CN102912795B - Device and method for stopping leakage by grouting low-heat asphalt - Google Patents
Device and method for stopping leakage by grouting low-heat asphalt Download PDFInfo
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- CN102912795B CN102912795B CN201210437748.9A CN201210437748A CN102912795B CN 102912795 B CN102912795 B CN 102912795B CN 201210437748 A CN201210437748 A CN 201210437748A CN 102912795 B CN102912795 B CN 102912795B
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Abstract
Disclosed are a device and a method for stopping leakage by grouting low-heat asphalt. A water outlet end of a boiler and water heating system is connected with a water inlet end of a water suction pump, and a water outlet end of the water suction pump is connected with a feeding port of a stirring slurry producer through an asphalt insulating pipe I; a discharging end of an asphalt barrel removing heating system is connected with a feeding end of an asphalt pump, and a discharging end of the asphalt pump is connected with a feeding end of the stirring slurry producer through an asphalt insulating pipe II; and a discharging port at the bottom of the stirring slurry producer is connected with a thermal insulation grouting hopper through a thermal insulation sluice valve, the thermal insulation grouting hopper is further connected with a feeding port of a screw pump, a discharging port of the screw pump is connected with an asphalt insulation grouting pipe stretching into the interior of a grouting hole, one end of a thermal insulation slurry return pipe is connected with the asphalt insulation grouting pipe, and the other end is connected with the thermal insulation grouting hopper. The device and the method for stopping leakage by grouting low heat asphalt have the advantages of being reliable in construction effect, good in security, high in construction efficiency and low in cost, and can be widely applied in seepage-proofing and leakage stopping projects of various submerged buildings and foundations, tunnels, bridge piers, cofferdams, karsts and the like.
Description
Technical field
The present invention relates to the based process technical field of geotechnical engineering, particularly a kind of for large leakage quantity, the karst of high flow rate or the Apparatus and method for of built on stilts stratum asphalt grouting leak stopping.
Background technology
Grouting leak-stopping under different opening, different in flow rate need to adopt different grouting agents, and different materials must adopt different grouting equipment and technique again., 0.5m/s flow velocity following for aperture 50cm can adopt the modes such as cement underflow, mortar, low grading concrete, cement-sodium silicate and rapid hardening cream slurry to carry out with sub-surface leak stopping, had than more complete technology at present.But the karst leak stopping for larger opening and flow velocity does not have specific aim, effective especially grouting agent, this stratum is that slurries should have good mobility and concrete castability to the requirement of material, and guaranteeing that the slurries that pour into are not all washed away by water and have suitable shock strength within a short period of time and have certain range of scatter, this is also that anti-seeping grouting is successfully crucial.The characteristic of pitch can meet this requirement substantially, but it is very high to the requirement of temperature, also there is no at present effective asphalt grouting equipment, makes the application of asphalt grouting be subject to very big restriction.
The cardinal principle of asphalt grouting is: pitch does not dissolve each other with water, when pitch is heated to form liquid state, pitch slurries have good mobility and concrete castability, pitch slurries enter seepage place by grout pump, meet water will be progressively cooling, solidify, and top layer by water dilution, break up, inner pitch still has suitable mobility, be conducive to the diffusion of slurries, so pitch has good sealing characteristics.At present pitch apply main employing heated bitumen in grouting leak-stopping engineering, and, more than asphalt heating to 150 ℃, grouting equipment is also comparatively simple, and what have even directly uses open firing, and efficiency is low, waste energy and contaminated environment, and continuity is poor.As early 1980s, the heated bitumen application that succeeds in the dam, lower Bake of the U.S. and Canadian Stewart Wei Er dam grouting works, 20 end of the centurys are again successively in the German application of succeeding in than lattice dam, Brazilian Ya Bulu dam and some mines, tunnel shutoff.Domestic also priority has been applied asphalt grouting technology in the upstream cofferdam antiseepage of power station, Li Jia gorge, the grouting of lock gate pier shrinkage joint, mountain, screen-like mountain peak, Jiangsu, flower scenery with hills and waters Hydropower Station Diversion Tunnels leak stopping and seepage control for rock-earth cofferdam of Gongboxia Hydropower Station engineering.But because asphalt grouting needs heating, (heating-up temperature is more than 150 ℃, construction working temperature is more than 120 ℃), slurry material viscosity is large, temperature sensitivity is high, working procedure is many, complex process, there is no special-purpose heated bitumen grouting equipment, make the poor controllability of filling process, hard pitch threatens the reasons such as larger to construction safety, directly limited development and the application of asphalt grouting technology, current domestic asphalt grouting technical level still rests on eighties of last century.
