CN102852535B - Underground two-fluid grouting device - Google Patents
Underground two-fluid grouting device Download PDFInfo
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- CN102852535B CN102852535B CN201210131874.1A CN201210131874A CN102852535B CN 102852535 B CN102852535 B CN 102852535B CN 201210131874 A CN201210131874 A CN 201210131874A CN 102852535 B CN102852535 B CN 102852535B
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Abstract
The invention relates to an underground two-fluid grouting device comprising a grouting inner tube and a grouting outer tube which are nested together, wherein the grouting inner tube and the grouting outer tube are two independent closed pipelines. The grouting inner tube comprises a high-pressure rubber hose joint I, a short tube I, a seal joint, a drill rod and an injector which are sequentially connected, wherein the components are connected to form a closed grouting pipeline, and the short tube I is provided with a check valve I. According to the invention, the drill rod and a drill hole water stopping sleeve are used for being respectively taken as a fluid conveying pipeline, double-tube grouting is realized, depth of a grouting tube in a drill hole is changed for adjusting a position at which two fluids are mixed and the operation time of the mixed fluid in the drill hole, and the aims of adjusting two-fluid solidification time in a deeper drill hole and eliminating a bad result that the drill hole is blocked by the fluid are achieved, so that a better grouting effect is guaranteed.
Description
Technical field
The present invention relates to a kind of water blocking device be applied in the environment such as mine down-hole or tunnel under river channels, especially down-hole two fluid grouting device.
Background technology
At present for the grouting for water blocking after the water outlet such as mine, traffic, especially shorter at exhalant canal, hydraulic pressure is higher, and flow velocity, faster in situation, requires that slip casting plugging material will possess rapid solidification, and ratio such as can to adjust as required at the requirement.But shutoff water outlet at present generally adopts macromolecular material or cement grout, and aperture hybrid mode is carried out.When holing darker, adopt aperture hybrid mode by longer for the range ability made after two kinds of slurries mixing in boring, running time is longer, and slurries very easily solidify and plug-hole before being pushed out boring in holing; Water blockoff in shorter water gushing channelway, requires that the setting time of slurries is often shorter, implements two fluid grouting and be difficult to accomplish in comparatively gun drilling, and reason is exactly the degree of depth of boring.The adjustment of the setting time of the current macromolecular material for dynamic water slip casting also can only be regulated by the length adjusting transfer pipeline, and the scope that can regulate is also limited.After Unit liquid cement paste injects, overflow very soon with water, slip casting effect is poor.
Some units use two-tube slip casting, are exactly the slip casting adopting two transfer pipelines parallel, reach the object of two fluid grouting, but pipeline connects complicated, are difficult to safeguard and maintenance.
Summary of the invention
The object of the invention is the two fluid grouting problem under the dynamic swelling water condition in solution mine down-hole or traffic tunnel, there is provided a kind of technique simple, adjustable compared with biliquid setting time in gun drilling, eliminate the disastrous effect of slurries plug-hole, ensure the down-hole two fluid grouting device of better slip casting effect.
For achieving the above object, the present invention adopts following technical proposals:
A kind of down-hole two fluid grouting device, comprise the interior pipe of the slip casting nested together and slip casting outer tube, in described slip casting, pipe and slip casting outer tube are two independently closed conduits.
In described slip casting, pipe comprises the high-pressure rubber hose coupling I, short tube I, seal nipple, drilling rod and the ejector that are connected successively, and former components is connected to form airtight grouting pipeline; Described short tube I is provided with back only valve I.
Described slip casting outer tube comprises sealing sleeve pipe, sealing sleeve pipe front end adpting flange II, flange II front end connects high pressure valve one end, the high pressure valve other end is connected on sealing flange I, the center weld of sealing flange I has seal nipple, sealing sleeve pipe connects short tube II, short tube II is provided with back only valve II, and short tube II is connected with high-pressure rubber hose coupling II.
Described time only valve I and return and stop valve II and include the upper valve body and lower valve body that are connected, be provided with stepped cavity in upper and lower valve body, be provided with spring base in stepped cavity, linking springs one end on spring base, the spring other end withstands on steel ball.
Present invention utilizes drilling rod with boring sealing sleeve pipe respectively as slurries transfer pipeline, achieve two-tube slip casting, the time run in boring after regulating the position of two kinds of slurries mixing and mixing by the degree of depth changing Grouting Pipe in boring, reach adjustable compared with biliquid setting time in gun drilling, eliminate the disastrous effect of slurries plug-hole, thus ensure good slip casting effect.
Adopt grouting process of the present invention as follows, comprise the following steps:
A. first to construct inlet well, according to " mine geological hazards specifies " the 98 article of regulation to water-baffling sleeve length of tube, be drilled into drilling depth and exceed sealing sleeve pipe specific length 1.0m place, then sealing sleeve pipe is entered under in boring, and with portland cement or sulphate aluminium cement, sealing is carried out to the annular gap between sealing sleeve pipe and boring, form material for sealing;
B. after material for sealing waits solidifying 8-10 hour, enter drill bit under in sealing sleeve pipe and sweep the material for sealing only remained in sealing sleeve pipe, the cleaning bottom of hole degree of depth will exceed sealing casing shoe 0.5m, and this 0.50m is open-hole section, and rinses well in sealing sleeve pipe and open-hole section with clear water.
C. at sealing sleeve pipe welded flange II suitable for reading, welded flange II connects high pressure valve, high pressure valve is connected with sealing flange I, sealing flange I is connected with short tube I by seal nipple, short tube I is provided with back only valve I, and short tube I is connected with high-pressure rubber hose coupling I.
