CN112031038A - Water level pressure grouting plugging method - Google Patents
Water level pressure grouting plugging method Download PDFInfo
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- CN112031038A CN112031038A CN202010818801.4A CN202010818801A CN112031038A CN 112031038 A CN112031038 A CN 112031038A CN 202010818801 A CN202010818801 A CN 202010818801A CN 112031038 A CN112031038 A CN 112031038A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Abstract
The invention discloses a water level pressure grouting plugging method, which belongs to the field of water leakage plugging of basements, and adopts the manual creation of conditions suitable for hermetically pouring double-rapid cement, wherein the water level pressure reduces the water burst pressure to create conditions for concrete hardening, meanwhile, the indoor water level is manually raised, and double-rapid mortar is reversely pressed into a water leakage port by utilizing the water pressure to achieve the plugging effect; the invention has the characteristics of convenient material taking, simple and easy installation, rapid reaction and flexible strain, can effectively save the cost and ensure the continuous construction of the basement.
Description
Technical Field
The invention belongs to the field of basement water leakage plugging, and particularly relates to a water level pressure grouting plugging method.
Background
The basement spring water seepage belongs to the sudden engineering quality problem in the construction process, not only has adverse effect on the construction of the subsequent process, but also buries huge potential safety hazards to the overall construction quality of the engineering;
in the traditional construction process, for the condition of larger spring opening or larger water pressure, methods such as open hole drainage, outdoor precipitation, pressure slurry pumping and the like are generally adopted, professional equipment and corresponding materials are needed, the requirement on constructors is higher, and the equipment cost, the material cost and the labor cost are higher;
the prior art has the following problems:
(1) the construction process is more, the flow is complex, the smooth construction can be ensured only by compiling a construction scheme according to the actual field, and the construction period is influenced;
(2) professional equipment and professional plugging materials are needed, and a construction team consisting of corresponding professional operators is needed, so that the construction cost is increased more;
(3) the flexibility is relatively poor, and the spring eye gushes water due to sudden underground water level rising of strong rainfall and the like, and is slow in response, so that the subsequent construction of the basement is greatly influenced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problems of high plugging requirement, poor flexibility, high cost and the like of the basement water leakage prior art are solved.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses a water level pressure grouting plugging method which comprises a water leakage port, a first cylinder, a second cylinder and a plugging piece, wherein the diameter of the first cylinder is smaller than that of the second cylinder,
further comprising the steps of:
the method comprises the following steps: chiseling out a regular water leakage port, comprising:
1) determining a water leakage port to be blocked of the bottom plate, chiseling concrete until a reinforcing steel bar on the surface of the bottom plate is exposed, and expanding the concrete to a circular shallow pit with a diameter larger than that of the cylinder by taking the water leakage port as a center;
2) the bottom of the circular shallow pit is controlled to be in a stepped shape, the circular shallow pit comprises a first stepped hole and a second stepped hole, the first stepped hole is located on the second stepped hole, the diameter of the first stepped hole is larger than that of the second cylinder, and the diameter of the second stepped hole is larger than that of the first cylinder;
the step table surface is polished smoothly and is provided with a water leakage port, the diameter of the water leakage port is 20mm, and the depth of the water leakage port reaches the basic anchoring length labOr seismic basic anchoring length labe；
Step two: the bottom end of the first cylinder is vertically inserted into the second stepped hole, and meanwhile, the upper end of the first cylinder is hammered until the first cylinder is tightly combined with the round shallow pit;
step three: standing the cylinder until the water level in the cylinder I is constant, wherein the cylinder I adopts a thin-walled tube and uses an intense light illumination device to calibrate the water level;
step four: sleeving a cylinder II outside the cylinder I, fixing the cylinder II by the same method of the step II, and tightly combining the bottom end of the cylinder II with the circular shallow pit;
step five: pouring double-fast cement mortar into an interlayer between the first cylinder and the second cylinder, wherein the second cylinder adopts a thin-walled tube, the wall of the tube is irradiated by a high-intensity lighting device to confirm the pouring height, and the height of the mortar/the height of the water level of the first cylinder is controlled to be equal to the density of water/the density of the mortar; measuring the use amount of actual mortar;
step six: lifting the cylinder outwards and vertically and vibrating to control the upward speed, so as to ensure the layering of cement and water until the cement and water are finally and completely taken out;
step seven: the plugging piece extends into the first cylinder and sinks to the layering position of the mortar and the water under the action of gravity;
continuously and slowly adding water into the cylinder II to ensure that the water level is continuously increased while the mortar and the water are layered until the mortar begins to descend by using a high-intensity lighting device;