Summary of the invention
The invention provides a kind of Apparatus and method for of low-heat asphalt grouting leak stopping, solve existing asphalt grouting technology, particularly for the karst of large leakage quantity, high flow rate or the grouting leak-stopping on built on stilts stratum without special-purpose grouting equipment, filling process poor controllability, hard pitch to construction safety threaten large, efficiency of construction is low, the technical problem of poor continuity.
The technical solution adopted for the present invention to solve the technical problems is:
The equipment of this low-heat asphalt grouting leak stopping, comprises boiler and hydrothermal system, asphalt barrel removing heating system, suction pump, bitumenpump, stirring pulping machine, asphalt thermal insulation pipe I, asphalt thermal insulation pipe II, heat insulation gate valve, insulation grouting bucket, screw pump, asphalt thermal insulation grout pipe and insulation return pipe;
The water side of described boiler and hydrothermal system is connected with the water intake end of suction pump, and the water side of suction pump is connected with the feeding mouth of stirring pulping machine through asphalt thermal insulation pipe I;
The discharge end of described asphalt barrel removing heating system is connected with the feeding end of bitumenpump, and the discharge end of bitumenpump is connected with the feeding end of stirring pulping machine through asphalt thermal insulation pipe II;
The discharging opening of described stirring pulping motor spindle is connected with insulation grouting bucket through heat insulation gate valve, insulation grouting bucket is connected with the feeding mouth of screw pump again, the discharging opening of screw pump is connected with the asphalt thermal insulation grout pipe that passes into grout hole inside, insulation return pipe one end is connected with asphalt thermal insulation grout pipe, and the other end is connected with insulation grouting bucket.
Described boiler and hydrothermal system comprise combustor, boiler, circulation pump, heat-conducting oil pipes I and water tank, and combustor is connected with boiler, and heat-conducting oil pipes I one end is connected with boiler, and the other end stretches into and be arranged in water tank inside, on heat-conducting oil pipes I, is connected with circulation pump.
Described asphalt barrel removing heating system comprises electric hoist, de-bucket storehouse, heat-conducting oil pipes II and superconducting pipe, in the frame of electric hoist, suspention is useful on the electric block that promotes bottled asphalt, heat-conducting oil pipes II around and be fixed on a de-bucket storehouse inwall, superconducting pipe is vertically fixed on bottom, de-bucket storehouse.
The equipment of described low-heat asphalt grouting leak stopping also comprises for detection of pressure, temperature, controls the control system of relevant device start and stop.
The method of this low-heat asphalt grouting leak stopping, has the following steps:
Step 1, preparation low-heat asphalt grouting material;
A, utilize asphalt barrel removing heating system take off bucket and be heated to 120 ℃ bottled asphalt, after adding paraffin and stirring, by bitumenpump, pump in stirring pulping machine;
B, utilize in boiler and hydrothermal system and heat water to 80 ℃～90 ℃, after adding emulsifier and stirring, by suction pump, pump in stirring pulping machine;
C, by stirring pulping machine stirring at low speed 1～3min, make material form oil-in-water shape mulseal;
D, in stirring pulping machine, add cement, control temperature at 60～80 ℃, stirring at low speed 3～5min, makes oil-in-water shape mulseal part breakdown of emulsion, forms the low heated bitumen of Water-In-Oil shape, obtains low-heat asphalt grouting material;
Step 2, packer grouting from bottom to top,, pulp section at asphalt thermal insulation grout pipe is carried out grout hole inner sealing with mould bag, open heat insulation gate valve, low-heat asphalt grouting material is entered in screw pump by the insulation bucket that is in the milk, with screw pump, low-heat asphalt grouting material is pumped into selected grout compartment by asphalt thermal insulation grout pipe, low-heat asphalt grouting material is under the given grouting pressure effect of pump, progressively diffusion, until diffusion front place pressure is all spaces of zero or complete this grout compartment of shutoff;
Step 3, by asphalt thermal insulation grout pipe, with pulling out a supreme grout compartment on drawbench, repeating step two, until all grout compartments all complete grouting leak-stopping.
