CN107366542A - A kind of grouting method for having been equipped with pit shaft - Google Patents
A kind of grouting method for having been equipped with pit shaft Download PDFInfo
- Publication number
- CN107366542A CN107366542A CN201610314043.6A CN201610314043A CN107366542A CN 107366542 A CN107366542 A CN 107366542A CN 201610314043 A CN201610314043 A CN 201610314043A CN 107366542 A CN107366542 A CN 107366542A
- Authority
- CN
- China
- Prior art keywords
- grouting
- cage
- slurries
- pit shaft
- folding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 33
- 238000007569 slipcasting Methods 0.000 claims abstract description 26
- 239000011440 grout Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 230000009466 transformation Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 18
- 239000007788 liquid Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 239000004568 cement Substances 0.000 description 8
- 235000006408 oxalic acid Nutrition 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical class OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical class O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D7/00—Shaft equipment, e.g. timbering within the shaft
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides a kind of grouting method for having been equipped with pit shaft, including step are as follows：(1) transformation of slip casting platform；(2) selection of grouting sequence and injected hole；(3) configuration of injecting paste material and slurries；(4) selection of grouting pressure；It is characterized in that, it is necessary to which existing cage is transformed into slip casting platform, grouting pressure is controlled in below 5Mpa, using slurries bucket is put on cage, is first pumped into from surface grout injection place slurries in bucket, then slurries are injected the borehole wall with the grouting pump on cage.The present invention is simple to operate, easily implement, folding is connected on cage, job platform area can effectively be increased, but do not have to dismounting cage and reinstall hanging scaffold, after the slurries that surface grout injection pump exports are input in cage top slurry bucket, grouting pressure control can be made in below 5Mpa, the borehole wall can not be destroyed, it is ensured that pit shaft safety.
Description
Technical field
Grouting and sealing technique field of the present invention, and in particular to have been equipped with the grouting method of pit shaft.
Background technology
As coal mining gradually extends to deep, some pit mining depth already exceed 1000m, and most pitshafts cause pit shaft to be continuously increased by the number of plies in water-bearing layer, constantly threatened by water damage more than more than 400m, the increase of mine shaft depth.The pit shaft being particularly already equipped with, the borehole wall elapse that water yield is increasing over time, and the water having has corrosivity, has stronger corrosiveness to the equipment such as mounted buntons, cage, cable in pit shaft, and serious security threat is formed to mine.
Typically use hanging scaffold to carry out slip casting to borehole wall rear as slip casting platform during shaft building, play a part of support with backfilling, it is safe and efficient using hanging scaffold as slip casting platform, more typhoon hammers can be met while worked, perforating quality is high.
Stratum is aqueous constantly to be washed away to the borehole wall, corrodes, carrying out Water outburst treatment to the pit shaft being already equipped with but turns into technical barrier, because can not be by the cage dismounting and change in pit shaft into hanging scaffold, and various kinds of equipment in pit shaft and pipeline have strict size requirement and safety clearance, particularly the position of cage and width are restricted, even if standing at the top of cage, can not also perforating be carried out to any position in pit shaft, while the equipment that can be put is also seldom.
The content of the invention
To solve the above problems, the present invention proposes a kind of grouting method for having been equipped with pit shaft, comprise the following steps that：(1) transformation of slip casting platform needs the fixed equipment related to slip casting and various slip casting pipelines, it is necessary to cage is transformed into slip casting platform on platform；(2) selection of grouting sequence and injected hole；(3) configuration of injecting paste material and slurries；(4) selection of grouting pressure.
The specific method of the step (1) is：The transformation of cage includes installation folding on the outside of cage, weld angle steel and be flexibly connected in folding bottom, so that folding is packed up or is sprawled, guardrail is welded in folding, and is covered using belt, belt must be close to borehole wall arrangement, it must assure that simultaneously very close to each other between the borehole wall and folding, prevent Work tool from falling, after folding expansion, the area of whole platform is not less than the 75% of pit shaft area.
The selection of the grouting sequence and injected hole of the step (2), grouting sequence is totally using the method for first descending rear upstriker, point horizontal operation.Injected hole is arranged as plum blossom arrangement, and interlamellar spacing is 2.5 ~ 3.5m, and per collar aperture spacing 1m, slip casting hole depth includes 1.2 ~ 1.4m of short slip casting hole depth, 2.2 ~ 2.7m of long slip casting hole depth.
The inner injecting paste material of the step (3) includes：UF20 Lauxites, oxalic acid, high-early (strength) cement, waterglass.