step eight: continuously increasing the water level, reducing the height of the mortar by using the water pressure before the initial setting of the mortar until the height of the mortar is close to invisible or is not obviously reduced, and controlling the water level to be maintained at the water level calibrated in the step three;
step nine: the first cylinder extends into the second cylinder and is pushed inwards, and the plugging piece is confirmed to fall into the round shallow pit completely;
step ten: if the high-intensity lighting equipment is adopted for observation, the height of the mortar is reduced to be invisible, and the mortar is poured into the cylinder II again until delamination occurs;
standing the cylinder II until the mortar is solidified, reducing the water level in the pipe and observing whether the water level rises again, and repeating the operation until the height of the mortar is stable if the water level rises again;
step eleven: after the first cylinder is used for multiple times to confirm mortar hardening, pumping out water in the second cylinder and dismantling the second cylinder, and maintaining the mortar higher than the bottom plate in a remaining in-situ manner;
step twelve: after curing for more than 28 days, chiseling out relatively weak mortar on the surface, chiseling to a plugging piece, backfilling and plugging the position by using high-strength waterproof concrete, and curing according to a standard flow;
preferably, the plugging piece is suitable for plugging a water leakage port to be plugged;
the blocking piece comprises a round blocking piece and a connecting shaft, the round blocking piece is fixedly connected with the connecting shaft, the diameter of the round blocking piece is smaller than the inner diameter of the cylinder II, the diameter of the round blocking piece is larger than the outer diameter of the cylinder I, and the connecting shaft is suitable for blocking the second stepped hole.
Preferably, the diameter of the circular baffle plate is 1 mm-3 mm smaller than the inner diameter of the cylinder II, and the thickness of the circular baffle plate is 1.5 mm-10 mm;
the connecting shaft is 16mm deformed steel bar, and the length of the connecting shaft is the required steel bar anchoring length of the bottom plate with the strength lower by one level.
Preferably, the device further comprises an absolute elevation H1 of a water level measured by the water level and an absolute elevation H2 of a water leakage port, a relative height difference (H1-H2) is obtained, and the lengths of the first cylinder and the second cylinder are both larger than (H1-H2).
Preferably, the first cylinder and the second cylinder are both PVC hard pipes.
Preferably, still include basement face reinforcing bar interval d, the external diameter of drum one is less than face reinforcing bar interval d, the external diameter of drum two is greater than face reinforcing bar interval d.
Preferably, the circular baffle is welded with the connecting shaft, and the connecting shaft is vertically erected on the center point of the circular baffle.
Compared with the prior art, the invention can obtain the following technical effects:
1. the invention has the following advantages:
(1) the process flow is short, the operation is simple, the scheme is relatively simple to compile, the precision requirement on various parameters is low, the effect can be quickly achieved, the adjustment can be timely carried out according to the actual field, and the construction continuity is ensured;
(2) the construction cost is effectively guaranteed, the materials are convenient to take or purchase, the processing requirement is low, and no professional and equipment are needed;
(3) the flexibility is good, the staff can be quickly organized to process emergency situations, and the pertinence is strong;
(4) the device can adjust various materials and processes according to the actual field, has low upper limit and lower limit, can be used for emergency temporary plugging to facilitate the temporary drainage of a basement, and can also be used for deepening the plugging effect by a scheme;
(5) when the plugging effect is not good, the plugging can be used as temporary plugging, only the problem of spring hole water inrush is required to be degraded into the problem of gap leakage, the basement can be ensured to pump water and drain in time, the subsequent construction is convenient, and professional team approach repair is arranged in the later period according to the needs;
in conclusion, the invention has the characteristics of convenient material taking, simple installation, rapid reaction and flexible strain, can effectively save cost and ensure the continuous construction of the basement, and is mainly suitable for the conditions that the excavation depth is shallow, the outdoor water level of the basement is not high relative to the bottom plate or the water level temporarily rises.
2. The invention limits the concrete structure of the plugging piece, and comprises a circular blocking piece and a connecting shaft, wherein the connecting shaft blocks the second stepped hole, and mortar is mixed around the circular blocking piece to realize the plugging effect.
3. The invention limits the diameter and the thickness of the circular baffle plate and the connection relation between the circular baffle plate and the connecting shaft, and is convenient for installation and material selection.
4. The invention limits the material, length and outer diameter of the first cylinder and the second cylinder, and is convenient for material selection and installation.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a partial cross-sectional view of step five of the present invention;
FIG. 2 is a schematic diagram of step one of the present invention;
FIG. 3 is a schematic diagram of step two of the present invention;
FIG. 4 is a partial enlarged view A of the present invention;
FIG. 5 is a schematic diagram of step eight of the present invention;
fig. 6 is a block diagram of a closure of the present invention.