Described step 1, raw material composition and the weight portion proportioning of low-heat asphalt grouting material are as follows:
100 parts of pitches;
3～5 parts, paraffin;
120 parts, water;
1～3 part of emulsifier;
30～80 parts of cement.
Described pitch is petroleum bitumen or hydraulic asphalt, and its softening point is between 40～45 ℃; Needle penetration is 60～120, take 0.1mm as unit;
Described emulsifier is to split asphalt emulsifier in cation;
Described cement is Portland cement, and grade of cement is not less than P.O42.5, and the grain fineness D95 of cement is less than 80 μ m.
The density of described low-heat asphalt grouting material is greater than 1.1g/cm
3; In the time of 60 ℃, apparent viscosity is less than 1Pa.s; Construction temperature, below 80 ℃, is met water cooling and is solidified, by water punching, do not released; Within 28 days, unconfined compression strength is greater than 3MPa.
Described step 2 and step 3, carry out two limit control to grouting pressure and slurries injection rate in filling process.
Described step 4, after grouting leak-stopping finishes, closes screw pump, opens insulation return pipe, by pump housing wash cycles screw pump.
Low-heat asphalt grouting equipment of the present invention has following characteristics and beneficial effect:
The present invention applies and develops on grouting leak-stopping for a kind of low-heat bituminous material, has comprised de-bucket, heating from pitch, slurrying (transformation of the preparation of " oil-in-water " pitch and " Water-In-Oil " state of arriving), grouting and the overall process of controlling thereof.Its operating temperature can be controlled at below 80 ℃, the safety puzzlement of avoiding construction at high temperature to cause equipment, personnel etc.
In low-heat asphalt grouting leak stoppers of the present invention: boiler and hydrothermal system can be whole system heating thermal source and slurrying hot water used are provided; De-bucket heating system can be melted barreled fix-bitumen under normal temperature for the good asphaltic liquid of mobility; Water pump, bitumenpump can be delivered to pulping system by the water heating and asphaltic liquid; Stirring pulping machine can also be incubated in slurrying; Grouting bucket, screw pump and grout pipe form grouting system and are in the milk; Control system is for detection of pressure, temperature, control appliance start and stop.
Low-heat asphalt grouting method of the present invention has following characteristics and beneficial effect:
The low-heat asphalt grouting material of the present invention's preparation is that the effective a kind of grouting agent of antiseepage processing is carried out on karst or the built on stilts stratum of large leakage quantity, high flow rate, has filled up the blank in current grouting series material.Compare with heated bitumen grouting, in the situation that leak stopping performance is suitable, the construction temperature of low heated bitumen of the present invention is lower, and working security, reliability and controllability all greatly improve, and construction cost reduces more than 40%.
Boring aperture should meet the requirement of asphalt grouting pipe diameter, and the built on stilts stratum of piece stone need adopt the pore-forming technique that enters retaining wall with pipe bit.
Adopt from bottom to top, the construction technology of packer grouting, can carry out shutoff pointedly to large leakage quantity, high flow passages;
Adopt screw pump to pour into low heated bitumen by the pure pressure type of insulation grout pipe, solved the problem that pumps into of low-heat pitch particle type cement granules, the large discharge capacity that simultaneously screw pump has, the ability of high pressure can effectively improve the anti-current-rush ability of low heated bitumen body, and can improve the diffusion of low heated bitumen in hole, in space;
Hole inner sealing adopts the mode of blocking at grout pipe pulp section grouting mold bag, has solved the difficult problem that low heated bitumen pulls out on the grout pipe that causes of string in hole.
Filling process adopts two limit control technologys of grouting pressure and slurries injection rate, can guarantee that the plugging effect of low heated bitumen is reliable.
