The Upper Triassic Series in the Zixing-Rucheng coalfield in southeastern Hunan is a set of grayish black sandy mudstone, fine sandstone, medium coarse sandstone and coal seams combination.
湘东南地区资汝煤田上三叠统为一套灰黑色砂质泥岩、细砂岩、中粗粒砂岩以及煤层等沉积组合，具有砂泥薄互层层理、斜波状层理、水平层理及大型交错层理等沉积结构。
The foundation of the dam for Dalong reservoir consists of the layer of medium-coarse sand with gravel, so it is difficult to be penetrated even by the high-power vibrator.
大隆水库大坝坝基为含卵砾中粗砂层，即使大功率振冲器也难以贯入。
The sandstones are mainly coarse, medium-coarse and medium sandstones.
砂岩以粗砂岩、中粗砂岩和中砂岩为主。
The stress ratio of CFG pile and soil which cushion used medium-coarse sand gravelly sand or cobbles has been studied.
利用载荷试验研究了CFG桩桩顶的中粗砂、砾砂、碎石褥垫层的桩上应力比。
The stress ratio of CFG pile and soil which cushion used medium-coarse sand gravelly sand or cobbles has been studied.
利用载荷试验研究了CFG桩桩顶的中粗砂、砾砂、碎石褥垫层的桩上应力比。
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