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A Supporting Method of Repeatedly Applied Prestressed Anchor Cables

A technology of prestressing and anchoring cables, which is used in earth-moving drilling, installation of bolts, mining equipment, etc., can solve the problems of disturbed surrounding rock support, loosening of grouting fluid and anchor cables, and unsatisfactory effects of anchoring and supporting structures. and other problems, to achieve the effect of simple structure, preventing loosening or failure

Inactive Publication Date: 2017-09-15
HAIYAN XINGCHEN HANDTOOLS
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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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  • A Supporting Method of Repeatedly Applied Prestressed Anchor Cables
  • A Supporting Method of Repeatedly Applied Prestressed Anchor Cables
  • A Supporting Method of Repeatedly Applied Prestressed Anchor Cables

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 a supporting method for an anchor rope capable of applying prestress repeatedly. The supporting method is characterized in that a T-shaped press pipe is further arranged at the outer end of an anchor rope drill hole, a supporting plate abuts against a wing plate of the T-shaped press pipe in a pressing mode, an anchoring end anchoring device is arranged at the part, close the inner end of the drill hole, of an anchor rope body, a casing pipe is arranged at the part, spaced from the upper portion of the anchoring end anchoring device by a certain distance, of the anchor rope body, an annular space is formed between the casing pipe and the anchor rope body, a flexible slurry stop plug is arranged at the end, close to the anchoring end anchoring device, of the casing pipe, the end, located in the drill hole, of the T-shaped press pipe abuts against the casting pipe in a sealing mode after the anchor rope is installed, and the anchoring end anchoring device can provide enough anchoring force so that the anchor rope can apply prestress repeatedly. The supporting method mainly comprises the steps of anchor rope manufacturing and installing, primary grouting, secondary grouting, and repeated prestress applying. By means of the supporting method for the anchor rope capable of applying prestress repeatedly, a full-length grouting curing structure is not disturbed, and the anchoring end with enough strength is available to apply prestress repeatedly.

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 HAIYAN XINGCHEN HANDTOOLS
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