sublevel caving method

Analyses factors that affect cover caving ability of roof coal in sublevel caving mining method.

分析了放顶煤开采顶煤冒放性的影响因素.

Study on a New Version of Sublevel Caving Method at a Gypsum Mine in China

无底柱分段崩落法新方案在石膏厚矿床的试验研究

Design of Combination of Smooth Blasting and Double-wedge Cut for Roadway Excavation sublevel undercut caving method

双楔形掏槽方法和光面爆破技术的综合设计分段下部掏槽崩落开采

For those mines adopting the sublevel caving method, the large structure parameters of the natural lay are not suitable for the ore drawing in transition sublevel process.

采用无底柱分段崩落法回采的矿山，在向大结构参数的转变过程中，正常布置的大结构参数不适用于过渡分段的放矿。

Study of Large Space Structure Parameters of Sill Pillar-Free Sublevel Caving Method and Practice

无底柱分段崩落法大间距结构参数的研究与实践

Review of Research on Ventilation Method of Entry for Sublevel Caving Method

无底柱分段崩落法进路通风方法研究综述

New technique of lateral sublevel caving method for the Large inclined thick seam

急倾斜厚煤层柔掩侧向放煤开采技术研究

The test and application of hole-bottom priming method in sublevel caving mining

孔底起爆法在无底柱分段崩落法中的试验与应用

A Theoretical Calculation Method of the Sublevel Caving Step-distance

综采放顶煤步距的一种理论确定方法

Big parameter and multi-subsection of sublevel caving method without sill pillow in the base of undiluted ore drawing

大参数多分段并行无贫化放矿的无底柱分段崩落法

App. of sublevel caving method with single hydraulic support

单体液压支架放顶煤开采方法的应用