D. withstand voltage test, with grouting pump to injected clear water in sealing sleeve pipe, along with the increase of injected water volume, because sealing sleeve pipe is closed system, clear water in sleeve pipe is compressed, pressure values can increase gradually, until the pressure values of grouting pump pressure meter display reaches sealing sleeve pipe sealing design pressure (be generally the residing horizontal absolute altitude place of boring disclose 2.5 times of aquifer hydraulic pressure value);
E. withstand voltage test qualified after, unload sealing flange I successively, return only valve I, short tube I and high-pressure rubber hose coupling I, and open high pressure valve, drill bit and drilling rod is entered under in sealing sleeve pipe, continue probing, until disclose containing permeable structure, till there is larger water yield in boring, and record the water burst degree of depth;
F. on high pressure valve, again connect sealing flange I successively, return only valve I, short tube I and high-pressure rubber hose coupling I, use container or water flowmeter to measure water yield in the boring unit interval respectively, go out actual hydraulic pressure value by gauge measurement;
G. UNICOM's test: be connected high-pressure rubber hose coupling I to high pressure valve with high-voltage tube by grouting pump, open high pressure valve, the Portland cement slurry be stirred is injected in sealing sleeve pipe, the cement paste if underground gushing water point is gushed out and relatively seriously (get water sample containing cement paste with container at issue, when after precipitation, cement precipitation capacity volume accounts for 1/4 of volume of water sample, be considered as more serious), then prove to possess the condition that two fluid grouting is implemented in down-hole, calculating beginning slip casting is the running pulp time to the time of cement paste of gushing out; If running pulp or running pulp are not slightly, directly inject single liquid cement grout and can reach grouting for water blocking effect;
2) enforcement of two fluid grouting technique
A. measure pump value, owing to being down-hole two fluid grouting, needing choice for use two grouting pumps or use a Double-liquid mud-injection pump, selecting two grouting pumps, then need the pump value of each gear measuring two grouting pumps; Use a Double-liquid mud-injection pump, then need the pump value of two cylinders measuring the different slurries of conveying respectively;
B. respectively bi-material is mixed with the slurries of variable concentrations at underground grouting scene, and measures its concentration;
C. two kinds of mixed setting times of slurries and set strength under many group different parameters is made respectively according to different pump value and different concentration of slurry values, and record respectively;
D. according to running pulp time and two kinds of mixed setting times of slurries of single liquid cement paste, after selecting optimum grouting parameter i.e. two kinds of slurries mixing, its setting time is less than the data of running pulp time, and the intensity of mixing after coagulation reaches and can not be broken up by flowing water;
E. according to the unit injection rate of the optimum grouting parameter of the two kinds of slurries determined in boring open-hole aperture and abovementioned steps d, calculate the distance that slurries when reaching best setting time run in boring, this distance is and is arranged on ejector in boring to the distance containing water producing fractures;
F. according to the distance calculated in step e, drilling rod and ejector are connected, and drilling rod front end is connected on sealing flange I, require that all junctions must tight No leakage.
G. two grouting pumps are connected with high-pressure rubber hose coupling I and high-pressure rubber hose coupling II respectively by high-pressure rubber pipe;
H. according to the optimum grouting parameter that step b, c, d determine, make two kinds of required concentration of slurry respectively at the scene, and by optimum grouting parameter, grouting pump is arranged on corresponding gear;
I. the first grouting pump connecting high-pressure rubber hose coupling is first opened, according in selected optimum grouting parameter to the unit interval injection rate of B liquid and pump amount (measurement unit is L/min), in sealing sleeve pipe and boring, B liquid is injected by the first grouting pump, the manometric registration of record pump amount now and the first grouting pump, is and starts pump amount when noting B liquid and force value;
J. along with slip casting is carried out, when equaling sealing casing volume and open-hole section borehole volume sum through calculating B liquid injection rate, open the second grouting pump, the unit interval injection rate to A liquid required according to selected optimum grouting parameter and pump amount (measurement unit is L/min), carrying A liquid to pass through high-pressure rubber hose coupling I, short tube I, seal nipple, drilling rod from the nozzle of ejector by the second grouting pump is that jet-like sprays, and the manometric registration of record pump amount now and the second grouting pump, be and start pump amount when noting A liquid and force value;
K.A liquid mixes at injector locations with B liquid, and under the promotion of the first grouting pump and the second grouting pump two grouting pump power, running containing in water producing fractures in the country rock that boring discloses, mixed two kinds of slurries are in operation chemically reactive condensing gradually, colloidal is condensed into gradually by liquid, finally form the solid of some strength, colloidal and solid shape mixed material enter into containing water producing fractures, play plugging function;
L. after slip casting starts, observe manometric registration situation of change on two grouting pumps respectively at any time, observe water yield change and the variation of water of issue; Slip casting can be terminated in two kinds of situation: one is when pressure meter registration reaches slip casting ending standard (being generally the 1.5-2.0 of the pressure values of head height in aquifer, absolute altitude place residing for drilling orifice doubly), be taken up in order of priority closedown second grouting pump and the first grouting pump, stop slip casting.Two is when finding that issue water yield obviously reduce even no longer water burst, although or water yield reduce, reduce to when no longer reducing to a certain degree, stop slip casting.
Beneficial effect of the present invention shows the following aspects:
(1) overcome down-hole two fluid grouting in the past and implement the difficult problem that aperture mixing often causes slip casting failure.
(2) down-hole is difficult to note a dual slurry difficult problem compared with gun drilling is solved.
(3) due to the existence of interior pipe, can by pipe and the position of ejector in regulating, solve the technical problem of two fluid grouting under multiple biliquid conditions of mixture ratios.
(4) test operation of two fluid grouting theory and bi-material proportioning parameter has been invented.
(5) down-hole two fluid grouting preparation has been invented.
(6) Rule of judgment whether down-hole possesses two fluid grouting has been invented.
(7) operating procedure and the computational methods thereof of down-hole two fluid grouting have been invented.
