Temporary support and permanent support parallel operation excavating technology and equipment for tracked hydraulic combined support

Abstract

The invention relates to a temporary support and permanent support parallel operation excavating technology and equipment for a tracked hydraulic combined support. In the technology, an excavating working plane is divided into a temporary support area and a permanent support area; an excavator operating area is the temporary support area and the permanent support area is arranged behind the temporary support area; the temporary support area is subjected to temporary support by adopting the tracked hydraulic combined support front supporting back returning technology; the operation of permanent support and the operation of excavator cutting are performed simultaneously. The technological equipment comprises a tracked front supporting back returning hydraulic combined support and support moving equipment. The technology and the equipment improve the excavating and supporting efficiency, and have wide application prospect.

Description

technical field [0001] The invention relates to a roadway support technology and supporting equipment for safe, efficient and rapid construction of underground engineering. Background technique [0002] The comprehensive mechanized excavation construction technology of underground engineering has been widely promoted and applied because of its safety and reliability, and its single-entry efficiency is much higher than the traditional blast excavation technology. The main time-consuming of one cycle of comprehensive mechanized tunneling construction technology is cutting by roadheader and roadway support. How to realize the parallel operation of roadheader cutting and roadway support, since the 1950s, domestic and foreign mining circles have carried out a lot of exploration, and produced a lot of technology and equipment. The main technical points involve two aspects, that is, the rapid implementation of safe and reliable temporary support and the parallel operation of roadh...

AI Technical Summary

Problems solved by technology

[0013] 2. The joist-type temporary support of the roadheader frame, the net laying operation is still under the empty roof, the support area cannot reach the full section, the strength of the frame and the connection strength with the roadheader are limited, and the support force is very small. Under temporary support and permanent support, the roadheader cannot work in parallel

[0015] 4. Front and rear push-pull or paired alternate stepping hydraulic self-moving support supports the roof repeatedly once in each cycle, which is easy to damage the roof and is not conducive to the support of the roof. When the condition of the roof is not good, it must be stopped for support, which cannot be realized Parallel operation of roadheader cutting and permanent support

This support method supports the head-to-head support of the roof through the entire length of the shield to the surrounding rock, shrinks, moves forward, and supports again. Repeated support is easy to damage the surrounding rock. It is only suitable for large bend radius and large sections. 1. Tunnel construction with better surrounding rock conditions is easy to get stuck when encountering faults and broken zones

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