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一般情况下,斜巷砌磷支护多从下往上进行,尤其斜巷倾角较大时更是如此。由川煤五处施工的洪县一号井的西一采区材料上山二次支护时是采用从上往下的下行式砌碹施工。该材料上山斜长250.130m,倾角21°,上、下水平标高分别为+645m和+556m,为生产期间西一采区材料运输枢纽。该巷1985年7月第一次永久支护为11A_5。矿工钢梯形支架,支架间距0.7m,1986年竣工后至1987年8月就已多次多处垮塌,严重影响生产和安全。为此,1987年10月,对该上山
Under normal circumstances, oblique laneway brick phosphorus support from the bottom up, especially when the inclination angle is even more so. Construction of five from the coal in Hong County No. 1 West District mining materials up the mountain when the secondary support is down from the construction of the downward puzzle. This material has an uphill slope of 250.130m and a dip angle of 21 °. The elevation levels above and below are + 645m and + 556m, respectively. It is the material transport hub for the first mining area during the production period. The lane in July 1985 the first permanent support for the 11A_5. Miner’s steel trapezoidal stent, stent spacing 0.7m, completed in 1986 until August 1987 has repeatedly collapsed in many places, seriously affecting the production and safety. To this end, in October 1987, the uphill