CN105236867B - Freezing pipe filling cement mortar and freezing pipe filling process - Google Patents
Freezing pipe filling cement mortar and freezing pipe filling process Download PDFInfo
- Publication number
- CN105236867B CN105236867B CN201510633716.XA CN201510633716A CN105236867B CN 105236867 B CN105236867 B CN 105236867B CN 201510633716 A CN201510633716 A CN 201510633716A CN 105236867 B CN105236867 B CN 105236867B
- Authority
- CN
- China
- Prior art keywords
- freezing pipe
- freezing
- cement mortar
- pipe
- cement
- 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.)
- Active
Links
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Freezing pipe filling cement mortar of the present invention, including calcium chloride water, cement, clay powder and cellulose, the wherein weight ratio of calcium chloride water and cement are 0.8~1:1, the adding proportion of clay powder is the 1%~3% of cement weight, and the adding proportion of cellulose is the 0.1%~0.5% of calcium chloride water weight.The present invention also provides a kind of freezing pipe filling process using above-mentioned freezing pipe filling cement mortar, including preparation before slip casting, the preparation of freezing pipe filling cement mortar, the perfusion of freezing pipe filling cement mortar, recycling liquid supply pipe.Freezing pipe filling of the present invention has antifreeze performance with cement mortar, its freezing point can reach subzero 30~40 DEG C, therefore can be under subzero temperature environment, i.e. pit shaft freezing engineering stops normally fill freezing pipe after freezing, so as to save the activity duration, in addition the presetting period of the invention is suitable, and uniaxial compressive strength can reach 4.875MPa after shaping.
Description
Technical field
The present invention relates to construction freezing method field, relates in particular to a kind of freezing pipe filling and is filled with cement mortar and freezing pipe
Fill out technique.
Background technology
Engineering with artificial freezing method is the main special sinking shaft engineering method of China's coal-mine construction, and usually it is circulated using brine (refrigerant agent)
The cold that ground refrigeration plant is produced continuously is transported to underground by system, then carries out hot friendship by freezing pipe and native (rock) layer
Change, and interim building enclosure, that is, frost wall of shaft construction is formed around freezing pipe.With the progress of freezing technology, pit shaft
The depth of freezing is also increasing, and freezing pipe will not only pass through the unstable layer of soil containing water meter, also passes through broken rock, aqueous
The chamber structure such as rock stratum and shaft inset, freezing hole, pipe are likely to become the outer stratum of pit shaft in the future conduit pipe up and down, to pit shaft
Safe to use can bring threat.For this reason, relevant codes and standards defines the requirement to freezing pipe and the outer annular pack of pipe,
To prevent from importing near-borehole formation water in pit shaft from freezing hole, pipe, such as《Colliery roadway engineering construction specification》(GB50511-
2010) provide, after the completion of freezing engineering, when not recycling freezing pipe, freezing pipe application grout filling,《Construction of coal mine is advised safely
Journey》(AQ1083-2011) provide, freezing hole must use cement mortar or concrete filling in time, and filling volume cannot be less than calculating
The 95% of volume.
At present, the outer annular space of freezing pipe preferably solves leading outside pipe using the method for extended slurry displacement mud
Aquaporin problem.But after freezing engineering, freeze for solving the filling in freezing pipe because running into cement mortar under subzero temperature environment
Problem, actual placement method is different, and some mixes dry cement filling using rubble or rubble, or with the filling of rubble clay ball, or
Use grout filling again after melting.
In view of the quickening of current speed of shaft sinking, mine construction side needs to carry out freezing pipe after pit shaft freezing engineering stops freezing
Filling, frost wall at this time not yet start to thaw, and freezing pipe environment temperature is using common cement mortar at -20 DEG C~-30 DEG C
Or in the case that hydrous material is all difficult to carry out normal filling, it is necessary to solve the problems, such as the antifreeze of filler.
The content of the invention
The technical problems to be solved by the invention, which are to provide one kind, normally to be filled under subzero temperature environment, and fill effect
The good freezing pipe filling cement mortar of fruit.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：Freezing pipe filling cement mortar, including chlorine
Change calcium aqueous solution, cement, clay powder and cellulose, the wherein weight ratio of calcium chloride water and cement is 0.8~1:1, clay
The adding proportion of powder is the 1%~3% of cement weight, the adding proportion of cellulose for calcium chloride water weight 0.1%~
0.5%.
