| 1. | Study on roof control in shallow seam longwall mining
浅埋煤层长壁开采顶板控制研究 |
| 2. | Simulation on overlying strata ' s motion rule in shallow seam slice mining
浅埋厚煤层分层开采覆岩移动规律模拟研究 |
| 3. | Simulating test study in shallow seam mining under thick soil of the earth ' s surface
地表厚土层浅埋煤层开采模拟实验研究 |
| 4. | Numerical simulation on the breakage and falling of thick and hard roof in shallow seam
浅埋煤层厚硬顶板破断与冒落的数值模拟 |
| 5. | Study on three strap in water resouces preservation in yu - shu - wan shallow seam mining
榆树湾浅埋煤层保水开采三带发展规律研究 |
| 6. | The application of seismic prospecting method used in shallow seams to goafprospecting qi
浅层地震勘探方法在采空区勘查中的应用 |
| 7. | Protection pillar stability numerical simulation in shallow seam covered with rock soil and sand
砂土基型浅埋煤层保水煤柱稳定性数值模拟 |
| 8. | In accordance with the occurrence behavior of roof strata and the fracture characteristics of key stratum in shallow seam longwall mining , studied post - buckling behavior of roof key stratum in the process of mining by using initial post - buckling theory , which derived a critical load and a breaking span of the main roof during the first weighting , determined the final subsidence and the maximum rotation angle for broken key stratum , and presented an application with the example of daliuta 1203 face
摘要根据浅埋煤层顶板岩层的赋存特点和长壁开采时关键层的变形破断特征，应用初始后屈曲理论探讨了开采过程中顶板关键层的后屈曲性态，得出了老顶初次来压时顶板的临界载荷和破断步距，确定了顶板破断后的极限下沉量和回转角，并以神东矿区大柳塔1203工作面为例给出了工程实例。 |
