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- RESEARCH ON THE FRACTAL EFFECTS OF CRACK NETWORK IN OVERBURDEN ROCK STRATUM 采动岩体分形裂隙网络研究
- overburden rock stratum 上覆岩层
- 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
- A horizontal dislocation, as of a rock stratum, at a fault. 水平断层不正常的岩层水平变位或断错
- A horizontal dislocation,as of a rock stratum,at a fault. 水平断层不正常的岩层水平变位或断错
- To lie at an angle to the horizontal plane, as a rock stratum or vein. 下沉从地平线下降，如岩石层或岩脉
- An aquifer is a water-bearing rock stratum such as sandstone and chalk. 地下蓄水层是一些有水的岩石层, 如沙岩和白垩岩。
- To expose(rock strata)by erosion. 剥蚀因腐蚀而露出（石层）
- The downward inclination of a rock stratum or vein in reference to the plane of the horizon. 下沉矿层或岩石相对水平面的向下倾斜。
- To expose(rock strata) by erosion. 剥蚀因腐蚀而露出（石层）
- 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。
- Vertical stress makes rock stratum reforming voussoir beam, horizontal in-situ stress is the main source to cause the voussoir beam crushed. 竖直方向地应力使顶板岩层形成铰接拱结构，水平地应力是拱铰压碎的主要力源。
- Essential elements, i.e. source rocks, reservoir rocks, seal rocks, overburden rocks, and the related geological processes are involved in the petroleum system. 在油气探勘作业上，整合地质、地物及地化资料，进行石油系统的成因分析，包括油气生对移聚和封存，可以评估其油气潜能，做为矿区筛选及排序的重要依据。
- One of the crucial elements influencing the rock burst is the structure of roof rock stratum, especially the flinty and thick sandstone roof over the coal seam. 顶板岩层结构,特别是煤层上方坚硬、厚层砂岩顶板是影响冲击矿压发生的主要因素之一。
- Mechanics of Overburden Rock Mass in Mining 采动岩体力学
- For the unique hard water in Dunhuang that permeates along slender crevices, there is not a single opening which it does not enter. Any soluble substance in the rock stratum will be solved and carried away in all directions. 敦煌独特的硬水，顺着细小的缝隙无孔不入地渗透，再把岩层中的可溶性成分溶解后四处搬运。
- For the unique hard water in Dunhuang that permeates along slender crevices,there is not a single opening which it does not enter. Any soluble substance in the rock stratum will be solved and carried away in all directions. 敦煌独特的硬水，顺着细小的缝隙无孔不入地渗透，再把岩层中的可溶性成分溶解后四处搬运。
- The rock mass structure can be expressed by rock stratum effect thickness influence coefficient. It is more scientific then using roof rock and sand content in the study of coal seam gas preservation. 研究表明,煤层围岩岩体结构控制了煤层瓦斯的赋存,岩体结构可用岩层效应厚度影响系数来表示,应用这一参数研究煤层瓦斯赋存比用煤层顶板岩性及含砂率更科学。
- Comparing with thermoluminescence charactar of different volcanic rocks section, we will confirm eruptible stage to contrast in volcanic rocks stratum. 对不同剖面火山岩的热释光特征进行比较,可能确定其喷发期次而进行火山岩地层的对比。
