1) thickness of soft coal
软煤厚度
1.
According to the principle of the “spherical shell destabilization” theory,the expansion energy of initial relased gas and the thickness of soft coal are defined as the test indexes to predict the dynamic phenomena when coal is uncovered in a cross cut.
根据“球壳失稳”假说的原理，确定了初始释放瓦斯膨胀能和软煤厚度作为石门揭煤条件下动力现象的预测指标，在４６次突出模拟试验过程中测定了不同动力现象对应的数据，用贝叶斯准则下的多组逐步判别分析法处理这些数据，建立了石门揭煤动力现象三分类预测的判别函数，并且其回判的准确性达到１００％。
2) soft thick seam
软厚煤层
1.
In order to solve the support difficulties of the mining gateway for the fully mechanized top coal caving mining face in soft thick seam of Zhenchengdi Mine,the numerical simulation was applied to the optimized study on the mining gateway support mode and the support parameters.
为解决镇城底矿软厚煤层综放开采工作面巷道支护难题,采用数值模拟对巷道支护方式与支护参数进行了优化研究,分析了工字钢、锚杆与锚索等不同支护形式对巷道围岩变形、应力分布及塑性区范围的影响,得出了采用锚网带与锚索支护软煤巷道的优化支护参数,并进行了现场试验,验证了所选择支护参数的可行性。
4) very soft coal seam
极软厚煤层
1.
Mechanism of the rib spalling and the controlling in the very soft coal seam;
极软厚煤层煤壁片帮与防治机理
6) coal seam thickness
煤层厚度
1.
Spectral moment method to inverse coal seam thickness by seismic data;
地震资料谱矩法反演煤层厚度
2.
Research on coal seam thickness detection by natural Gamma ray in shearer horizon control;
自然γ射线法在采煤机摇臂自动调高中检测煤层厚度的研究
3.
Application of wave impedance inversion in coal seam thickness prediction
波阻抗反演在煤层厚度预测中的尝试
补充资料：标准煤(见煤当量)
标准煤(见煤当量)
standard coal
、~‘~1人、4《1工兀飞coal)见煤当等
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条