CN103046932A - Pre-grouting and water plugging method for permeable layer in vertical shaft - Google Patents
Pre-grouting and water plugging method for permeable layer in vertical shaft Download PDFInfo
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- CN103046932A CN103046932A CN2012105616932A CN201210561693A CN103046932A CN 103046932 A CN103046932 A CN 103046932A CN 2012105616932 A CN2012105616932 A CN 2012105616932A CN 201210561693 A CN201210561693 A CN 201210561693A CN 103046932 A CN103046932 A CN 103046932A
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Abstract
A pre-grouting and water plugging method for a permeable layer in a vertical shaft includes the steps of reserving complete waterproof rock strata, performing spraying water treatment for a shaft body, building a water filtering layer, mounting a drainage sump and a waterproof layer, mounting and fixing a grouting guide pipe, pouring concrete grouting pad, performing water filtering layer grouting and performing grouting hole formation and laying the grouting guide pipe for grouting. The pre-grouting and water plugging method has the advantages that high grouting pressure meeting design requirements can be borne, grouting and water plugging effects under high water pressure and high grouting pressure during construction of the vertical shaft are guaranteed, the thickness of the grouting pad can be decreased to the greatest extent, and grouting pad construction and detachment workload is reduced, so that grouting effect is guaranteed, shaft body advancement speed is increased, and more obvious effect is achieved particularly as for a large-thickness permeable layer. Therefore, the pre-grouting and water plugging method can be effectively applied to pre-grouting and water plugging of the permeable layer in the vertical shaft and has good effect on experimental verification.
Description
Technical field
The present invention relates to the pre-grouting water technology method of a kind of vertical shaft inner water penetrating layer, particularly a kind of in vertical shaft the process of the pre-slip casting shutoff of deep pervious layer water burst, belong to the mine construction field of engineering technology.
Background technology
Often pass through pervious layer in the shaft sinking process, the water blockoff problem of pervious layer is the key of safety shaft driving, but under the condition of highland pressure, high hydraulic pressure, the crack that slurries evenly, effectively be injected pervious layer is very difficult.Generally need very high grouting pressure, therefore to guarantee that grout cover has enough ability to bears, permeable stratum occurrence and joint fissure etc. have been controlled grout distribution in addition, generally only be difficult to guarantee slip casting effect from grouting, and bad slip casting effect easily causes water leak accident, and mine development end is produced grave danger.Therefore vertical shaft inner water penetrating layer grouting for water blocking does not admit of a bit mishap, need a kind of safe and effective method, to guarantee good grouting for water blocking effect, reduce in addition the grouting for water blocking engineering to the impact of shaft excavation as far as possible, accelerate driving speed, reduce the shaft construction cost.
Summary of the invention
The invention provides a kind of process that can guarantee the pre-grouting for water blocking effect of vertical shaft inner water penetrating layer, the method is not only at slip casting pad Construction in Preparatory Stage, and reserving complete water proof rock stratum, building the drainage layer by laying bricks or stones, collecting well and waterproofing course, fluid concrete grout cover, the slip casting of drainage layer, injected hole pore-forming are installed and are being laid the slip casting guide pipe slip casting stage and take many-sided comprehensive technical measure, thereby effectively guarantee the grouting for water blocking effect, reduce concrete use amount and slip casting round trip, accelerate shaft excavation speed.
The present invention is a kind of for the pre-grouting water blocking method of vertical shaft inner water penetrating layer, and fixedly slip casting guide pipe, (6) are poured into a mould circular platform type concrete grout cover, the slip casting of (7) drainage layer, (8) injected hole pore-forming and laid the slip casting of slip casting guide pipe to comprise the steps: to build drainage layer, (4) installation collecting well and waterproofing course, (5) installation by laying bricks or stones in the complete water proof of (1) reservation rock stratum, the water treatment of (2) pit shaft pouring side, (3); Its bearing value that takes full advantage of water proof rock stratum and the borehole wall in the mortar depositing construction process is sealed pervious layer, reduces to greatest extent the thickness of grout cover, to bear the high grouting pressure of designing requirement; Adopt rig to creep into the major diameter injected hole in wellbore centre in addition, be deep into pervious layer, during slip casting slurries along the wellbore centre injected hole to around uniformly penetrating, under enough grouting pressure effects, once grouting can form larger water-stop curtain.
