down to earth salt production

Research on underground mining techniques and damage prevention methods of gypsum mine;

石膏矿地下开采技术及灾害防治措施研究

Study on assessment methods of underground mining to surface buildings;

矿山地下开采对地表建筑物影响的评价方法研究

Analysis for stability of natural slope due to underground mining of the phosphorus ore in Liushan-gou mine;

柳山沟磷矿地下开采自然坡稳定性分析

A grey model GM(1,2) is modified as GM(1,2,M,N) based on analysis of possible time-lag effect and non-linear relation between ground subsidence and groundwater extraction.

通过分析地面沉降过程与地下水开采量之间可能存在的时滞性以及非线性关系,将原有的灰色GM(1,2)模型改进为灰色GM(1,2,M,N)模型。

The safety evaluation method of groundwater extraction is discussed in the view of attribute interval recognition theory.

从属性区间识别理论的角度,探讨了地下水开采安全评价方法。

Specification for non-ferrous metal work for underground of the foundation of geology

有色金属地下开采矿山基建地质规程

Study of the Influence on Underground Mining during Stacking the Gangue in Open Pit;

露天采空区排尾对地下开采影响的研究

The Study on The Forecast of Water Inflow during Turing Open Pit into Undergound Mining in ShiRengou Iron Mine;

石人沟铁矿露天转地下开采地下涌水预测研究

Terms relating to coal mining--Underground mining

GB/T15663.3-1995煤矿科技术语地下开采

The teaching practice for the course of "the underground exploit of solid mineral deposit";

“固体矿床地下开采”课程教学探讨

Study on the Stability of Wall Rock and Control Technology on Underground Mining

地下开采围岩稳定性及控制技术研究

Establishment of 3D Model & Exploitation Design for Transition from Open Pit to Underground in 701 Mine

701矿3DM构建与露天转地下开采设计

STUDY ON FRACTURE MECHANISM OF OVERLYING SUPER-THICK ROCK STRATUM IN UNDERGROUND MINING

地下开采上覆巨厚岩层断裂机制研究

Analysis of displacement and deformation due to underground mining in Baizhu phosphorite mine

白竹磷矿地下开采岩体移动变形分析

Surface mining is only used when the mineral deposit lies near the surface of the ground. For those buried deep in the ground, underground mining is used instead.

露天开采只是在矿床靠近地表时才使用。对深埋在地下的矿床，采用地下开采。

The harmfulness of high step burst body and the prevention of its taking place during the initial stage of changing underground into opencast mining

地下开采转露天开采初期高台阶爆裂体的危害与防治

Study on Fault's Influence to Goaf in Underground Mining Transferring from Open-Pit in Complex Situation

复杂条件下露天转地下开采断层对采空区影响研究

underground milling

地下放矿漏斗开采法

Study on Rules of Mining Damage Caused by Open-pit with Under-ground Mining;

露天地下联合开采采动损害规律研究

Programming on Prediction of Coal-mining-induced Subsidence under Simple Geological-mining Conditions;

简单地质—开采条件下的采煤沉陷预测程序设计

Research on Ground Displacement and Deformation from Fully-mechanized Top-coal Caving Mining

综采放顶煤开采条件下的地表沉陷规律研究

virgin tank oil

换算成地面条件下的未开采石油

Analysis of Risk Decision Making for Groundwater Exploitation within Jinci Spring Area, Shanxi Province

晋祠泉域地下水开采决策的风险分析