陈四楼井田岩浆岩分布特征及其对矿床开采的影响

Distribution characteristics of magmatic rock in Chensilou Mine Fieldand its influence on deposit mining

研究了陈四楼井田岩浆岩分布特征,主要有岩浆岩发育时期及产状、岩浆岩分布特征、岩性特征等,得出矿井内岩浆一般顺煤层及软弱层侵入,产状多为岩床或岩墙;三_(2)^(2)煤层受岩浆岩侵入面积约占控制面积的1/10;岩浆岩的种类较多,代表性的有辉绿岩类、闪长岩类、煌斑岩类、细晶岩类及花岗岩类。分析了岩浆岩对矿床开采的影响,主要为对煤层、煤质的影响。研究表明,岩浆常沿煤层底板软弱部位或顺煤层侵入,使煤层遭受一定程度的破坏或变质为天然焦。

This paper studies the distribution characteristics of magmatic rocks in the Chensilou Mine Field, mainly including the development period and occurrence of magmatic rocks, the distribution characteristics of magmatic rocks, and lithology characteristics.It was concluded that the magma in the mine generally intrudes along the coal seams and weak layers, and the occurrences are mostly rock bed or rock wall;the area of Ⅲ_(2)^(2) coal seam affected by magmatic rock intrusion accounts for about one-tenth of the controlled area;there are many types of magmatic rocks, representative of diabase, diorite, lamprophyre, fine crystal rocks and granites.Analyzed the influence of magmatic rock on the mining of the deposit, mainly the influence on the coal seam and coal quality.Research showed that magma often invades along the weak part of the coal seam floor or along the coal seam, causing the coal seam to suffer a certain degree of damage or metamorphosis into natural coke.