您要查找的是不是：
- The paper regards the main roof strata in uphill and downhill mining of an inclined longwall as a elastic plate. 本文将倾斜长壁仰斜、俯斜开采的老顶岩层视为倾斜弹性板。当板的长短跨度之比＞2时，板的荷载主要由短跨边来承担。
- main roof strata 老顶岩层
- A detection method of roof strata structure is put forward and the application of the method in Guhanshan coal mine in Jiaozuo is introduced. 提出了一种顶板岩层结构探测方式,介绍了该探测方式在焦作古汉山煤矿应用的情况。
- The caving of thick and strong roof stratum,key stratum,causes tremendous rock pressure in mine. 采场上覆岩层中的厚硬岩层,即厚硬关键层,其冒落会造成剧烈的矿山压力显现。
- For the unloading effect, the arching mechanism in the roof strata is weakened, and the probability of catastrophic collapse exists in roof strata above the milling zone. 由于边坡的卸荷作用，导致采场上覆岩层成拱机制减弱，采空区覆岩存在整体垮冒的可能性。
- Moreover, in the weighting process of the main roof, the characteristics of ground pressure manifestation are all of "camelback" form. 在来压过程中,回采工作面的矿压显现特征量均呈“驼峰”型。
- Therefore, the location of terminal line of the coalface should be put at the place where main roof periodic weighting process has already done. 因此，工作面终采线的位置，应尽可能确定在老顶岩层周期来压完成之后。
- The length of the first coalface in a mining-district controls the distances of first weighting and periodic weighting of the main roof. 在采区范围内首采工作面的长度控制着老顶的初次来压步距和周期来压步距。
- Investigation into the law of movement of roof stratum at the face,when a shortwalling system to the dip or along the strike of applied,is made with finite element and me- chanical methods. 本文通过分析水采和旱采顶板运动的特点 ,采用有限元及力学的方法研究了水采工作面沿倾向与走向的顶板运动规律。
- Huang Q X, Qian M G, Shi P W.Structural analysis of main roof stability during periodic weighting in longwall face[J].Journal of China Coal Society, 1999,24(6): 581-585. [6]黄庆享;钱鸣高;石平五.;浅埋煤层采场老顶周期来压的结构分析[J]
- The researches show that the main roof initial fracture process,when incline longwall being employed,has three types,and the calculation formula is given,wa also analyzed th... 同时分析了煤层倾角和顶板条件对老顶断裂和矿压显现的影响。
- The position and state of the main roof above the terminal line of the coalface nearby the rises affect the magnitude of the peak abutment pressure and the difficult extent of the rise maintenance. 上山附近终采线上方老顶岩层的位态影响着煤柱支承压力的大小和上山维护的难易程度。因此,工作面终采线的位置,应尽可能确定在老顶岩层周期来压完成之后。
- Observation of the movement and the stability of roof strata 采场顶板岩层运动及稳定性的观测研究
- Survey and determination on roof strata structure in seam gateway 煤巷顶板岩层结构的探测与确定
- Study of roof strata movement in coal mining face under steep angle 大倾角煤层采面顶板岩层运动研究
- Study on the Broking Mechanism of Roof Stratum of Coal Seam 煤层顶板破断机理研究
- The main impediment to growth is a lack of capital. 影响发展的主要障碍是缺乏资本。
- Keywords strata behaviors;the voussoir beam jointed later;big-small structure model;strata observation;laboratory simulation;breaking of main roof; 矿压显现;后铰“砌体梁”结构;大小结构模型;矿压观测;实验室模拟;老顶板块破断;
- Crowds thronged the main square of the city. 城里的大广场上挤满了人群。
- The whole school (was) assembled in the main hall. 全校在大礼堂集合。
