longwall造句

Longwall actual mining technology for large inclined angle face
大倾角工作面走向长壁回采技术

Geological Factors Affected to Mechanized Longwall Mining and Its Evaluation
影响综采的地质因素及其评价

regular longwall along strike
沿走向规则长壁法

Technology of roadway retained for next sublevel applied to ending work of fully mechanized longwall coal mining face
综采工作面沿空留巷收尾技术

Ground pressure observing of rational staggered distance between doublelongwall faces in mining on confined aquifer.
承压水体上对拉面合理错距的研究

Fracture Characteristics of Floor Strata due to Double Longwall Mining on Confined Aquifer.
承压水体上对拉面开采底板岩层破坏规律

Practice in mining by longwall caving with artificial bottom pillars
人工底柱长壁式崩落法的开采实践

Pressure Self Bearing Principle of Roof and Roof Control in Longwall Coal Mining Face
回采工作面顶承力原理和岩层控制

This is the beginning of longwall mining.
这是长壁开采的开始。

Longwall Face Roof Behaviour and Immediate Roof Failure Pattern under Main Roof upper Boundary
老顶边界条件下采场矿压显现规律及直接顶破坏模式

Single unit face Joy longwall loading machine
一个单位的长壁工祖乔伊长壁工作面装载机

inclined longwall mining.
倾斜长壁采煤

longwall with caving
崩落式长壁开采

modified longwall system
变相长壁开采法

underhand longwall
下向梯段式长壁回采

longwall working with caving
顶板垮落长壁开采法

longwall remaining coal pillars support
长壁留煤柱支撑法

Application of supporting with full bolts and meshes for roadways driving along gob in detached longwall topcoal caving face
全锚网支护在综放孤岛面小煤柱护巷中的应用

Roof breaking and moving laws in steep LONGWALL STOPE
急斜长壁采场顶板破断和岩块运动规律

The effect of the inferior key strata breaking on weighting of longwall face
相邻亚关键层破断对采场来压的影响分析

Application of gobside 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

Rational coal caving step distance setting for fully mechanized longwall top coal caving face under soft fine sandstone roof
松散细砂岩顶板下综采合理放煤步距的确定

longwall fully mechanized top coal caving method
长壁综采放顶煤采煤法

Retrospection and prospect of Longwall top coal caving technology DISCUSSION OF THE OVERBURDEN STRATA MOVEMENT OF LONGWALL SUBLEVEL CAVING METHOD
综放开采技术回顾与展望放顶煤采煤法覆岩运动规律初探

longwall fully mechanized overhead caving coal mining
长壁综采放顶煤采煤方法