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An Anchor Cable Supporting Method with Repeatedly Applied Prestress

An anchor cable support and prestressing technology, which is used in earth-moving drilling, bolt installation, mining equipment, etc. Structure and other problems, to prevent loosening or failure, the effect of simple structure

Active Publication Date: 2017-09-15
重庆智桥机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, my country's mines have entered deep mining, and the surrounding rock support is particularly important in the mining process. However, when implementing bolt and anchor cable support, in order to increase the support effect of the anchor rod and anchor cable, one end of the anchor cable is often grouted It is fixed in the deep part of the surrounding rock, and then the full-length prestress is applied, but in the prior art, when the prestress is applied, the end of the anchor cable rod is often required to be grouted for the first time, and then the prestress is applied for the first time, and then the full-length grouting is implemented again, and finally The supporting plate on the outer end is prestressed, which will disturb the surrounding rock support many times, and will loosen the solidified grouting fluid and the anchor rod, destroying the solidified structure of the grouting slurry, and the effect of the anchoring support structure is not good. not ideal

Method used

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  • An Anchor Cable Supporting Method with Repeatedly Applied Prestress
  • An Anchor Cable Supporting Method with Repeatedly Applied Prestress
  • An Anchor Cable Supporting Method with Repeatedly Applied Prestress

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Combining Figure 1-2 As shown, the anchor cable of the present invention is a prestressed anchor cable support method that can be repeatedly applied without disturbing the grouting body. The anchor cable includes: anchor cable body 1, anchoring end anchoring device, casing 6. Pressure pipe 7, supporting plate 8, lock 9, and grout stopper 10. The anchoring device at the anchoring end includes a first fixed block 2, a sliding block 3, a hook wing 5, a first support rod 4, and a first fixed block 2 Fixed on the inner end of the anchor cable body 1 deep into the borehole, the sliding block 3 is slidably arranged on the rod body of the anchor cable body 1 between the casing 6 and the first fixed block 2, and the casing 6 is arranged at a certain distance from the upper end of the sliding block 3 place, so that the sliding block 3 has enough sliding telescopic distance when the anchor cable goes deep into the borehole, so that the anchor cable goes deep into the b...

Embodiment 2

[0028] Example 2: Combining image 3 As shown, the anchoring device at the anchoring end in Embodiment 1 is further improved, and other parts are the same as Embodiment 1. In addition to the first fixed block 2, the sliding block 3, the hook wing 5, and the first support rod 4, the anchoring device at the anchoring end also includes a second fixed block 13 and a second support rod 12, and one end of the second support rod 12 is hingedly connected On the hinge point of the first support rod 4 and the hook wing 5 , the other end is hingedly connected to the second fixed block 13 . By adding the second support rod 12 and the second fixing block 13, the hook wing 5 can have enough supporting force to make the hook wing 5 lean against the hole wall. At the same time, when the anchoring end is grouted and anchored, the second support rod 12, The second fixing block 13 also provides stronger anchoring force integrated with the grout.

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Abstract

The invention discloses an anchor cable supporting method capable of exerting prestress repeatedly. The method is characterized in that a T-shaped pressing pipe is further arranged at the outer end of an anchor cable drilled hole, a supporting plate abuts against a wing plate of the T-shaped pressing pipe, and an anchoring end anchoring device is arranged on the portion, close to the inner end of the drilled hole, of an anchor cable body. A sleeve is arranged on the portion, a certain distance away from the upper portion of the anchoring end anchoring device, on the anchor cable body. An annular space is formed between the sleeve and the anchor cable body. A flexible grouting-stopping plug is arranged at the end, close to the anchoring end anchoring device, of the sleeve. After an anchor cable is installed, the end, located in the drilled hole, of the T-shaped pressing pipe abuts against the sleeve in a sealed mode. The anchoring end anchoring device can provide enough anchoring force so that the anchor cable can exert prestress repeatedly. The method mainly includes the steps of anchor cable manufacturing and installation, primary grouting, secondary grouting and repeated exertion of prestress. By means of the anchor cable supporting method, an overall-length grouting and solidification structure is not disturbed, and the anchoring end with enough strength can repeatedly exert prestress.

Description

[0001] This invention is a divisional application of the invention patent "An anchor cable support method with repeated application of prestress". The original application date is April 11, 2014, and the original application number is 2014101444334. The name is "an anchor cable support method with repeated prestressing". technical field [0002] The invention relates to the field of mine surrounding rock support, in particular to an anchor cable support method in which prestress is repeatedly applied to a mine roadway. Background technique [0003] Mine surrounding rock support is an extremely important and indispensable aspect in the field of underground resource mining. In recent years, coal mine mining accidents have occurred frequently, such as landslides and roof falls. These accidents are caused by inadequate technical measures and no effective measures have been taken. The technical measures or technical measures cannot be effectively implemented, and the surrounding ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D20/02
CPCE21D20/02
Inventor 施鑫镛
Owner 重庆智桥机械制造有限公司
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