关键词: 拉拔测试系统, 智能矿山, 锚杆, 现场拉拔, 锚固力, 质量评测

Abstract: The field evaluation of bolt anchoring force is the basis of bolt support effect evaluation,support parameter design and optimization.In order to solve the problems of low efficiency,difficult carrying,discontinuous data acquisition and complex connection in the current field test method and equipment of anchor bolt anchoring force,based on the independent research and development of anchor bolt intelligent pull-out test system,the fast connection technology of anchor bolt field detection is proposed,and the load displacement real-time acquisition software is developed to intelligently analyze and visualize the load and displacement data in the whole process of pull-out.The developed drawing system is applied to Xincheng Gold Mine to evaluate the field anchoring force of bolt.The test results show that the average anchoring force of the pipe joint bolt with a length of 2.4 m,a wall thickness of 2.5 mm and a diameter difference of 2 mm is 61.5 kN,and the displacement can be more than 150 mm.The end anchored resin anchor with a length of 2.2 m and a diameter of 22 mm has an anchoring force of 230 kN and a displacement of about 120 mm.The anchoring force of the 2.2 m long and 22 mm diameter shell expansion anchor rod can reach 94.5 kN and the displacement is 25 mm.The field application has verified that the bolt intelligent pull-out test system has the characteristics of convenience,efficiency and intelligent analysis,which is helpful to reduce the test cost of mine bolt,provide data support for the field quantitative evaluation of bolt anchoring force,and provide technical support for intelligent mine construction,scientific management and decision-making.