CN102758631A - Freezing method of frozen wall of inclined shaft - Google Patents
Freezing method of frozen wall of inclined shaft Download PDFInfo
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- CN102758631A CN102758631A CN2012102729750A CN201210272975A CN102758631A CN 102758631 A CN102758631 A CN 102758631A CN 2012102729750 A CN2012102729750 A CN 2012102729750A CN 201210272975 A CN201210272975 A CN 201210272975A CN 102758631 A CN102758631 A CN 102758631A
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Abstract
The invention provides a freezing method of a frozen wall of a frozen wall of an inclined shaft, solving the problems of difficulty in digging in the construction because an aquifer of the inclined shaft is frozen and low construction speed and meeting safe and rapid construction requirements of the aquifer of the inclined shaft. The freezing method comprises the following steps of: drilling multiple rows of freezing holes which are parallel to each other and vertically distributed, on the group, along an axial freezing range of the inclined shaft, wherein the row number of the freezing holes is determined according to the cross section size of the inclined shaft and the required freezing time, the freezing holes at the lateral part and the freezing holes at the end part respectively go deep into a water-resisting layer in the depth, water in the aquifer at the lower part is isolated by the water-resisting layer, and the freezing holes at the top go deep into the top of the inclined shaft in depth; then arranging a freezing pipe and a liquid supply pipe in each drilled freezing hole, wherein the freezing pipe and the liquid supply pipe in each drilled freezing hole are communicated with an external freezing station; and finally, starting the freezing station and enabling low-temperature saline water prepared by the freezing station to flow in the each freezing pipe to absorb heat of the stratum around each freezing pipe to form a frozen cylinder, wherein all frozen cylinders are continuously enlarged and further connected to form the frozen wall which can resist earth pressure and water pressure.
Description
Technical field
The present invention relates to the mine engineering technical field, be specifically related to a kind of freezing method of inclined shaft frost wall.
Background technology
Freezing sinking shaft is before the inclined shaft tube is dug; Method with artificial cooling; Water bearing ground around the inclined shaft tube is frozen into a sealing, fluid-tight frost wall,, under its protection, carries out driving and masonry construction then in order to getting in touch between opposing ground pressure, hydraulic pressure, isolated underground water and the inclined shaft tube.For forming frost wall, at first intending the boring of beating some on every side of digging the inclined shaft tube, the freezing pipe of band base cone is housed in the hole.The hypothermic saline that refrigeration station makes flows in freezing pipe, absorbs the pipe heat of layer peripherally, forms and freezes cylinder.Along with the continuity of freezing work, the cylinder that freezes around each boring constantly enlarges and is linked to be fluid-tight and can resist the frost wall of ground pressure and hydraulic pressure, till reaching its design thickness and intensity, then under frost wall is protected, carries out the pick block work of inclined shaft tube.
At present; China's inclined shaft tube frozen construction generally is axially to freeze in the scope on ground along the inclined shaft tube; Beat the vertical vertical drilling of several rows; Respectively establish 1～2 row limit row's freezing hole in inclined shaft tube both sides; The inclined shaft tube both sides and the middle vertical vertical freezing borehole degree of depth are all above inclined shaft tube end plate certain depth; Be that the middle a few row's freezing holes of inclined shaft tube need pass inclined shaft tube pick block section; It all is frozen soil that the pick of inclined shaft tube is built in the section; Press purpose though reached isolation underground water with opposing ground; But in the inclined shaft tube construction, need cut off freezing pipe; And frozen soils temperature is low; Intensity is high, excavates difficulty, and speed of application is slow.
