CN101462894B - Hydrophobic processing method for soft rock surface - Google Patents
Hydrophobic processing method for soft rock surface Download PDFInfo
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- CN101462894B CN101462894B CN2009100605357A CN200910060535A CN101462894B CN 101462894 B CN101462894 B CN 101462894B CN 2009100605357 A CN2009100605357 A CN 2009100605357A CN 200910060535 A CN200910060535 A CN 200910060535A CN 101462894 B CN101462894 B CN 101462894B
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- soft rock
- processing method
- active agent
- hydrophobic
- spraying
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Abstract
The invention discloses a soft rock surface hydrophobic treatment method and relates to an engineering treatment technology for stabilizing soft rock. The method comprises the following steps: (1) selecting a macromolecular surfactant as a hydrophobic material; (2) spraying the macromolecular surfactant on the surface of the soft rock; and (3) further spraying the macromolecular surfactant on the surface of the soft rock one more time or spraying duly as desired after drying. Octodecyl urea is selected as the macromolecular surfactant. The method has simple process, convenient operation and low cost, and is applicable to enveloping and protecting wall surfaces of the soft rock and hole surfaces of the soft rock.
Description
Technical field
The present invention relates to a kind of engineering treatment technology of stable soft rock, relate in particular to a kind of hydrophobic processing method for soft rock surface.
Background technology
In the construction of geotechnical engineering, run into a kind of bad rock mass---soft rock through regular meeting.This rock mass often contains abundant swelling property mineral, is generally three major types: kaolinite class, illite class and smectites.The poorest with the performance of smectites again in three kinds of stone classes, it is the extremely active materials of a kind of physicochemical property, and it is water-swelling very easily, and these swelling property mineral lack glued.Thereby make soft rock to the non-constant of the resistibility of water, show as: intensity is very high when just excavating, but will soon show as expansion because of the water vapor that absorbs in the atmosphere; Thereby make the rapid deterioration of its mechanical characteristic; Rock strength reduces rapidly, makes the foundation ditch of excavation or tunnel be contracted to and can't use, and also can cause the rock mass unstability under the serious situation and caves in; Cause security incident, the crisis personnel safety.
At present, this ten minutes of engineering bound pair is thorny, and the method for only taking to reprocess is kept normal use.But this reprocessing can occur repeatedly, even fixed specifically, soft rock can have to rebuild once more again because of dilatational strain.This has not only seriously hindered normally carrying out of producing, and jeopardizes personnel safety, and economical load is also very big, needs badly to be resolved.
The reasons for the above problems just are soft rock expansion, and the reason of soft rock expansion is to have absorbed airborne water vapor, and the key of therefore dealing with problems is to reduce the humidity in the atmosphere or the surface envelope of soft rock protected water vapor can't be got into wherein.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect that prior art exists, a kind of hydrophobic processing method for soft rock surface is provided.
The objective of the invention is to realize through following method:
The reasons for the above problems just are soft rock expansion, and the reason of soft rock expansion is to have absorbed airborne water vapor, and the key of therefore dealing with problems is to reduce the humidity in the atmosphere or the surface envelope of soft rock protected water vapor can't be got into wherein.
The humidity that reduces in the atmosphere is to be difficult to realize in engineering, so the present invention takes the method for protecting is sealed on the surface of soft rock.Certain this envelope is protected, and is not to use coating commonly used, and is to use a kind of special material-polymeric surface active agent.
Specifically, the present invention mainly comprises the following steps:
1. select for use polymeric surface active agent as hydrophobic material;
2. polymeric surface active agent is sprayed the surface in soft rock;
3. after the drying, the surface spraying to soft rock once or as required adds spray in good time again.
The present invention has advantage and positively effect:
1, technology is simple, is convenient to operation;
2, with low cost;
3, be applicable to the envelope of soft rock wall and soft rock hole face is protected.
Description of drawings
Fig. 1 is the surfactant structure explanatory view;
Fig. 2 is the explanatory view at soft rock wall spray polymeric surface active agent;
Fig. 3 is the explanatory view of the spray polymeric surface active agent in transverse section, soft rock hole.
Wherein:
The molecule of 10-tensio-active agent,
The 11-hydrophilic group, the 12-hydrophobic group;
20-soft rock wall;
30-soft rock hole face.
Embodiment
Specify below in conjunction with accompanying drawing and embodiment:
1, tensio-active agent
Like Fig. 1, the molecule 10 of tensio-active agent is made up of hydrophilic group 11 and hydrophobic group 12.
Hydrophilic group 11 has and the soft rock surface effect of combining closely;
Hydrophobic group 12 has the effect of isolated water steam.
Polymeric surface active agent is selected the octadecyl urea for use.
2, spray way
In actual geotechnical engineering, can select according to on-the-spot practice of construction condition and specific requirement:
(1) selects atomizer for use
(2) select spray pump for use
(3) other feasible spray mode
3, compliance test result
After method of the present invention was handled, it was surplus to place high wet environment to continue the moon, still better keeps the soft rock primary characteristic with the several piece soft rock, did not see expansion or softening, proved that present method is reliable.
Claims (2)
1. a hydrophobic processing method for soft rock surface is characterized in that comprising the following steps:
1. select for use polymeric surface active agent as hydrophobic material;
2. polymeric surface active agent is sprayed the surface in soft rock;
3. after the drying, the surface spraying to soft rock once or as required adds spray in good time again;
Described polymeric surface active agent is selected the octadecyl urea for use.
2. by the described a kind of hydrophobic processing method for soft rock surface of claim 1, it is characterized in that:
Select atomizer or spray pump spray for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100605357A CN101462894B (en) | 2009-01-16 | 2009-01-16 | Hydrophobic processing method for soft rock surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100605357A CN101462894B (en) | 2009-01-16 | 2009-01-16 | Hydrophobic processing method for soft rock surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101462894A CN101462894A (en) | 2009-06-24 |
| CN101462894B true CN101462894B (en) | 2012-04-25 |
Family
ID=40803719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100605357A Expired - Fee Related CN101462894B (en) | 2009-01-16 | 2009-01-16 | Hydrophobic processing method for soft rock surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101462894B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002934B (en) * | 2010-11-03 | 2011-11-16 | 太原理工大学 | In-situ modification reinforcing method for expansive soft rock soil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219443A (en) * | 1997-11-17 | 1999-06-16 | 气体产品与化学公司 | Surface tension reduction with N-N-dialkyl ureas |
| CN101319612A (en) * | 2008-07-23 | 2008-12-10 | 中国科学院武汉岩土力学研究所 | Electrochemical stabilization method for soft rock |
-
2009
- 2009-01-16 CN CN2009100605357A patent/CN101462894B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219443A (en) * | 1997-11-17 | 1999-06-16 | 气体产品与化学公司 | Surface tension reduction with N-N-dialkyl ureas |
| CN101319612A (en) * | 2008-07-23 | 2008-12-10 | 中国科学院武汉岩土力学研究所 | Electrochemical stabilization method for soft rock |
Non-Patent Citations (1)
| Title |
|---|
| JP昭61－36189A 1986.02.20 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101462894A (en) | 2009-06-24 |
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Granted publication date: 20120425 Termination date: 20180116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |