thin seam

基本解釋

Burn through is the main problem of longitudinal seam welding of ultra-thin tube with small diameter. Assembly of the joint and welding technology are the key to solve the problem.
小直徑超薄壁管縱縫焊接的主要問題是燒穿，解決這個問題的關(guān)鍵是嚴(yán)格控制焊接接頭的裝配質(zhì)量及焊接工藝。
This paper introduces the structure, principle, equipment set on mining face, mining technology of BSHK-2DM coal auger for thin seam, and its application situation in Xinwen Mining Group.
本文介紹了從烏克蘭引進(jìn)的BSHK 2DM型薄煤層用螺旋鉆采煤機(jī)的結(jié)構(gòu)、原理、工作面配套設(shè)備和開采工藝，以及該設(shè)備在新汶礦業(yè)集團(tuán)的使用情況，并對螺旋鉆采煤機(jī)在薄煤層的使用前景提出了幾點(diǎn)看法。
Therefore, the conventional staggered distance model of ultra-close thin coal seam group during combined mining is put forward; and the theoretical research and physical simulation are carried out.
因此提出極近距離薄煤層群聯(lián)合開采常規(guī)錯距開采模型，并進(jìn)行理論和物理模擬試驗(yàn)研究。