The present invention has advantages of that construction effect is reliable, safety good, work efficiency is high, cost is relatively low, can be widely used in the impervious leakage-stopping engineerings such as various submerged structures and basis, tunnel, bridge pier and cofferdam, karst.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is low-heat asphalt grouting leak-stopping technique schematic diagram.
Fig. 2 is the structural representation of boiler and hydrothermal system.
Fig. 3 is the structural representation of Fig. 2 A-A section.
Fig. 4 is the structural representation of asphalt barrel removing heating system.
Fig. 5 is the structural representation of Fig. 4 B-B section.
Fig. 6 is the structural representation of stirring pulping machine and grouting system.
Reference numeral: 1-grout hole, 2-mould bag, 3-asphalt thermal insulation grout pipe, 4-boiler and hydrothermal system, 4.1-combustor, 4.2-boiler, 4.3-circulation pump, 4.4-heat-conducting oil pipes I, 4.5-water tank, 5-suction pump, 6-asphalt barrel removing heating system, 6.1-electric hoist, the de-bucket of 6.2-storehouse, 6.3-heat-conducting oil pipes II, 6.4-superconducting pipe, 7-bitumenpump, 8-stirring pulping machine, 9-asphalt thermal insulation pipe I, 10-asphalt thermal insulation pipe II, 11-heat insulation gate valve, 12-insulation grouting bucket, 13-screw pump, 14-is incubated return pipe.
the specific embodiment
Embodiment is shown in Figure 1, the equipment of this low-heat asphalt grouting leak stopping, comprises boiler and hydrothermal system 4, two asphalt barrel removing heating systems 6, suction pump 5, bitumenpump 7, stirring pulping machine 8, asphalt thermal insulation pipe I9, asphalt thermal insulation pipe II10, heat insulation gate valve 11, insulation grouting bucket 12, screw pump 13, asphalt thermal insulation grout pipe 3 and insulation return pipes 14.The water side of boiler and hydrothermal system 4 is connected with the water intake end of suction pump 5, and the water side of suction pump 5 is connected with the feeding mouth of stirring pulping machine 8 through asphalt thermal insulation pipe I9.The discharge end of asphalt barrel removing heating system 6 is connected with the feeding end of bitumenpump 7, and the discharge end of bitumenpump 7 is connected with the feeding end of stirring pulping machine 8 through asphalt thermal insulation pipe II10.The discharging opening of stirring pulping machine 8 bottoms is connected with insulation grouting bucket 12 through heat insulation gate valve 11, insulation grouting bucket 12 is connected with the feeding mouth of screw pump 13 again, the discharging opening of screw pump 13 is connected with the asphalt thermal insulation grout pipe 3 that passes into grout hole 1 inside, insulation return pipe 14 one end are connected with asphalt thermal insulation grout pipe 3, and the other end is connected with insulation grouting bucket 12.Asphalt thermal insulation grout pipe 3 is provided with the exhausted drainage facility of 500m hydraulic pressure.
The equipment of described low-heat asphalt grouting leak stopping also comprises for detection of pressure, temperature, controls the control system of relevant device start and stop.
Shown in Fig. 2, Fig. 3, boiler and hydrothermal system 4 comprise combustor 4.1, boiler 4.2, circulation pump 4.3, heat-conducting oil pipes I 4.4 and water tank 4.5, combustor 4.1 is connected with boiler 4.2, heat-conducting oil pipes I 4.4 one end are connected with boiler 4.2, the other end stretches into and is arranged in water tank 4.5 inside, is connected with circulation pump 4.3 on heat-conducting oil pipes I 4.4.
Shown in Fig. 4, Fig. 5, asphalt barrel removing heating system 6 comprises electric hoist 6.1, de-bucket storehouse 6.2, heat-conducting oil pipes II 6.3 and superconducting pipe 6.4, in the frame of electric hoist 6.1, suspention is useful on the electric block that promotes bottled asphalt, heat-conducting oil pipes II 6.3 around and be fixed on de-bucket storehouse 6.2 inwalls, superconducting pipe 6.4 is vertically fixed on de-bucket 6.2 bottoms, storehouse.
De-bucket storehouse, water tank adopt heat-conducting oil heating, and can accurately control heating-up temperature, in 1 hour, 800L water, 800L pitch can be heated to respectively to 90 ℃, 120 ℃ from room temperature.
Shown in Figure 6, stirring pulping machine 8 is low-speed mixer.Mixer and grouting bucket adopt the insulation of resistance heated band, and in bucket, temperature can remain on more than 80 ℃, and mixer capacity is not less than 800L, and grouting dipper capacity is 100L; (3) asphalt grouting pipe adopts Resistant heating insulation, and grout pipe temperature can remain on more than 80 ℃; (4) grout pump is selected screw pump, and while pouring into low heated bitumen, discharge capacity maximum can reach 100L/min, and maximum pump intake pressure is 1.5MPa, and pumpable particle diameter is less than the particle of 5mm.
The method of this low-heat asphalt grouting leak stopping, has the following steps:
Step 1, preparation low-heat asphalt grouting material;
A, utilize 6 pairs of bottled asphalts of asphalt barrel removing heating system take off bucket and be heated to 120 ℃, after adding paraffin and stirring, by bitumenpump 7, pump in stirring pulping machine 8;
B, utilize in boiler and hydrothermal system 4 and heat water to 80 ℃～90 ℃, after adding emulsifier and stirring, by suction pump 5, pump in stirring pulping machine 8;
C, by stirring pulping machine 8 stirring at low speed 1～3min, make material form oil-in-water shape mulseal;
D, in stirring pulping machine 8, add cement, control temperature at 60～80 ℃, stirring at low speed 3～5min, makes oil-in-water shape mulseal part breakdown of emulsion, forms the low heated bitumen of Water-In-Oil shape, obtains low-heat asphalt grouting material;
Step 2, packer grouting from bottom to top,, pulp section at asphalt thermal insulation grout pipe 3 is carried out grout hole 1 inner sealing with mould bag 2, open heat insulation gate valve 11, low-heat asphalt grouting material 12 is entered in screw pump 13 by the insulation bucket that is in the milk, with screw pump, low-heat asphalt grouting material is pumped into selected grout compartment by asphalt thermal insulation grout pipe 3, low-heat asphalt grouting material is under the given grouting pressure effect of pump, progressively diffusion, until diffusion front place pressure is all spaces of zero or complete this grout compartment of shutoff;
Step 3, will pull out a supreme grout compartment on asphalt thermal insulation grout pipe 3 use drawbenches, and repeating step two, until all grout compartments all complete grouting leak-stopping.
The raw material proportioning embodiment of low-heat asphalt grouting material of the present invention is as follows:
Embodiment mono-, and raw material composition and the weight portion proportioning of this low-heat asphalt grouting material are as follows:
100 parts of pitches;
5 parts, paraffin;
100 parts, water;
3 parts of cationic emulsifiers;
40 parts of cement.
Embodiment bis-, and raw material composition and the weight portion proportioning of this low-heat asphalt grouting material are as follows:
100 parts of pitches;
3 parts, paraffin;
100 parts, water;
1 part of cationic emulsifier;
30 parts of cement.
Embodiment tri-, and raw material composition and the weight portion proportioning of this low-heat asphalt grouting material are as follows:
100 parts of pitches;
4 parts, paraffin;
120 parts, water;
2 parts of cationic emulsifiers;
60 parts of cement.
Embodiment tetra-, and raw material composition and the weight portion proportioning of this low-heat asphalt grouting material are as follows:
100 parts of pitches;
5 parts, paraffin;
120 parts, water;
3 parts of cationic emulsifiers;
80 parts of cement.
Embodiment five, and raw material composition and the weight portion proportioning of this low-heat asphalt grouting material are as follows:
100 parts of pitches;
3 parts, paraffin;
120 parts, water;
2 parts of cationic emulsifiers;
50 parts of cement.
In above-described embodiment one to five, described pitch is petroleum bitumen or hydraulic asphalt, and its softening point is between 40～45 ℃; Needle penetration is 60～120, take 0.1mm as unit; Emulsifier is to split asphalt emulsifier in cation; Cement is Portland cement, and grade of cement is not less than P.O42.5, and the grain fineness D95 of cement is less than 80 μ m.
