Novel capsule concrete anchoring and shotcreting lane side supporting method
A concrete anchor and concrete technology, which is used in earth-moving drilling, bolt installation, wellbore lining, etc., can solve the problems of lag in crack repair and inability to eliminate hidden dangers in the first time, and achieves increased adsorption force, improved response sensitivity and puncture Effectiveness, the effect of suppressing crack growth
Inactive Publication Date: 2018-08-24
BINZHOU UNIV
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Problems solved by technology
[0003] In order to solve the above-mentioned problems and make up for the deficiencies of the traditional technology, the present invention provides a new type of capsule concrete anchor shotcrete roadside support method, which is applied in the repair of mine roadside. This method can solve the problem that the crack repair lags behind the crack development. The problem of hidden dangers cannot be eliminated immediately, and the filling and curing effect is good, which improves the compressive strength of the side of the road
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[0015] The drawings show a specific embodiment of the invention.
[0016] The novel capsule concrete bolting and shotcreting roadside support method of the present invention includes mixing the capsule body with the concrete crack repairing agent, the catalyst and the concrete matrix material to form the capsule concrete, spraying it on the roadside surface, and then passing the bolt and the steel mesh Carry out roadside reinforcement and stability. When a crack occurs on the roadside sidewall, the capsule body is bent under force, and the capsule wall ruptures under the action of the tip of the puncture needle. The repair agent flows out and penetrates into the crack through solid-liquid coupling. The repairing agent reacts with the catalyst dispersed in the concrete, and the repairing agent solidifies to prevent the crack from continuing to grow;
[0017] The concrete crack repair agent contained in the capsule body contains the following components by weight: 10-20 parts by weig...
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The invention belongs to the technical field of mine mining construction, and particularly relates to a novel capsule concrete anchoring and shotcreting lane side supporting method. The method comprises the steps that capsules containing concrete crack repair agents, catalysts and concrete matrix materials are mixed to form capsule concrete and the capsule concrete is sprayed on the surface of a lane side, and the lane side is subjected to stabilization by strengthening through anchor rods and a reinforcing mesh. The novel capsule concrete anchoring and shotcreting lane side supporting methodhas the beneficial effects that the problem that fracture repair lags behind fracture development and cannot eliminate hidden danger in the first time is solved, and through the effect of capsule repair, the compressive strength of the lane side can be improved and the maintenance cost is reduced.
Description
Technical field [0001] The invention belongs to the technical field of mine mining and construction, and in particular relates to a new type of capsule concrete bolting and shotcreting roadside support method. Background technique [0002] Coal occupies an important role in social development. As the mining level continues to deepen, the role of mineral pressure becomes more complicated, and the development of roadside cracks increases, and the roadside is more likely to produce shear-slip damage and lead to fragmentation and roof fall. The existing mine roadside support mainly adopts the combined support of bolts and shotcrete. Anchor rods and sprayed concrete form a load-bearing structure together with the road side, which can effectively limit the deformation of the road side and prevent the road side from being fragmented. According to the different geological conditions of the roadside, different support methods can be adopted. For areas with low in-situ stress, generally ...
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IPC IPC(8): E21D11/10E21D20/02
CPCE21D11/10E21D20/02
Inventor 付明明吕菲菲房秀政
Owner BINZHOU UNIV