一、地质简介巴里锡矿围岩为中上泥盆纪灰岩,单向抗压强度为800～1600公斤/厘米~2,矿脉呈断层脉型、似层状充填交代型和细脉带型三种,走向北东,延长380米,延深140米,倾向北西,倾角10～25°,矿脉厚度0.5～12米不等。二、矿桂破坏型武巴里锡矿矿柱的破坏受矿脉的厚度、采场的跨度、矿柱的尺寸、矿岩的性质、回采的方法和矿柱的位置等因素的影响,出现下列几种不同的破坏形式。 I. Introduction to Geology The Surrounding Rock of Bari Tin Mine is a middle-upper Devonian limestone with a unidirectional compressive strength of 800 ~ 1600 kg / cm ~ 2. The veins are fault-veined, laminar-filled and metamorphic Three kinds, to the north east, extending 380 meters, 140 meters deep, northwest inclination, dip 10 ~ 25 °, the veins thickness of 0.5 to 12 meters. Second, the destruction of mineral witch pillars tin ore pillar damage by the thickness of the veins, the stope, the size of ore pillars, the nature of ore, mining methods and the location of pillars and other factors, the following few Different forms of destruction.