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- 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);
- 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。
- 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
- surrounding rock of roadways 巷道围岩
- Fault tree analysis for collapse of roadways with fractured surrounding rock and high tectonic stress in Jinchuan mine No. 金川二矿区不良岩层采场巷道片帮冒顶事故树分析。
- 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 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 results show that the cross-section shapes of roadways strongly influence the stability of surrounding rocks. 结果表明：断面形状对巷道围岩的稳定性有较大影响。
- 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。
- 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 Rock of Gibraltar is honeycombed with caves. 直布罗陀岩山上有许多洞穴。
- 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。
