A kind of trolley and its construction method for concrete construction of multiple sections in mining method

Abstract

The invention discloses a trolley for concrete pouring construction on multiple sections by employing a mining method. The trolley comprises a frame, wherein the frame is connected with a template, and comprises a portal and a top arch rack, wherein the top arch rack is arranged above the portal; a top template is arranged above the top arch rack; lateral templates are arranged on two sides of the portal; a lateral cylinder is arranged between the lateral templates and the portal; two ends of the lateral cylinder are respectively hinged with the lateral templates and the portal. Firstly, the trolley can be applicable to different sizes of sections, can adjust the posture and the radian of the template in construction of changing sections, adapts to the dimensional requirements of different sections, and can achieve the beneficial effects of changing the sections without changing the trolley; secondly, the trolley adopts a separated alternative bay construction method; the trolley respectively enters a flow construction period from two sides of the tunnel, and then connecting, merging and assembling on the scene are achieved by separating the overall portal into two small portals when a transverse temporary arc is dismantled in primary support of the tunnel.

Description

technical field [0001] The invention relates to a formwork trolley applicable to the conversion of various sections in mining methods and a construction method thereof, especially suitable for concrete construction of various sections in mining methods with frequent conversion of large sections, high construction risks and difficulties, and tight construction schedules. Trolley and its construction method. Background technique [0002] The mine method is a kind of underground excavation method. It is called the mine method because it learns from the method of developing roadways in mines. When using the mining method for construction, the entire section is excavated to the design outline, and the lining is built accordingly. [0003] When the ground is soft, it can be carried out with simple excavation tools, and according to the stability of the surrounding rock, it should be supported while excavating when necessary. When excavating in sections, the pilot pit is first ex...

AI Technical Summary

Problems solved by technology

[0005] Existing trolleys only use a single standard formwork, which can only be adapted to specific tunnel end face dimensions and support types, and it is difficult to be directly used in mining method construction with frequent cross-section changes, long tunnels, and tight construction schedules. The above-mentioned formwork It is difficult for the support body to pass through the tunnel with variable cross-section, which seriously affects the construction period and poses a great safety hazard

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