1.
Influence of mining height of main roof on broken length
采高对浅埋煤层老顶岩层破断距的影响
2.
Safety Mining Feasibility and Coal Face Support Control under Main Roof of Thick Igneous Rock
厚层岩浆岩老顶下安全回采的可行性及支护控制
3.
thin layers of rock used for roofing.
用来盖屋顶的薄岩石层。
4.
Detector of Coal Seam Roof Strata Based on S3C44B0X Framework
基于S3C44B0X构架下的煤层顶板岩层探测器
5.
The older strata gradually disintegrate.
较老的岩层渐渐风化。
6.
Comparison of strata movement between section and slicing of top coal mining in steep and thick seams
急斜厚煤层分层与分段放顶煤岩层移动对比
7.
Main roof first collapse law and measure of controlling roof in seam with approximate shallow depth
近浅埋煤层老顶初次垮落规律及控顶措施
8.
They said that there was likely to be oil in the crests of folds of rock layers.
他们认为在岩层褶皱的顶部可能会有石油。
9.
Study on Failure Law and Support Technique of Stratified and Weak Rock Roof of Roadway;
煤巷层状软岩顶板破坏规律及支护研究
10.
Study on the Surrounding Rock Stability and Safety Control of Roadways Roof Embedded Weak Intercalated Seam;
软弱夹层顶板巷道围岩稳定与安全控制研究
11.
Application of high density resistivity method to determination of aquifer thickness in top rock
应用高密度电阻率法探测顶板基岩含水层厚度
12.
ANALYSIS FOR WATER-INRUSH MECHANISM OF ROOF'S KARST WATER FOR INFLUENCE OF FAULT ACTIVATION
断层活化引发顶板岩溶水突水机理分析
13.
Technology of Safety and High Efficiency Mining Face under Extremely Hard and Thick Igneous Roof
特硬厚层火成岩顶板工作面安全高效开采技术
14.
The selecting type of the support and roof control in soft rock coal seam floor
软岩底板煤层支架选型及顶板控制研究
15.
Direct roof strong karst aquifer water tunnel boring technology to combat
直接顶板为强岩溶含水层巷道掘进防治水技术
16.
Analysis of strata dynamic crack characteristics upon fractured roof based on optical peephole
基于光学窥视的破碎顶板岩层动态破裂特征
17.
Numerical Simulation of Roof Stratum Effect on Coal Mass Burst
顶板岩层特性对煤体冲击影响的数值模拟
18.
Study on Complex Active Support System of Seam Gateway with Thick Carbonaceous Mudstone Roof
厚层炭质泥岩顶板煤巷复合主动支护系统研究