掘金基本知识（nuggets）.docVIP

掘金基本知识（nuggets） Basic knowledge of excavation The status and function of driving To dig and lift, dig in the first place, to dig and dig. Coal mining is the precondition of tunneling and the mining of coal mining. Ii. Basic concept of well lane From the ground to the downhole, the excavation works mainly include wellbore, roadway, and chamber three. 1, the wellbore According to the slope: vertical well, inclined well, adit. According to function: usually have main well (coal), auxiliary well (material, personnel transportation, etc.), wind well (ventilation), mixed well (coal, transportation, etc.) 2, roadway 1) slope: horizontal roadway (roadway, stone door, etc.), sloping roadway (uphill, downhill, etc.); Stone gate: a horizontal roadway that is perpendicular (or oblique) to the direction of the coal seam. 2) according to the coal rock: the rock lane (the strata in the section are 4/5 and above), coal roadway (the coal layer in the section is 4/5 and above) and semi-coal rock roadway 3) by the way of the roadway: opening the roadway, preparing the roadway, and returning the roadway 4), according to the action points: transport roadway (such as mining machine lane, belt up the hill, up the hill, etc.), ventilation roadway (such as face the wind lane, return air up the hill, etc.), drainage roadway (e.g., besides, water storage, etc.), other tunnel, etc. 3, chamber The mine mainly includes pump room, substation, winch room, explosive library, charging chamber, signal chamber, waiting room and shelter. 4. Section shape There are two main categories, such as rectangle, trapezoid, oblique trapezoid, etc., and curve shape (arch, round, horseshoe shape, elliptical shape, etc.). There are mainly arched, trapezoidal, rectangular (oblique rectangle), circle, and other horseshoe-shaped, oval, oblique trapezoid, etc. The main body of mine is arch, trapezoid and rectangle (oblique rectangle). The order of the shape of various sections is: The stability and pressure of the road