CN110410079B - Non-pressure grouting method based on mine construction - Google Patents
Non-pressure grouting method based on mine construction Download PDFInfo
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- CN110410079B CN110410079B CN201910711580.8A CN201910711580A CN110410079B CN 110410079 B CN110410079 B CN 110410079B CN 201910711580 A CN201910711580 A CN 201910711580A CN 110410079 B CN110410079 B CN 110410079B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention discloses a non-pressure grouting method based on mine construction, which comprises the following steps: s1, arranging a plurality of grouting holes along the cross section of the well wall of the mine, wherein each grouting hole is correspondingly provided with a gate valve; s2, opening all gate valves; s3, grouting the grouting holes from bottom to top according to the horizontal height sequence, and closing the gate valve on the corresponding grouting hole after grouting of each grouting hole is completed; and S4, closing the gate valves on all the grouting holes, and finishing grouting. The gate valves corresponding to the grouting holes for completing grouting are all opened in the grouting process, so that pressure relief can be effectively realized, grouting in a non-pressure state can be realized in the whole grouting process, the pressure of a well wall is greatly reduced, and the quality of the well wall is ensured.
Description
Technical Field
The invention belongs to the technical field of mine construction, and particularly relates to a non-pressure grouting method based on mine construction.
Background
In mine construction (shaft and tunnel), the surrounding rock is broken or a small amount of water is gushed, and the broken surrounding rock needs to be reinforced after the well wall and the quality of the well wall is not good due to water gushing, and the wall needs to be reinforced by grouting after the broken surrounding rock passes through the bad rock layer. Because the pressure bearing of the well wall is limited, how to ensure the quality of the well wall is an urgent problem to be solved in the grouting process.
Therefore, in order to solve the above technical problems, it is necessary to provide a non-pressure grouting method based on mine construction.
Disclosure of Invention
In view of the above, the present invention aims to provide a non-pressure grouting method based on mine construction.
In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:
a non-pressure grouting method based on mine construction, the method comprising:
s1, arranging a plurality of grouting holes along the cross section of the well wall of the mine, wherein each grouting hole is correspondingly provided with a gate valve;
s2, opening all gate valves;
s3, grouting the grouting holes from bottom to top according to the horizontal height sequence, and closing the gate valve on the corresponding grouting hole after grouting of each grouting hole is completed;
and S4, closing the gate valves on all the grouting holes, and finishing grouting.
In one embodiment, the well is a vertically disposed wellbore.
In one embodiment, the wall of the shaft is respectively provided with a plurality of grouting holes on sections with different horizontal heights.
In one embodiment, the sections on the well wall of the shaft are uniformly distributed at equal intervals, and the grouting holes on each section are distributed at equal intervals.
In an embodiment, the step S3 specifically includes:
s311, grouting is conducted on one grouting hole in the first cross section with the lowest horizontal height, and when slurry flows out of other grouting holes in the first cross section, a gate valve in the grouting hole for grouting is closed;
s312, grouting the grouting holes from which the grout flows out, repeating the step S311 after the next grouting hole from which the grout flows out, until the last grouting hole on the first section is grouted, and closing the gate valve on the last grouting hole on the first section when the grout flows out from a certain grouting hole on the second section with the horizontal height higher than that of the first section;
and S313, repeating the steps S311 and S312, and finishing grouting of the grouting holes on all the sections.
In one embodiment, the mine is a horizontally disposed roadway.
In one embodiment, the wall of the roadway is provided with a plurality of grouting holes with different horizontal heights on different sections.
In one embodiment, the sections on the wall of the roadway are uniformly distributed at equal intervals, and the grouting holes on each section are distributed at equal intervals.
In an embodiment, the step S3 specifically includes:
s321, grouting is carried out on one grouting hole in the first horizontal height with the lowest horizontal height on the first cross section, and when slurry flows out of the grouting holes in other cross sections on the first horizontal height, a gate valve on the grouting hole for grouting is closed;
s322, grouting the grouting holes from which the grout flows out, repeating the step S321 when the grout flows out of the next grouting hole on the first level, and closing the gate valve on the last grouting hole on the first level when the grouting hole on a certain section on the second level higher than the first level flows out of the grout;
and S323, repeating the steps S321 and S322, and finishing the grouting of the grouting holes on all the horizontal heights.
In an embodiment, after the step S3, the method further includes:
and (4) performing supplementary grouting on the grouting holes without the grout, and closing the gate valves on the corresponding grouting holes after the supplementary grouting is completed.
Compared with the prior art, the invention has the following advantages:
the gate valves corresponding to the grouting holes for completing grouting are all opened in the grouting process, so that pressure relief can be effectively realized, grouting in a non-pressure state can be realized in the whole grouting process, the pressure of a well wall is greatly reduced, and the quality of the well wall is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic flow diagram of a non-pressure grouting method based on mine construction according to the present invention;
FIGS. 2a and 2b are a cross-sectional view and a cross-sectional view, respectively, of a wellbore in accordance with example 1 of the present invention;
fig. 3a and 3b are a sectional view and a sectional view of a tunnel in embodiment 2 of the present invention, respectively.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
Referring to fig. 1, the invention discloses a non-pressure grouting method based on mine construction, which comprises the following steps:
s1, arranging a plurality of grouting holes along the cross section of the well wall of the mine, wherein each grouting hole is correspondingly provided with a gate valve;
s2, opening all gate valves;
s3, grouting the grouting holes from bottom to top according to the horizontal height sequence, and closing the gate valve on the corresponding grouting hole after grouting of each grouting hole is completed;
and S4, closing the gate valves on all the grouting holes, and finishing grouting.
