Longitudinal beam interlacing supporting type temporary supporting method for drifting face

Abstract

The invention discloses a longitudinal beam interlacing supporting type temporary supporting method for a drifting face. The method is achieved through temporary supporting supports. Each temporary supporting support comprises a four-column type front frame, a four-column type back frame, an advancing jack and a hydraulic system, wherein longitudinal beams of the front frame and the back frame of the temporary supporting support are mutually interlaced, and the longitudinal beams of the back frame can stretch into the longitudinal beams of the front frame when the back frame moves close to the front frame. According to the method, when temporary supporting of a drifting tunnel is performed, two or more sets of the temporary supporting supports are adopted for supporting, therefore, mutual interference can be achieved during top plate supporting, part of unsupported roofs can be mutually made up during frame moving, the action of telescopic forepoling bars is combined, therefore, the complete unsupported roof phenomenon cannot be generated among the temporary supporting supports, and the safety of construction personnel is guaranteed.

Description

technical field [0001] The invention relates to the technology of temporary support for roadway excavation working face. Background technique [0002] At present, the temporary support forms used in the underground excavation working face include "wearing hat point column" support, front probing beam support and temporary support bracket. The closest technique to the present invention is the use of temporary support brackets. Chinese patent 201420137745.8 discloses a top beam telescopic excavation work face temporary support bracket, which includes a four-column front frame and a four-column rear frame, and two moving jacks are arranged between the front frame and the rear frame. Under the action, the front frame and the rear frame can move closer or farther away from each other; the main structures of the front frame and the rear frame are composed of four telescopic hydraulic columns, two bases, two beams and several longitudinal beams; The telescopic front probe beam; i...

AI Technical Summary

Problems solved by technology

Since the longitudinal beams of the front frame and the rear frame are arranged on the same axis, the front frame and the rear frame cannot be completely close together, and they cannot be close to each other during the moving frame. The roof interferes with each other, and the frames cannot be moved very close to each other. There will be an empty roof phenomenon within a certain period of time, which is unsafe for the construction personnel; Small size, poor support effect, poor safety, etc., cannot effectively guarantee the safety of the excavation face, and cannot meet the needs of fast and safe construction of fully mechanized excavators, resulting in a relatively low average monthly footage and tense excavation.

Images