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The copper is disseminated in small joint surfaces and cracks in the porphyries.

铜浸染在斑岩的细小节理面和裂隙中。

BIAN Zhi-hua,ZHANG Li-jie,JING Feng,YU Mei-wanAbstract: The fissure of soft rock of Mesozoic era and Cenozoic era isn't developmental normally. But there exist many pores in this rock and the cementation intensity of this rock is very low. Easy disturbance is notable. Mechanics parameters are valued after rebating test result of rock block. It makes mechanics index of weak foundation to be greatly lower than actual value.

中-新生代软岩一般裂隙不发育,但孔隙多且胶结强度低,易扰动性显著,其岩块试验成果折减后进行岩体力学参数取值,普遍造成软弱地基力学指标远低于实际值,是目前工程界面临的一大困惑。

4Basing on research findings of indoor experiment, Improved Convert Permeability Coefficients Method considering of crossed karst and cranny was put forward, FEM program KARSTCNPM used to calculate seepage in saturation and non-steady karst was reprogramed.

根据室内试验研究成果,提出了考虑岩溶与裂隙交叉局部水头损失的改进折算渗透系数法,改编了饱和非稳定岩溶渗流场有限元计算程序KARSTCNPM。

Spaces between rocks, fissures, strata lines and other recesses can be carved using trowels, screwdrivers or other common tools.

岩石之间的空间,裂隙,地层线和其他可以雕刻凹使用铲子,螺丝刀或其他常用工具。

The height of water flowing fracture d zone is 55 m by traditional esti- mation method,so that the water can not reach sand-gravel water-bearing bed.

覆岩主关键层位置距离开采煤层较近,是导致顶板导水裂隙高度偏高和顶板异常突水的根本原因。

The powder storage project of the Xilongchi Pumped Storage Power Station in Shanxi Province is a place that stores explosive powder and blasting equipment for the construction of the main bodies of Xilongchi Pumped Storage Power Station .

山西西龙池抽水蓄能电站炸药库是为主体工程施工集中存放炸药、爆破器材的地点,为寒武系灰岩,岩层近于水平,构造裂隙N-E向陡倾,在外力作用下卸荷开裂,溶蚀夹泥严重,开挖过程中时遇顶拱塌块、溶洞、断层,所以进行了锚喷支护。

Shimizu nose may be the outflow of cerebrospinal fluid, may indicate that the nasal cavity and the brain between the cracks, and this is very dangerous and emergency situations must be immediately sent to the hospital examination and treatment

鼻子流清水有可能是脑脊髓液外流,可能表示鼻腔与大脑腔间有裂隙存在,这是非常危险及紧急的情况,一定要马上送医检查治疗

The method of drilling by the wind coal drill ,the coal body produces the crack and releases gas under the conditions of the dynamic pressure function of mining field,then draining gas with drainage facility to govern the local high gas region at working surface are introduced.

介绍了利用风煤钻施工钻孔,在采场动压作用下煤体产生裂隙释放瓦斯,然后利用抽排设施抽放瓦斯,治理采面局部高瓦斯区域的方法。

Most coal beds have massive cracks and cleavages, and when seismic wave propagating in them, seismic wave will exhibit anisotropy.

大部分煤层存在着大量的裂隙和节理,地震波在其中传播时具有各向异性。

The study we have performed demonstrated that the main roof first broke with asymmetry character; gully mining-induced slope was divided into multilateral blocks by surface advance cracks. Furthermore, multilateral blocks rotated and subsided by the function of extrusion and friction between the broken rock block above the goaf and the rock mass advance the coalface.

冲沟坡体下开采时,基本顶初次破断具有不对称性;冲沟采动坡体被地表超前裂隙切割成多边块状,并在两侧坡体的夹持摩擦作用下缓慢回转下沉;相同地质条件下,坡角越大,采动坡体对工作面矿压影响越大。

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