CAJ | 학술논문

针对已有围岩松动圈理论和数值模拟技术在研究矩形断面巷道围岩松动区范围的不足，运用深基点多点位移和钻孔窥视相结合的方法，对澄合矿区王村、王斜、二矿及董家河4个矿井主要采区巷道围岩松动范围进行了现场实测，得到了不同岩性条件下围岩松动范围与巷道埋深、断面尺寸、围岩强度及考虑各影响因素的不同预测公式。结果表明：当矩形巷道断面尺寸一定时，顶板平均松动厚度与巷道埋深成正增长关系，与顶板围岩抗压强度成反增长关系；当矩形巷道埋深一定时，顶板平均松动厚度与巷道的跨高比成正增长关系，与顶板岩石的拉压强度比成反增长关系；当两帮岩性一定时，矩形巷道两帮平均松动范围与巷道埋深成正增长关系，而与巷道跨度成线性正比例增长关系。将所得围岩松动范围预测公式运用于王村矿井13503工作面运输平巷的现场支护试验，取得了良好的围岩控制效果。
침대이유위암송동권이론화수치모의기술재연구구형단면항도위암송동구범위적불족，운용심기점다점위이화찬공규시상결합적방법，대징합광구왕촌、왕사、이광급동가하4개광정주요채구항도위암송동범위진행료현장실측，득도료불동암성조건하위암송동범위여항도매심、단면척촌、위암강도급고필각영향인소적불동예측공식。결과표명：당구형항도단면척촌일정시，정판평균송동후도여항도매심성정증장관계，여정판위암항압강도성반증장관계；당구형항도매심일정시，정판평균송동후도여항도적과고비성정증장관계，여정판암석적랍압강도비성반증장관계；당량방암성일정시，구형항도량방평균송동범위여항도매심성정증장관계，이여항도과도성선성정비례증장관계。장소득위암송동범위예측공식운용우왕촌광정13503공작면운수평항적현장지호시험，취득료량호적위암공제효과。
For the inefficiency of the loose rock theory and numerical simulation in the study of loos-ened surrounding rock scope in the rectangular roadway, based on the data obtained from on-site meas-urement of loosened surrounding rock scope in the main roadways of Wangcun mine, Wangxie mine, Erkuang mine as well as Dongjiahe mine by means of multipoint displacement and drilling peeping, this paper established different prediction formulas of the loosened surrounding rock scope with roadway depth, section size, surrounding rock strength as well as various factors under different lithologies. The results show:1) when the section size of the rectangular roadway is constant, the average thickness of loosening in the roof has a positive growth with the roadway depth and anti-growth with compressive strength of the roof;2) when the depth of the rectangular roadway is constant, the average thickness of loosening in the roof has a positive growth with span-height ratio of the roadway and anti-growth with tension and compression strength ratio of the roof rock;3) when the lithology of the sides is constant, the average thickness of the loosening in the sides rock of the rectangular roadway has a positive growth with the depth and proportional positive growth with the span of the roadway. Field supporting test of the transport trough was conducted in the 13503 coal face in Wangcun mine according to the obtained prediction formula, which achieved good effect in controlling the surrounding rock.