The density of described low-heat asphalt grouting material is greater than 1.1g/cm
3; In the time of 60 ℃, apparent viscosity is less than 1Pa.s; Construction temperature, below 80 ℃, is met water cooling and is solidified, by water punching, do not released; Within 28 days, unconfined compression strength is greater than 3MPa.
Described step 2 and step 3, carry out two limit control to grouting pressure and slurries injection rate in filling process.
Described step 4, after grouting leak-stopping finishes, closes screw pump 13, opens insulation return pipe 14, with diesel oil, passes through pump housing wash cycles screw pump 13.Boiler, mixer and grouting pipeline all can flushing-frees.
The principle of low-heat asphalt grouting leak stopping is as follows:
Mulseal is " oil-in-water " state when low temperature (room temperature), embodiment be the fluid properties of water, can not directly carry out impervious leakage-stopping; Utilize the thermodynamic phase of mulseal, after breakdown of emulsion, pitch will separate out from emulsion, form water-oil separating state, embody the character of pitch, meet water-setting solid, do not rush and release, but mobility is very poor during its low temperature, cannot be pumped into the position that leaks by grouting pipeline.The present invention makes mulseal breakdown of emulsion insufficient by adding suitable demulsifier, pitch has pitch chance water-setting and consolidates, do not rush the character of releasing after partly separating out, moisture is wrapped among pitch particle simultaneously, form " Water-In-Oil " state, after breakdown of emulsion, pitch has certain mobile performance, for further improving its mobility, the breakdown of emulsion process of " Water-In-Oil " low heated bitumen is put in 60～80 ℃ and is carried out, the safety puzzlement that can avoid construction at high temperature to cause equipment, personnel etc.
Shown in Fig. 1～6, below in conjunction with certain example, set forth the specific embodiment of low-heat Asphalt grouting leakage stoppage technique.
(1) adopt MD-80 rig to creep into projected depth, aperture 168m, hole depth 22m; According to boring situation, this hole depth has the fast water point position of 3 need to adopt low heated bitumen perfusion, lays respectively at 21m, 15m and 8m position.
(2) two 300L asphalt barrel removing heating systems 6 are added to asphalt heating, and add paraffin respectively, give boiler and hydrothermal system 4(2m simultaneously
3) in water heating, and add cationic emulsifier, stir, and to stirring pulping machine 8 heating and thermal insulations.
(3) remove rig, asphalt thermal insulation grout pipe 3 outsides be wrapped with on several mould bag 2(mould bags and be reserved with little grout pipe), together down to the degree of depth of 20m.By reserved grout pipe, pour into the cement slurry of water/binder ratio 2:1, until grouting pressure reaches 0.2MPa, continuity 3min finishes, and forms grouting mold bag and blocks.Give asphalt thermal insulation grout pipe 3 heating and thermal insulations.
(4) water temperature that the asphalt temperature in two asphalt barrel removing heating systems 6 reaches in 120 ℃ and boiler and hydrothermal system 4 reaches after 80 ℃, heated bitumen 300L in an asphalt barrel removing heating system and hot water 360L are pumped into respectively to stirring in stirring pulping machine 8, supplement pitch heating in asphalt barrel removing heating system 6 simultaneously.
(5) stirring pulping machine 8 stirs after 2min, adds cement 120kg, and stirring at low speed is 3～5min approximately, sees in mixing material and has pitch to separate out, and can open heat insulation gate valve 11, allows slurries enter insulation grouting bucket 12, opens screw pump 13 after slurries have certain altitude.
(6) when slowly closing insulation return pipe 14(is initial, return pipe is in breakdown state), by adjusting the aperture of return pipe, controlled grouting pressure is 0.3～0.5MPa, injection rate is 10～20L/min, take flow-control as main.
(7) if the low heated bitumen amount in stirring pulping machine 8 is few, can add heated bitumen and hot water in asphalt barrel removing heating system 6, the process of repetition 4,5 is constantly produced low heated bitumen and pours into.
(9) repeat above filling process, until the injection rate of low heated bitumen is all less than 1L/min, grouting pressure all reaches the maximum pressure of design grouting pressure or pump, can finish this section of perfusion.Open return pipe, in insulation grouting bucket 12, add 10L diesel oil, circulation pumping 1min is to clean screw pump 13.
