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- Deep mine excavation 深部开采
- The characters of deep mine are larger raw rock pressure,larger ore body plasticize,mine pressure severe appearance. 深矿井的特征是原岩压力大、矿体塑性大及矿山压力显现剧烈。
- Deep mining first blighted the West Virginia landscape. 深挖矿井首先使弗吉尼亚州的风景遭到破坏。
- Underground test showed that this system can control large do formation of deep mine to keep stability of its surrounding cock. 井下试验表明，高预应力、强力锚杆支护系统能有效控制深部巷道强烈变形，保持围岩稳定。
- The extraction of coal from these deep mines is expensive. 从这些深矿中取得煤是很昂贵的。
- Dynamic progressive process of failure of overlying rock stratacaused by mining excavation is simulated by Strata Failure Process Analysis (SFPA2D) system. 应用岩层破断过程分析SFPA2D系统，分析了采动影响下覆岩破坏的动态发展过程。
- After entering deep mining in Fujia mine, the orebody becomed small, stope layer transition increased, and productive capacity decreased. 富家矿转入深部开采以后,矿体变小,采场转层次数频繁,生产能力降低。
- With mining capacity continuous increase and with mine entering into deep mining stage,the grade of crude ore and the grindability of ore decrease that raise the cost of grinding. 随着矿山规模的不断扩大和进入深部开采,矿石的原矿品位和相对可磨度逐渐降低,磨矿成本随之升高。
- The cast and working capacity of driving and supporting tunnel increase several times over in mining deep mine.The subterranean heat problem gradually appears in the deep mine. 在深矿井开采中,巷道的开掘和支护成本、工作量都要成倍地增加,并且在深矿井中地热问题也逐渐显现。
- Explained the problem of applied wind and water management in mine excavating process, proposed some improving measures put forward and remarkable economic benefits obtained. 分析了某铜矿采掘工序在用风用水管理上存在的问题,提出了相应的整改措施,通过分步实施,取得了明显的效益。
- Most of large and middle scale open-pit mines in China have reached deep mining. 摘要我国的大多数大中型露天矿山已经或即将进入深部开采。
- Effects of mining excavation on ground stability 采空区对地表稳定性的影响
- mining excavation for shallow overburdens 浅埋暗挖
- JIANG Yaodong, ZHAO Yixin, LIU Wengang, et al.Investigation on three-dimensional model of instability of translatory coal bumps in deep mining[J]. 刘文岗;姜耀东;周宏伟;等.;冲击倾向性煤体的细观特征与裂纹失稳的试验研究[J]
- mining excavation for shallow tunnels 浅埋暗挖法
- The influencing factors relating to chamber stability of deep mining stope were fully analyzed, and the factors were divided into 4 types. 摘要对影响深井采场凿岩硐室稳定性的因素进行了全面分析，并将影响因素分为4类。
- Rock-bursting is a special underground pressure behavior in deep mining in China currently and it intimidates seriously the safe mining. 冲击矿压是当前我国煤矿深部开采出现的一种特殊的矿山压力现象,它严重威胁井下安全生产。
- Probe into Prevention of Heat Hazard of Deep Mine 深井热害防治探讨
- Some plants push their roots deep into the soil. 一些植物的根深深长入土中。
- The medieval town was fortified with a high wall and a deep moat. 这座中世纪的城市周围建有城墙和护城河。
