150312开切眼沿15号煤层底板掘进。设计采用锚杆支护。巷道宽7.0m，高2.8m，断面19.6m2。150312工作面煤层开口至100m范围，由于受断层影响，煤厚2.5-2.7m，100m-切眼煤层厚度达到5.3-5.5m，平均厚度5.2m，含一层夹矸，顶板为泥岩砂质泥岩，底板为泥岩，砂质泥岩。150312皮带顺槽沿15号煤层底板掘进。设计采用锚杆支护。巷道宽4.2m，高3.1m，断面13.02㎡。150312工作面煤层开口至100m范围，由于受断层影响，煤厚2.5-2.7m，100m-切眼煤层厚度达到5.3-5.5m，平均厚度5.2m，含一层夹矸，顶板为泥岩砂质泥岩，底板为泥岩，砂质泥岩。150311工作面开切眼设计巷道断面尺寸如下：巷道断面呈矩形，掘进宽7.5m，高3.0m，掘进断面积为22.5m2。1目录第一章概况..........................................................................................1第一节目的任务..............................................................................1第二节位置及交通..........................................................................4第三节自然地理..............................................................................6第四节周边矿井及小窑..................................................................7第五节地质勘查及矿井地质工作................................................10第二章矿井地质..................................................................................22第一节区域地质简况....................................................................22第二节矿井地质............................................................................23第三章煤层、煤质及有益矿产..........................................................29第一节煤层....................................................................................29第二节煤质....................................................................................36第三节有益矿产............................................................................49第四章水文地质..................................................................................51第一节区域水文地质....................................................................51第二节矿井水文地质....................................................................55第三节矿井充水因素分析及水害防治措施................................58第四节矿井涌水量预算................................................................66第五节供水水源............................................................................66第五章其它开采技术条件..................................................................68第一节煤层顶底板岩石工程地质特征........................................680第二节瓦斯................................................................................70第三节煤尘爆炸危险性................................................................74第四节煤的自燃倾向性................................................................76第五节地温、地压..........................................................................77第六章环境地质..................................................................................78第一节地震与矿井稳定性..............................................................78第二节地质灾害..............................................................................78第三节水文环境..............................................................................79第四节有害物质..............................................................................79第七章矿山开采.............................
