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- 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。
- The practices showed that the two stage coupling grouting technology is an effective access to solve the difficult support problem of the incompact and fractured surrounding rock. 实践表明,两步耦合注浆技术是解决松散破碎围岩支护的有效途径。
- If the surrounding rock is soft and is later worn away, the walls remain and form ridges called dikes. 如果围岩柔软,日后又被剥蚀掉,这种岩壁就下来形成山脊,称为岩墙。
- Research and application of two stage coupling grouting technology in incompact and fractured surrounding rock of mine roadway 松散破碎围岩两步耦合注浆技术的研究与应用
- It is found that the main problems are the uncoupled strength and the uncoupled regidity between the support and the surrounding rock in the soft rock. 文中认为目前煤矿软岩巷道支护存在的主要问题是支护体与围岩之间的强度或刚度的不耦合问题。
- It is possible to use Gurit without damaging the surrounding rock. 使用古力特炸药将完全可能不造成对围岩的破坏。
- 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。
- Based on the measured results and field survey, the cause of the failure and deformation of the surrounding rock around soft rock laneway in MaLuPing mine are discussed. 根据现场调查和实测结果,分析了马路坪矿软岩巷道围岩变形和破坏的主要原因。
- SUN Xue-yi.Grouted rock bolt used in underground engineering in soft surrounding rock or high stress region[J].Journal of China Coal Society,1984,9(2):61-69. [4]孙学毅.;高应力地区和软弱围岩地下工程砂浆锚杆[J]
- Abstract The design, blasting techniques and outcomes of maintaining a roadway with soft surrounding rock under overhead mining using destressing are introduced in this paper. 本文介绍了利用卸压法维护跨采软岩巷道的施工设计、爆破工艺技术及取得的成果。
- fractured surrounding rock 薄矿脉
- The drilling fluid may interact with the surrounding rock in other ways. 钻井液可能会以其它方式与周围的岩石相互作用。
- If the volcano becomes inactive and cools, surrounding rock may be worn away. 如果火山变得不活动并冷却下来,围岩就可能被剥蚀掉。
- 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。
- A change within an intrusive igneous rock caused by the assimilation of portions of the surrounding rock. 内变质作用由于周围岩石同化作用而在侵入火成岩内部产生的变化
- To study the coronal approach in the complex midfacial fracture surrounding the zygomatic bone, 9 cases with complex midfacial fractures surrounding the zygomatic bone were analyzed. 为研究头皮冠状位切口在以颧骨为中心的面中部复合骨折中重建骨骼形态的应用,对9例以颧骨为中心的面中部复合骨折,分析应用冠状位切口的治疗方法、优越性、治疗效果、并发症及预防。
- The construction of Tianchi Railway Tunnel features the rapid construction with self -developed complete sets of equipment for single -track tunnel and the excavation of soft surrounding rock section by adding an access tunnel. 天池隧道施工有两个特点,一是施工中运用了自行开发的铁路单线隧道配套设备进行施工;
- According to the field investigation at Dayang coal mine, the paper describes behavior of ground pressure of longwall top coal caving face with soft surrounding rock and movement of overlying strata. 本文通过大雁二矿28%23层采面矿山压力的实测分析,论述了软岩矿井大采放比综放开采矿压显现特征和围岩活动规律。
- mechanism of layered fracture of surrounding rock 围岩分层断裂机制
- As the shallow depth and poor geological conditions, the surrounding rocks are always soft, fragmentized or intensively disintegrated rock mass with partial pressure. 在浅埋条件下,地层的条件也相对较差,一般为软岩、破碎岩体或高风化岩体且带有一定的偏压。