CN113203527A - Method for detecting leakage point position of underground concrete continuous wall - Google Patents
Method for detecting leakage point position of underground concrete continuous wall Download PDFInfo
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- CN113203527A CN113203527A CN202110561244.7A CN202110561244A CN113203527A CN 113203527 A CN113203527 A CN 113203527A CN 202110561244 A CN202110561244 A CN 202110561244A CN 113203527 A CN113203527 A CN 113203527A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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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
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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
- E02D31/10—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 soil pressure or hydraulic pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/56—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements
- G01F23/58—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using mechanically actuated indicating means
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Abstract
The application relates to a method for detecting the leakage point position of an underground concrete continuous wall, which comprises the following steps of S1: digging an initial exploration well outside the continuous wall; s2: pumping underground water in the continuous wall; s3: observing the water level of the primary exploration well, and determining the position of the leakage point of the continuous wall corresponding to the primary exploration well with the lowered water level; s4: digging detection grooves outside the leakage point area of the continuous wall, and dividing the detection grooves into a plurality of detection areas by using partition plates; s5: filling water into the detection groove, observing the water level of each detection section, and if the water level of a certain detection section is reduced, determining that the continuous wall corresponding to the detection section is the position of a leakage point; s6: pumping out water from the detection groove, taking out the partition plates, reserving two partition plates at two sides of the detection interval, and backfilling the rest detection intervals; s7: and pouring water towards the detection interval step by step, standing for a period of time after each water pouring, observing the change of the water level, and determining the position corresponding to the height of the water level as the final leakage point position if the water level is reduced for a certain time. The application has the effect of improving the comprehensiveness of the position detection of the leakage points of the continuous wall.
Description
Technical Field
The application relates to the field of diaphragm wall quality detection, in particular to a detection method for the leakage point position of an underground concrete diaphragm wall.
Background
The underground concrete continuous wall is called as underground continuous wall or continuous wall for short, the continuous wall is characterized in that foundation engineering adopts a trenching machine on the ground, and a long and narrow deep groove is excavated along the peripheral axis of the deep excavation engineering under the condition of slurry wall protection. After the groove is cleaned, a reinforcement cage is hoisted in the groove, and underwater concrete is poured by a guide pipe method to form a unit groove section. The construction is carried out section by section, and a continuous reinforced concrete wall is built underground and serves as a water interception, seepage prevention, bearing and water retaining structure.
After the continuous wall is constructed, in order to ensure the quality of the continuous wall, anti-seepage detection is generally required to be carried out on the continuous wall, and if the continuous wall has a seepage phenomenon in the anti-seepage detection process, a constructor needs to determine the position of a seepage point so as to take remedial measures to ensure the quality of the continuous wall. In the related technology, an ultrasonic detection method is adopted for detecting the position of a leakage point of the continuous wall, ultrasonic detection tubes are vertically embedded in two sides of a groove section joint respectively when the continuous wall is poured, after the continuous wall is poured, an ultrasonic emitter and an ultrasonic receiver are respectively placed in the two detection tubes to detect the joint, and whether a gap or mud exists in the joint of the continuous wall is deduced by utilizing the speed difference of ultrasonic waves in concrete and water or soil, so that the position of the leakage point is found out.
In view of the above-mentioned related technologies, the inventor believes that the ultrasonic detection method can only detect the joint of the continuous wall, but cannot detect whether there is a leakage point at other parts of the continuous wall, and has the defect that the detection of the leakage point position of the continuous wall is incomplete.
Disclosure of Invention
In order to improve the incomplete problem of continuous wall seepage point position detection, the application provides a detection method of underground concrete continuous wall seepage point position.
The application provides a detection method of underground concrete continuous wall leak source position adopts following technical scheme:
a detection method for the leakage point position of an underground concrete continuous wall comprises the following steps:
step S1: digging a plurality of primary exploration wells at intervals on the periphery of the continuous wall;
step S2: pumping underground water in an area enclosed by the continuous wall;
step S3: observing the change condition of the water level in the primary exploration wells, and if the water level of a certain primary exploration well is obviously reduced, preliminarily determining the continuous wall area corresponding to the primary exploration well as the position of a leakage point;
step S4: digging detection grooves in the periphery of a primarily determined leakage point area of the continuous wall, and partitioning the detection grooves by using partition plates so as to partition the detection grooves into a plurality of independent detection intervals;
step S5: uniformly irrigating water into the detection grooves, observing the change condition of the water level in each detection interval, and if the water level in a certain detection interval is obviously reduced, determining the continuous wall area corresponding to the detection interval as the leakage point position so as to reduce the position range of the continuous wall leakage point;
step S6: pumping out water in the detection groove, then taking out the partition plates in the detection groove, reserving two partition plates at two sides of a detection interval corresponding to the leakage point position of the continuous wall, and backfilling the rest intervals of the detection groove except the detection interval corresponding to the leakage point position of the continuous wall with soil;
step S7: and (3) irrigating water step by step towards the last reserved detection interval, standing for a period of time after each irrigation, observing the change condition of the water level, and determining the position of the continuous wall corresponding to the height of the water level as the final leakage point position if the water level is obviously reduced for a certain time.