In the figure: 1. a first cylinder; 2. a cylinder II; 3. a circular shallow pit; 4. a blocking piece (41, a circular baffle piece; 42, a connecting shaft; a connecting shaft); 5. a base plate; 6. a water leakage port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 to 6: a water level pressure grouting plugging method comprises a water leakage port 6, a first cylinder 1, a second cylinder 2 and a plugging piece 4, wherein the diameter of the first cylinder 1 is smaller than that of the second cylinder 2,
further comprising the steps of:
the method comprises the following steps: chiseling out a regular water leakage opening 6, comprising:
1) determining a water leakage port 6 to be plugged of the bottom plate 5, chiseling concrete until a reinforcing steel bar on the surface of the bottom plate 5 is exposed, and expanding the concrete to a circular shallow pit 3 with the diameter larger than that of the cylinder II 2 by taking the water leakage port 6 as a center;
2) the bottom of the circular shallow pit 3 is controlled to be stepped, the circular shallow pit 3 comprises a first stepped hole and a second stepped hole, the first stepped hole is located on the second stepped hole, the diameter of the first stepped hole is larger than that of the second cylinder 2, and the diameter of the second stepped hole is larger than that of the first cylinder 1;
the step table surface is polished smoothly and is chiseled with a water leakage opening 6, the diameter of the water leakage opening 6 is 20mm, and the depth reaches the basic anchoring length labOr seismic basic anchoring length labe；
Step two: the bottom end of the first cylinder 1 is vertically inserted into the second stepped hole, and meanwhile, the upper end of the first cylinder 1 is hammered until the first cylinder is tightly combined with the circular shallow pit 3;
step three: standing the cylinder I1 until the water level in the cylinder I1 is constant, wherein the cylinder I1 adopts a thin-walled tube, and uses an intense light illumination device to calibrate the water level;
step four: sleeving a cylinder II 2 outside the cylinder I1, fixing the cylinder II 2 by the same method of the step II, and tightly combining the bottom end of the cylinder II 2 with the circular shallow pit;
step five: pouring double-fast cement mortar into an interlayer between the first cylinder 1 and the second cylinder 2, wherein the second cylinder 2 is a thin-walled tube, the wall of the tube is irradiated by a high-intensity lighting device to confirm the pouring height, and the height of the mortar/the height of the water level of the first cylinder 1 is controlled to be equal to the density of water/the density of the mortar;
step six: the cylinder I1 is lifted outwards vertically and vibrated to control the upward speed, so that the cement and water are layered until the cement and the water are finally taken out completely;
step seven: the plugging piece 4 extends into the cylinder I1 and sinks to the layering position of the mortar and the water under the action of gravity;
water is continuously and slowly added into the cylinder II 2, so that the water level is continuously increased while the mortar and the water are layered, and the mortar begins to drop until the high-intensity lighting equipment is used for observing the mortar height;
step eight: continuously increasing the water level, reducing the height of the mortar by using the water pressure before the initial setting of the mortar until the height of the mortar is close to invisible or is not obviously reduced, and controlling the water level to be maintained at the water level calibrated in the step three;
step nine: extending the cylinder I1 into the cylinder II 2 and pushing inwards to confirm that the plugging piece 4 completely falls into the circular shallow pit 3;
step ten: if the high-intensity lighting equipment is adopted for observation, the height of the mortar is reduced to be invisible, and the mortar is poured into the cylinder II 2 again until delamination occurs;
standing the cylinder II 2 until the mortar is solidified, reducing the water level in the pipe and observing whether the water level rises again, and repeating the operation until the height of the mortar is stable if the water level rises again;
step eleven: after the cylinder I1 is used for multiple times to confirm that the mortar is hardened, pumping out water in the cylinder II 2 and dismantling the cylinder II 2, and keeping the mortar higher than the bottom plate 5 in situ for maintenance;
step twelve: after curing for more than 28 days, chiseling out relatively weak mortar on the surface, chiseling to a plugging piece 4, backfilling and plugging the position by using high-strength waterproof concrete, and curing according to a standard flow;
the plugging piece 4 is suitable for plugging a water leakage port 6 to be plugged;
the blocking piece 4 comprises a circular baffle piece 41 and a connecting shaft 42, the circular baffle piece 41 is fixedly connected with the connecting shaft 42, the diameter of the circular baffle piece 41 is smaller than the inner diameter of the cylinder II 2, the diameter of the circular baffle piece 41 is larger than the outer diameter of the cylinder I1, and the connecting shaft 42 is suitable for blocking the water leakage port 6.
