Roadway surrounding rock geogrid construction method
A technology of geogrid and construction method, which is applied in earth-moving drilling, tunnel, tunnel lining and other directions, can solve the problems of unreasonable construction technology and other problems of construction difficulty, and achieve a shortened construction period, a large single-piece area, and a small number of lap joints. Effect
Inactive Publication Date: 2015-03-25
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology
[0003] In order to overcome the problems of waste materials and construction difficulty in the traditional "bolt + steel mesh" support and the unreasonable construction technology problems in the existing "bolt + geogrid" support, the present invention proposes a roadway surrounding rock Geogrid construction method, which can not only replace the metal mesh to achieve the support strength required for surrounding rock support, but also improve the existing geogrid construction method, making the "bolt + geogrid" support process more efficient It is standardized and improves the support process and effect of anchor net support
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[0034] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0035] combine figure 1 As shown, a roadway surrounding rock geogrid construction method,
[0036] Equipment includes: grid support steel frame, nylon cable ties, anchor rods, drilling equipment, geogrid, geogrid ribs and Luoyang shovel or drilling rig;
[0037] The grid supporting steel frame includes a first arc-shaped supporting steel frame and a second arc-shaped supporting steel frame;
[0038] The geogrid includes a first geogrid and a second geogrid, which are both sides of the geogrid formed at the top of the roadway along the axial direction of the roadway;
[0039] The roadway surrounding rock geogrid construction method using the above equipment includes the following steps:
[0040] Step 1: Arrangement of anchor holes
[0041] Use Luoyang shovel or drilling rig to design the hole depth, inclination angle and diameter of the bolt ...
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Abstract
The invention discloses a roadway surrounding rock geogrid construction method and belongs to the field of roadway surrounding rock supporting. The roadway surrounding rock geogrid construction method includes: firstly, performing anchor bolt hole position arrangement; secondly, preparing equipment and materials; thirdly, enabling geogrids to be in place and laying first geogrids; fourthly, mounting anchor bolts; fifthly, laying second geogrids; sixthly, overlapping the geogrids; finally, completing single anchor bolt-geogrid support technology prior to repeating the steps until the whole roadway surrounding rock anchor bolt-geogrid support technology is completed. The roadway surrounding rock geogrid construction method has the advantages that metal meshes can be substituted to achieve required supporting intensity of surrounding rock supporting, and existing geogrid construction methods are also improved, so that the 'anchor bolt plus geogrid' support technology is normalized more effectively, the problems of wastes, difficulty in construction and the like in traditional 'anchor bolt plus steel mesh reinforcement' supporting as well as the problem of the unreasonable construction technology in existing 'anchor bolt plus geogrid' supporting are solved, anchor mesh support progress is accelerated and supporting effect is improved.
Description
technical field [0001] The invention belongs to the field of roadway surrounding rock support, and in particular relates to a method for constructing a roadway surrounding rock geogrid. Background technique [0002] After the roadway is excavated, due to the influence of the surrounding rock's self-weight stress and ground stress, the internal stress of the surrounding rock will be redistributed with the action of the external stress. During this process, there will be uneven stress inside the surrounding rock of the roadway. Under adverse geological conditions such as faults and fracture zones, the unbalanced degree of surrounding rock stress will be greater. If the surrounding rock is not supported by anchor nets in time, it will cause unbalanced distribution of surrounding rock stress and lead to instability and destruction of surrounding rock. The surrounding rock support form adopted in traditional roadways is generally "bolt + steel mesh" support. Although this support...
Claims
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Login to View More IPC IPC(8): E21D11/00E21D20/00
CPCE21D11/00E21D20/00
Inventor 温小康王清标张聪施振跃胡忠经许垒吕荣山白云王天天张军贤
Owner SHANDONG UNIV OF SCI & TECH