where η is conversion factor of working cross-section (η= 0.4 for formed working section up to 12-16 sq. m); k is expansion factor of muck (k=1.2-1.6); then, primary compensation hollow is expanded with radium where R is radius of formed working of round cross-section (R=H/2 for trapezoidal or rectangular working section, where H is working height, m); at the third stage, working is formed with final rated section by drilling and blasting with breakage of rock mass on formed compensation space. Invention provides for reduction of rock pressure on stability of mine workings and increase of efficiency of working driving under conditions of high stressed state of rock mass in mining of thin deposits of hard rocks by shearer. EFFECT: higher efficiency of method. 3 cl, 1 dwg"/>
METHOD OF DRIVING OF MINE WORKINGS IN MINING OF THIN DEPOSITS OF HARD ORES BY SHEARER UNDER CONDITIONS OF HIGH ROCK PRESSURE
FIELD: mining. SUBSTANCE: method includes drilling of compensation holes and breakage of rock onto them with final formation of mine working cross-section and distinguishes by the fact that working is formed in three stages: first, primary compensation hollow of working is formed by drilling of at least one pilot hole with radius where η is conversion factor of working cross-section (η= 0.4 for formed working section up to 12-16 sq. m); k is expansion factor of muck (k=1.2-1.6); then, primary compensation hollow is expanded with radium where R is radius of formed working of round cross-section (R=H/2 for trapezoidal or rectangular working section, where H is working height, m); at the third stage, working is formed with final rated section by drilling and blasting with breakage of rock mass on formed compensation space. Invention provides for reduction of rock pressure on stability of mine workings and increase of efficiency of working driving under conditions of high stressed state of rock mass in mining of thin deposits of hard rocks by shearer. EFFECT: higher efficiency of method. 3 cl, 1 dwg
展开▼
机译：领域：采矿。实质：该方法包括在最终形成矿山工作横截面的情况下钻出补偿孔并在其上破碎岩石，并通过以下三个事实来进行区分：第一，至少通过钻探形成主要的补偿空心一个半径为<图像文件=“ 00000004.GIF” he =“ 10” id =“ imag00000004” imgContent =“ undefined” imgFormat =“ GIF” wi =“ 30” />的导向孔，其中＆eta;是工作截面的转换因子（对于不超过12-16平方米的成型工作截面，η= 0.4）; k是渣土的膨胀系数（k = 1.2-1.6）;然后，用镭 file file =“ 00000005.GIF” he =“ 10” id =“ imag00000005” imgContent =“ undefined” imgFormat =“ GIF” wi =“ 30” />扩展主要补偿空心，其中R是半径圆形截面的成形加工（对于梯形或矩形加工截面，R = H / 2，其中H为加工高度，m）;在第三阶段，通过钻探和爆破而形成最终额定截面的工作，并在形成的补偿空间上破坏岩体。本发明提供了在采煤机开采硬岩薄沉积物的岩体处于高应力状态的条件下，降低了对矿山作业稳定性的岩石压力，并提高了作业驱动效率。效果：方法效率更高。 3厘升，1载重吨
展开▼
