SU969903A1 - Method of strengthening rock area around working - Google Patents
Method of strengthening rock area around working Download PDFInfo
- Publication number
- SU969903A1 SU969903A1 SU813267529A SU3267529A SU969903A1 SU 969903 A1 SU969903 A1 SU 969903A1 SU 813267529 A SU813267529 A SU 813267529A SU 3267529 A SU3267529 A SU 3267529A SU 969903 A1 SU969903 A1 SU 969903A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- pipe
- area around
- holes
- strengthening
- rock area
- Prior art date
Links
- 239000011435 rock Substances 0.000 title description 12
- 238000005728 strengthening Methods 0.000 title description 5
- 241000566515 Nedra Species 0.000 claims 1
- 239000000243 solutions Substances 0.000 description 7
- 239000004568 cements Substances 0.000 description 5
- 239000010410 layers Substances 0.000 description 3
- 210000004080 Milk Anatomy 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 101710043253 KNTC1 Proteins 0.000 description 1
- 210000000214 Mouth Anatomy 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000004020 conductors Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 239000000686 essences Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005755 formation reactions Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injections Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquids Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixtures Substances 0.000 description 1
- 239000006072 pastes Substances 0.000 description 1
- 239000011148 porous materials Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003014 reinforcing Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substances Substances 0.000 description 1
- 239000011901 water Substances 0.000 description 1
Description
The invention relates to mining, and in particular to methods of strengthening the rock mass around the mine.
There is a known method of reinforcing rocks, which includes installing a perforated pipe filled with cement paste into the well and squeezing the latter into the hole of the hole by plugging a load-carrying steel rod 1 into the pipe.
However, this method is ineffective, since the strength of pinning is perforated; in the array it is small.
The closest in technical essence and the achieved result to the proposed is a method of strengthening the rock mass around the excavation, including drilling holes, inserting tubular anchors and fixing solution into them, injecting the middle holes into the cracks of the holes with simultaneous flaring of tubular anchors into them. explosive charge in the cavity of each anchor 2.
However, when securing roofing rocks, the known method requires the use of pumps for feeding fixing solution into the holes, as well as devices for sealing the hole mouths.
which leads to an increase in the cost of 1 strength rock mass.
The purpose of the invention is to reduce the cost of strengthening the roof of production.
This goal is achieved in that, according to the method, before inserting the anchor into the hole, the cavity of the anchor tube is filled with a fixing solution and closed on both sides
10 by plugs, and injection of the solution into the rock is carried out through perforations in the pipe of the anchor, which is created by pre-sticking the outer surface of the pipe throughout
15 its length with the Subsequent formation of holes in the pinned points during the blasting of an explosive charge.
The drawing shows the anchor with which the method is carried out
20 strengthening the rock mass around the excavation.
The anchor consists of a length of pipe 1 with tapered along the entire length of the outer surface of the recesses 2, covered with 25 plugs 3, through which the thread 4 of the detonating hole is passed; The cavity of the pipe 1 is filled with a fixing solution, such as cement milk; lump 5 with water / cement ratio
30 () l. Such a composition in a moving fluid is quite fluid and easily fills the pipe stretch without the use of special solution-type superchargers. Moreover, a mobile fluid penetrates better into thin cracks and pores of an array during a short-term explosion - 5th pulse.
Pipe punching is carried out in the mechanic mine using a cylinder-shaped template with holes in the walls. A pipe is fastened in the cylinder and a core is made through holes in the walls using a conical hammer. The recesses are arranged according to a different pattern, depending on the nature of the fracturing of the J5 ruling array. Thus, with a uniform, small-block fracture, the recesses are arranged in a checkerboard pattern. If there are clay layers in the rock, the recesses thicken at the place of “contact of the anchor with these layers. The perforated anchor can be used in the future as a conductor during the cementation of rocks. In order to accelerate the hardening of the liquid cement layer in the gap between the walls of the hole and the pipe, the pipe is covered with a solution of liquid glass before installation. .
Roof hardening technology at the work site includes simple and easy-to-use operations for pouring cement milk into a tubular billet, closing pipe 1 on both sides with stoppers 3,. through which the detonating shura 4 is passed, When detonating a detonating hole is blasting, holes 2 are formed in the holes pinned on the walls of the pipe 1 of the holes 2, which are stress concentrators. Through the formed holes the fixing solution is injected.
cuts into the cracks of the rock mass.
The proposed method is effective for use in various mining and chemical conditions and allows the hardening of rocks without excessive labor costs.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813267529A SU969903A1 (en) | 1981-04-01 | 1981-04-01 | Method of strengthening rock area around working |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813267529A SU969903A1 (en) | 1981-04-01 | 1981-04-01 | Method of strengthening rock area around working |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU969903A1 true SU969903A1 (en) | 1982-10-30 |
Family
ID=20950328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU813267529A SU969903A1 (en) | 1981-04-01 | 1981-04-01 | Method of strengthening rock area around working |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU969903A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505687A (en) * | 2011-12-13 | 2012-06-20 | 江苏建筑职业技术学院 | Pre-explosion drilling, grouting and anchoring integrated anchor rod and construction method thereof |
-
1981
- 1981-04-01 SU SU813267529A patent/SU969903A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505687A (en) * | 2011-12-13 | 2012-06-20 | 江苏建筑职业技术学院 | Pre-explosion drilling, grouting and anchoring integrated anchor rod and construction method thereof |
| CN102505687B (en) * | 2011-12-13 | 2014-08-06 | 江苏建筑职业技术学院 | Pre-explosion drilling, grouting and anchoring integrated anchor rod and construction method thereof |
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