基于注浆加固圈厚度的富水巷道支护参数优化  

Optimization of support parameters of water rich roadway based on thickness of grouting reinforcement circle

作　　者：朱世奎 丁可 ZHU Shikui;DING Ke(Huaibei Mining Industry Group Company,Huaibei 235000,China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining&Technology,Xuzhou 221116,China)

机构地区：[1]淮北矿业股份有限公司,安徽淮北235000 [2]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221116

出　　处：《煤矿安全》2021年第7期193-199,206,共8页Safety in Coal Mines

摘　　要：为了解决富水巷道锚注支护参数的选择问题以及巷道注浆加固范围没有明确依据的问题,以桃园煤矿Ⅱ_(1)采区边界上山富水巷道为工程背景,采用理论分析、数值模拟和现场监测等方法,分析注浆加固圈厚度与注浆加固体承载能力的关系,提出了基于注浆加固圈厚度的富水巷道支护参数优化方法。研究表明:桃园煤矿Ⅱ_(1)采区边界上山富水巷道最小注浆加固圈厚度为1.5 m,基于注浆加固圈厚度确定的锚注支护方案可以有效地控制深部富水巷道变形,保障巷道的稳定及安全。In order to solve the problem of the selection of bolt grouting support parameters and the problem that there is no clear basis for the range of grouting reinforcement in the water rich roadway,this paper takes the water rich roadway in the mountain on the boundary ofⅡ_(1) mining area of Taoyuan Coal Mine as the engineering background.By means of theoretical analysis,numerical simulation and field monitoring,the relationship between the thickness of grouting reinforcement circle and the bearing capacity of grouting reinforcement is analyzed,and the optimization method of supporting parameters of water rich roadway based on the thickness of grouting reinforcement circle is proposed.The research shows that:the minimum thickness of grouting reinforcement circle is 1.5 m,and the bolt grouting support scheme based on the thickness of grouting reinforcement circle can effectively control the deformation of deep water rich roadway and ensure the stability and safety of roadway.

关 键 词：富水巷道 围岩变形 注浆加固圈 锚注支护 参数优化 

分 类 号：TD353[矿业工程—矿井建设]