By adopting the technical scheme, when the leakage point position of the continuous wall is detected, the seven steps are totally summarized into three detection stages. The first stage is as follows: preliminarily determining the position and the direction of the leakage point of the continuous wall through a preliminary exploration well on the periphery of the continuous wall; and a second stage: determining the position of the leakage point of the continuous wall again by detecting each detection interval in the groove, and reducing the position range of the leakage point of the continuous wall; and a third stage: and finally determining the position of the leakage point of the continuous wall by a mode of pouring water gradually towards the detection interval. The method for detecting the positions of the leakage points of the continuous wall can effectively ensure the comprehensiveness of the position detection of the leakage points of the continuous wall and ensure the final quality of the continuous wall.
Optionally, in step S1, after the primary exploration well is dug, polyurethane is injected into the periphery of the primary exploration well on the side opposite to the continuous wall to seal the water source for a short time.
Through adopting above-mentioned technical scheme, seal the water source in short-term through the peripheral polyurethane injection in reconnaissance well one side of diaphragm wall dorsad for reconnaissance well internal water source can only permeate towards one side towards the diaphragm wall, thereby blocks reconnaissance well internal water source and spreads towards other directions, with the precision of improvement to diaphragm wall leak source position detection.
Optionally, in step S1, after the primary exploration well is dug, a layer of waterproof roll is further laid on the inner wall of the primary exploration well on the side opposite to the continuous wall.
Through adopting above-mentioned technical scheme, waterproofing membrane cooperation polyurethane plays the effect that blocks the inside water source of reconnaissance well towards the direction diffusion of diaphragm wall jointly to improve the accuracy nature that detects diaphragm wall leakage point position.
Optionally, a lower anchor ring is arranged at a position, close to the waterproof coiled material, at the bottom of the primary exploration well, a tightening belt in a tightened state is attached to the waterproof coiled material, the lower end of the tightening belt is connected to the lower anchor ring, an upper anchor ring is arranged on the ground on one side, opposite to the continuous wall, of the primary exploration well, and the upper end of the tightening belt is connected to the upper anchor ring.
Through adopting above-mentioned technical scheme, the both ends of tightening the area are fixed through last anchor ring and anchor ring down respectively, tighten waterproofing membrane on the wall of a well of surveying the well through tightening the area to improve waterproofing membrane's stability of pasting, reduce waterproofing membrane and soak the condition that drops because of viscidity reduction in aqueous for a long time.
Optionally, in step S4, after the detection groove is dug, before the partition board is installed, continuous mounting grooves are dug along the groove walls on both sides of the detection groove and the groove bottom, and a plurality of mounting grooves are dug in the detection groove to allow a plurality of partition boards to be installed respectively, and after the partition boards are placed in the mounting grooves, concrete is poured into gaps between the partition boards and the groove walls of the mounting grooves.
Through adopting above-mentioned technical scheme, back in the mounting groove is put into to the baffle, pours the concrete between baffle and mounting groove cell wall, treats the concrete setting back, plays the effect fixed to the baffle on the one hand, and on the other hand plays the effect of improving the baffle leakproofness to ensure that arbitrary two adjacent detection interval do not influence each other, thereby the water source in arbitrary two adjacent detection interval can't circulate at will, with the accurate nature that improves final diaphragm wall leakage point position detection.
Optionally, dig at the mounting groove and establish the back that finishes, use the barrier cloth to lay on the cell wall of mounting groove to make the both sides of barrier cloth extend and paste on the inner wall that detects the slot, later put into the mounting groove with the baffle again, pour the concrete between baffle and barrier cloth.
Through adopting above-mentioned technical scheme, use isolation cloth to lay in advance on the mounting groove cell wall, be in order to separate the concrete of later stage pouring and the mounting groove cell wall to conveniently take out the baffle from detecting the ditch inslot at last, so that the baffle appears and glues in the mounting groove through the concrete and be difficult to the condition of taking out.
