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- Complex roof strata 复杂顶板
- 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。
- 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。
- The nonlinear buckling analysis of a large complex roof reticulated shell is made and a real-time assessment of structural stability is presented. 进行了大型屋顶网壳结构的非线性屈曲分析,提出了支撑钢牛腿失效后网壳结构稳定性的实时评估策略。
- The nonlinear buckling analysis of a large complex roof reticulated shell is made and a real time assessment of structural stability is presented. 进行了大型屋顶网壳结构的非线性屈曲分析,提出了支撑钢牛腿失效后网壳结构稳定性的实时评估策略。
- 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。
- The practices showed that the complex roof of C4 seam was effectively controlled.Therefore the roof control problem of the coal mining face under the complex roof conditions was solved. 实践应用表明,C4煤层复合顶板得到了有效的控制,解决了复合顶板条件下回采工作面的顶板控制问题。
- Applied research on all anchor support technology for full seam gateway with high strata pressure and complex roof 高地压复合顶煤巷全锚索支护技术应用研究
- STUDY ON THE CONTROLLING TECHNIQUE OF COMPLEX ROOF OF THE ROAD DRIVEN ALONG THE GOAF IN THE SOFT COAL STRATA 松软煤层复合顶板沿空巷道控制技术研究
- 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
- Roof control and practices on coal mining under complex roof 复合顶板下采煤的顶板控制与实践
- Study on the Broking Mechanism of Roof Stratum of Coal Seam 煤层顶板破断机理研究
- Broken and analysis on anchor in mine roadway complex roof 复合顶板巷道锚索的破断及其分析
- Mother and baby interact in a very complex way. 母亲与婴儿以非常复杂的方式相互影响。
- Upward mining to improve complex roof control of seam 采用上行开采改善煤层复合顶板的控制
- Some of them developed a great inferiority complex. 他们有些人养成了严重的自卑感。