The diameter of the circular baffle plate 41 is 2mm smaller than the inner diameter of the cylinder II 2, and the thickness of the circular baffle plate 41 is 4 mm;
the connecting shaft 42 is 16mm deformed steel bar, and the length of the connecting shaft 42 is the required steel bar anchoring length of the bottom plate 5 with the strength lower by one level.
The water level measuring device further comprises an absolute elevation H1 of the water level measured actually and an absolute elevation H2 of the water leakage opening 6, the obtained relative height difference is (H1-H2), and the lengths of the first cylinder 1 and the second cylinder 2 are both larger than (H1-H2).
The first cylinder 1 and the second cylinder 2 are both PVC hard tubes.
Still include basement face reinforcing bar interval d, the external diameter of drum one 1 is less than face reinforcing bar interval d, and the external diameter of drum two 2 is greater than face reinforcing bar interval d.
The round blocking piece 41 is welded with the connecting shaft 42, and the connecting shaft 42 is vertically erected on the center point of the round blocking piece 41.
The basic principle is as follows: the conditions are created manually, so that the water levels inside and outside the basement are locally equal, the water inrush pressure is reduced, the conditions are created for concrete hardening, meanwhile, the indoor water level is artificially raised, and the double-rapid mortar is pressed into the water leakage port 6 reversely by utilizing the water pressure so as to achieve the plugging effect.
Specifically, the invention adopts the pressure generated by the water level to realize the mortar sealing water leakage port 6 of the double-fast cement, the water leakage port 6 is chiseled to be a round shallow pit 1, the differentiation sealing is realized by adopting a big hole and a small hole, and the mortar generated by the double-fast cement is poured in the interlayer;
because the first cylinder 2 and the second cylinder 3 are thin-walled tubes, in order to ensure that the internal pressure and the external pressure are consistent, the defined height ratio is equal to the inverse ratio of the density ratio;
when the cylinder I2 is pulled out, the mortar is mixed with water and then quickly layered, the mortar is gathered at the bottom of the cylinder II 3, the plugging piece 4 is added, the water level is increased, the pressure is increased, so that the plugging piece 4 quickly plugs the water leakage opening 6, and then the mortar is continuously observed and added, so that the mortar is highly stable in the cylinder II 3, and the plugging condition is better;
and then testing the plugging condition to ensure that the water level is unchanged, finally maintaining, plugging by adopting high-strength waterproof concrete, and maintaining to finish plugging of the water leaking port 6.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A water level pressure grouting plugging method comprises a water leakage port (6), a first cylinder (1), a second cylinder (2) and a plugging piece (4), wherein the diameter of the first cylinder (1) is smaller than that of the second cylinder (2);
the method is characterized in that: further comprising the steps of:
the method comprises the following steps: chiseling out a regular water leakage opening (6), comprising:
1) determining a water leakage port (6) to be blocked of the bottom plate (5), chiseling concrete until a steel bar on the surface of the bottom plate (5) is exposed, and expanding to a circular shallow pit (3) with the diameter larger than that of the cylinder II (2) by taking the water leakage port (6) as a center;
2) the bottom of the circular shallow pit (3) is controlled to be of a stepped type, the circular shallow pit (3) comprises a first stepped hole and a second stepped hole, the first stepped hole is located on the second stepped hole, the diameter of the first stepped hole is larger than that of the second cylinder (2), and the diameter of the second stepped hole is larger than that of the first cylinder (1);
the step table surface is polished smoothly and is provided with a water leakage port (6), the diameter of the water leakage port (6) is 20mm, and the depth of the water leakage port reaches the basic anchoring length labOr seismic basic anchoring length labe；
Step two: the bottom end of the first cylinder (1) is vertically inserted into the second stepped hole, and meanwhile, the upper end of the first cylinder (1) is hammered until the first cylinder is tightly combined with the circular shallow pit (3);
step three: standing the cylinder I (1) until the water level in the cylinder I (1) is constant, wherein the cylinder I (1) adopts a thin-walled tube, and uses an intense light illumination device to calibrate the water level;
step four: sleeving a cylinder II (2) outside the cylinder I (1), fixing the cylinder II (2) by the same method of the step II, and tightly combining the bottom end of the cylinder II (2) with the round shallow pit;
step five: pouring double-fast cement mortar into an interlayer between the first cylinder (1) and the second cylinder (2), wherein the second cylinder (2) adopts a thin-walled tube, a strong light illumination device is used for irradiating the tube wall to confirm the pouring height, and the height of the mortar/the height of the water level of the first cylinder (1) is controlled to be equal to the density of water/the density of the mortar;