The complete water proof of reservation of the present invention rock stratum is to reserve the concrete shared grout cover effect that complete water proof rock stratum and later stage build before To Construction of Silo passes through pervious layer; Described pit shaft drenches the side water treatment and adopts grouting behind shaft or drift lining; The described drainage layer of building by laying bricks or stones refers to the broken spoil of work plane be pressed design thickness smooth good after the position of building grout cover is arrived in shaft excavation; Described installation collecting well and waterproofing course are the bottomless drainage wooden cases of space mounting of reserving certain volume in drainage layer middle and upper part, then lay successively from lower to upper at an upper portion thereof malthoid, casting cement mortar, build one deck brick; Described installation fixedly slip casting guide pipe is after with pumping equipment the collecting well internal water accumulation being drained, to remove suction water pipe, and install in wellbore centre, fixing slip casting guide pipe; Described fluid concrete grout cover refers to build circular platform type plain concrete grout cover; The slip casting of described drainage layer refers to after collecting well drains shaft bottom water, cement grout is injected the drainage layer along the slip casting guide pipe, make cement grout filling between drainage layer spoil hole closely knit, thereby grout cover, the borehole wall, drainage layer and reservation water proof rock stratum are closely poured into a mould, agree with into an integral body, jointly resist grouting pressure; Described injected hole pore-forming is also laid the slip casting of slip casting guide pipe, refer to adopt rig to be drilled to a major diameter injected hole in wellbore centre, hole depth requires to go deep into pervious layer, then adopts high grouting pressure to inject cement grout in pervious layer, around pit shaft, form water-stop curtain, with the shutoff pervious layer.
Advantage of the present invention is:
1, of the present invention for pre-grouting water blocking method in the vertical shaft, drainage layer shared circular platform type grout cover effect after reservation certain thickness water proof rock stratum and after-pouring concrete, the slip casting, and its borehole wall closely is cast in together, take full advantage of the bearing value of water proof rock stratum and the borehole wall, can not only bear the high grouting pressure of designing requirement, guarantee the effect of grouting for water blocking under high hydraulic pressure in the To Construction of Silo process, the high grouting pressure, and reduced to greatest extent the thickness of grout cover, reduce the grout cover construction and removed workload;
2, adopt rig to creep into the major diameter injected hole in wellbore centre, be deep in the pervious layer, in the time of guaranteeing slip casting slurries along the wellbore centre injected hole to around uniformly penetrating, under enough grouting pressure effects, once grouting can form larger water-stop curtain.Thereby guaranteed slip casting effect, improved shaft excavation speed, especially for passing large thickness pervious layer, effect is more obvious.
Therefore can effectively be applied to the pre-grouting for water blocking of vertical shaft inner water penetrating layer, verification experimental verification has very good effect.
Description of drawings
Fig. 1 is construction process figure of the present invention.
Fig. 2 is construction sequence 1 of the present invention, 2 schematic diagrames.
Fig. 3 is construction sequence 3 of the present invention, 4 schematic diagrames.
Fig. 4 is construction sequence 5 schematic diagrames of the present invention.
Fig. 5 is construction sequence 6 schematic diagrames of the present invention.
Fig. 6 is construction sequence 7 schematic diagrames of the present invention.
Fig. 7 is construction sequence 8 schematic diagrames of the present invention.
The specific embodiment
Of the present invention to the pre-grouting water blocking method of vertical shaft inner water penetrating layer, step is as follows:
The concrete operations content of described step (1) is: consult the geological mapping data, when shaft sinking before the permeable stratum, reserve at an upper portion thereof certain thickness complete water proof rock stratum.
The concrete operations content of described step (2) is: adopt the method shutoff pit shaft of Shaft Linings grouting behind shaft or drift lining to drench side water, if still have the part trickle after the borehole wall slip casting, need to install cutoff trench and intercept water, make to drench and help water not enter work plane, to guarantee concrete casting quality;
The concrete operations content of described step (3) is: after arriving the position of building grout cover when shaft excavation, the broken spoil of work plane is pressed design thickness smooth good;
The concrete operations content of described step (4) is: collecting well that specification is 0.6 * 0.6 * 0.6m of excavation in the middle of smooth good broken spoil, and in collecting well, install bottomless drainage wooden case, at the water filtering tank suction water pipe that connects suitable for reading.Then lay 2 ~ 3 layers of malthoid on drainage layer top, in the thick cement mortar of malthoid upper one deck 50 ~ 100mm, and build one deck brick in the above;
The concrete operations content of described step (5) is: after with pumping equipment the collecting well internal water accumulation being drained, remove suction water pipe, and install in wellbore centre, fixing slip casting guide pipe;
The concrete operations content of described step (6) is:
1. grout cover integer.Press circular platform type design explosion grout cover profile, and use the pneumatic pick shaping, make it to reach the shape and size of design code;
2. add strong supporting.Place in catalase.In time carry out temporary lining with shotcrete, individual prop, to protect appearance and size.