Optionally, in step S6, the soil backfilled in the remaining detection intervals of the detection trench except the detection interval corresponding to the leakage point of the continuous wall is backfilled with soil with better soil quality and dried, and is backfilled layer by layer and tamped layer by layer.
Through adopting above-mentioned technical scheme, adopt the better and dry soil of soil property to backfill to adopt the successive layer to backfill, the mode of successive layer tamp, the steadiness of multiplicable ground reduces and establishes the detection slot and cause the influence to the steadiness of continuous wall because of digging at the in-process that detects the seepage point position.
Optionally, in step S7, be provided with the water level observation mechanism who makes things convenient for constructor to survey the water level situation of change in the detection interval that remains at last, water level observation mechanism is including being located the fixed montant of detection interval, the lower extreme of fixed montant is fixed in on the diapire of detection interval, the upper end of fixed montant extends the detection interval, still be provided with the activity float bar that parallels with fixed montant in the detection interval, the lower extreme of activity float bar is provided with movable floater, be provided with the cover on the fixed montant and establish the guide ring that the cover was established and is led the activity float bar outside to the activity float bar.
By adopting the technical scheme, water is poured step by step towards the last reserved detection interval, standing is carried out for a period of time after water is poured each time, the change condition of the water level can be determined by observing the descending condition of the movable floating rod, and if the movable floating rod obviously descends after water is poured at a certain stage, the position of the continuous wall corresponding to the height of the water level can be determined as the final leakage point position. Through observing the decline condition of activity float rod promptly, can be convenient for constructor in time and clearly learn the change condition of current water level to constructor's the final seepage point position of definite continuous wall better.
Optionally, the upper end of the fixed vertical rod is provided with an observation plate extending to the movable floating rod, the observation plate is provided with a notch for the movable floating rod to slide through, and the outer wall of the movable floating rod is provided with a scale line.
By adopting the technical scheme, the observation plate is aligned to the movable floating rod, and an operator can compare the scale lines on the movable floating rod by referring to the observation plate to determine whether the current movable floating rod is obviously descended or not.
Optionally, the upper end of the movable floating rod is provided with an anti-drop head which is abutted to the observation plate.
Through adopting above-mentioned technical scheme, the anticreep head that sets up is used for blockking the upper end of activity float rod and drops downwards from the observation board.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the detection mode of the leakage point position of the continuous wall in three definite stages can effectively ensure the comprehensiveness of the detection of the leakage point position of the continuous wall, thereby ensuring the final quality of the continuous wall;
2. the waterproof coiled material is matched with polyurethane to play a role in jointly preventing the water source in the exploration well from diffusing towards the direction back to the continuous wall, so that the water source in the exploration well can only permeate towards one side facing the continuous wall, and the detection accuracy of the position of a leakage point of the continuous wall is improved;
3. the partition plates are adhered to the mounting grooves through concrete, so that the partition plates are fixed, the sealing performance of the partition plates is improved, and the two adjacent detection areas are not affected with each other, so that water sources in the two adjacent detection areas cannot circulate randomly, and the detection accuracy of the leakage point positions of the continuous wall is improved finally;
4. through observing the descending condition of the movable floating rod, the constructor can conveniently and clearly know the change condition of the current water level in time so as to better determine the final leakage point position of the continuous wall.
Drawings
FIG. 1 is a schematic view showing the arrangement of the diaphragm wall, the inspection groove, the preliminary exploration well and polyurethane in the example of the present application.
Fig. 2 is a cross-sectional view of the interior of a primary exploration well in an embodiment of the present application.
Fig. 3 is a cross-sectional view of the inside of a detection groove in the embodiment of the present application.
Fig. 4 is an enlarged view of a portion a in fig. 3.
Reference numerals: 1. a continuous wall; 2. carrying out primary exploration on a well; 3. waterproof coiled materials; 4. an upper anchor ring; 5. a lower anchor ring; 6. tightening a belt; 7. temporary concrete; 8. a polyurethane; 9. detecting a groove; 91. detecting an interval; 92. mounting grooves; 10. a partition plate; 11. concrete; 12. an isolation cloth; 13. a water level observation mechanism; 131. fixing the vertical rod; 132. a movable float rod; 1321. a reticle; 133. a movable floating ball; 134. a guide ring; 135. an observation plate; 1351. a notch; 136. prevent the head from falling off.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a method for detecting the position of a leakage point of an underground concrete continuous wall.