step six: the cylinder I (1) is lifted outwards vertically and vibrated to control the upward speed, so that the cement and water are layered until the cement and the water are finally taken out completely;
step seven: the plugging piece (4) extends into the cylinder I (1) and sinks to the layering position of mortar and water under the action of gravity;
continuously and slowly adding water into the cylinder II (2), ensuring that the mortar and water are layered and simultaneously continuously increasing the water level until the mortar begins to descend by using a strong light illumination device;
step eight: continuously increasing the water level, reducing the height of the mortar by using the water pressure before the initial setting of the mortar until the height of the mortar is close to invisible or is not obviously reduced, and controlling the water level to be maintained at the water level calibrated in the step three;
step nine: extending the cylinder I (1) into the cylinder II (2) and pushing inwards to confirm that the plugging piece (4) completely falls into the circular shallow pit (3);
step ten: if the high-intensity lighting equipment is adopted for observation, the height of the mortar is reduced to be invisible, and the mortar is poured into the cylinder II (2) again until delamination occurs;
standing the cylinder II (2) until the mortar is solidified, reducing the water level in the pipe and observing whether the water level rises again, and repeating the operation until the height of the mortar is stable if the water level rises again;
step eleven: after the cylinder I (1) is used for multiple times to confirm that the mortar is hardened, pumping out water in the cylinder II (2) and dismantling the cylinder II (2), and reserving the mortar higher than the bottom plate (5) in situ for maintenance;
step twelve: and after curing for more than 28 days, chiseling out the relatively weak mortar on the surface, chiseling to the plugging piece (4), backfilling and plugging the position by using high-strength waterproof concrete, and curing according to a standard flow.
2. The water level pressure grouting plugging method according to claim 1, characterized in that: the plugging piece (4), the plugging piece (4) is suitable for plugging a water leakage opening (6) to be plugged;
the blocking piece (4) comprises a circular blocking piece (41) and a connecting shaft (42), the circular blocking piece (41) is fixedly connected with the connecting shaft (42), the diameter of the circular blocking piece (41) is smaller than the inner diameter of the cylinder II (2), the diameter of the circular blocking piece (41) is larger than the outer diameter of the cylinder I (1), and the connecting shaft (42) is suitable for blocking the second stepped hole.
3. The water level pressure grouting plugging method according to claim 2, characterized in that: the diameter of the circular baffle plate (41) is 1 mm-3 mm smaller than the inner diameter of the cylinder II (2), and the thickness of the circular baffle plate (41) is 1.5 mm-10 mm;
the connecting shaft (42) is 16mm deformed steel bar, and the length of the connecting shaft (42) is equal to the required steel bar anchoring length of the bottom plate (5) with the strength lower by one level.
4. The water level pressure grouting plugging method according to claim 1, characterized in that: the water level measuring device further comprises an absolute elevation H1 of the water level measured actually and an absolute elevation H2 of the water leakage port (6) to obtain a relative height difference (H1-H2), and the tube lengths of the first cylinder (1) and the second cylinder (2) are all larger than (H1-H2).
5. The water level pressure grouting plugging method according to claim 1, characterized in that: the first cylinder (1) and the second cylinder (2) are both PVC hard tubes.
6. The water level pressure grouting plugging method according to claim 2, characterized in that: still include basement face reinforcing bar interval d, the external diameter of drum one (1) is less than face reinforcing bar interval d, the external diameter of drum two (2) is greater than face reinforcing bar interval d.
7. The water level pressure grouting plugging method according to claim 2, characterized in that: the round baffle plate (41) is welded with the connecting shaft (42), and the connecting shaft (42) is vertically erected on the center point of the round baffle plate (41).
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0716189A1 (en) * | 1994-12-07 | 1996-06-12 | Shigeo Nagahama | A cut-off water process for a concrete underground structure |
| CN109098213A (en) * | 2018-08-29 | 2018-12-28 | 中国建筑第四工程局有限公司 | A kind of basement blocking method |
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2020
- 2020-08-14 CN CN202010818801.4A patent/CN112031038B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0716189A1 (en) * | 1994-12-07 | 1996-06-12 | Shigeo Nagahama | A cut-off water process for a concrete underground structure |
| CN109098213A (en) * | 2018-08-29 | 2018-12-28 | 中国建筑第四工程局有限公司 | A kind of basement blocking method |
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