Summary of the invention
To the defective of above-mentioned technical problem, the present invention provides a kind of freezing method of inclined shaft frost wall, excavates difficulty, the slow problem of speed of application to solve in the inclined shaft water-bearing interval frozen construction, satisfies the construction requirement safely and fast of inclined shaft water-bearing interval.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of freezing method of inclined shaft frost wall may further comprise the steps:
A. axially freeze in the scope from ground along the inclined shaft tube; Creep into number and arrange freezing hole parallel to each other, vertical layout; Several section size and the required freeze-off times according to the inclined shaft tube of the row of freezing hole are confirmed; The end freezing hole degree of depth at the sidepiece freezing hole of inclined shaft tube both sides and two ends all is deep in the following water barrier of inclined shaft tube freeze section least significant end; Utilize the water in the isolated water-bearing layer, bottom of water barrier, the top freezing hole degree of depth of inclined shaft tube top reaches inclined shaft tube top;
B. in the above-mentioned freezing hole that is drilled with, be provided with the freezing pipe and the feed pipe of base cone, freezing pipe and feed pipe are connected with outside refrigeration station;
C. start refrigeration station its hypothermic saline of making flowed in freezing pipe, absorb the heat on stratum around the freezing pipe, form and freeze cylinder, respectively freeze cylinder and constantly enlarge, so be linked to be fluid-tight and can resist the frost wall of pressure and hydraulic pressure.
The distance that the waste footpath borehole wall keeps 500 ± 50mm is tunneled apart from the inclined shaft tube in freezing pipe bottom in the freezing hole of top, said inclined shaft tube top, and inclined shaft tube top frozen soil is expanded along the waste section configuration of inclined shaft tube vault, forms the frost wall of equidistance, rule apart from the waste footpath of inclined shaft tube.
The interval number meter is got a plurality of points respectively in the gap of above-mentioned freezing hole; Each some place establishes thermometer hole, is provided with the sensing temperature measuring equipment in the thermometer hole, and said temperature measuring equipment links to each other with the control system of refrigeration station; Freezing station control system is produced hypothermic saline (28 ~-32 ℃) and is made its freezing pipe of flowing through according to the freezing hole temperature data that records; Take away the heat of rock stratum around the freezing pipe, it is icing that water in the rock stratum is lowered the temperature gradually, and the rock stratum granular cementation is got up; At the inclined shaft top, both sides and end form the inline freezing wall of sealing; And formed an effective water seal curtain with the water barrier that the freezing pipe bottom gets into, shutoff the water in inclined shaft tube freeze section top, both sides and the aquifer, two ends and the aquifer, water barrier bottom, thereby when guaranteeing that water-bearing interval is built in the inclined shaft pick; Water on every side can not get in the inclined shaft tube, and the inclined shaft tube construction can carry out safely and fast.
Beneficial effect of the present invention is according to knowing the narration of such scheme:
(1) freezing method of employing inclined shaft frost wall of the present invention makes top board, both sides and the end of inclined shaft form freezing curtain, has isolated the water in the aquifer, and the inclined shaft tube construction does not have water burst, has avoided gushing the watered-out well accident;
(2) compare with traditional inclined shaft freezing technology, because no freezing pipe in the inclined shaft tube, the inner rock-soil layer of inclined shaft tube does not freeze; The construction operation condition is good, excavates easily easy construction; Labour intensity is low, and inclined shaft tube pick block speed is fast, the borehole wall build and maintenance quality guaranteed;
(3) the site operation ambient conditions is good, helps constructor's health and safety.
Description of drawings
Fig. 1 is a freezing hole entire arrangement schematical top view of the present invention;
Fig. 2 is a freezing hole entire arrangement side schematic view of the present invention;
Fig. 3 is that inclined shaft tube end freezing hole is arranged sketch map;
Fig. 4 is that inclined shaft tube section freezing hole is arranged sketch map;
Be labeled as among the figure: 1, top freezing hole; 2, sidepiece freezing hole; 3, end freezing hole; 4, thermometer hole; 5, inclined shaft tube; 6, ground; 7, aquifer; 8, water barrier.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Utilize the freezing method of inclined shaft frost wall of the present invention, the peripheral frost wall that forms of inclined shaft may further comprise the steps in the colliery:
A. 6 axially freeze in the scope from ground along inclined shaft tube 5; Creep into number and arrange freezing hole parallel to each other, vertical layout; Row's number of freezing hole and spacing are calculated definite according to the section size and the required freeze-off time of inclined shaft tube 5 through empirical value; Like Fig. 1～shown in Figure 4; End freezing hole 3 degree of depth at the sidepiece freezing hole 2 of inclined shaft tube 5 both sides and two ends all are deep in the following water barrier 8 of inclined shaft tube 5 freeze section least significant ends; Utilize the water in water barrier 8 isolated water-bearing layers, bottom 7, top freezing hole 1 degree of depth of inclined shaft tube 5 tops reaches inclined shaft tube 5 tops;
B. in the above-mentioned freezing hole that is drilled with, be provided with the freezing pipe and the feed pipe of base cone, freezing pipe and feed pipe are connected with outside refrigeration station;
C. start refrigeration station its hypothermic saline of making flowed in frigo, absorb the heat on stratum around the freezing pipe, form and freeze cylinder, respectively freeze cylinder and constantly enlarge, so be linked to be fluid-tight and can resist the frost wall of pressure and hydraulic pressure.