Referring to fig. 1, a method for detecting a leakage point position of an underground concrete continuous wall includes the following steps:
step S1: digging a plurality of primary exploration wells 2 at equal intervals at the periphery of the continuous wall 1, then paving a layer of waterproof coiled material 3 on the inner walls of the primary exploration wells 2 at the side opposite to the continuous wall 1, injecting polyurethane 8 at the periphery of the primary exploration wells 2 at the side opposite to the continuous wall 1 to seal a water source for a short time, then irrigating water into the primary exploration wells 2, and making a highest water level mark;
step S2: pumping underground water in the area surrounded by the continuous wall 1;
step S3: observing the change condition of the water level in the primary exploration wells 2, and if the water level of a certain primary exploration well 2 is obviously reduced, preliminarily determining the area of the continuous wall 1 corresponding to the primary exploration well 2 as the position of a leakage point;
step S4: digging a detection groove 9 at the periphery of a primarily determined leakage point area of the continuous wall 1, and partitioning the detection groove 9 by using partition plates 10 made of metal materials to partition the whole detection groove 9 into a plurality of mutually independent detection intervals 91 with equal volume;
step S5: uniformly irrigating water into the detection groove 9 to ensure that the water level heights in all the detection intervals 91 are the same, then observing the change condition of the water level in all the detection intervals 91, and if the water level in a certain detection interval 91 is obviously reduced, determining the area of the continuous wall 1 corresponding to the detection interval 91 as the position of a leakage point so as to reduce the position range of the leakage point of the continuous wall 1;
step S6: completely pumping out water in all detection intervals 91 in the detection groove 9, then taking out the partition boards 10 in the detection groove 9, keeping two partition boards 10 at two sides of the detection interval 91 corresponding to the leakage point position of the continuous wall 1, and then backfilling the rest intervals of the detection groove 9 except the detection interval 91 corresponding to the leakage point position of the continuous wall 1 by using soil, wherein the backfilled soil needs to be good and dry in quality, and is backfilled layer by layer and tamped layer by layer;
step S7: and (3) gradually filling water towards the last reserved detection interval 91, standing for a period of time after each water filling, and determining the change condition of the water level by observing the water level observation mechanism 13, wherein if the water level is obviously reduced after a certain water filling, the position of the continuous wall 1 corresponding to the height of the water level can be determined as the final leakage point position.
Referring to fig. 2, in step S1, after the constructor lays the waterproofing membrane 3 on the inner wall of the first prospecting well 2 on the side opposite to the continuous wall 1, temporary concrete 7 may be poured on the bottom of the first prospecting well 2 near the waterproofing membrane 3 and the ground of the first prospecting well 2 on the side opposite to the continuous wall 1; before the temporary concrete 7 is solidified, a lower anchor ring 5 is inserted into the temporary concrete 7 at the bottom of the primary exploration well 2, an upper anchor ring 4 is inserted into the temporary concrete 7 on the ground, and after the temporary concrete 7 is solidified, the upper anchor ring 4 and the lower anchor ring 5 are fixed. And then a tightening belt 6 is connected between the upper anchor ring 4 and the lower anchor ring 5, the tightening belt 6 is made of a rubber material, the tightening belt 6 is tightly attached to the waterproof coiled material 3, and the waterproof coiled material 3 can be tightly tightened on the well wall of the primary exploration well 2, so that the sticking stability of the waterproof coiled material 3 is improved, and the situation that the waterproof coiled material 3 falls off due to the reduction of viscosity after being soaked in water for a long time is reduced.
Referring to fig. 3 and 4, in step S4, after the detection groove 9 is dug, a plurality of continuous mounting grooves 92 are dug in the detection groove 9 at equal intervals along the groove walls and the groove bottoms of the two sides of the detection groove 9 for mounting the plurality of partition boards 10 respectively, and the groove width of each mounting groove 92 is slightly larger than the plate thickness of each partition board 10. Before the partition board 10 is placed in the installation groove 92, a layer of isolation cloth 12 is laid in the installation groove 92 by a constructor, the isolation cloth 12 is made of common plastic cloth which is not stained with the concrete 11 in the building construction process, and two sides of the isolation cloth 12 are ensured to extend and be attached to the inner wall of the detection groove 9.