Further, wherein the weight ratio of calcium chloride water and cement is 1:1, the adding proportion of clay powder is cement weight
The 1% of amount, the adding proportion of cellulose are the 0.3% of calcium chloride water weight.
Further, the concentration of the calcium chloride water is 24~30Be.The concentration of calcium chloride water is in this scope
It is interior, the resistance to frost of freezing pipe filling cement mortar can be made to reach preferable level.
Freezing pipe filling of the present invention is with the advantages of cement mortar：The present invention has antifreeze performance, its freezing point can reach
Subzero 30~40 DEG C, therefore can be under subzero temperature environment, i.e., pit shaft freezing engineering stops normally fill freezing pipe after freezing
Fill out, so as to save the activity duration, in addition the presetting period of the invention is suitable, and uniaxial compressive strength can reach 4.875MPa after shaping.
The present invention also provides a kind of freezing pipe filling process using above-mentioned freezing pipe filling cement mortar, including following step
Suddenly：
(1) preparation before slip casting
Operation field is cleared up, gets out material requested, installs required equipment, dismounting brine is matched somebody with somebody, brine collecting ring, is beaten
Open frigo head；
(2) preparation of freezing pipe filling cement mortar
Calcium chloride water is evacuated in stock tank, cement, clay powder and cellulose is added, stirs evenly, freeze to obtain the final product
Pipe filling cement mortar, keeps the stirring of freezing pipe filling cement mortar before perfusion；
(3) perfusion of freezing pipe filling cement mortar
1m~2m will be pulled out on liquid supply pipe in freezing pipe, then connect grouting pump and liquid supply pipe with high-pressure hose, and open
The vent valve of high-pressure hose end installation, is then turned on grouting pump conveying freezing pipe filling cement mortar, treats the exhaust of vent valve
Vent valve, freezing pipe filling cement mortar continuous conveying under siphonage by high-pressure hose and liquid supply pipe are closed during mouth pulp
Into freezing pipe, when packed height reaches a segment length, slurry is sent in stopping, while opens vent valve, then that liquid supply pipe is upward
Extract more than the freezing pipe filling cement pulp surface that a segment length makes the end port of liquid supply pipe be located in freezing pipe, then carry out next
The filling of a segment length, untill reaching the packed height needed for freezing pipe；
(4) liquid supply pipe is recycled
Freezing pipe filling cement mortar is filled into the freezing pipe mouth of pipe, then extracts liquid supply pipe, and rushed liquid supply pipe with brine
Wash clean；
(5) the freezing pipe mouth of pipe is handled
After qualified by inspection, mouth of pipe steel cover board soldering and sealing.
Further, one segment length is 150m~200m.
The advantages of freezing pipe filling process of the present invention, is：The present invention is frozen using original liquid supply pipe in freezing pipe to convey
Pipe filling cement mortar is tied, can so simplify work flow, material input is reduced, realizes fast and safe construction, can construct
The mine construction duration is also reduced while quality is guaranteed, and pack effectiveness is high, and after the completion of filling, liquid supply pipe can be complete
Portion recycles and can be used again, so as to save equipment, reduce cost.
Brief description of the drawings
Fig. 1 is freezing pipe filling process flow chart of the present invention.
Embodiment
With reference to embodiment, the invention will be further described：
Various raw materials, are such as not specifically noted used in following embodiments, are commercial product well known in the art.
Embodiment 1
Freezing pipe filling cement mortar, including calcium chloride water, cement, clay powder and cellulose, wherein calcium chloride water
The weight ratio of solution and cement is 1:1, the adding proportion of clay powder is the 1% of cement weight, and the adding proportion of cellulose is chlorine
Change the 0.3% of calcium aqueous solution weight, the concentration of the calcium chloride water is 30Be.
Embodiment 2
Freezing pipe filling cement mortar, including calcium chloride water, cement, clay powder and cellulose, wherein calcium chloride water
The weight ratio of solution and cement is 0.8:1, the adding proportion of clay powder is the 3% of cement weight, and the adding proportion of cellulose is
The 0.5% of calcium chloride water weight, the concentration of the calcium chloride water is 24Be.
