長壁開采 的英文怎麼說
中文拼音 [zhǎngbìkāicǎi]
長壁開采
英文
all over work-
Mining of no beforehand to dig the roadway of the dip long - wall megaton ' s double - unit faces
無預掘巷道傾斜長壁對拉百萬噸工作面的開采Alignment grows wall to put coal back work face to adopt regional security to mine of study
走向長壁放頂煤回採工作面仰采區域安全開採的探討The conventional methods for mining such seams including the longwall blasting and block caving suffer form the drawbacks of being low in recovery, high in labor intensity and low in efficiency. after shifting to the use of the fully - mechanized extraction system by the zhaogezhuang branch mining industry co. of kailuan ( group ) co., the mining of the pitching seams has met with remarkbable social and economic result
針對大傾角煤層長壁炮采、落垛等採煤方法,存在回採率較低、員工勞動強度大、高產高效受限及安全等諸多問題,開灤(集團)趙各莊礦業分公司在探討大傾角煤層採煤工藝的改革及實踐大傾角煤層綜合機械化採煤過程中,取得了較好的社會經濟效益。Analysis and technological measures for longwall topple mining process at the big inclined angle seam
大傾角煤層傾斜長壁仰斜開采工藝分析及技術措施Study on roof control in shallow seam longwall mining
淺埋煤層長壁開采頂板控制研究In accordance with the occurrence behavior of roof strata and the fracture characteristics of key stratum in shallow seam longwall mining, studied post - buckling behavior of roof key stratum in the process of mining by using initial post - buckling theory, which derived a critical load and a breaking span of the main roof during the first weighting, determined the final subsidence and the maximum rotation angle for broken key stratum, and presented an application with the example of daliuta 1203 face
摘要根據淺埋煤層頂板巖層的賦存特點和長壁開采時關鍵層的變形破斷特徵,應用初始后屈曲理論探討了開采過程中頂板關鍵層的后屈曲性態,得出了老頂初次來壓時頂板的臨界載荷和破斷步距,確定了頂板破斷后的極限下沉量和回轉角,並以神東礦區大柳塔1203工作面為例給出了工程實例。Discussion on the application of 3. 5 m single hydraulic prop mining all height at one times in slope long wall mining
單體液壓支柱一次采全高在傾斜長壁開采中的應用Working resistance and safety margin of long - wall support in shallow coal bed
淺埋煤層長壁開采支架阻力及安全界限The results indicate that the stability for bifurcation point equilibrium configuration and post - buckling equilibrium path of roof strata can be revealed and an effective method for determining displacement field of imperfection structure can be provided by using initial post - buckling theory
應用初始后屈曲理論可揭示淺埋煤層長壁開采頂板巖層的分叉點平衡構形及后屈曲平衡路徑的穩定性,是確定非完善結構位移場的一種有效方法。Ground pressure behavior of hard roof mining face
復合型堅硬頂板高檔普采長壁工作面開采實踐Based on the in - situ observation of the firstly mined working face of nanliang coal mine, the roof movement, the roof weighting intensity, and entry deformation and failure of the working face were analyzed
摘要通過南梁煤礦首采工作面采前的實驗研究和開采時的現場觀測,分析了工作面頂板的移動、來壓強度以及巷道變形破壞情況,總結了厚黏土覆蓋層淺埋煤層單體長壁工作面的礦壓顯現規律。分享友人