Mine roadway spraying supporting device
A technology of support device and roadway, applied in tunnels, tunnel lining, installation of bolts, etc., can solve problems such as unsatisfactory effect and poor support stability, achieve good support effect, avoid loosening and slip, and form smooth regular effect
Inactive Publication Date: 2017-11-10
GUIZHOU UNIV
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Problems solved by technology
[0005] The object of the present invention is to provide a mine roadway spray support device to solve the problem of poor support stability and unsatisfactory effect when spraying support for mine roadways with relatively loose surrounding rocks proposed in the above background technology
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[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0018] see Figure 1-3 , the present invention provides a technical solution: a spray support device for mine roadway, comprising
[0019] Roadway 1, rock base 2, steel wire mesh 3, sprayed concrete 4, anchor rod 5, reinforcement 6, internal mesh 7, external mesh 8, connecting reinforcement 9 and steel frame 10;
[0020] The outer side of the rock base 2 is provided with a steel wire braided net 3, the steel wire braided net 3 includes an inner net 7, an oute...
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The invention discloses a mine roadway spraying supporting device which comprises an inner net body, an outer net body, connecting bars and a steel frame. A steel wire woven net is erected on the outer side of a rock base layer and comprises the inner net body, the outer net body and the connecting bars connected between the inner net body and the outer net body. Anchor rods penetrate through the steel wire woven net and are anchored to the rock base layer; tightening bars are arranged on the tops of the anchor rods and are bound on the steel wire woven net; and spraying concrete is sprayed between a roadway and the rock base layer. The steel frame is utilized to maintain the considerable supporting capacity; the spraying concrete completely covering the steel wire woven net is combined to form a structure similar to reinforced concrete, and the good supporting effect is achieved; and the tightening bars are arranged at the top ends of the anchor rods, the tension of the anchor rods is utilized to enable the steel wire woven net to be attached to the surface of the rock base layer, thus the combination property of the spraying concrete and rock base layer is better, and stress concentration is avoided.
Description
technical field [0001] The invention relates to the technical field of roadway support supporting structures, in particular to a mine roadway spray support device. Background technique [0002] Roadway shotcrete support is a kind of concrete support method with the same raw material as ordinary concrete but with special construction technology. Shotcrete is to mix cement, sand and stone according to a certain proportion, then send it into the concrete sprayer, press the dry mixture to the nozzle with compressed air, add water to the water ring of the nozzle, and spray it at high speed A support form and construction method that acts as a support to the surface of the surrounding rock of the roadway. In the mine shaft and roadway, the shotcrete support combined with the bolt support is used to replace the original stone masonry and concrete lining, and obvious results have been achieved. [0003] The designer of the present invention found that when spraying support is carr...
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IPC IPC(8): E21D11/10E21D21/00
CPCE21D11/107E21D21/008
Inventor 左宇军王浩曲闯何晨宏董启龙刘勤志
Owner GUIZHOU UNIV