Embodiment 3
Freezing pipe filling cement mortar, including calcium chloride water, cement, clay powder and cellulose, wherein calcium chloride water
The weight ratio of solution and cement is 0.9:1, the adding proportion of clay powder is the 2% of cement weight, and the adding proportion of cellulose is
The 0.1% of calcium chloride water weight, the concentration of the calcium chloride water is 27Be.
Embodiment 4
Using the freezing pipe filling process of freezing pipe filling cement mortar, referring to Fig. 1, comprise the following steps：
(1) preparation before slip casting
Operation field is cleared up, gets out material requested, installs required equipment, dismounting brine is matched somebody with somebody, brine collecting ring, is beaten
Open frigo head；
(2) preparation of freezing pipe filling cement mortar
Calcium chloride water is evacuated in stock tank, adds cement, clay powder and cellulose, the speed of addition should not soon simultaneously
It is uniform, to prevent producing agglomerate, stir evenly, up to freezing pipe filling cement mortar, keep freezing pipe filling to use before perfusion
The stirring of cement mortar；
Calcium chloride water can use the brine in freezing pipe chilled brine system equipment or the brine of ground groove recycling,
First dump under normal circumstances in water tank, when slurrying uses nearby, or extracts and use directly out of brine tank or ground flute；Slurry
A submersible sewage pump is separately set in pond, connection thorn rifle carries out secondary agitation to slurries, prevents deposit clumps；
(3) perfusion of freezing pipe filling cement mortar
1m~2m will be pulled out on liquid supply pipe in freezing pipe, then connect grouting pump and liquid supply pipe with high-pressure hose, and open
The vent valve of high-pressure hose end installation, is then turned on grouting pump conveying freezing pipe filling cement mortar, treats the exhaust of vent valve
Vent valve, freezing pipe filling cement mortar continuous conveying under siphonage by high-pressure hose and liquid supply pipe are closed during mouth pulp
Into freezing pipe, when packed height reaches a segment length, slurry is sent in stopping, while opens vent valve, then that liquid supply pipe is upward
Extract more than the freezing pipe filling cement pulp surface that a segment length makes the end port of liquid supply pipe be located in freezing pipe, then carry out next
The filling of a segment length, untill reaching the packed height needed for freezing pipe；
One segment length is 150m~200m than conveniently, can so reduce and pull out while not influencing to extract liquid supply pipe
Number；
Mixer grout outlet and grouting Pump Suction Nozzle set filter screen (mesh is preferably not less than 4mm), to stop cement agglomerate
Cause plugging in access aperture pipe；Before grouting, first by liquid supply pipe lift-off 2~3m of bottom hole, blocked to prevent tube bottom or liquid supply pipe card resistance；
(4) liquid supply pipe is recycled
Freezing pipe filling cement mortar is filled into the freezing pipe mouth of pipe, then extracts liquid supply pipe, and rushed liquid supply pipe with brine
Wash clean；
Avoid stopping over during tube drawing, to prevent mud because of precipitation or pre-hardening holding tube；
(5) the freezing pipe mouth of pipe is handled
After qualified by inspection, mouth of pipe steel cover board soldering and sealing.
Embodiment 5
The performance test of freezing pipe filling cement mortar
Freezing pipe filling cement mortar is prepared at the scene by the formula of embodiment 1 to embodiment 3 and tests the performances such as freezing point,
Then filling sample is made, is placed in -25 DEG C of brine and conserves, visual examination is first then carried out to the sample for conserving 7d, is sent out
Now all sample structures are complete, fine and close, illustrate that subzero temperature environment does not destroy the paste structure of freezing pipe filling cement mortar.Again to supporting
The sample of shield 28d makes a service test.
It the results are shown in Table 1.
Table 1
Remarks：The presetting period of freezing pipe filling cement mortar should not be too early, otherwise can influence to pull out on liquid supply pipe, because work
The particularity of journey, does not require for final setting time.
