Process method and equipment for heading and anchoring parallel operation construction

Abstract

The invention discloses process method and equipment for heading and anchoring parallel operation construction. According to the process, a heading face is divided into a heading machine operation area and an anchoring support area, wherein the heading machine operation area ranges from a heading head to a heading machine tail, a heading machine post-anchoring operation range serves as the anchoring support area, the heading machine operation area and the anchoring support area are collectively called as a temporary support area, temporary support is carried out in the temporary support area by adopting folding telescopic laneway hydraulic support frames, and heading machine cutting and permanent support are parallelly operated; when the heading machine cutting and anchoring support are completed for one step pitch, the hydraulic support frames positioned on the tail ends of the temporary support area are withdrawn and carried to the heading head through an auxiliary support frame lifting and carrying device, and the hydraulic support frames are lifted to complete the temporary support so as to be subjected to heading and anchoring parallel operation in a next cycle. The heading and anchoring parallel operation construction comprises a heading machine, a plurality of laneway hydraulic support frames, the auxiliary support frame lifting and carrying device, an anchoring support operation platform, a machine back transportation system and a machine tracking ventilating dustproof facility.

Description

technical field [0001] The invention relates to a technology and 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 blasting excavation technology. How to realize safe and efficient excavation, 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 roadheader cutting and permanent support. [0003] Temporary support is designed to prevent the surrounding rock from falling and collapsing and hurting people after excavation of the roadway, and to ensure th...

AI Technical Summary

Problems solved by technology

[0012] 1. The traditional temporary support requires manual laying and top-connecting of roofing materials when running forward, which is labor-intensive and unsafe to work under an empty roof. It has almost no support for the roof and can only play a limited role in protecting the workers. , it often appears that the on-site operators try to save trouble, are afraid of trouble, and do not use it

[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

Since the birth of the first-generation bolter in the 1960s, two changes have been made. The third generation of bolt-digging is integrated. Although the parallel operation of bolt-digging has been realized, the empty head distance of the bolt is large, generally more than 1.2-1.5 meters. , the support cannot keep up with the head, so it is only suitable for large-section rectangular or trapezoidal roadways with small mining depth, small mine pressure and good surrounding rock conditions. Therefore, it has not been widely promoted and applied.

For example, most of the mining areas in my country and Germany, Poland and other countries have deep mining depth, high mine pressure, soft and broken surrounding rocks, dense anchor rods, and even need hanging nets and anchor cables for support, and the support workload is heavy. Not only the empty top distance cannot meet the requirements, the support time is much longer than the cutting time, and it is difficult to synchronize with the cutting

[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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