| 1. | Numerical simulation of failure process of overburden rock strata caused by mining excavation
采动影响下覆岩垮落过程的数值模拟 |
| 2. | Elementary analysis on breaking feature of overburden rock during mining under special nappe structure
特殊推覆体下开采覆岩破坏特性浅析 |
| 3. | Investigations of the raw material in hardcoal - mining ; macroscopic classification and description of overburden rock
煤矿原料勘探.覆层岩石的宏观描述和分类 |
| 4. | Research on site measurement and numerical simulation method of development height for crack zone of overburden rock
覆岩裂缝带发育高度的实测与数值仿真方法研究 |
| 5. | The experimental research of numerical simulation for the depth mining ' s effect on the law of movement and failure of overburden rock seam
采动对岩层移动破坏规律的数值模拟试验研究 |
| 6. | Therefore , in the process of load transfer within the unconsolidated confined aquifer , the key strata of overburden rock are prone to have a compound breakage when the load on the upper interface of bedrock is great and the bedrock is very thin
在松散承压含水层的载荷传递作用下，作用在基岩顶界面的载荷较大，当基岩厚度较薄时，采场覆岩关键层易产生复合破断。 |
| 7. | Based on its special geological and mining conditions of qidong colliery , the cause of water bursting of loose aquifer in the 4th lineage in 7 ( subscript 1 ) 14 full - mechanized mining face of the first mining area was analyzed and technology method of preventing the 4th loose aquifer was discussed according to the occurrence characteristics of loose aquifer and damage characteristics of overburden rock in 7 ( subscript 1 ) coal seam
摘要根据祁东煤矿特殊的地质采矿条件，结合松散含水层赋存特征及7 (下标1 )煤层覆岩破坏特点，分析了一采区7 (下标1 ) 14综采工作面第四系松散含水层出水的原因，探讨了防治四含水的技术途径。 |