Embodiment 6
The freezing pipe filling cement mortar and freezing pipe filling process provided by embodiment 1 and embodiment 4 applies Mr. Yu's ore deposit
Auxiliary shaft freezing pipe filling engineering, outer row freeze 400 meters of hole depth, hole count 30, and interior row freezes hole depth 245, and hole count 12, fills
It is as shown in table 2 below to fill out statistics：
Table 2
Conventional cement slurries filling is needed to wait for after freezing engineering 2-3 months, or even the longer time can just carry out, the present invention
It can not only fill immediately, and filling velocity is fast, pack effectiveness is high, fills duration more conventional shortening two weeks, while liquid supply pipe
It can all be recycled and can be used again, it is costly up to 200,000 to save each side such as talent's machine.
To sum up, freezing pipe filling of the present invention preferably solves conventional cement slurries with cement mortar and freezes in subzero temperature environment retrofilling
Ice blockage problem during pipe is tied, realizes and carries out freezing pipe packing job in time after stopping freezing, not only ensure that construction quality, but also contracting
The short duration, for the subsequently permanent fore shaft of pit shaft and changes strand construction and vacates Active workings in advance, also find one for the processing of effluent brine
The new approach of bar.
In addition freezing pipe filling process of the present invention is successively in the new auxiliary shaft of Shandong Xinhe Coal Mine, Ban Ji collieries auxiliary shaft and Yangchuan village
Effective implementation has been obtained in multiple freezing engineerings such as colliery main shaft, new operation means are provided for freezing engineering from now on, are one
The environmentally protective technology of item.
It should be understood that example as described herein and embodiment can be made only for explanation, those skilled in the art according to it
Various modifications or change, in the case where not departing from spirit of the invention, belong to protection scope of the present invention.
Claims (4)
1. freezing pipe filling cement mortar, is made of calcium chloride water, cement, clay powder and cellulose, wherein calcium chloride water
The weight ratio of solution and cement is 0.8~1:1, the adding proportion of clay powder is the 1%~3% of cement weight, and cellulose adds
Add 0.1%~0.5% that ratio is calcium chloride water weight, the concentration of the calcium chloride water is 24~30Be.
2. freezing pipe filling cement mortar as claimed in claim 1, it is characterised in that：Wherein calcium chloride water and cement
Weight ratio is 1:1, the adding proportion of clay powder is the 1% of cement weight, and the adding proportion of cellulose is calcium chloride water weight
The 0.3% of amount.
3. using the freezing pipe filling process of the freezing pipe filling cement mortar any one of claim 1 to 2, including with
Lower step：
(1) preparation before slip casting
Operation field is cleared up, gets out material requested, installs required equipment, dismounting brine is matched somebody with somebody, brine collecting ring, is opened and is frozen
Tie device head；
(2) preparation of freezing pipe filling cement mortar
Calcium chloride water is evacuated in stock tank, cement, clay powder and cellulose is added, stirs evenly, filled up to freezing pipe
Fill out and use cement mortar, the stirring of freezing pipe filling cement mortar is kept before perfusion；
(3) perfusion of freezing pipe filling cement mortar
1m~2m will be pulled out on liquid supply pipe in freezing pipe, then connect grouting pump and liquid supply pipe with high-pressure hose, and open high pressure
The vent valve of hose end installation, is then turned on grouting pump conveying freezing pipe filling cement mortar, treats that the exhaust outlet of vent valve goes out
Vent valve is closed during slurry, freezing pipe filling is delivered continuously to jelly by high-pressure hose and liquid supply pipe with cement mortar under siphonage
Tie in pipe, when packed height reaches a segment length, slurry is sent in stopping, while opens vent valve, then extracts liquid supply pipe upwards
One segment length makes more than the freezing pipe filling cement pulp surface that the end port of liquid supply pipe is located in freezing pipe, then carries out next section
Long filling, untill reaching the packed height needed for freezing pipe；
(4) liquid supply pipe is recycled
Freezing pipe filling cement mortar is filled into the freezing pipe mouth of pipe, then extracts liquid supply pipe, and liquid supply pipe is rinsed with brine and is done
Only；
(5) the freezing pipe mouth of pipe is handled
After qualified by inspection, mouth of pipe steel cover board soldering and sealing.
4. freezing pipe filling process as claimed in claim 3, it is characterised in that：One segment length is 150m~200m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510633716.XA CN105236867B (en) | 2015-09-28 | 2015-09-28 | Freezing pipe filling cement mortar and freezing pipe filling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510633716.XA CN105236867B (en) | 2015-09-28 | 2015-09-28 | Freezing pipe filling cement mortar and freezing pipe filling process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105236867A CN105236867A (en) | 2016-01-13 |
| CN105236867B true CN105236867B (en) | 2018-04-20 |
Family
ID=55034749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510633716.XA Active CN105236867B (en) | 2015-09-28 | 2015-09-28 | Freezing pipe filling cement mortar and freezing pipe filling process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105236867B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625434B (en) * | 2016-03-30 | 2017-06-30 | 中煤特殊凿井有限责任公司 | Grout filling device in freezing pipe |
| CN108798678B (en) * | 2018-05-30 | 2019-11-26 | 中煤第一建设有限公司 | Wear tunnel freezing hole construction technique |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505944A (en) * | 2011-10-25 | 2012-06-20 | 中煤第五建设有限公司 | Water sealing method for replacing mud in freezing holes with slow setting cement grout |
| CN102515640A (en) * | 2011-12-01 | 2012-06-27 | 中国矿业大学 | Retarded cement grout for sealing water of ultra-deep freezing-hole solid pipe |
-
2015
- 2015-09-28 CN CN201510633716.XA patent/CN105236867B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505944A (en) * | 2011-10-25 | 2012-06-20 | 中煤第五建设有限公司 | Water sealing method for replacing mud in freezing holes with slow setting cement grout |
| CN102515640A (en) * | 2011-12-01 | 2012-06-27 | 中国矿业大学 | Retarded cement grout for sealing water of ultra-deep freezing-hole solid pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105236867A (en) | 2016-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104453913B (en) | A kind of Shaft Stopes front pre-grouting method | |
| CN104632252B (en) | Automatic grouting system | |
| CN101634148B (en) | Soil nailing wall foundation pit support and construction method | |
| CN105201513A (en) | Shaft construction method for rail transit | |
| CN104929143B (en) | A kind of bottom of foundation ditch dewatering well shut-in well method | |
| CN109322699B (en) | Pollution isolation and plugging technology under mine | |
| CN104405436B (en) | A kind of method improving ore body Tight filling rate | |
| CN114033483B (en) | Construction method suitable for collapse pit tailing filling process | |
| CN106321105B (en) | A kind of open coal mine end side paste body filling method | |
| CN106368214A (en) | Pile forming operation method for protection barrel type cement soil mixing pile | |
| CN105236867B (en) | Freezing pipe filling cement mortar and freezing pipe filling process | |
| CN110630293A (en) | Double-liquid and method for grouting wall | |
| CN108825298A (en) | A kind of stope filling connects top method | |
| CN109519150A (en) | One kind being directed to the biggish plugging dewatering well device and method of water yield | |
| CN205171496U (en) | Foundation stabilization high pressure jet slip casting device | |
| CN104389634B (en) | A kind of mine vertical shaft sieve well shaft wall structure and controlled trapping method thereof | |
| CN105971605B (en) | A kind of underground mines exploration without waster method | |
| CN207377561U (en) | The bad water-bearing layer positioning targeting slip casting Mine Shaft Lining of rock section and constructing device | |
| CN113339058A (en) | Fluidized gangue layer adjacent surface subsequent filling system and method | |
| CN108019236A (en) | A kind of digging rubble-ultra-fine crude tailings pipeline self conveying filling system and placement method | |
| CN204492745U (en) | Between monitoring two-layer compound Shaft Linings, hydraulic pressure is to determine the device of best time for injecting | |
| CN103774516A (en) | Subbase course stabilizing treatment method for soft foundation excavation roadbed | |
| CN207740012U (en) | A kind of synchronous grouting mortar vehicle for shield-tunneling construction | |
| CN207480896U (en) | A kind of device for continuously stirring supply slurries | |
| CN103352722B (en) | Cemented filling close to back processing technology for goaf at barren rock filling background |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |