roof dilapidation

用法例句

Similar simulated experiment for continuous mining and roof dilapidation of ore body underground;

矿体地下连续开采顶板崩落相似模拟试验

Technology of blast-induced caving roof and its application in No.92 orebody of Dachang Tongkeng Mine;

顶板诱导崩落技术及其在大厂铜坑92号矿体的应用

Using this model,we have simulated the roof caving characteristic and the stress distribution of surrounding rocks and analyzed the deformation feature of the surrounding rocks in the working face end.

02D数值模拟软件建立相应的分析模型,模拟了煤层开采过程中的顶板垮落和围岩应力分布特征,重点分析了工作面上下端头的围岩应力分布规律及变形特点;结合具体生产矿井的综采工作面现场情况,得出了综采工作面推进过程中的周期来压、采动影响范围和煤壁片帮等矿压显现特征,并针对开采中出现的问题提出了相应的安全防范措施。

Study on Mechanism of Induced Caving Roof and Control of Its Secondary Catastrophe Chain Effect

顶板诱导崩落机理及次生灾变链式效应控制研究

Mechanism of capping rock collapse by no-pillar sublevel caving

无底柱分段崩落法开采顶板围岩崩落机理

Numerical Simulation on Caving Process Zone Induced by Undercut

拉底诱导的岩体崩落过程区数值模拟

MODEL TEST STUDY OF DEEP-HOLE INDUCED CAVING IN MINING ENVIRONMENT REGENERATION

开采环境再造深孔诱导崩落模型试验研究

Study on the Criteria for the Rheological Fracture and Spontaneous Caving of Jointed Rock Mass under Inducement Conditions

诱导条件下节理岩体流变断裂自然崩落判据研究

Effect of Platelet-Activating Factor on Calcium Ionophore A23187-induced Acrosome Reaction in Human Sperm and Relative Research;

血小板活化因子对A23187诱导人精子顶体反应的影响及相关研究

Application of π type steel girder in broken easy caving roof

π型钢梁在破碎易冒落顶板中的应用

Roof breaking law along top-coal caving face

综放开采沿工作面倾向顶板垮落规律

A vertical pipe for carrying rainwater down from a roof gutter.

水落管从屋顶水槽接下的竖直导水管

Toll-like Receptor 4 Expression Mediates the Activation of Platelets Induced by LPS

血小板TLR4表达介导LPS诱导的血小板活化

Study of the Burst-Energy Principle of Rock Burst Induced by Roof Stratum and Its Application

顶板岩层诱发冲击的冲能原理及其应用研究

a molding at the corner between the ceiling and the top of a wall.

在天花板和一堵墙顶之间的角落里的塑造物。

The Theoretical Study on Cyclone Disaster Caused by Stope Roof Falling over Great Extent;

采场顶板大面积垮落的飓风灾害的理论研究

Analysis of Roof Caving Instability Mechanism of Large-Section Roadway Under Complex Conditions

复杂条件下大断面巷道顶板冒落失稳分析

Research on Air Bumping Disaster Induced by Large Roof Falling in Goaf

采空区顶板大面积垮落的空气冲击灾害研究

Study progress of platelets activation mechanisms induced by exercise;

运动诱导的血小板活化机制研究进展

Study on Signal Compounds Induced Nicotine Accumulation of Flue-Cured Tobacco after Topping;

烤烟打顶后诱导烟碱合成的信号物质研究

sublevel blast-hole method

深孔分段崩落采矿法