(8) except implementing down-hole two fluid grouting at normal temperatures, the two fluid grouting under all right choice for use hot conditions.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart;
Fig. 2 is down-hole of the present invention two fluid grouting device structural representation;
Fig. 3 is Grouting Pipe I of the present invention, Grouting Pipe II and sealing flange I connection diagram;
Fig. 4 is that the present invention returns only valve I and return only valve II structural representation;
Fig. 5 is the present invention 1.6g/cm in biliquid proportioning test
3cement paste and 37Be water glass initial setting time change curve at 25 DEG C;
Fig. 6 is the present invention 1.6g/cm in C-S proportioning test
3cement paste and 37Be water glass initial setting time change curve at 35 DEG C;
Fig. 7 the present invention is 10Be water glass and 1.6g/cm in C-S proportioning test
3cement paste is at 50 DEG C of initial setting time change curves;
Fig. 8 be in the present invention in C-S proportioning test different densities cement grout and same concentrations water glass slurries and at normal temperatures the initial setting time with proportioning change curve;
Wherein 1. high-pressure rubber hose couplings I, 2. short tube I, 3. sealing flange I, 4. high pressure valve, 5. flange II, 6. sealing sleeve pipe, 7. drilling rod, 10. ejector, 11. short tubes II, stop valve II, 13. high-pressure rubber hose coupling for 12. times and stop valve I II, 14. times, 15. upper valve bodies, 16. steel balls, 17. springs, 18. times valve bodies, 19. spring bases, 20. seal nipples.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in figs 2-4, down-hole two fluid grouting device, comprise the interior pipe of the slip casting nested together and slip casting outer tube, in slip casting, pipe and slip casting outer tube are two independently closed conduits.
In slip casting, pipe comprises the high-pressure rubber hose coupling I 1, short tube I 2, seal nipple 20, drilling rod 7 and the ejector 10 that are connected successively, and former components is connected to form airtight grouting pipeline; Described short tube I 2 is provided with back only valve I 14.
Slip casting outer tube comprises sealing sleeve pipe 6, sealing sleeve pipe 6 front end adpting flange II 5, flange II 5 front end connects high pressure valve 4 one end, high pressure valve 4 other end is connected on sealing flange I 3, the center weld of sealing flange I 3 has seal nipple 20, sealing sleeve pipe 6 connects short tube II 11, short tube II 11 is provided with back only valve II 12, and short tube II 11 is connected with high-pressure rubber hose coupling II 13.
State back only valve I 14 and return and stop valve II 12 and include the upper valve body 15 and lower valve body 18 that are connected, be provided with stepped cavity in upper and lower valve body 18, be provided with spring base 19 in stepped cavity, linking springs 17 one end on spring base 19, spring 17 other end withstands on steel ball 16.
The connection description of two fluid grouting device:
Before the whole two fluid grouting device of connection, following preparation be carried out:
(1) according to shown in accompanying drawing 3, first seal nipple 20 is welded on sealing flange I 3, ensure under high pressure No leakage after welding, without sand holes, smooth welding joint is smooth.
(2) assembling back only valve, assembling up returning only valve according to shown in Fig. 4 before using.
Two fluid grouting device feature make use of bored grouting sealing sleeve pipe 6 to use as a road feed pipe for mortar.Concrete structure is shown in shown in accompanying drawing 2.In slip casting, pipe is connected realization by sealing flange I 3 with high pressure valve 4 with the airtight of slip casting outer tube.Therefore slip casting inner and outer pipes all forms pipeline liquid injecting device, for slip casting is given security.
Two fluid grouting device operating principle
A liquid is entered in slip casting by grouting pump high-pressure rubber pipe and high-pressure rubber hose coupling I 1 and manages, and sprays from ejector 10; B liquid enters into slip casting outer tube by grouting pump high-pressure rubber pipe and high-pressure rubber hose coupling II 13, run in sealing sleeve pipe 6 and arrive boring open-hole section, A, B two kinds of slurries are pushed at the bottom of hole and enter into rock fracture after the mixing of ejector 10 position, thus reach the object of shutoff containing water producing fractures.Therefore in the present invention, the mixed running section of A, B slurries is only the distance of Karst Fissures at the bottom of ejector 10 to hole.
For preventing two slurries in slip casting to flow backwards in sealing sleeve pipe 6 mixing, arranges back only valve respectively in two cover grout pipe lines, the effect of returning only valve only allows slurries to flow in holing, and block backflow phenomenon, ensure that the safety of grouting pipeline and grouting equipment.
As shown in figures 1-8, down-hole two fluid grouting technique, comprises the following steps:
A. first to construct inlet well, according to " mine geological hazards specifies " the 98 article of regulation to water-baffling sleeve length of tube, be drilled into drilling depth and exceed sealing sleeve pipe specific length 1.0m place, then sealing sleeve pipe 6 is entered under in boring, and with portland cement or sulphate aluminium cement, sealing is carried out to the annular gap between sealing sleeve pipe 6 and boring, form material for sealing;
B. after material for sealing waits solidifying 8-10 hour, enter drill bit under in sealing sleeve pipe 6 and sweep the material for sealing only remained in sealing sleeve pipe 6, the cleaning bottom of hole degree of depth will exceed sealing sleeve pipe 6 bottom 0.5m, and this 0.50m is open-hole section, and rinses well in sealing sleeve pipe 6 and open-hole section with clear water.
C. be connected with sealing flange I 3 at sealing sleeve pipe 6 welded flange II 5 suitable for reading, welded flange II 5 connection high pressure valve 4, high pressure valve 4, sealing flange I 3 is connected with short tube I 2 by seal nipple 20, short tube I 2 is provided with back only valve I 14, and short tube I 2 is connected with high-pressure rubber hose coupling I 1.
