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- So this theoretical formulation is the complement of the past theoretical achievement, and has offered a kind of new method for theoretical calculation of plastic area of surrounding rock of roadway. 因此,该理论成果弥补了以往理论未考虑中间主应力的不足,也为巷道围岩塑性区的理论分析提供了一种新的理论计算方法。
- Study on deformation monitoring on surrounding rock of roadway in Xinglong Gypsum Mine 邢隆石膏矿巷道变形监测研究
- Keywords Surrounding Rock of Roadway;Micro-Crack;Macro-Crack;Crack Activating;Plank-like Structure;Flexure Breakage;Roadway Support; 巷道围岩;微观裂纹;宏观裂隙;裂隙活化;类板结构;屈曲破坏;巷道支护;
- Their use made the design of roadway surrounding rock supporting safer. 这些结果的应用使巷道岩石支护的设计更趋于安全。
- 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);
- surrounding rock of roadway 巷道围岩
- 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。
- The present method could make the supporting of roadway surrounding rock safe and economic. 按最优恒阻支护计算方法设计巷道支护,可以达到经济且安全的最佳支护效果。
- Similar Simulation Study on Crack Development Law of Surrounding Rocks of Roadway with Great-Thick Thin-Bedded Top Roof 巨厚薄层状顶板回采巷道围岩裂隙演化规律的相似模拟试验研究
- DEFORMATION AND FAILURE OF SURROUNDING ROCKS OF ROADWAY IN HIGH STRESSED SOFT ROCKS 高应力软岩巷道围岩变形破坏研究
- Many dynamic disturbances often lead to local instability of roadway surrounding rock and mining workplace and result in rockburst in coal mining. 煤矿生产中存在着大量的动力扰动,常导致采矿巷道和采场围岩局部失稳,诱发冲击矿压发生。
- 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。
- The relationship of roadway surrounding rock pressure and supporting performance is interacting and counteracting.Only coordination between them can make possible a better support. 巷道围岩压力与支护能力是一个相互作用与反作用的关系,两者之间必须协调才能取得较好支护效果。
- By appling surround rock strength theory,stiffener theory,and observating weighe of 2 # seam bolt support in Ximing Coal mine,determines the rational position of roadway and bolt paramters. 通过运用围岩强度强化理论和“刚性梁”理论,对2%23煤层的锚杆支护进行矿压观测,合理确定出巷道位置和锚杆参数
- The surrounding rock deformation of roadway 巷道围岩变形
- Three-dimensional Model Tests for Studying the Effect of Structural Planes with Different Dip Angles on the Deformation of Surrounding Rock of Roadways 用立体模型研究不同倾角的构结面对巷道围岩变形的影响
- New method for classifying the surrounding rock of coal roadway 煤巷围岩分类的新方法
- Structure Character of Roadway Surrounding Rock in Coal Mine 煤矿巷道围岩结构特征
- 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 Rock of Gibraltar is honeycombed with caves. 直布罗陀岩山上有许多洞穴。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries