网索支护研究

Base on the practical experiences of the bolt/steel mesh support in the seam gateway of Qianjiaying Mine,the air re- turn down-dip of the No.

为了加快生产矿井开拓巷道的进尺速度,缓解采掘衔接紧张局面,介绍了锚网支护施工过程和参数设计依据,根据钱家营矿煤层巷道锚网支护实践经验,将十采区回风下山布置在煤层中,该巷道施工采用锚网、喷、锚索联合支护,加快了开拓巷道的施工速度,提高了煤炭回收率。

Outburst Prevention Technology Incoal Exposure in the Driving of the Open Seam Roadway

浅谈掘进穿煤层巷道的揭煤防突技术

Study on Gateway Top Caving Technology for Steep-inclined Coal Seam

急倾斜煤层巷道放顶煤回采工艺研究

Gateway Layout Technology of High Gassy Thick Seam in Tunliu Mine

屯留煤矿高瓦斯厚煤层巷道布置技术

Support Technology of Roadways Driving in Steep Middle Thick Coal Seam

急倾斜、中厚煤层巷道掘进支护技术

The anchor net supporting application in high seam tunneling of Sanyuan coal industry

锚网支护在三元煤业厚煤层巷道掘进中的应用

Study on the Support Technology of the Rodaway in the Loose Coal Seam Below Close Range Goaf;

近距离采空区下松散煤层巷道支护技术研究

Study on Technology of Pre-stressed Bolt (Cables) Supporting in Inclined Roadway;

倾斜煤层巷道预应力锚杆（索）支护技术研究

Studying on Deformation Features of Surrounding Rock of Large Sectional Roadway in Coalmines and Supporting Parameters

大断面煤层巷道围岩变形特征与支护参数研究

The Optimizing Design of Bolting Support Multi-coal Seams and Little Intervals Roadway;

近距离煤层群巷道锚杆支护优化设计

Research on Support of 9~# Difficult Mining Coal Seam of Fully Mechanized Mining Tunnel in Ximing Coal Mine

西铭矿9~#难采煤层综采巷道支护研究

Research on the roadway stability under closed distance seam group

近距离煤层群开采下巷道稳定性研究

Support of Full Seam Dynamic Gateway in Ultra Thick Broken Seam Suffered with Igneous Rock Intrusion

火成岩侵入的特厚破碎煤层全煤动压巷道支护

Numerical Simulation of Anchored Bolt Supporting for Roadway in Small Coal Pillar with Large Inclined Angle

大倾角煤层小煤柱巷道锚杆支护数值模拟研究

Stability Analysis of Mining Gateway under Seam Group Mining with Closed Distance Between Seams in Cuijiazhai Mine

崔家寨煤矿近距离煤层群开采巷道稳定性分析

Design of rational width of coal pillars in gateways in gently inclined shallow coal seams

浅埋缓斜煤层回采巷道合理煤柱宽度设计

Rational Roadway Layout Pattern for Mining Coal Seam Group with Close Quarters in Hedong Colliery

河东煤矿近距离煤层群开采巷道合理布置方式

Roadway Mechanized Excavation Technology for the Close Distance Seams for the Composite Lay Roof under Goaf

近距离煤层采空下复合层顶板巷道综掘技术

A tentative study on fault traversing roadways and the design method for water separation coal pillar

巷道过断层及断层防水煤柱留设方法初探