D. withstand voltage test, with grouting pump through above-mentioned structure to injected clear water in sealing sleeve pipe 6, along with the increase of injected water volume, because sealing sleeve pipe 6 is closed systems, clear water in sleeve pipe is compressed, pressure values can increase gradually, until the pressure values of grouting pump pressure meter display reaches sealing sleeve pipe 6 sealing design pressure (be generally the residing horizontal absolute altitude place of boring disclose 2.5 times of aquifer hydraulic pressure value);
E. withstand voltage test qualified after, unload sealing flange I 3 successively, return only valve I 14, short tube I 2 and high-pressure rubber hose coupling I 1, and open high pressure valve 4, drill bit and drilling rod 7 is entered under in sealing sleeve pipe 6, continue probing, until disclose containing permeable structure, till there is larger water yield in boring, and record the water burst degree of depth;
F. on high pressure valve 4, again connect sealing flange I 3 successively, return only valve I 14, short tube I 2 and high-pressure rubber hose coupling I 1, use container or water flowmeter to measure water yield in the boring unit interval respectively, go out actual hydraulic pressure value by gauge measurement;
G. UNICOM's test: be connected high-pressure rubber hose coupling I 1 to high pressure valve 4 with high-voltage tube by grouting pump, open high pressure valve 4, the Portland cement slurry be stirred is injected in sealing sleeve pipe 6, the cement paste if underground gushing water point is gushed out and relatively seriously (get water sample containing cement paste with container at issue, when after precipitation, cement precipitation capacity volume accounts for 1/4 of volume of water sample, be considered as more serious), then prove to possess the condition that two fluid grouting is implemented in down-hole, calculating beginning slip casting is the running pulp time to the time of cement paste of gushing out; If running pulp or running pulp are not slightly, directly inject single liquid cement grout and can reach grouting for water blocking effect;
2) enforcement of two fluid grouting technique
A. measure pump value, owing to being down-hole two fluid grouting, needing choice for use two grouting pumps or use a Double-liquid mud-injection pump, selecting two grouting pumps, then need the pump value of each gear measuring two grouting pumps; Use a Double-liquid mud-injection pump, then need the pump value of two cylinders measuring the different slurries of conveying respectively;
B. respectively bi-material is mixed with the slurries of variable concentrations at underground grouting scene, and measures its concentration;
C. two kinds of mixed setting times of slurries and set strength under many group different parameters is made respectively according to different pump value and different concentration of slurry values, and record respectively;
D. according to running pulp time and two kinds of mixed setting times of slurries of single liquid cement paste, after selecting optimum grouting parameter i.e. two kinds of slurries mixing, its setting time is less than the data of running pulp time, and the intensity of mixing after coagulation reaches and can not be broken up by flowing water;
E. according to the unit injection rate of the optimum grouting parameter of the two kinds of slurries determined in boring open-hole aperture and abovementioned steps d, calculate the distance that when reaching best setting time, slurries run in boring, this distance is the ejector 10 be arranged in boring and arrives the distance containing water producing fractures;
F. according to the distance calculated in step e, drilling rod 7 and ejector 10 are connected, and drilling rod 7 front end is connected on sealing flange I 3, require that all junctions must tight No leakage.
G. two grouting pumps are connected with high-pressure rubber hose coupling I 1 and high-pressure rubber hose coupling II 13 respectively by high-pressure rubber pipe;
H. according to the optimum grouting parameter that step b, c, d determine, make two kinds of required concentration of slurry respectively at the scene, and by optimum grouting parameter, grouting pump is arranged on corresponding gear;
I. the first grouting pump connecting high-pressure rubber hose coupling 13 is first opened, according in selected optimum grouting parameter to the unit interval injection rate of B liquid and pump amount (measurement unit is L/min), in sealing sleeve pipe 6 and boring, B liquid is injected by the first grouting pump, the manometric registration of record pump amount now and the first grouting pump, is and starts pump amount when noting B liquid and force value.
J. along with slip casting is carried out, when equaling sealing sleeve pipe 6 volume and open-hole section borehole volume sum through calculating B liquid injection rate, open the second grouting pump, the unit interval injection rate to A liquid required according to selected optimum grouting parameter and pump amount (measurement unit is L/min), carrying A liquid to pass through high-pressure rubber hose coupling I 1, short tube I 2, seal nipple 20, drilling rod 7 from the nozzle of ejector 10 by the second grouting pump is that jet-like sprays, and the manometric registration of record pump amount now and the second grouting pump, be and start pump amount when noting A liquid and force value.
K.A liquid mixes in ejector 10 position with B liquid, and under the promotion of the first grouting pump and the second grouting pump two grouting pump power, running containing in water producing fractures in the country rock that boring discloses, mixed two kinds of slurries are in operation chemically reactive condensing gradually, colloidal is condensed into gradually by liquid, finally form the solid of some strength, colloidal and solid shape mixed material enter into containing water producing fractures, play plugging function.
L. after slip casting starts, observe manometric registration situation of change on two grouting pumps respectively at any time, observe water yield change and the variation of water of issue.Slip casting can be terminated in two kinds of situation: one is when pressure meter registration reaches slip casting ending standard (being generally the 1.5-2.0 of the pressure values of head height in aquifer, absolute altitude place residing for drilling orifice doubly), be taken up in order of priority closedown second grouting pump and the first grouting pump, stop slip casting.Two is when finding that issue water yield obviously reduce even no longer water burst, although or water yield reduce, reduce to when no longer reducing to a certain degree, stop slip casting.
Two fluid grouting process chart as shown in Figure 1.
Two fluid grouting operating procedure
Key technology of the invention process is the selection to entering position under the dual slurry mixing calculating of after coagulation time and interior pipe are in boring.Depth location in interior Guan Kong is calculated by the mixed setting time of dual slurry to be determined.
By two kinds of slurries grouting pump pump amounts, select the proportioning parameter of two kinds of slurries.Carry out the setting test of biliquid proportioning at the scene, obtain the grout cures time under different pump amount proportioning parameter and consolidating strength respectively, the comparatively ideal proportioning parameter of Selection radio.
According to the setting time in desirable proportioning parameter, inner and outer pipes length, boring aperture and unit volume, calculate the flowing velocity of slurries in boring under ideal parameters, thus the distance run in the unit interval after calculating the interior two kinds of slurries mixing of boring.So just can find suitable biliquid hybrid position, namely the position of pipe inspection device in, namely mix rear slurry and do not solidify the operation be under flow regime, optimum position is in initial set state at slurries, being pushed out boring when having semi-fluid condition enters into containing water producing fractures, reaches best water plugging effect.
The invention process main points and points for attention
(1) before enforcement two fluid grouting, the degree of depth, water yield and hydraulic pressure that must verify holes contains water producing fractures.
(2) the sealing quality of slip casting sleeve pipe must be ensured.When ensureing to implement slip casting under elevated pressure conditions, crag leakproof, sealing sleeve pipe (6) are without being pulled out phenomenon.
(3) after two fluid grouting device connects, pressure testing test be carried out, ensure slip casting leakproof under design pressure.
(4) calculate the interior pipe degree of depth and want prudent, environment temperature, injecting paste material quality, mixed slurries rheological property and mixed setting time must be considered.
(5) for preventing slip casting accident generation plug-hole event, require injector locations to be located at Rock Mass Stability and complete place.Ejector is forbidden to be placed in soft, the easy expansive stratum of water suction.
(6) before connection biliquid blender, the setting test of biliquid proportioning to be carried out at the scene, the setting time of biliquid and set strength in simulated field environment.Select comparatively ideal Solidification Parameters.Each slip casting can only according to the proportioning parameter under same batch material and equivalent environment.Therefore to try one's best before construction and once prepare enough injecting paste material.
Specific embodiment:
Scene is described below with cement-sodium silicate (C-S) biliquid proportioning setting test situation:
In the Water outburst treatment of new giant dragon mining industry Co., Ltd Fu Er great lane, use traditional two fluid grouting technique to be difficult to carry out.Because the inlet well of construction comparatively dark (major part boring is more than 60m), when adopting traditional double liquid grout technique slip casting, cause mixed slurries also not have enough time to enter into containing water producing fractures in boring, just occur solidification phenomenon, thus plug-hole accident when causing slip casting.For Fu Er great lane water burst feature, select cement-water-clay system, the proportioning test under not only having done normal temperature at the scene under (25 DEG C).Also expand temperature environment, test setting time and the intensity of the cement-silicate bi-material under 35 DEG C and 50 DEG C of different temperatures respectively, and actual according to scene boring, carry out slip casting feasibility analysis.Be applied to practice, respond well.
Testing circumstance simulation and Material selec-tion:
For making this result of the test have directiveness to this water blockoff, test is accomplished with site environment close respectively in slip casting temperature, Material selec-tion and biliquid proportioning parameter etc. three as far as possible.
1. select respectively to carry out under several temperature environment such as 25 DEG C (normal temperature), 35 DEG C and 50 DEG C in environment temperature.Because on-the-spot dual slurry slurries use the water glass under normal-temperature water and normal temperature to prepare, research biliquid proportioning is at normal temperatures needed to solidify result.Need after slurries mixing to run in boring, the slurries under normal temperature are heated by the water in hole and crag in running in boring, can be heated rapidly after entering crack.Therefore the course of conveying of slurries is exactly progressively by the process of heating.Therefore simulate three temperature to test targetedly respectively.
2. Material selec-tion: be guarantee test result closing to reality more, chooses on-the-spot cement and water glass respectively.Cement adopts on-the-spot grouting complex silicate cement PC 32.5R.According to the set strength after C-S dual slurry slip casting experience in the past, on-the-spot ability with slurry and material solidification, in test, cement paste is made into 1.4g/cm3,1.5g/cm3 and 1.6g/cm3 tri-kinds of density respectively.Water glass is extracted the magma in mine water glass jar and the water glass slurries after diluting with clear water respectively.Magma density 1.35g/cm
3, mother-in-law U.S. degree 37; Dilution density 1.07g/cm
3, mother-in-law U.S. degree 10.
Result of the test:
Shown in biliquid proportioning solidification experiments result following table under different temperatures, different cement slurry density and different conditions of mixture ratios.In table, in data, ratio value is cement: water glass (volume ratios of slurries).
Table 1 C-S biliquid proportioning solidification experiments result
The comparative analysis of result of the test
1. different serum density proportioning test result under normal temperature
At normal temperatures, having done cement slurry density is respectively 1.6g/cm
3, water glass serum density is respectively 1.35g/cm
3and 1.07g/cm
3proportioning test, its result is respectively in shown in table 1 and Fig. 5.
As can be seen from table 1 data, along with the increase of C:S numerical value (i.e. cement paste and water glass volume of slurry ratio) ratio, its setting time shortens.When ratio is less than 1, along with the increase of water glass relative volume, its setting time extends.On initial setting strength, C:S value is greater than under 6:1 and C:S value is less than 1:5 situation, and its consolidation strength significantly reduces than the sample consolidation strength of other ratio.On apparent, be even soybean residue body shape respectively in jelly.Although g., jelly-like solid has certain intensity after 5 hours, be highly brittle, resistance to compression is anti-, and to subtract intensity less.Bean curd scoriform induration is still without any intensity, and syneresis rate is larger.Ratio is larger and ratio is less, and soybean residue proterties is more serious.C-S biliquid is described only within certain ratio range, its initial setting time and initial setting strength are just applicable to grouting for water blocking.Experiment display, at cement slurry density 1.4-1.6g/cm
3between, wherein, the best ratio range of initial setting strength is 1:1,2:1,3:1 to 4:1.These ratios in flow regime, quick solidification.Substantially the apparent of flowing is remained.
Use density is 1.07g/cm
3water glass (10Be) proportioning result shows, initial setting time is more a lot of than using the water glass of 37Be to extend, be respectively the condition of 2:1 and 4:1 at C:S under, setting time is respectively 608S and 1808S, and in bean curd scoriform, test block is dispersed soon and fallen by water dilution in water.
Conclusion: under cement slurry density and the certain condition of environment temperature, along with the minimizing of water glass volume, setting time shortens, and initial setting strength reduces; When water glass slurry dilution, to time very low, (this experiment is 1.07g/cm
3), under identical proportioning, setting time is that numerical digit level increases, and intensity sharply declines.Water glass relative volume is being increased to a certain degree, and its setting rate also becomes very slow, and intensity sharply declines.
