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- Room-and-pillar method is used for mining in most gypsum mines,and a top gypsum layer with a certain thickness in stope is reserved to keep the roof stabilization of stope. 大多数石膏矿山采用房柱法开采,通过在采场中保留一定厚度的石膏层来维护顶板的稳定性,护顶层是影响采空区稳定性的重要因素之一。
- Keywords drilling;ultradeep well;casing;gypsum layer;failure;elastoplasticity;ABAQUS FEM; 钻井;超深井;套管;盐膏层;破坏;弹塑性;ABAQUS有限元;
- EVALUATION ON INFLUENCE OF THE PLIOCENE GYPSUM LAYER ON STABILITY OF DAM BASE AT A HYDROPOWER PLANT ON THE UPSTREAM OF THE YELLOW RIVER 黄河上游某电站上新统石膏夹层对坝基岩体稳定性影响评价
- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- The inner layer of the wall of a spore. 孢子内壁孢子壁的内层
- There is a fine layer of dust on the desk. 桌子上有一层薄薄的尘土。
- The middle, usually fleshy layer of a fruit wall. 中果皮果皮中间通常含肉较多的那一层
- Hemihydrate can be used instead of gypsum. 半水物硫酸钙可以用来代替石膏。
- The bottom layer is a mixture of sand and clay. 最下面的一层是沙和泥的混合物。
- A dense translucent, white or tinted fine-grained gypsum. 雪花石膏一种不透明的、白色或浅色的纹理细密的石膏
- A fine layer of dust covers everything. 所有的东西都盖了一层薄薄的灰尘。
- The gypsum slurry is pumped into a diked area. 我们用泵将石膏料浆打到一块用堤围起来的空地中。
- A layer, as of doubled-over cloth or of paperboard. 一层一层，如折叠过的布料或纸板的
- This method of handling gypsum is satisfactory. 这种输送石膏的方法是令人满意的。
- A surface, layer, or mass of frozen water. 冰面冻结的水的面、层或块
- A thin layer of bone, membrane, or other tissue. 骨骼、粘膜或其它组织的薄层
- Gypsum is the product of the process. 此方法的产物为石膏。
- Up to 5% of gypsum can be added to cement products. 水泥成品中最多可以添加5%25的石膏。
- A thin, flat layer or scale, as that of a fish. 外表组织薄而平的一层或鳞状物，如鱼鳞
- Huoxingbaitu, bentonite series products, gypsum. 活性白土，膨润土系列产品，石膏。
