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- surrounding rocks of gateway 巷道围岩
- Method of Support Vector Machines for Classifying Surrounding Rocks of Gateways 回采巷道围岩分类的支持向量机方法
- Study on the Fuzzy Equivalence Cluster of Stability of Surrounding Rock of Gateways in Coalmines 回采巷道围岩稳定性模糊等价聚类分析
- The surrounding rocks of arched roadways are much more stable than that of rectangular roadways. 圆弧拱巷道围岩稳定性要远大于矩形巷道。
- The differentiability of the initial stresses and elastic constants of the surrounding rocks of tunnels is discussed firstly from the point of view of finite element method. 从有限元数值计算的角度对岩土工程参数的可辨识性进行了分析。
- In view of the brittleness of the surrounding rocks of underground roadways, it is best that the contour of roadways takes the shape of a pressure curve. 正>目前煤炭工业中地下巷道维护所用的支护形式,不外被动支护(围岩破坏后作用于支架,如砌(石旋);
- The deep roadway surrounding rock of Jinchuan No.2 mine area was crumbly and had obvious creep. 金川二矿区深部巷道围岩岩石破碎,蠕变特性明显,地应力大,巷道变形严重,巷道返修量大,严重制约了矿山的发展。
- It was shown that there was alternation of strong and weak strength-softening region in the surrounding rock of deep roadways. 研究结果表明:深部巷道围岩中存在围岩强度强、弱软化区域交替出现的现象;
- The surrounding rock of 9300 drift is of plastic soft type. Because of great ground pressure, rock movement and long action duration, the support facilities were destroyed. 9300平巷由于围岩为塑性软岩体,地压、位移大,且持续时间长,因而巷道支架破坏严重。
- The surrounding rock of the entry in strongly weathered zone has more fissures which lower the rock strength,and the maximum roadway dimension will be limited consequently. 强风化带中的回采巷道,围岩裂隙增多、强度降低,巷道的最大尺寸将受到限制。
- By arranging the calculating outcome, it is studied that the influence of state of stable gob on the stress and displacement of surrounding rock of gob entry driving. 通过对计算结果整理,分析了采空区压实状况对沿空掘巷围岩稳定性的影响。
- In solving the problem of deformation in surrounding rocks of the overlying coal entry caused by upper protective seam mining, reinforcing the surrounding rocks by grouting is a feasible method. 摘要为了解决下保护层开采对上覆煤层巷道围岩变形的影响,采用注浆加固巷道围岩是一种可行的方法。
- Both brothers are rocks of our club. 兄弟俩都是我们俱乐部的中坚人物。
- Influenced of coal pillar width on deformation and fracture of gateway surrounding rocks in fully mechanized top-coal caving mining 煤柱宽度对综放回采巷道围岩破坏场影响分析
- By means of numerical analysis and the practise, this paper studies the influenceof state of stable goaf on the stress and displacement of surrounding rock of gob entry driving. 采用数值分析法并结合现场实际,研究了采空区压实状况对沿空掘巷围岩应力和位移的影响。
- Next generation of gateway cities. 下一代门户城市。
- Rocks of prejudice must be removed. 必须排除偏见的险阻。
- This paper analyses the deformation characteristics of surrounding rock of entries under the action of tectonic stress, and proposes the controlling measures of entry deformation and breaking. 本文分析了构造应力作用下回采巷道围岩的变形特点,在此基础上,提出了构造应力作用下巷道变形破坏的控制措施。
- The Rock of Gibraltar is honeycombed with caves. 直布罗陀岩山上有许多洞穴。
- Analysis of relationship between joint condition and stability of surrounding rock of openings and mining areas is completed. Using CSIR geomechanical classification method,assessment on rock mass quality in the mine is provided. 根据矿区工程地质、水文地质和节理裂隙发育调查统计资料 ,矿区地应力测量和矿岩岩石力学性质试验结果等 ,采用CSIR地质力学分类方法 ,对矿区分布的主要岩组进行的岩体质量分级评价。