The River Bank Stability includes slurries 1 and slurries 2, slurry configurations 1：Cement uses water with water：Cement=1:1 is configured to cement mortar（Solution A）, waterglass（Second liquid）, last solution A is 1 with second liquid ratio:0.5；River Bank Stability 2：Modified urea-formaldehyde resin chemical grout is by UF20 modified urea-formaldehyde resins（Solution A）And oxalic acid solution（Second liquid）Prepare, solution A is 1 with second liquid ratio：0.2~0.4. wherein second liquid is 1：3 or so oxalic acid and the aqueous solution.The slip casting of pit shaft table soil section using based on cement list slurries, water shutoff after the method wall supplemented by slurries 1.Rock section slip casting mainly carries out water shutoff after wall using the method based on slurries 1, supplemented by slurries 2.
The selection of step (4) grouting pressure, the pit shaft stress distribution having had been equipped with varies widely, to ensure sidewall safety, grouting pressure requires control in below 5Mpa, slurries bucket is put on cage, first it is pumped into from surface grout injection place slurries in bucket, then slurries is injected the borehole wall with the grouting pump on cage, can be so reduced and destroy the borehole wall because directly the injection borehole wall increases grouting pressure from ground.
The present invention has advantages below compared with prior art：It is simple to operate, easily implement；Folding is connected on cage, can effectively increase job platform area, does not have to dismounting cage but and reinstalls hanging scaffold, can safe putting equipment, long short-bore, which combines, carries out slip casting；After the slurries of surface grout injection pump output are input in cage top slurry bucket, grouting pressure can be made to control in below 5Mpa, the borehole wall can not be destroyed, it is ensured that pit shaft safety.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention.
Fig. 2 is the structure chart that slip casting platform is transformed into example.
Embodiment
Example is that certain ore deposit auxiliary shaft mortar depositing construction, auxiliary shaft are had been equipped with completing, including a pair of size cages, and according to Fig. 1, cage is transformed into slip casting workbench by step 1 first, and folding is mainly installed in the transformation of cage on the outside of cage.
As shown in Figure 2, the folding is made using 3mm steel plates, folding is hanged with 10mm steel wire rope to be moved on cage hoisting rope, weld angle bar in folding bottom, pack up and sprawl so as to folding, guardrail is welded in folding, and covered using belt, belt must be close to borehole wall arrangement, and belt must be higher by folding 200-300mm in addition.The improved area coverage of folding is 44.8 ㎡, accounts for the 79% of auxiliary shaft area, while must assure that very close to each other between the borehole wall and folding, prevents Work tool from falling.
Step 2 is to the ore deposit auxiliary shaft slip casting totally using the method for first descending rear upstriker, point horizontal operation；Injected hole is arranged as plum blossom arrangement, and interlamellar spacing 3.5m often encloses 25 holes, and slip casting hole depth is divided into：Short slip casting hole depth 1.4m, long slip casting hole depth 2.7m.
Determine that pulp material is as follows according to step 3：UF20 Lauxites, oxalic acid, high-early (strength) cement, waterglass, the River Bank Stability include slurries 1 and slurries 2.
Slurry configurations 1：Cement uses water with water：Cement=1:1 is configured to cement mortar（Solution A）, waterglass（Second liquid）, last solution A is 1 with second liquid ratio:0.5.
River Bank Stability 2：Modified urea-formaldehyde resin chemical grout is by UF20 modified urea-formaldehyde resins（Solution A）And oxalic acid solution（Second liquid）Prepare, solution A is 1 with second liquid ratio：0.3, wherein second liquid is 3：1 or so oxalic acid and the aqueous solution.
The pit shaft mainly has 5 water-bearing layer water outlets, and topsoil is Quaternary aquifer water outlet, and rock section has four water-bearing layer water outlets.The slip casting of auxiliary shaft table soil section carries out water shutoff after wall using the method based on cement list slurries, supplemented by slurries 1.Rock section slip casting mainly carries out water shutoff after wall using the method based on slurries 1, supplemented by slurries 2.
Selection of the step (4) to grouting pressure, the ore deposit auxiliary shaft be single layer well wall and in water-bearing layer rock section using for plain concrete supporting, more borehole wall joint part water drenching is serious in pit shaft, to ensure sidewall safety, using the storing slurries bucket on cage, first it is pumped into from surface grout injection place slurries in bucket, then slurries is injected the borehole wall with the grouting pump on cage, is controlled in rock section grouting pressure in 2Mpa.
Described above, the embodiment for the preferred version of the present invention, but the present invention is not limited to examples detailed above.