3. fluid concrete.Concrete grade C45, and add early strength admixture; Adopt concrete under the well-bucket, concrete must be poured on first anhydrous eminence, passes from high to low, is not diluted by water to protect concrete; During placing of concrete, grout cover must exceed borehole wall lower surface 1500mm, strict layering is made firm by ramming, particularly the periphery of grout cover in grout cover and borehole wall connection place, must add macroseism outside orifice tube, the suction water pipe and smash, filling is close, make grout cover and the filling of borehole wall joint portion closely knit, be integrated, take full advantage of the bearing value of the borehole wall.The continuous pouring concrete is to protect the grout cover quality.
The concrete operations content of described step (7) is: after collecting well drains shaft bottom water, cement grout is injected the drainage layer along the slip casting guide pipe, make cement grout filling between drainage layer spoil hole closely knit, extract the slip casting guide pipe after slip casting is finished.
The concrete operations content of described step (8) is: adopt rig to bore the major diameter injected hole in wellbore centre, require to be deep in the pervious layer, then lay the slip casting guide pipe, between the hole of guide pipe and grout cover, drainage layer, water proof rock stratum, inject cement grout, make pore filling airtight, then adopt high grouting pressure in pervious layer, to inject cement grout, around pit shaft, form water-stop curtain, with the shutoff pervious layer.
Claims (9)
1. one kind for the pre-grouting water blocking method of vertical shaft inner water penetrating layer, and it is characterized in that: its step comprises:
(1) reserves complete water proof rock stratum; The complete water proof of described reservation rock stratum is to reserve certain thickness complete water proof rock stratum before To Construction of Silo passes through pervious layer, the concrete shared grout cover effect of building with the later stage,
(2) pit shaft drenches the side water treatment; It is to adopt the grouting behind shaft or drift lining method that described pit shaft drenches the side water treatment, injects cement grout behind Shaft Linings, with shutoff borehole wall trickle,
(3) build the drainage layer by laying bricks or stones; Build the drainage layer by laying bricks or stones and refer to after the position of building grout cover is arrived in shaft excavation, the broken spoil of work plane be pressed design thickness smooth good,
(4) collecting well and waterproofing course are installed; Described installation collecting well and waterproofing course are the bottomless drainage wooden cases of space mounting of reserving certain volume in drainage layer middle and upper part, then lay successively from lower to upper at an upper portion thereof malthoid, casting cement mortar, build one deck brick,
(5) fixedly slip casting guide pipe is installed; Install fixedly that the slip casting guide pipe is after with pumping equipment the collecting well internal water accumulation being drained, to remove suction water pipe, and at wellbore centre installation, fixing slip casting guide pipe,
(6) fluid concrete grout cover; Described fluid concrete grout cover refers to build circular platform type plain concrete grout cover,
(7) slip casting of the described drainage layer of drainage layer slip casting refers to after collecting well drains shaft bottom water, cement grout is injected the drainage layer along the slip casting guide pipe, the drainage layer is built closely knit, thereby grout cover, the borehole wall, drainage layer and reservation water proof rock stratum are closely poured into a mould, agree with into an integral body, jointly resist high grouting pressure;
(8) injected hole pore-forming and lay the slip casting of slip casting guide pipe;
Described injected hole pore-forming is also laid the slip casting of slip casting guide pipe, refer to adopt rig to be drilled to a major diameter in wellbore centre, and can be deep into the slip casting pilot hole in the pervious layer, then adopt high grouting pressure in pervious layer, to inject cement grout, around pit shaft, form water-stop curtain, with the shutoff pervious layer.
2. according to claim 1 to the pre-grouting water blocking method of vertical shaft inner water penetrating layer, it is characterized in that: the concrete operations content of described step (1) is: consult the geological mapping data, when shaft sinking before the permeable stratum, reserve at an upper portion thereof certain thickness complete water proof rock stratum.