Freezing pipe bottom in top, the above-mentioned inclined shaft tube 5 top freezing hole 1 is apart from the distance of inclined shaft tube 5 drivings waste footpath borehole wall maintenance 500 ± 50mm; Make inclined shaft tube 5 top frozen soil along the waste section configuration expansion of inclined shaft tube 5 vaults, form apart from the frost wall of inclined shaft tube 5 waste footpath equidistance, rule.
The interval number meter is got a plurality of points respectively in the gap of above-mentioned freezing hole, and each some place establishes thermometer hole 4, and thermometer hole 4 degree of depth are not less than 0.5m and confirm according to inclined shaft tube actual grade; Diameter is 60～90mm, and the sensing temperature measuring equipment is set in the thermometer hole 4, and said temperature measuring equipment links to each other with the control system of refrigeration station; Freezing station control system is produced hypothermic saline (28 ~-32 ℃) and is made its freezing pipe of flowing through according to the freezing hole temperature data that records; Take away the heat of rock stratum around the freezing pipe, it is icing that water in the rock stratum is lowered the temperature gradually, and the rock stratum granular cementation is got up; At the inclined shaft top, both sides and end form the inline freezing wall of sealing; And formed an effective water seal curtain with the water barrier 8 that the freezing pipe bottom gets into, shutoff the water in inclined shaft tube 5 freeze section tops, both sides and the aquifer, the two ends 7 and aquifer, water barrier 8 bottom, thereby when guaranteeing that 7 sections in aquifer is built in the inclined shaft pick; Water on every side can not get in the inclined shaft tube 5, and 5 constructions of inclined shaft tube can be carried out safely and fast.
In the above-described embodiments, preferred embodiments of the present invention is described, obviously, under inventive concept of the present invention, still can be made a lot of variations.At this, should explain that any change of under inventive concept of the present invention, being made all will fall in protection scope of the present invention.
Claims (2)
1. the freezing method of an inclined shaft frost wall is characterized in that may further comprise the steps:
A. (6) axially freeze in the scope along inclined shaft tube (5) from ground; Creep into number and arrange freezing hole parallel to each other, vertical layout; Several section size and the required freeze-off times according to inclined shaft tube (5) of the row of freezing hole are confirmed; End freezing hole (3) degree of depth at the sidepiece freezing hole (2) of inclined shaft tube (5) both sides and two ends all is deep in the water barrier (8) below inclined shaft tube (5) the freeze section least significant end; Utilize the water in the isolated aquifer, bottom (7) of water barrier (8), top freezing hole (1) degree of depth of inclined shaft tube (5) top reaches inclined shaft tube (5) top;
B. in the above-mentioned freezing hole that is drilled with, be provided with the freezing pipe and the feed pipe of base cone, freezing pipe and feed pipe are connected with outside refrigeration station;
C. start refrigeration station its hypothermic saline of making flowed in frigo, absorb the heat on stratum around the freezing pipe, form and freeze cylinder, respectively freeze cylinder and constantly enlarge, so be linked to be fluid-tight and can resist the frost wall of pressure and hydraulic pressure.