(10) utilize drawbench on asphalt thermal insulation grout pipe, to pull out 2m, the cement slurry of pouring into 2:1 to new mould bag by the reserved little grout pipe of another root, until grouting pressure reaches 0.2MPa, continuity 3min finishes, and forms grouting mold bag and blocks.Repeat 4～9 filling process, until this grout compartment finishes grouting.
(11) process of repetition 10, until all grout compartments have all been filled with.
The equipment embodiment of this patent is applicable to the construction of low-heat asphalt grouting used, is not limited to above-mentioned example.
Claims (10)
1. an equipment for low-heat asphalt grouting leak stopping, is characterized in that: comprise boiler and hydrothermal system (4), asphalt barrel removing heating system (6), suction pump (5), bitumenpump (7), stirring pulping machine (8), asphalt thermal insulation pipe I(9), asphalt thermal insulation pipe II(10), heat insulation gate valve (11), insulation grouting bucket (12), screw pump (13), asphalt thermal insulation grout pipe (3) and be incubated return pipe (14);
The water side of described boiler and hydrothermal system (4) is connected with the water intake end of suction pump (5), and the water side of suction pump (5) is through asphalt thermal insulation pipe I(9) be connected with the feeding mouth of stirring pulping machine (8);
The discharge end of described asphalt barrel removing heating system (6) is connected with the feeding end of bitumenpump (7), and the discharge end of bitumenpump (7) is through asphalt thermal insulation pipe II(10) be connected with the feeding end of stirring pulping machine (8);
The discharging opening of described stirring pulping machine (8) bottom is connected with insulation grouting bucket (12) through heat insulation gate valve (11), insulation grouting bucket (12) is connected with the feeding mouth of screw pump (13) again, the discharging opening of screw pump (13) the asphalt thermal insulation grout pipe (3) inner with passing into grout hole (1) is connected, insulation return pipe (14) one end is connected with asphalt thermal insulation grout pipe (3), and the other end is connected with insulation grouting bucket (12).
2. the equipment of low-heat asphalt grouting leak stopping according to claim 1, it is characterized in that: described boiler and hydrothermal system (4) comprise combustor (4.1), boiler (4.2), circulation pump (4.3), heat-conducting oil pipes I(4.4) and water tank (4.5), combustor (4.1) is connected with boiler (4.2), heat-conducting oil pipes I(4.4) one end is connected with boiler (4.2), the other end stretches into and is arranged in water tank (4.5) inside, heat-conducting oil pipes I(4.4) on be connected with circulation pump (4.3).
3. the equipment of low-heat asphalt grouting leak stopping according to claim 1, it is characterized in that: described asphalt barrel removing heating system (6) comprises electric hoist (6.1), de-bucket storehouse (6.2), heat-conducting oil pipes II(6.3) and superconducting pipe (6.4), in the frame of electric hoist (6.1), suspention is useful on the electric block that promotes bottled asphalt, heat-conducting oil pipes II(6.3) around and be fixed on de-bucket storehouse (6.2) inwall, superconducting pipe (6.4) is vertically fixed on bottom, de-bucket storehouse (6.2).
4. the equipment of low-heat asphalt grouting leak stopping according to claim 1, is characterized in that: the equipment of described low-heat asphalt grouting leak stopping also comprises for detection of pressure, temperature, controls the control system of relevant device start and stop.