In this test, at concentration of sodium silicate with when adding given volume, cement slurry density is larger, and the initial setting time is shorter, and the consolidation strength of sample is higher.
2. variations in temperature is on the impact of result of the test
As can be seen from Table 1, the setting time impact of change on dual slurry of temperature is larger.1.6g/cm is all at cement slurry density
3condition under, under identical proportioning, 35 DEG C of environment pilot scale block setting times significantly shorten; Same at 35 DEG C with under identical conditions of mixture ratios, along with cement slurry density increases, setting time shortening.The change of its setting time as shown in Figure 6.
Under use 10Be water glass condition, temperature on the impact of setting time respectively in shown in table 2 and Fig. 7.
Although the initial setting time sharply reduces, consolidation strength during initial set is very little, in bean curd scoriform, does not solidify for a long time.
Table 2 scene uses dilution water glass (10Be) 25 DEG C and 50 DEG C of initial setting time deck watch
| C:S value | 25 DEG C of condition lower initial setting times | 50 DEG C of condition lower initial setting times |
| 1:1 | 28.5 seconds | |
| 2:1 | 10 points 8 seconds | 7.2 second |
| 4:1 | 30 points 8 seconds | 5.1 second |
| 6:1 | Be greater than 1 hour | 4.72 second |
As can be seen from this experiment, the initial setting time impact of environment temperature on dual slurry is very large.
3. cement paste change in concentration is on the impact of setting time
At temperature and the certain condition of proportioning, the C-S slurries initial setting time raises with cement grout density and shortens; Refer to shown in table 1 and Fig. 8;
4. concentration of sodium silicate is on the impact of setting time
Under normal temperature, under the condition of the identical proportioning of C:S, after dilution, water glass slurries (10Be) obviously can extend the initial setting time, and the initial setting time increases with C:S ratio and increases; As shown in Table 3 below.But under (50 DEG C) higher temperatures effect, the initial setting time shortens greatly than under normal temperature, and reduce than increasing with cement-silicate.
Table 3 37Be water glass and 10Be water glass initial setting time contrast table
| C:S value | The 37Be water glass test initial setting time | The 10Be water glass test initial setting time |
| 1:1 | 38 seconds | 28.5 seconds |
| 2:1 | 24 seconds | 10 points 8 seconds |
| 4:1 | 14 seconds | 30 points 8 seconds |
5. this test Main Conclusions:
Universal law is: when other conditions are identical, cement slurry density is larger, the initial setting time and initial setting strength higher; Concentration of sodium silicate is less, and the initial setting time is less, and after concentration of sodium silicate drops to certain value, the initial setting time will become very long; Under the condition that bi-material concentration is identical, C:S value is larger, and the initial setting time is shorter, but when ratio is greater than 6:1 and is less than 1:5, the intensity of its induration reduces along with the increase of ratio or minimizing.The initial setting time impact of environment temperature on biliquid is comparatively large, and temperature is higher, and the initial setting time is shorter.
The C-S dual slurry initial setting time raises along with temperature and shortens (shown in table 2), when temperature is elevated to 35 DEG C, the initial setting time is shorter, generally within 30S, when temperature is elevated to 50 DEG C (roadway surrounding rock temperature), the initial setting time is within 7S.
6. scene, Fu Er great lane note C-S dual slurry feasibility analysis
Can the on-the-spot shutoff noted dual slurry and realize Fu Er great lane top board trickle, need to consider from aspects such as the safeties of the control of the on-the-spot proportioning implementing ability of slurries, cement grout density, infusion time and the selection in initial setting time, mixed slurry intensity and perfusion.
To above-mentioned result of the test data, according to 4-6 drilling situation, in 4-6 boring, carry out two fluid grouting.
Critical data during 4-6 boring enforcement two fluid grouting is calculated as follows;
1. ejector 10 is selected to the calculating and grouting pump amount containing water producing fractures distance
According to on-the-spot biliquid proportioning setting test result, test the running pulp time determined in conjunction with UNICOM, have selected optimal proportion parameter, namely use PC 32.5R cement slurry density to be 1.6g/cm
3, water glass density is 1.35g/cm
3, when C:S (cement: water glass volume ratio) is for 1:1, two kinds of mixed best setting times of slurries are 38s, in table 1.Now during two fluid grouting, no matter mixed serum is that initial setting time or set strength can meet slip casting requirement.Therefore the 38s time is cement-silicate biliquid and enters Best Times containing water producing fractures after the mixing of ejector 10 position.
Grouting pump pump amount: employ two identical grouting pumps, through scene to the measurement of pump amount, grouting pump is totally three gears, corresponding pump amount is respectively 30L/min, 80L/min, 120L/min from low to high.
Cement-silicate slurries unit injection rate when open-hole Duan Xianghan water producing fractures runs after the mixing of ejector 10 position is now two pump pump amount sums.Then the while of dual slurry, injection rate is respectively 60L/min, 160L/min and 240L/min.
Ejector to the distance containing water producing fractures should be: best setting time (min) × pump amount (L/min)/open-hole section boring unit volume.
Therefore open-hole section boring unit volume be 3.31/m, pump amount is according to 1; 1 ratio slip casting, the distance run in open-hole section after two kinds of slurries mixing is calculated as respectively: 11.50m, 30.70m, 46m.
Therefore ejector 10 can be selected to arrive the distance containing water producing fractures according to 4-6 drilling depth (for 63.70m).Have selected the proportioning pump amount of two pumps in slip casting simultaneously.Calculate according to 4-6 boring, select this distance for 11.50m, the proportioning pump amount of two grouting pumps is 30L/min.
2. start priming petock glass pulp to how long opening grouting pump 1 after grouting pump 2 cement injection slurries, Time Calculation is selected as follows:
Grouting pump pump amount is respectively 30L/min, 80L/min, 120L/min according to 1..