2. the freezing method of inclined shaft frost wall according to claim 1 is characterized in that: the freezing pipe bottom in said inclined shaft tube (5) the top top freezing hole (1) keeps the distance of 500 ± 50mm apart from the waste directly borehole wall of inclined shaft tube (5) driving.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102729750A CN102758631A (en) | 2012-08-02 | 2012-08-02 | Freezing method of frozen wall of inclined shaft |
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| CN2012102729750A CN102758631A (en) | 2012-08-02 | 2012-08-02 | Freezing method of frozen wall of inclined shaft |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195072A (en) * | 2013-03-25 | 2013-07-10 | 上海理工大学 | Algorithm for speculating freezing curtain development situation |
| CN103343531A (en) * | 2013-07-26 | 2013-10-09 | 刘波 | Freezing strengthening construction method for partial stratums difficult to freeze |
| CN103726852A (en) * | 2013-12-17 | 2014-04-16 | 北京中煤矿山工程有限公司 | Incline step-wise freezing construction process |
| CN104110221A (en) * | 2014-06-23 | 2014-10-22 | 中国矿业大学(北京) | Device for quickly drilling in frozen earth and construction method thereof |
| CN108386228A (en) * | 2018-02-09 | 2018-08-10 | 西安科技大学 | A kind of method of inclined shaft freezing method construction long term monitoring lane wall stress |
| CN108798678A (en) * | 2018-05-30 | 2018-11-13 | 中煤第建设有限公司 | Wear tunnel freezing hole construction technique |
| CN111852483A (en) * | 2020-07-30 | 2020-10-30 | 中煤第一建设有限公司 | Inclined shaft freezing construction process and inclined shaft freezing system |
| CN112031715A (en) * | 2020-09-16 | 2020-12-04 | 中煤第一建设有限公司 | Multipurpose hydrological hole of vertical shaft and construction method thereof |
| CN113356858A (en) * | 2021-07-13 | 2021-09-07 | 中煤第一建设有限公司 | Non-equal-strength composite freezing wall freezing method |
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| CN101418567A (en) * | 2007-10-22 | 2009-04-29 | 上海隧道工程股份有限公司 | Protective cutting construction method for tunnel segment |
| CN102182463A (en) * | 2011-04-12 | 2011-09-14 | 中煤邯郸特殊凿井有限公司 | Inclined shaft freezing heat insulation method |
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2012
- 2012-08-02 CN CN2012102729750A patent/CN102758631A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101418567A (en) * | 2007-10-22 | 2009-04-29 | 上海隧道工程股份有限公司 | Protective cutting construction method for tunnel segment |
| CN102182463A (en) * | 2011-04-12 | 2011-09-14 | 中煤邯郸特殊凿井有限公司 | Inclined shaft freezing heat insulation method |
Non-Patent Citations (2)
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| 周晓敏: "斜井井筒的冻结法施工", 《建井技术》 * |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195072A (en) * | 2013-03-25 | 2013-07-10 | 上海理工大学 | Algorithm for speculating freezing curtain development situation |
| CN103343531A (en) * | 2013-07-26 | 2013-10-09 | 刘波 | Freezing strengthening construction method for partial stratums difficult to freeze |
| CN103726852A (en) * | 2013-12-17 | 2014-04-16 | 北京中煤矿山工程有限公司 | Incline step-wise freezing construction process |
| CN103726852B (en) * | 2013-12-17 | 2016-01-13 | 北京中煤矿山工程有限公司 | A kind of inclined shaft step-by-step movement frozen construction technique |
| CN104110221A (en) * | 2014-06-23 | 2014-10-22 | 中国矿业大学(北京) | Device for quickly drilling in frozen earth and construction method thereof |
| CN108386228A (en) * | 2018-02-09 | 2018-08-10 | 西安科技大学 | A kind of method of inclined shaft freezing method construction long term monitoring lane wall stress |
| CN108798678A (en) * | 2018-05-30 | 2018-11-13 | 中煤第建设有限公司 | Wear tunnel freezing hole construction technique |
| CN111852483A (en) * | 2020-07-30 | 2020-10-30 | 中煤第一建设有限公司 | Inclined shaft freezing construction process and inclined shaft freezing system |
| CN112031715A (en) * | 2020-09-16 | 2020-12-04 | 中煤第一建设有限公司 | Multipurpose hydrological hole of vertical shaft and construction method thereof |
| CN113356858A (en) * | 2021-07-13 | 2021-09-07 | 中煤第一建设有限公司 | Non-equal-strength composite freezing wall freezing method |
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Application publication date: 20121031 |