不同裂缝倾角下三维应力对岩体裂缝张开度的影响分析  

Analysis on the Effects of Three- dimensional Stress under Different Fracture Dip on Rock Crack Opening Degree

作　　者：张永亮[1,2] 逄桦鹏 李涛 周少海 王凯讯 

机构地区：[1]青岛理工大学黄岛校区汽车学院,山东青岛266520 [2]山东黄金矿业(莱州)有限公司三山岛金矿,山东烟台265607 [3]山东黄金金创集团有限公司,山东烟台265600

出　　处：《工业安全与环保》2015年第8期4-6,38,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(51204100);中国博士后科学基金(2014T70658);中国博士后科学基金面上项目(2013M541934);山东省高等学校科技发展计划(J14LH03);山东省科技发展计划项目(2014GSF116020);青岛市科技计划项目(14-2-4-95-jch)

摘　　要：为了有效地开采利用矿山中的地热水,根据水力压裂的基本原理,提出水力压裂矿山热岩石的方法,通过增加裂缝数量和裂缝连通量来提高地热水的渗流率。对水力压裂产生的裂缝形态进行分析,推导出裂缝的导水系数,假设压裂得到椭圆型裂缝,研究三维应力变化在不同裂缝倾角下对裂缝张开度的影响,计算得出裂缝的张开度变化量,总结不同倾角下矿山深井岩体裂缝张开度变化量规律。For efficient exploitation of the ground hot water in the mines,according to the basic principles of hydraulic fracturing,a method of hydraulic fracturing hot rock of mining is put forward,to improve water seepage rate by increasing the number of cracks and the connectivity of crevices. The fracture morphology generated by hydraulic fracturing is analyzed and the crack hydraulic conductivity coefficient is deduced,assuming that the crack is elliptical by fracturing,to study the effects of the change of the three- dimensional stress under different fracture dip on the crack opening,calculate crack opening width variation and summarize the variation law of crack opening under different fracture dip in rock deep mining.

关 键 词：三维应力 裂缝倾角 裂缝张开度 岩体 

分 类 号：TD32[矿业工程—矿井建设]