Claims (5)
1. a kind of grouting method for having been equipped with pit shaft, including step are as follows：(1) transformation of slip casting platform；(2) selection of grouting sequence and injected hole；(3) configuration of injecting paste material and slurries；(4) selection of grouting pressure；It is characterized in that, it is necessary to which existing cage is transformed into slip casting platform, grouting pressure is controlled in below 5Mpa.
2. a kind of grouting method for having been equipped with pit shaft according to claim 1, it is characterised in that the transformation of the step 1 slip casting platform, folding is connected on the outside of cage, folding bottom welding angle steel is simultaneously flexibly connected, so that folding is packed up or is sprawled.
A kind of 3. grouting method for having been equipped with pit shaft according to claim 1 or claim 2, it is characterized in that, guardrail is welded in folding, it must assure that simultaneously very close to each other between the borehole wall and the folding as workbench, prevent Work tool from falling, after folding expansion, the area of whole platform is not less than the 75% of pit shaft area.
4. a kind of grouting method for having been equipped with pit shaft according to claim 1, it is characterised in that the selection of the grouting sequence and injected hole of the step (2), grouting sequence is totally using the method for first descending rear upstriker, point horizontal operation.
A kind of 5. grouting method for having been equipped with pit shaft according to claim 1, it is characterized in that, the selection of step (4) grouting pressure, the pit shaft stress distribution having had been equipped with varies widely, to ensure sidewall safety, grouting pressure requires to control in below 5Mpa, using the storing slurries bucket on cage, first it is pumped into from surface grout injection place slurries in bucket, then slurries is injected the borehole wall with the grouting pump on cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610314043.6A CN107366542A (en) | 2016-05-13 | 2016-05-13 | A kind of grouting method for having been equipped with pit shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610314043.6A CN107366542A (en) | 2016-05-13 | 2016-05-13 | A kind of grouting method for having been equipped with pit shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107366542A true CN107366542A (en) | 2017-11-21 |
Family
ID=60304515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610314043.6A Pending CN107366542A (en) | 2016-05-13 | 2016-05-13 | A kind of grouting method for having been equipped with pit shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107366542A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709216A (en) * | 2020-12-22 | 2021-04-27 | 河北工程大学 | Cement grouting construction method applied to underground engineering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094658A (en) * | 2011-02-01 | 2011-06-15 | 北京交通大学 | Method for directed induction fracturing grouting in shallow tunnel |
| CN102852532A (en) * | 2012-10-09 | 2013-01-02 | 冀中能源股份有限公司东庞矿 | Grouting method for preventing rib walk caving |
| CN202832551U (en) * | 2012-08-23 | 2013-03-27 | 洛阳龙门煤业有限公司 | Vertical shaft pitshaft and shaft bottom water spraying prevention device |
| CN103046932A (en) * | 2012-12-22 | 2013-04-17 | 中冶集团武汉勘察研究院有限公司 | Pre-grouting and water plugging method for permeable layer in vertical shaft |
| CN103161478A (en) * | 2013-03-25 | 2013-06-19 | 中国矿业大学 | Impulse-type grouting method |
-
2016
- 2016-05-13 CN CN201610314043.6A patent/CN107366542A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094658A (en) * | 2011-02-01 | 2011-06-15 | 北京交通大学 | Method for directed induction fracturing grouting in shallow tunnel |
| CN202832551U (en) * | 2012-08-23 | 2013-03-27 | 洛阳龙门煤业有限公司 | Vertical shaft pitshaft and shaft bottom water spraying prevention device |
| CN102852532A (en) * | 2012-10-09 | 2013-01-02 | 冀中能源股份有限公司东庞矿 | Grouting method for preventing rib walk caving |
| CN103046932A (en) * | 2012-12-22 | 2013-04-17 | 中冶集团武汉勘察研究院有限公司 | Pre-grouting and water plugging method for permeable layer in vertical shaft |
| CN103161478A (en) * | 2013-03-25 | 2013-06-19 | 中国矿业大学 | Impulse-type grouting method |
Non-Patent Citations (3)
| Title |
|---|
| 李强等: "默勒二矿副井井筒渗水治理", 《青海科技》 * |
| 王祥河等: "生产矿井井筒注浆安全高效的实践与突破", 《山东煤炭科技》 * |
| 田道春: "井筒出水的注浆治理技术", 《山东煤炭科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709216A (en) * | 2020-12-22 | 2021-04-27 | 河北工程大学 | Cement grouting construction method applied to underground engineering |
| CN112709216B (en) * | 2020-12-22 | 2022-09-13 | 中铁十九局集团第二工程有限公司 | Cement grouting construction method applied to underground engineering |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20171121 |