1) thin-thicrness-changed coal band
煤厚变薄带
2) coal seam thinning zone
煤层变薄带
1.
Based on the principle that thin coal-seam thickness is basically in linear relationship with its amplitude,this paper,by using 3D seismic data interpretation system,extracted coal seam reflection wave amplitude slice to analyse the colour diagram of planar amplitude generated and delimit the coal seam thinning zone.
本方法根据薄煤层厚度与其振幅基本呈线性关系的原理,利用三维地震资料解释系统提取煤层反射波振幅参数,对生成的彩色平面振幅图进行分析,进而圈定出煤层变薄带的范围。
3) thick coal zones
厚煤带
4) thinner coal seam
较薄厚煤层
1.
Based on in-situ observation about stress in inclined coal pillar for fully-mechanized top-coal caving face of thinner coal seam and the elastoplastic limit equilibrium theoryt,aking the thickness and angle of coal seam into account,the results and relations are analyzed systematically and completely;and the formula and the distribution laws of stress peak value are obtained.
在较薄厚煤层综放面倾向煤柱支承压力现场实测的基础上,应用弹塑性极限平衡理论,考虑煤层厚度及倾角的影响,分析得出综放面倾向煤柱支承压力峰值位置的计算式及分布规律。
5) relatively thinner thick coal seam
较薄厚煤层
1.
Practices and experiences on fully mechanized caving tech. in relatively thinner thick coal seam;
较薄厚煤层综放实践与认识
2.
The practices and experiences on mining by the light supported fully mechanized caving method and the technical problems encountered in mining in the relatively thinner thick coal seam(i.
介绍陶二煤矿较薄厚煤层 ( 3。
6) material thickness getting thinner
料厚变薄