Slurries transfer pipeline volume calculations: cement paste slurries enter in sealing sleeve pipe 6 through pressure duct (comprise high-pressure rubber pipe, high-pressure rubber hose coupling II 13, return only valve II 12 and short tube II 11), when running to injector locations, the total measurement (volume) of path spacing of process.Therefore the volume of cement grout transfer pipeline be pressure duct, the volume sum of annular gap between the boring of annular gap between sealing sleeve pipe 6 and drilling rod 7, open-hole section and drilling rod 7.
Design formulas is: Q=Q1+Q2+Q3 (1)
Q:B liquid from grouting pump arrive ejector total measurement (volume) through path;
Q1: the volume of pressure duct;
Q2: the volume of annular gap between sealing sleeve pipe 6 and drilling rod 7;
Q3: the volume of annular gap between the boring of open-hole section and drilling rod 7
Calculate respectively according to boring can be noted at present:
Calculate according to 4-6 boring
Q＝0.5(l/m)×8(m)+5(l/m)×12(m)+3.3(l/m)×40(m)＝196l
Running time after slurries mixing in pipeline calculates:
Time Calculation formula: t=Q/q (2)
The running time of t:B liquid in pipeline; Q: pump amount
Then under three kinds of pump amounts, the infusion time in 4-6 boring is respectively:
When pump amount is 30L/min: 196/30=6.5min.
When pump amount is 80L/min: 196/80=2.45min
When pump amount is 120L/min: 196/120=1.63min
Conclusion: according to above-mentioned 1., 2. relevant calculation, in 4-6 boring, have selected ejector 10 to the distance containing water producing fractures is 11.50m, the charge pump amount of the cement-silicate slurries adopted is 30L/min, after grouting pump 2 starts grout injection 6.5min, open grouting pump 1 priming petock glass pulp again, after 38s, mixed serum starts to solidify, and enters into containing water producing fractures, thus reach best slip casting effect, only once grouting water-reducing rate reaches 46.7%.
Claims (3)
1. a down-hole two fluid grouting device, is characterized in that: comprise the interior pipe of the slip casting nested together and slip casting outer tube, in described slip casting, pipe and slip casting outer tube are two independently closed conduits;
In described slip casting, pipe comprises the high-pressure rubber hose coupling I (1), short tube I (2), seal nipple (20), drilling rod (7) and the ejector (10) that are connected successively, and former components is connected to form airtight grouting pipeline; Described short tube I (2) is provided with back only valve I (14);
Described slip casting outer tube comprises sealing sleeve pipe (6), sealing sleeve pipe (6) front end adpting flange II (5), flange II (5) front end connects high pressure valve (4) one end, high pressure valve (4) other end is connected on sealing flange I (3), the center weld of sealing flange I (3) has seal nipple (20), sealing sleeve pipe (6) is upper connects short tube II (11), short tube II (11) is provided with back only valve II (12), and short tube II (11) is connected with high-pressure rubber hose coupling II (13);
During slip casting, comprise two parts:
1), preparation and judge whether to possess slip casting condition:
A. first to construct inlet well, according to " mine geological hazards specifies " the 98 article of regulation to water-baffling sleeve length of tube, be drilled into drilling depth and exceed sealing sleeve pipe specific length 1.0m place, then sealing sleeve pipe (6) is entered under in boring, and with portland cement or sulphate aluminium cement, sealing is carried out to the annular gap between sealing sleeve pipe (6) and boring, form material for sealing;
B. after material for sealing waits solidifying 8-10 hour, enter drill bit under in sealing sleeve pipe (6) and sweep the material for sealing only remained in sealing sleeve pipe (6), the cleaning bottom of hole degree of depth will exceed sealing sleeve pipe (6) bottom 0.5m, this 0.50m is open-hole section, and rinses well in sealing sleeve pipe (6) and open-hole section with clear water;
C. be connected with sealing flange I (3) at sealing sleeve pipe (6) welded flange II (5) suitable for reading, welded flange II (5) connection high pressure valve (4), high pressure valve (4), sealing flange I (3) is connected with short tube I (2) by seal nipple (20), short tube I (2) is provided with back only valve I (14), and short tube I (2) is connected with high-pressure rubber hose coupling I (1);
D. withstand voltage test, with grouting pump to sealing sleeve pipe (6) interior injected clear water, along with the increase of injected water volume, because sealing sleeve pipe (6) is closed system, clear water in sleeve pipe is compressed, pressure values can increase gradually, until the pressure values of grouting pump pressure meter display reaches sealing sleeve pipe (6) sealing design pressure;
E. withstand voltage test qualified after, unload sealing flange I (3) successively, return only valve I (14), short tube I (2) and high-pressure rubber hose coupling I (1), and open high pressure valve (4), drill bit and drilling rod is entered under in sealing sleeve pipe (6), continue probing, until disclose containing permeable structure, till there is larger water yield in boring, and record the water burst degree of depth;
F. on high pressure valve (4), again connect sealing flange I (3) successively, return only valve I (14), short tube I (2) and high-pressure rubber hose coupling I (1), use container or water flowmeter to measure water yield in the boring unit interval respectively, go out actual hydraulic pressure value by gauge measurement;
G. UNICOM's test: be connected high-pressure rubber hose coupling I (1) to high pressure valve (4) with high-voltage tube by grouting pump, open high pressure valve (4), the Portland cement slurry be stirred is injected in sealing sleeve pipe (6), the cement paste if underground gushing water point is gushed out and more serious, then prove to possess the condition that two fluid grouting is implemented in down-hole, calculating beginning slip casting is the running pulp time to the time of cement paste of gushing out; If running pulp or running pulp are not slightly, directly inject single liquid cement grout and can reach grouting for water blocking effect;
2) enforcement of two fluid grouting technique
A. measure pump value, owing to being down-hole two fluid grouting, needing choice for use two grouting pumps or use a Double-liquid mud-injection pump, selecting two grouting pumps, then need the pump value of each gear measuring two grouting pumps; Use a Double-liquid mud-injection pump, then need the pump value of two cylinders measuring the different slurries of conveying respectively;
B. respectively bi-material is mixed with the slurries of variable concentrations at underground grouting scene, and measures its concentration;
