考虑单轨吊悬吊效应的深部沿空巷道围岩变形特征  

Deformation Characteristics of Surrounding Rock of Deep Gob Side Roadway Considering Suspension Effect of Monorail Crane

作　　者：高川 刘小虎 周钢[2] GAO Chuan;LIU Xiaohu;ZHOU Gang(Yaoqiao Coal Mine,Datun Coal Power(Group)Co.,Ltd.,Xuzhou 221611,China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]大屯煤电(集团)有限责任公司姚桥煤矿,江苏徐州221611 [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：《煤炭技术》2024年第9期58-62,共5页Coal Technology

摘　　要：为分析单轨吊巷道围岩变形破坏特征,建立巷道单轨吊运输模型,进行相似材料模拟试验。试验结果表明:单轨吊荷载作用下,倾斜煤层巷道上覆岩层主要裂隙带分布于巷道一侧,具有明显的不对称性,并且主要裂隙发育集中在直接顶,说明直接顶岩层是单轨吊荷载的主要承载体;单轨吊巷道围岩相互作用体系可分为巷道断面围岩结构、单轨吊悬吊承载体和联接悬吊结构三部分,单轨吊荷载由各部分相互作用,并经传递和转化,由整个体系承担;对于沿空掘巷悬吊单轨吊支护设计,保持巷道断面围岩结构自身的稳定性是控制断面变形的基础,充分利用巷道上覆岩层大结构的稳定,是提高整个支护体系承载能力的关键。In order to analyze the deformation and failure characteristics of the surrounding rock of the monorail tunnel,the transportation model of the monorail tunnel is established and the similar material simulation test is carried out.The test results show that under the action of monorail load,the main fracture zone of the overlying strata of the inclined coal seam roadway is distributed on one side of the roadway,with obvious asymmetry,and the main fracture development is concentrated on the direct roof,which shows that the direct roof strata is the main bearing body of monorail load;the interaction system can be divided into three parts:tunnel section surrounding rock structure,monorail suspension carrier and connecting suspension structure.The monorail suspension load is borne by the whole system through the interaction of each part,transmission and transformation.For the supporting design of the suspension monorail suspension of the gob side entry,maintaining the stability of the tunnel section surrounding rock structure is the basis for controlling the deformation of the section,the key to improve the bearing capacity of the whole support system is to make full use of the stability of the large structure of the overlying strata of the roadway.

关 键 词：倾斜煤层 单轨吊 加卸载 变形破坏 沿空巷道 

分 类 号：TD32[矿业工程—矿井建设]