The mine comprises two types of vertically arranged shafts and horizontally arranged roadways, and the pressureless grouting method of the shafts and the roadways is described in detail below by combining specific embodiments.
Example 1: non-pressure grouting method for shaft
Referring to fig. 2a and 2b, the wellbore wall of the wellbore 10 sequentially includes a first section 11 and a second section 12 … from bottom to top at different levels, a plurality of grouting holes are equidistantly distributed on each section, for example, the interval between sections is 2m in this embodiment, the first section 11 is sequentially provided with grouting holes 111, 112, 113, 114, 115 and 116, the section of the first section 11 is circular, 6 grouting holes are equidistantly and uniformly distributed along the circumference, the interval between adjacent grouting holes is 2m, the grouting holes on the other sections are arranged the same as the first section, and details are not repeated here. In addition, each grouting hole is correspondingly provided with a gate valve for controlling the opening or closing of the grouting holes.
The pressureless grouting method in the embodiment comprises the following specific steps:
firstly, opening all gate valves to play a pressure relief role, thereby keeping grouting in a non-pressure state;
when grouting is started from the grouting hole 111 on the first section 11, when grouting is started from the grouting hole 111, another adjacent grouting hole (such as the grouting hole 112) or a spaced grouting hole (such as the grouting hole 113) is certainly discharged from the grouting hole on the first section 11, and then a gate valve on the grouting hole 111 is closed;
then grouting the grouting hole (such as the grouting hole 112 or 113) for discharging the grout, and circulating the above operations until the last grouting hole on the first section is grouted when the next grouting hole discharges the grout;
when the last grouting hole on the first section 11 is grouted, gate valves of all grouting holes on the second section 12 are still opened, the last grouting hole on the first section 11 is grouted to the second section 12, grouting holes start to flow out of grout, the last grouting hole on the first section is closed, the grouting hole of the first grout on the second section starts to be grouted, and meanwhile, all gate valves of the grouting holes on the third section and the like are opened;
and repeating the grouting steps in such a way until all grouting holes of the positions needing grouting are completely grouted.
In addition, if the situation that the grout does not flow out of a certain grouting hole exists all the time during grouting, the grouting hole which does not flow out of the grout needs to be subjected to supplementary grouting, the gate valve on the corresponding grouting hole is closed after the supplementary grouting is finished, attention is paid to observation during the supplementary grouting, the situation that the grout cannot flow out is likely to occur, and the situation that the well wall is damaged due to overlarge instantaneous pressure is prevented.
Example 2: roadway non-pressure grouting method
Referring to fig. 3a and 3b, the wall of the roadway 20 sequentially includes a first section 21 and a second section 22 … in the horizontal direction, each section has a plurality of grouting holes distributed at equal intervals, for example, the interval between the sections is 2m in this embodiment, the first section 21 is sequentially provided with grouting holes 211, 212, 213, 214, 215, and 116, the grouting holes 211 and 216 are located at the same horizontal height, the grouting holes 212 and 215 are located at the same horizontal height, the grouting holes 213 and 214 are located at the same horizontal height, the interval between the 6 grouting holes on the first section 11 is 2m, the grouting holes on the other sections are the same as the first section, and details are not repeated here. In addition, each grouting hole is correspondingly provided with a gate valve for controlling the opening or closing of the grouting holes.
When the roadway is grouted, the orifice pipes of the grouting section are completely installed, and then grouting or arch sealing is carried out.
The pressureless grouting method in the embodiment comprises the following specific steps:
firstly, opening all gate valves to play a pressure relief role, thereby keeping grouting in a non-pressure state;
then, grouting is performed on one grouting hole 211 in the first horizontal height with the lowest horizontal height on the first cross section 21, and when grout flows out of grouting holes (such as the grouting hole 216) in other cross sections on the first horizontal height, a gate valve on the grouting hole 211 for grouting is closed;
then grouting the grouting holes (such as the grouting hole 216) for discharging the grout, and repeating the steps until the grout is discharged from the grouting hole at the next first level until the last grouting hole at the first level is filled;
grouting the last grouting hole on the first level of all the sections, and closing the gate valve on the last grouting hole on the first level when the grouting hole (such as the grouting hole 212) on a certain section on the second level with the level higher than the first level flows out the grout;
and repeating the grouting steps in such a way until all grouting holes of the positions needing grouting are completely grouted.
In addition, if the situation that the grout does not flow out of a certain grouting hole exists all the time during grouting, the grouting hole which does not flow out of the grout needs to be subjected to supplementary grouting, the gate valve on the corresponding grouting hole is closed after the supplementary grouting is finished, attention is paid to observation during the supplementary grouting, the situation that the grout cannot flow out is likely to occur, and the situation that the well wall is damaged due to overlarge instantaneous pressure is prevented.
It should be understood that the protection scope of the present invention is not limited to the shape of the cross section and the number and arrangement of the grouting holes on each cross section in the above embodiments, and the cross section shape and the arrangement of the grouting holes in other embodiments may be designed as required, and are not described in detail herein.
According to the technical scheme, the invention has the following beneficial effects:
the gate valves corresponding to the grouting holes for completing grouting are all opened in the grouting process, so that pressure relief can be effectively realized, grouting in a non-pressure state can be realized in the whole grouting process, the pressure of a well wall is greatly reduced, and the quality of the well wall is ensured.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. A non-pressure grouting method based on mine construction is characterized by comprising the following steps:
s1, arranging a plurality of grouting holes along the cross section of the well wall of the mine, wherein each grouting hole is correspondingly provided with a gate valve;
s2, opening all gate valves;
s3, grouting the grouting holes from bottom to top according to the horizontal height sequence, and closing the gate valve on the corresponding grouting hole after grouting of each grouting hole is completed;
s4, after gate valves on all grouting holes are closed, grouting is completed;
the mine is a vertically arranged shaft, the wall of the shaft is respectively provided with a plurality of grouting holes on sections with different horizontal heights, and the step S3 specifically comprises the following steps:
s311, grouting is conducted on one grouting hole in the first cross section with the lowest horizontal height, and when slurry flows out of other grouting holes in the first cross section, a gate valve in the grouting hole for grouting is closed;
s312, grouting the grouting holes from which the grout flows out, repeating the step S311 after the next grouting hole from which the grout flows out, until the last grouting hole on the first section is grouted, and closing the gate valve on the last grouting hole on the first section when the grout flows out from a certain grouting hole on the second section with the horizontal height higher than that of the first section;
s313, repeating the steps S311 and S312 to complete grouting of the grouting holes on all the sections;
or the like, or, alternatively,
the mine is a horizontally arranged roadway, a plurality of grouting holes with different horizontal heights are respectively arranged on different sections of the wall of the roadway, and the step S3 specifically comprises the following steps:
s321, grouting is carried out on one grouting hole in the first horizontal height with the lowest horizontal height on the first cross section, and when slurry flows out of the grouting holes in other cross sections on the first horizontal height, a gate valve on the grouting hole for grouting is closed;
s322, grouting the grouting holes from which the grout flows out, repeating the step S321 when the grout flows out of the next grouting hole on the first level, and closing the gate valve on the last grouting hole on the first level when the grouting hole on a certain section on the second level higher than the first level flows out of the grout;
and S323, repeating the steps S321 and S322, and finishing the grouting of the grouting holes on all the horizontal heights.
2. The pressureless grouting method based on mine construction according to claim 1, characterized in that the sections on the wall of the shaft are evenly distributed at equal intervals, and the grouting holes on each section are evenly distributed, or the sections on the wall of the roadway are evenly distributed at equal intervals, and the grouting holes on each section are evenly distributed.
3. The pressureless grouting method based on mine construction of claim 1, wherein the step S3 is followed by further comprising:
and (4) performing supplementary grouting on the grouting holes without the grout, and closing the gate valves on the corresponding grouting holes after the supplementary grouting is completed.
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| CN201910711580.8A CN110410079B (en) | 2019-08-02 | 2019-08-02 | Non-pressure grouting method based on mine construction |
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| CN201910711580.8A CN110410079B (en) | 2019-08-02 | 2019-08-02 | Non-pressure grouting method based on mine construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1462712A (en) * | 1973-02-19 | 1977-01-26 | Pont A Mousson | Voussoirs |
| RU2014465C1 (en) * | 1991-01-18 | 1994-06-15 | Государственный проектно-изыскательский и научно-исследовательский институт "Гидропроект" | Device for supporting mine workings |
| JP5230468B2 (en) * | 2009-02-03 | 2013-07-10 | 大成建設株式会社 | Ground improvement device and ground improvement method for shield machine |
| CN102108701B (en) * | 2009-12-29 | 2013-07-24 | 贵阳铝镁设计研究院有限公司 | Method for reinforcing soil at periphery of column by non-pressure grouting |
| CN104453915B (en) * | 2014-11-14 | 2016-09-07 | 中铁二十一局集团第三工程有限公司 | Big cross section vertical shaft pre-pouring grout reinforces Rapid Excavation method |
| CN105275481A (en) * | 2015-11-11 | 2016-01-27 | 山东深博巷道支护技术有限公司 | Novel efficient rock surrounding and grouting reinforcement method |
| CN107060767B (en) * | 2017-05-25 | 2018-04-03 | 安徽理工大学 | Deep vertical stratum consolidation filling system and its grouting method under existing wellbore conditions |
| CN109723466A (en) * | 2018-12-10 | 2019-05-07 | 中交一公局桥隧工程有限公司 | A kind of tunnel just branch infiltration injecting treatment construction method |
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