C. two kinds of mixed setting times of slurries and set strength under many group different parameters is made respectively according to different pump value and different concentration of slurry values, and record respectively;
D. according to running pulp time and two kinds of mixed setting times of slurries of single liquid cement paste, after selecting optimum grouting parameter i.e. two kinds of slurries mixing, its setting time is less than the data of running pulp time, and the intensity of mixing after coagulation reaches and can not be broken up by flowing water;
E. according to the unit injection rate of the optimum grouting parameter of the two kinds of slurries determined in boring open-hole aperture and abovementioned steps d, calculate the distance that when reaching best setting time, slurries run in boring, this distance is the ejector (10) be arranged in boring and arrives the distance containing water producing fractures;
F. according to the distance calculated in step e, drilling rod (7) and ejector (10) are connected, and drilling rod (7) front end is connected on sealing flange I (3), require the necessary closely No leakage in all junctions;
G. two grouting pumps are connected with high-pressure rubber hose coupling I (1) and high-pressure rubber hose coupling II (13) respectively by high-pressure rubber pipe;
H. according to the optimum grouting parameter that step b, c, d determine, make two kinds of required concentration of slurry respectively at the scene, and by optimum grouting parameter, grouting pump is arranged on corresponding gear;
I. the first grouting pump connecting high-pressure rubber hose coupling II (13) is first opened, according in selected optimum grouting parameter to the unit interval injection rate of B liquid and pump amount, measurement unit is L/min, in sealing sleeve pipe (6) and boring, B liquid is injected by the first grouting pump, the manometric registration of record pump amount now and the first grouting pump, is and starts pump amount when noting B liquid and force value;
J. along with slip casting is carried out, when equaling sealing sleeve pipe (6) volume and open-hole section borehole volume sum through calculating B liquid injection rate, open the second grouting pump, the unit interval injection rate to A liquid required according to selected optimum grouting parameter and pump amount, measurement unit is L/min, carry A liquid by high-pressure rubber hose coupling I (1) by the second grouting pump, short tube I (2), seal nipple (20), drilling rod (7) is jet-like ejection from the nozzle of ejector (10), and record pump amount now and the manometric registration of the second grouting pump, be and start pump amount when noting A liquid and force value,
K.A liquid mixes in ejector (10) position with B liquid, and under the promotion of the first grouting pump and the second grouting pump two grouting pump power, running containing in water producing fractures in the country rock that boring discloses, mixed two kinds of slurries are in operation chemically reactive condensing gradually, colloidal is condensed into gradually by liquid, finally form solid, colloidal and solid shape mixed material enter into containing water producing fractures, play plugging function;
L. after slip casting starts, observe manometric registration situation of change on two grouting pumps respectively at any time, observe water yield change and the variation of water of issue; Can slip casting be terminated in two kinds of situation: one is when pressure meter registration reaches the 1.5-2.0 times of the pressure values of head height in aquifer, absolute altitude place residing for slip casting ending standard and drilling orifice, successively closes the second grouting pump and the first grouting pump, stop slip casting; Two is when finding that issue water yield obviously reduce even no longer water burst, although or water yield reduce, reduce to when no longer reducing to a certain degree, stop slip casting.
2. down-hole according to claim 1 two fluid grouting device, it is characterized in that: stop valve I described time and comprise the upper valve body (15) and lower valve body (18) that are connected, stepped cavity is provided with in upper and lower valve body, spring base (19) is provided with in stepped cavity, upper linking springs (17) one end of spring base (19), spring (17) other end withstands on steel ball (16).
3. down-hole according to claim 1 two fluid grouting device, it is characterized in that: stop valve II described time and comprise the upper valve body (15) and lower valve body (18) that are connected, stepped cavity is provided with in upper and lower valve body, spring base (19) is provided with in stepped cavity, upper linking springs (17) one end of spring base (19), spring (17) other end withstands on steel ball (16).
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| CN112814598B (en) * | 2021-03-10 | 2024-08-20 | 东营市德慧机电设备有限公司 | Grouting device for well drilling |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201133248Y (en) * | 2007-12-29 | 2008-10-15 | 中铁隧道集团有限公司 | Orifice sealed double tube back type grouting device |
| CN201513182U (en) * | 2009-10-09 | 2010-06-23 | 中铁二局股份有限公司 | Broken rock advance curtain grouting double-channel sectional grouting device |
| CN201521269U (en) * | 2009-10-19 | 2010-07-07 | 扬州市驰城石油机械有限公司 | Valve assembly of sleeve grouting circulation unfreezing device |
| CN101768974A (en) * | 2009-12-29 | 2010-07-07 | 中铁隧道集团有限公司 | Method and device for grouting in hole and effectively stopping grout |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001164896A (en) * | 1999-12-08 | 2001-06-19 | Kumagai Gumi Co Ltd | Water stop method for concrete placing joint in direct concrete placing method |
| JP2003026462A (en) * | 2001-07-17 | 2003-01-29 | Nippon Chem Ind Co Ltd | Civil engineering material and construction thereof |
| CN101255799A (en) * | 2008-04-18 | 2008-09-03 | 上海市第二市政工程有限公司 | Tunnel inner micro-destabilization slip-casting technique |
-
2010
- 2010-12-14 CN CN201210131874.1A patent/CN102852535B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201133248Y (en) * | 2007-12-29 | 2008-10-15 | 中铁隧道集团有限公司 | Orifice sealed double tube back type grouting device |
| CN201513182U (en) * | 2009-10-09 | 2010-06-23 | 中铁二局股份有限公司 | Broken rock advance curtain grouting double-channel sectional grouting device |
| CN201521269U (en) * | 2009-10-19 | 2010-07-07 | 扬州市驰城石油机械有限公司 | Valve assembly of sleeve grouting circulation unfreezing device |
| CN101768974A (en) * | 2009-12-29 | 2010-07-07 | 中铁隧道集团有限公司 | Method and device for grouting in hole and effectively stopping grout |
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