Concrete steel pipe supporting frame device for roadway supporting, and supporting method thereof

Abstract

The invention discloses a concrete steel pipe supporting frame device for roadway supporting, and a supporting method thereof. The supporting method comprises the following steps that a, a protectingnet is uniformly fixed to the outer wall of a roadway through anchoring nails in an attached mode; b, the bottom of a left side arch frame is fixed to the bottom of the outer wall of the roadway through fastening bolts, the left end of a top arch frame and the left side arch frame are in inserted connection, and are connected and fixed through expansion bolts, and then a right side arch frame andthe right end of the top arch frame are fixed in an inserted connection mode; and c, a primary lining rack is fixed to a base through clamping grooves, and then supporting discs at the front ends of hydraulic jacks are jacked on the arch frames. According to the concrete steel pipe supporting frame device for roadway supporting, and the supporting method thereof, a traditional arch frame is disassembled and assembled in a spliced mode, and divided into the left side arch frame, the top arch frame and the right side arch frame, in this way, transport and storage are facilitated, assembling during supporting and later disassembling are facilitated due to arrangement of clamping heads and clamping holes; and the construction method is simple, a large quantity of manpower and material resources are saved, the integrity and stability of roadway supporting are ensured, and the safety of the roadway is ensured.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a concrete steel pipe support frame device and a support method for roadway support. Background technique [0002] After the excavation of the roadway, the stress state of the surrounding rock changed, the original stable balance was broken, the surrounding rock moved violently, the deformation of the roof, floor and the two sides was large, and the unstable area of ​​the surrounding rock appeared around the roadway; In the depth of the roadway, the compressive stress gradually transitions to the stress state of the original rock, and the stress concentration of the two sides of the roadway is the highest, and the passivation of the corner can effectively reduce the stress concentration. Large-section roadways generally focus on the control of the roof and two sides, and ignore the control of the floor. In fact, the bottom of the roadway is an important feature of the large-secti...

AI Technical Summary

Problems solved by technology

[0004] However, the current roadway support still has a series of deficiencies. For example, the support is very troublesome, the support effect is limited, the bottom is lack of support, the support is unstable, the arched steel plate connection is not stable, and there is a problem somewhere in the roadway. When the stress is concentrated, it is easy to cause weak areas in the roadway, resulting in unstable support, threatening the safety and stability of the support, and prone to roof caving and slabs

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