After laying isolation cloth 12, constructor corresponds baffle 10 and puts into each mounting groove 92 in, then to pouring concrete 11 in the clearance between baffle 10 and the mounting groove 92 cell wall, treat after concrete 11 solidifies, when can fixing baffle 10 steadily, still play the effect of improving the baffle 10 leakproofness, make arbitrary two adjacent detection interval 91 each other not influence, thereby the water source in arbitrary two adjacent detection interval 91 can't circulate at will, in order to improve the accurate nature of 1 seepage point position detection of final diaphragm wall.
In addition, the function of using the isolation cloth 12 to be laid on the wall of the installation groove 92 in advance is to separate the concrete 11 poured in the later period from the wall of the installation groove 92, so that the partition board 10 can be taken out from the detection groove 9 conveniently, and the partition board 10 is prevented from being difficult to take out due to the fact that the concrete 11 is adhered to the installation groove 92.
Referring to fig. 3 and 4, in step S7, the water level observing mechanism 13 includes a fixed vertical rod 131, a movable floating rod 132 and a movable floating ball 133, the movable floating ball 133 is fixedly connected to the lower end of the movable floating rod 132, and the movable floating rod 132 and the movable floating ball 133 are made of plastic materials and can float on the water surface well. A space is left between the movable floating rod 132 and the fixed vertical rod 131 and the movable floating rod 132 and the fixed vertical rod 131 are arranged in parallel, and a plurality of guide rings 134 which are sleeved outside the movable floating rod 132 and used for guiding the movable floating rod 132 are arranged on the fixed vertical rod 131 at intervals.
When the fixed vertical rod 131 is installed, the fixed vertical rod 131 with the movable floating rod 132 and the movable floating ball 133 is placed in the detection area 91, the lower end of the fixed vertical rod 131 is inserted into soil to be fixed, and the fixed vertical rod 131 is kept in a stable and vertical state.
An observation plate 135 horizontally extending to the movable floating rod 132 is fixedly connected to the upper end of the fixed vertical rod 131, a notch 1351 for the movable floating rod 132 to slide through is formed in one side, facing the movable floating rod 132, of the observation plate 135, a continuous scale line 1321 is arranged on the outer wall of the movable floating rod 132, an anti-falling head 136 abutting against the observation plate 135 is fixedly connected to the upper end of the movable floating rod 132, and the upper end of the movable floating rod 132 can be prevented from falling off from the observation plate 135 downwards through the anti-falling head 136.
During detection, water is poured step by step towards the detection interval 91 reserved at the last, the movable floating rod 132 floats upwards for a distance after water is poured each time, the movable floating rod 132 is kept still for a period of time after water is poured each time, constructors can determine the change condition of the water level by observing the descending condition of the movable floating rod 132, and if the movable floating rod 132 obviously descends after water is poured at a certain stage, the position of the continuous wall 1 corresponding to the height of the water level can be determined to be the final leakage point position.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The method for detecting the leakage point position of the underground concrete continuous wall is characterized by comprising the following steps of: the method comprises the following steps:
step S1: digging a plurality of primary exploration wells (2) at intervals on the periphery of the continuous wall (1);
step S2: pumping underground water in the area enclosed by the continuous wall (1);
step S3: observing the change condition of the water level in the primary exploration wells (2), and if the water level of a certain primary exploration well (2) is obviously reduced, preliminarily determining the area of the continuous wall (1) corresponding to the primary exploration well (2) as the position of a leakage point;
step S4: digging detection grooves (9) at the periphery of a region where leakage points are preliminarily determined on the continuous wall (1), and partitioning the detection grooves (9) by using partition plates (10) to partition the detection grooves (9) into a plurality of independent detection areas (91);
step S5: uniformly irrigating water into the detection grooves (9), observing the change condition of the water level in each detection interval (91), and if the water level in a certain detection interval (91) is obviously reduced, determining the area of the continuous wall (1) corresponding to the detection interval (91) as the position of a leakage point so as to reduce the position range of the leakage point of the continuous wall (1);
step S6: pumping out water in the detection groove (9), then taking out the partition plates (10) in the detection groove (9), reserving the two partition plates (10) at two sides of the detection interval (91) corresponding to the leakage point position of the continuous wall (1), and backfilling the rest intervals of the detection groove (9) except the detection interval (91) corresponding to the leakage point position of the continuous wall (1) with soil;
step S7: and (3) gradually filling water towards the last reserved detection interval (91), standing for a period of time after each water filling, observing the change condition of the water level, and determining the position of the continuous wall (1) corresponding to the height of the water level as the final leakage point position if the water level is obviously reduced for a certain time.