3. according to claim 1 to the pre-grouting water blocking method of vertical shaft inner water penetrating layer, it is characterized in that: the concrete operations content of described step (2) is: adopt the method shutoff pit shaft of Shaft Linings grouting behind shaft or drift lining to drench side water, if still have the part trickle after the borehole wall slip casting, need to install cutoff trench intercepts water, make to drench and help water not enter work plane, to guarantee concrete casting quality.
4. according to claim 1 to the pre-grouting water blocking method of vertical shaft inner water penetrating layer, it is characterized in that: the concrete operations content of described step (3) is: after arriving the position of building grout cover when shaft excavation, the broken spoil of work plane is pressed design thickness smooth good.
5. according to claim 1 to the pre-grouting water blocking method of vertical shaft inner water penetrating layer, it is characterized in that: the concrete operations content of described step (4) is: collecting well that specification is 0.6 * 0.6 * 0.6m of excavation in the middle of smooth good broken spoil, and in collecting well, install bottomless drainage wooden case, at the water filtering tank suction water pipe that connects suitable for reading, then lay 2 ~ 3 layers of malthoid on drainage layer top, in the thick cement mortar of malthoid upper one deck 50 ~ 100mm, and build one deck brick in the above.
6. according to claim 1 to the pre-grouting water blocking method of vertical shaft inner water penetrating layer, it is characterized in that: the concrete operations content of described step (5) is: after with pumping equipment the collecting well internal water accumulation being drained, remove suction water pipe, and install in wellbore centre, fixing slip casting guide pipe.
7. according to claim 1 to the pre-grouting water blocking method of vertical shaft inner water penetrating layer, it is characterized in that: the concrete operations content of described step (6) is: 1. grout cover integer, press circular platform type design explosion grout cover profile, and use the pneumatic pick shaping, make it to reach the shape and size of design code; 2. add strong supporting, in the place of catalase, in time carry out temporary lining with shotcrete, individual prop, to protect appearance and size; 3. fluid concrete, concrete grade C45, and add early strength admixture; Adopt pouring concrete under the well-bucket, concrete must be poured on first anhydrous eminence, passes from high to low, is not diluted by water to protect concrete; During placing of concrete, strict layering to make firm by ramming, the periphery of grout cover particularly, in grout cover and borehole wall connection place, outside orifice tube, the suction water pipe, must add macroseism and smash, filling is closely knit; The continuous pouring concrete, to protect the grout cover quality, wherein, grout cover must exceed borehole wall lower surface 1500mm, and strengthens vibrating in the junction of the two, makes grout cover and the filling of borehole wall joint portion closely knit, is integrated, and takes full advantage of the bearing value of the borehole wall.
8. according to claim 1 to the pre-grouting water blocking method of vertical shaft inner water penetrating layer, it is characterized in that: the concrete operations content of described step (7) is: after collecting well drains shaft bottom water, cement grout is injected the drainage layer along the slip casting guide pipe, make cement grout filling between drainage layer spoil hole closely knit, extract the slip casting guide pipe after slip casting is finished.
9. according to claim 1 to the pre-grouting water blocking method of vertical shaft inner water penetrating layer, it is characterized in that: the concrete operations content of described step (8) is: adopt rig to be drilled to major diameter in wellbore centre, to be deep into the slip casting pilot hole in the pervious layer, then lay the slip casting guide pipe, between the hole of guide pipe and grout cover, drainage layer, water proof rock stratum, inject cement grout, make pore filling airtight, adopt at last high grouting pressure in pervious layer, to inject cement grout, around pit shaft, form water-stop curtain, with the shutoff pervious layer.
