An assembled frp high-water material mine composite pillar and its construction method
A high-water material and assembled technology, which is applied in pillars/brackets, mining equipment, earthwork drilling and mining, etc., can solve the problems of high early strength, large deformation capacity, buckling deformation structure, etc., and achieve simple operation and reduced stacking area , Improve the effect of longitudinal bearing capacity
Active Publication Date: 2021-09-07
XINJIANG UNIVERSITY
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Problems solved by technology
However, under high external loads and dynamic disturbances, CFST is prone to buckling deformation and then causes structural instability, and the concrete needs a certain curing time before it can really bear the load. This is different from the high bearing capacity of underground geotechnical engineering. The basic requirements such as large deformation capacity and high early strength do not match
In addition, the relatively high production cost, transportation cost and personnel cost of CFST pillars restrict its wide-scale promotion to a certain extent.
Method used
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[0041] Such as Figure 1-7 As shown, an assembled FRP high-water material mining composite pillar and its construction method include a mining face 1, a mining roadway 5 and a continuous working face 10 are respectively arranged on both sides of the mining working face 1, and two sides of the mining roadway 5 are provided. The liquid injection pump 4 and the double liquid injection pump 4 are provided with a high-pressure rubber hose 6, and one side of the double liquid injection pump 4 is a pre-installation area 3, and the pre-installation area 3 is provided with a combined column 7, and the pre-installation area 3 is far away from A bolt 2 is provided on one side of the double-fluid injection pump 4, a hydraulic support 9 is provided at the front end of the recovery working face 1, and the front end of the hydraulic support 9 is the goaf 8, and the top and bottom of the recovery roadway 5 are respectively provided with a roadway roof 11 and a The roadway bottom plate 12, the...
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The invention discloses an assembled FRP high-water material mine composite pillar and a construction method, comprising a prefabricated FRP pipe, a fastening device and an internal filling body. According to the actual height of the underground roadway, FRP pipes with different heights and thicknesses are prefabricated in advance, and multiple FRP pipes are connected by rigid semicircular fastening devices or rubber snap-in rectangular fastening devices or mining flame-retardant tapes, and then in The interior of the FRP pipe is filled with high-water materials or gangue to form an overall support structure. Beneficial effects of the present invention: the casting process implements a reciprocating operation mode, and the maximum adaptation to the height of the roadway is realized by erecting wooden boards at the connection positions of each FRP pipe. The support system integrates the dual advantages of FRP and high-water materials, The utility model has the advantages of fast resistance increasing speed, high system reliability, simple construction process and low production cost, and has good application prospects.
Description
technical field [0001] The invention relates to an underground geotechnical engineering support system, in particular to a new assembled FRP-high water material combined system, which is used in underground geotechnical engineering and mine tunnel support technology. The support system has the advantages of high structural reliability, convenient construction, effective construction time saving, etc., has good engineering application prospects, and belongs to the technical field of underground geotechnical engineering, especially mine underground engineering support. Background technique [0002] The stability of underground geotechnical engineering, especially mine underground geotechnical engineering support structure is not only related to the safety and stability of underground engineering, but also directly affects the relative stability of ground building structures. Relevant scientific research institutes at home and abroad have carried out a lot of research on underg...
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IPC IPC(8): E21D15/00E21D15/502E21D15/50
CPCE21D15/005E21D15/50E21D15/502
Inventor 赵红超
Owner XINJIANG UNIVERSITY