2. The method for detecting the position of the leakage point of the underground concrete diaphragm wall according to claim 1, which is characterized in that: in the step S1, after the primary exploration well (2) is dug, polyurethane (8) is injected into the periphery of the primary exploration well (2) on the side opposite to the continuous wall (1) to seal a water source for a short time.
3. The method for detecting the position of the leakage point of the underground concrete diaphragm wall according to claim 1, which is characterized in that: in the step S1, after the primary exploration well (2) is dug, a layer of waterproof coiled material (3) is laid on the inner wall of the primary exploration well (2) on the side opposite to the continuous wall (1).
4. The method for detecting the position of the leakage point of the underground concrete diaphragm wall according to claim 3, which is characterized in that: the underground of reconnaissance well (2) is close to the position of waterproofing membrane (3) and sets up down anchor ring (5), waterproofing membrane (3) are last to be pasted and are being in tight state and tie area (6), the lower extreme of tying area (6) is connected under on anchor ring (5), sets up anchor ring (4) on reconnaissance well (2) ground of diaphragm wall (1) one side dorsad, the upper end of tying area (6) is connected on last anchor ring (4).
5. The method for detecting the position of the leakage point of the underground concrete diaphragm wall according to claim 1, which is characterized in that: in the step S4, after the detection groove (9) is dug, before the partition board (10) is installed, continuous mounting grooves (92) are dug along the groove walls and the groove bottoms on the two sides of the detection groove (9), a plurality of mounting grooves (92) are dug in the detection groove (9) in total to allow a plurality of partition boards (10) to be installed respectively, and after the partition boards (10) are placed in the mounting grooves (92), concrete (11) is poured into gaps between the partition boards (10) and the groove walls of the mounting grooves (92).
6. The method for detecting the position of the leakage point of the underground concrete continuous wall according to claim 5, wherein the method comprises the following steps: after the installation groove (92) is dug, the isolation cloth (12) is paved on the wall of the installation groove (92), two sides of the isolation cloth (12) extend to be attached to the inner wall of the detection groove (9), then the partition plate (10) is placed into the installation groove (92), and concrete (11) is poured between the partition plate (10) and the isolation cloth (12).
7. The method for detecting the position of the leakage point of the underground concrete diaphragm wall according to claim 1, which is characterized in that: in the step S6, the soil backfilled in the rest intervals of the detection groove (9) except the detection interval (91) corresponding to the leakage point position of the continuous wall (1) is backfilled by the soil with better soil quality and dried, and the soil is backfilled layer by layer and tamped layer by layer.
8. The method for detecting the position of the leakage point of the underground concrete diaphragm wall according to claim 1, which is characterized in that: in step S7, be provided with water level observation mechanism (13) that makes things convenient for the constructor to observe the water level situation of change in the detection interval (91) that remains at last, water level observation mechanism (13) are including being located fixed montant (131) of detection interval (91), the lower extreme of fixed montant (131) is fixed in on the diapire of detection interval (91), the upper end of fixed montant (131) extends detection interval (91), still be provided with movable float rod (132) that parallel with fixed montant (131) in detection interval (91), the lower extreme of activity float rod (132) is provided with movable floater (133), be provided with on fixed montant (131) and establish the guide ring (134) that the cover led to movable float rod (132) outside in movable float rod (132).
9. The method for detecting the position of the leakage point of the underground concrete continuous wall according to claim 8, wherein the method comprises the following steps: the upper end of the fixed vertical rod (131) is provided with an observation plate (135) extending to the movable floating rod (132), a notch (1351) for the movable floating rod (132) to slide through is formed in the observation plate (135), and a scale line (1321) is arranged on the outer wall of the movable floating rod (132).
10. The method for detecting the position of the leakage point of the underground concrete diaphragm wall according to claim 9, which is characterized in that: the upper end of the movable floating rod (132) is provided with an anti-falling head (136) which is abutted against the observation plate (135).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110561244.7A CN113203527B (en) | 2021-05-22 | 2021-05-22 | Method for detecting leakage point position of underground concrete continuous wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110561244.7A CN113203527B (en) | 2021-05-22 | 2021-05-22 | Method for detecting leakage point position of underground concrete continuous wall |
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| Publication Number | Publication Date |
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| CN113203527A true CN113203527A (en) | 2021-08-03 |
| CN113203527B CN113203527B (en) | 2021-12-24 |
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| CN114526870A (en) * | 2022-02-22 | 2022-05-24 | 江西省水利科学院 | Nondestructive detection device and detection method for dam cut-off wall |
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