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| CN2012105616932A CN103046932A (en) | 2012-12-22 | 2012-12-22 | Pre-grouting and water plugging method for permeable layer in vertical shaft |
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Cited By (12)
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| CN103696775A (en) * | 2013-12-20 | 2014-04-02 | 中煤第一建设有限公司 | Large-stage-height multi-group water-containing layer segmented downward grouting method |
| CN104005768A (en) * | 2014-05-26 | 2014-08-27 | 马莎 | Construction strengthening method for soft geological layer in middle section of vertical shaft |
| CN104453913A (en) * | 2014-12-19 | 2015-03-25 | 玉溪大红山矿业有限公司 | Vertical shaft working face ahead pre-grouting method |
| CN107366542A (en) * | 2016-05-13 | 2017-11-21 | 朱世阳 | A kind of grouting method for having been equipped with pit shaft |
| CN108316928A (en) * | 2018-02-07 | 2018-07-24 | 中煤第三建设（集团）有限责任公司 | The production method that grout cover makes auxiliary device and vertical grout cover |
| CN108661650A (en) * | 2018-04-23 | 2018-10-16 | 中铁隧道局集团有限公司 | A kind of rich water magmatic body area depth pozo shaft construction method |
| CN108868776A (en) * | 2018-07-06 | 2018-11-23 | 中钢集团马鞍山矿山研究院有限公司 | The high pressure-bearing broken rock of deep-well induces pre-pouring grout reinforcement means in advance |
| CN109931067A (en) * | 2018-11-27 | 2019-06-25 | 山东大学 | A kind of fiber silicates resin compounded wall for grouting quick constructing method |
| CN112746849A (en) * | 2020-12-11 | 2021-05-04 | 中国矿业大学 | Shaft water-carrying digging and building method |
| CN113027462A (en) * | 2021-05-06 | 2021-06-25 | 万宝矿产有限公司 | Reinforcing method for vertical shaft penetrating through weak surrounding rock |
| CN113153212A (en) * | 2021-04-30 | 2021-07-23 | 北京科技大学 | Vertical shaft high-water-pressure stratum grouting device and construction method |
| CN113309522A (en) * | 2021-06-19 | 2021-08-27 | 莱州汇金矿业投资有限公司 | Construction method for pre-grouting water plugging concrete grout stop pad on working surface of kilometer vertical shaft |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696775A (en) * | 2013-12-20 | 2014-04-02 | 中煤第一建设有限公司 | Large-stage-height multi-group water-containing layer segmented downward grouting method |
| CN103696775B (en) * | 2013-12-20 | 2016-02-24 | 中煤第五建设有限公司 | The descending slip casting method of the high many group aquifer segmentations of large section |
| CN104005768A (en) * | 2014-05-26 | 2014-08-27 | 马莎 | Construction strengthening method for soft geological layer in middle section of vertical shaft |
| CN104453913A (en) * | 2014-12-19 | 2015-03-25 | 玉溪大红山矿业有限公司 | Vertical shaft working face ahead pre-grouting method |
| CN107366542A (en) * | 2016-05-13 | 2017-11-21 | 朱世阳 | A kind of grouting method for having been equipped with pit shaft |
| CN108316928A (en) * | 2018-02-07 | 2018-07-24 | 中煤第三建设（集团）有限责任公司 | The production method that grout cover makes auxiliary device and vertical grout cover |
| CN108661650A (en) * | 2018-04-23 | 2018-10-16 | 中铁隧道局集团有限公司 | A kind of rich water magmatic body area depth pozo shaft construction method |
| CN108868776A (en) * | 2018-07-06 | 2018-11-23 | 中钢集团马鞍山矿山研究院有限公司 | The high pressure-bearing broken rock of deep-well induces pre-pouring grout reinforcement means in advance |
| CN109931067A (en) * | 2018-11-27 | 2019-06-25 | 山东大学 | A kind of fiber silicates resin compounded wall for grouting quick constructing method |
| CN112746849A (en) * | 2020-12-11 | 2021-05-04 | 中国矿业大学 | Shaft water-carrying digging and building method |
| CN113153212A (en) * | 2021-04-30 | 2021-07-23 | 北京科技大学 | Vertical shaft high-water-pressure stratum grouting device and construction method |
| CN113027462A (en) * | 2021-05-06 | 2021-06-25 | 万宝矿产有限公司 | Reinforcing method for vertical shaft penetrating through weak surrounding rock |
| CN113027462B (en) * | 2021-05-06 | 2023-11-24 | 万宝矿产有限公司 | Reinforcing method for shaft penetrating through weak surrounding rock |
| CN113309522A (en) * | 2021-06-19 | 2021-08-27 | 莱州汇金矿业投资有限公司 | Construction method for pre-grouting water plugging concrete grout stop pad on working surface of kilometer vertical shaft |
| CN113309522B (en) * | 2021-06-19 | 2022-11-04 | 莱州汇金矿业投资有限公司 | Construction method for pre-grouting water plugging concrete grout stop pad on working surface of kilometer vertical shaft |
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Application publication date: 20130417 |