夹矸 meaning in English
balk
bauk
baulk
dirt parting
drug
stone band
Examples
- Sub - level caving mining with seam of thickness dirt band
含厚夹矸煤层的综放开采 - Analysis of longwall top coal caving in thick seams with parting band
含夹矸厚煤层综放开采技术分析 - Practice of comprehensive mining precedure in waste - sandiwich seam working face
含夹矸薄煤层工作面综采工艺实践 - Studies on blasting parameter of thin coal seam contained fe2s nodules high production amp; amp; high efficiency mining face
含硬夹矸薄煤层高产高效工作面爆破参数的研究 - It was found that comparing with the case without dirt band the periodic weighting distance , median roof moving coefficient and support resistance all increased to different extent because of the influence of dirt band
发现由于夹矸的影响，与不含夹矸层工作面相比，其周期来压步距、平均动压系数和支护阻力都有不同程度的增大。