Feasibility Study on the Steel-Plastic Geogrid Instead of Wire Mesh for Bolt Mesh Supporting
Qingbiao Wang,
Dong Wang,
Yue Li,
Wenxia Liu,
Chenglin Tian,
Zhenyue Shi,
Keyong Wang,
Hongxu Song,
Zhongjing Hu,
Xu Zhang,
Xunmei Liang,
Fei Tang,
Xingquan Tang,
Zhengyin Liu,
Mingjing Zhang
Affiliations
Qingbiao Wang
College of Resources, Shandong University of Science and Technology, Tai’an 271019, China
Dong Wang
College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, China
Yue Li
College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, China
Wenxia Liu
Mountain Tai Composite Industry Research Institute, Tai’an 271019, China
Chenglin Tian
College of Resources, Shandong University of Science and Technology, Tai’an 271019, China
Zhenyue Shi
College of Safety and Environmental Engineering (College of Safety and Emergency Management), Shandong University of Science and Technology, Qingdao 266590, China
Keyong Wang
College of Resources, Shandong University of Science and Technology, Tai’an 271019, China
Hongxu Song
College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Zhongjing Hu
College of Safety and Environmental Engineering (College of Safety and Emergency Management), Shandong University of Science and Technology, Qingdao 266590, China
Xu Zhang
College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, China
Xunmei Liang
Shandong Road New Materials Co., Ltd., Tai’an 271019, China
Fei Tang
Shandong Luda Test Instrument Co., Ltd., Tai’an 271019, China
Xingquan Tang
Shandong Luda Test Instrument Co., Ltd., Tai’an 271019, China
Zhengyin Liu
Shandong Provincial Communications Planning and Design Institute Group Co., Ltd., Jinan 250031, China
Mingjing Zhang
Shandong Provincial Communications Planning and Design Institute Group Co., Ltd., Jinan 250031, China
Wire mesh is a common material for bolt mesh supporting structures, but its application in engineering has revealed many defects. At the same time, with the development of new materials for civil engineering, the new material mesh performance and cost show outstanding advantages over wire mesh. In this paper, the feasibility of replacing wire mesh with steel-plastic geogrid as an alternative material is carefully studied through indoor tests and field applications. The following conclusions were drawn from a comparative analysis with wire mesh, mainly in terms of mechanical properties, engineering characteristics, and construction techniques: (1) in terms of mesh wire strength, wire mesh is slightly better than steel-plastic geogrid, but in the case of similar tensile strength, the amount of steel used per unit length of steel geogrid bars is only 36.75% of that of steel-plastic geogrid, while the tensile strength of the high-strength steel wire attached to the steel-plastic geogrid belt is about 3.3 times that of steel bars; (2) in terms of junction peel strength, both values are similar, with the injection-moulded junction being 1154.56–1224.38 N and the welded junction of 4 mm mesh being 988.35 N; (3) in terms of the strength of the mesh, steel-plastic geogrid is better than wire mesh, and with the same mesh wire strength, the bearing capacity of steel-plastic geogrid is increased by about 63.17% and the contribution of the mesh wire bearing capacity is increased by 83.66%, with the damage mainly being in the form of wire breakage in the ribbon causing ribbon failure, leading to further damage to the mesh; (4) in terms of the engineering application of steel-plastic geogrid compared to wire mesh, the utilization rate of mesh increases by about 24.99%, the construction efficiency increases by about 14.10%, and the economic benefit increases by about 45.31%. In practical application, the steel-plastic geogrid has good adhesion with surrounding rock and strong corrosion resistance. According to the above research analysis, the steel-plastic geogrid is feasible to replace the wire mesh for bolt mesh supporting.