5. a method for employing low-heat asphalt grouting leak stopping of equipment as described in claim 1～4 any one, is characterized in that having the following steps:
Step 1, preparation low-heat asphalt grouting material;
A, utilize asphalt barrel removing heating system (6) take off bucket and be heated to 120 ℃ bottled asphalt, after adding paraffin and stirring, by bitumenpump (7), pump in stirring pulping machine (8);
B, utilize in boiler and hydrothermal system (4) and heat water to 80 ℃～90 ℃, after adding emulsifier and stirring, by suction pump (5), pump in stirring pulping machine (8);
C, by stirring pulping machine (8) stirring at low speed 1～3min, make material form oil-in-water shape mulseal;
D, in stirring pulping machine (8), add cement, control temperature at 60～80 ℃, stirring at low speed 3～5min, makes oil-in-water shape mulseal part breakdown of emulsion, forms the low heated bitumen of Water-In-Oil shape, obtains low-heat asphalt grouting material;
Step 2, packer grouting from bottom to top,, mould bag for pulp section (2) at asphalt thermal insulation grout pipe (3) carries out grout hole (1) inner sealing, open heat insulation gate valve (11), low-heat asphalt grouting material is entered in screw pump (13) by the insulation bucket (12) that is in the milk, with screw pump, low-heat asphalt grouting material is pumped into selected grout compartment by asphalt thermal insulation grout pipe (3), low-heat asphalt grouting material is under the given grouting pressure effect of pump, progressively diffusion, until diffusion front place pressure is all spaces of zero or complete this grout compartment of shutoff;
Step 3, by asphalt thermal insulation grout pipe (3), with pulling out a supreme grout compartment on drawbench, repeating step two, until all grout compartments all complete grouting leak-stopping.
6. the method for low-heat asphalt grouting leak stopping according to claim 5, is characterized in that: described step 1, the raw material of low-heat asphalt grouting material form and weight portion proportioning as follows:
100 parts of pitches;
3～5 parts, paraffin;
120 parts, water;
1～3 part of emulsifier;
30～80 parts of cement.
7. the method for low-heat asphalt grouting leak stopping according to claim 6, is characterized in that: described pitch is petroleum bitumen or hydraulic asphalt, and its softening point is between 40～45 ℃; Needle penetration is 60～120, take 0.1mm as unit;
Described emulsifier is to split asphalt emulsifier in cation;
Described cement is Portland cement, and grade of cement is not less than P.O42.5, and the grain fineness D95 of cement is less than 80 μ m.
8. the method for low-heat asphalt grouting leak stopping according to claim 6, is characterized in that: the density of described low-heat asphalt grouting material is greater than 1.1g/cm
3; In the time of 60 ℃, apparent viscosity is less than 1Pa.s; Construction temperature, below 80 ℃, is met water cooling and is solidified, by water punching, do not released; Within 28 days, unconfined compression strength is greater than 3MPa.
9. the method for low-heat asphalt grouting leak stopping according to claim 5, is characterized in that: described step 2 and step 3, and in filling process, grouting pressure and slurries injection rate are carried out to two limits and control.
10. the method for low-heat asphalt grouting leak stopping according to claim 5, is characterized in that: described step 4, after grouting leak-stopping finishes, close screw pump (13), and open insulation return pipe (14), by pump housing wash cycles screw pump (13).
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| CN103643680A (en) * | 2013-12-10 | 2014-03-19 | 浙江工业大学 | Emulsified asphalt grouting process |
| CN113846637A (en) * | 2021-10-20 | 2021-12-28 | 中电建冀交高速公路投资发展有限公司 | Asphalt grouting seepage-proofing and leakage-stopping method |
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| JPS60180949A (en) * | 1984-02-29 | 1985-09-14 | 日瀝化学工業株式会社 | Cement bitumen formed matter for pavement |
| CN85106319A (en) * | 1985-08-06 | 1987-02-18 | 兵器工业部第五三研究所 | A kind of rubber modified pitch emulsion and manufacturing process thereof |
| CN1078759A (en) * | 1992-05-11 | 1993-11-24 | 水利部交通部能源部南京水利科学研究院 | Caulking technology with tarring |
| CN101766964A (en) * | 2008-12-31 | 2010-07-07 | 张祥 | Specialized equipment for asphalt test |
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Patent Citations (4)
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|---|---|---|---|---|
| JPS60180949A (en) * | 1984-02-29 | 1985-09-14 | 日瀝化学工業株式会社 | Cement bitumen formed matter for pavement |
| CN85106319A (en) * | 1985-08-06 | 1987-02-18 | 兵器工业部第五三研究所 | A kind of rubber modified pitch emulsion and manufacturing process thereof |
| CN1078759A (en) * | 1992-05-11 | 1993-11-24 | 水利部交通部能源部南京水利科学研究院 | Caulking technology with tarring |
| CN101766964A (en) * | 2008-12-31 | 2010-07-07 | 张祥 | Specialized equipment for asphalt test |
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