Rapid roadway construction method for soft and broken surrounding rocks of deep coal mine and support system

A technology for crushing surrounding rocks and deep wells is applied in the field of fast construction methods and support systems for roadways with soft and broken surrounding rocks in deep wells of coal mines. The effect of simple breaking and erection process
CN103993891AInactive Publication Date: 2014-08-20HUAINAN MINING IND GRP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HUAINAN MINING IND GRP
Publication Date
2014-08-20
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a rapid roadway construction method for soft and broken surrounding rocks of a deep coal mine and a support system. The rapid roadway construction method for the soft and broken surrounding rocks of the deep coal mine includes the steps that a concrete leveling layer is sprayed to the roadway surrounding rocks in a wet mode; a plurality of grid arches are tightly attached to the concrete leveling layer at preset intervals; mounting anchor rods are arranged on the grid arches in a drilling mode; the grid arches are connected through longitudinal linkage ribs; a first layer of reinforcing mesh and a second layer of reinforcing mesh are laid along a roadway, wherein the first layer of reinforcing mesh is bound with the inner side main ribs, close to the surrounding rocks, of the grid arches, and the second layer of reinforcing mesh is bound with the outer side main ribs, away from the surrounding rocks, of the grid arches; concrete is sprayed again for filling of gaps among the grid arches, the two layers of reinforcing meshes and the surrounding rocks; a concrete layer is sprayed again to completely cover the grid arches; prestress grouting anchor cables are manufactured on the grid arches to support the surrounding rocks. By the method, the soft and broken surrounding rocks can be rapidly and effectively supported, and material waste and adverse impact on the environment are reduced to the maximum extent in the construction process.
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Description

technical field

[0001] The invention relates to the technical field of coal mine roadway support, in particular to a rapid construction method and a support system for a coal mine deep well weak and broken surrounding rock roadway. Background technique

[0002] During the excavation process of deep coal mine roadways, surrounding rocks under adverse geological conditions such as weak and broken are often encountered. From the perspective of surrounding rock level, this type of surrounding rock basically belongs to grade VI and V, and has the characteristics of fast deformation speed and long deformation time. Rapid construction technologies such as fast excavation, fast branching, and fast sealing are required to reduce Surrounding rock exposure time, to achieve the purpose of controlling deformation.

[0003] In prior art 1, on the basis of bolting and shotcreting support, steel arches are generally added and grouted to strengthen the support strength. However, the steel ...

Claims

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