Long and narrow deep foundation pit detection structure based on inclinometer and construction method

Abstract

The invention discloses a long and narrow deep foundation pit detection structure based on an inclinometer and a construction method, and relates to the technical field of foundation pit construction and foundation pit shoring. Crown beams are arranged above the foundation pit shoring, a concrete beam is horizontally arranged between the crown beams, and a deep foundation pit is formed in the position, between the foundation pit shoring, below the concrete beam; a waist beam is arranged in the side wall of the deep foundation pit below the top beam, a detection structure is arranged on the side, away from the deep foundation pit, of the foundation pit support, a traction mechanism is arranged at one end of the detection structure, a measurement hole groove is formed in the side, away from the deep foundation pit, of the secant pile, and the detection structure is placed in the measurement hole groove. And the traction mechanism pulls the detection structure to move in the measurement hole groove. The traction mechanism pulls the detection structure upwards, the inclination degree of the foundation pit support is detected once every a certain distance, the steel pipe support is erected at the inclination position of the foundation pit support, and the foundation pit support is prevented from inclining and collapsing to cause collapse of the foundation pit.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit construction, and in particular to a narrow and long deep foundation pit detection structure and a construction method based on an inclinometer. Background Art

[0002] Pit supports are set up on both sides of the narrow and deep pit to reinforce the side walls of the pit and prevent the pit from collapsing. However, due to the large depth of the pit, the pit supports at some locations will tilt in the direction of the pit, and there is a risk of pit collapse caused by the collapse of the pit supports.

[0003] With respect to the above-mentioned related technologies, the inventors believe that when the foundation pit depth is too large, the foundation pit supports around the foundation pit will tilt, and the foundation pit supports at the tilted position need to be reinforced to prevent the foundation pit from collapsing. Summary of the invention

[0004] The first purpose of the present application is to provide a narrow and long deep foundation pit detection structure and construction method based on an inclinometer, so as to improve the problem of supporting the foundation pit support at the corresponding inclined position after the foundation pit support is tilted.

[0005] The present application provides a narrow and long deep foundation pit detection structure and construction method based on an inclinometer, which adopts the following technical solutions: It includes a foundation pit support, wherein a crown beam is arranged above the foundation pit support, concrete beams are arranged horizontally between the crown beams, a foundation pit is opened below the concrete beams and between the foundation pit supports, a waist beam is arranged in the side wall of the deep foundation pit below the crown beam, a detection structure is arranged on the side of the foundation pit support away from the foundation pit, a traction mechanism is arranged at one end of the detection structure, a measuring hole groove is opened on the side of the interlocking pile away from the foundation pit, the detection structure is placed in the measuring hole groove, and the traction mechanism pulls the detection structure to move in the measuring hole groove.

[0006] By adopting the above technical scheme, a measuring hole groove is set on the side of the foundation pit support away from the foundation pit, and the detection structure is set in the measuring hole groove. The detection structure is lowered to the bottom of the measuring hole groove by a traction mechanism, and then the traction mechanism lifts the detection structure upward. The detection structure is inspected once every certain distance, and the side wall of the foundation pit is reinforced by the measured data. A steel pipe support is set on the waist beam at the inclined position of the side wall of the foundation pit to support the side wall of the foundation pit, so as to prevent the side wall of the foundation pit from tilting into the foundation pit due to too deep excavation of the foundation pit and prevent the foundation pit from collapsing.

[0007] Optionally, a concrete pile is provided in the measuring hole groove, a detection tube is provided in the concrete pile, the detection structure includes a detection rod, the detection rod is provided in the detection tube, the detection rod is flexibly electrically connected to an inclinometer, the inclinometer is provided on a side of the foundation pit support away from the foundation pit, a traction rope is provided on the top of the detection rod, and the traction rope is connected to the traction mechanism.

[0008] By adopting the above technical scheme, concrete piles are set in the measuring hole grooves, and detection tubes are pre-buried in the concrete piles. The detection rod is lowered to the bottom of the connecting groove through a traction rope, and the detection rod is pulled upward through the traction rope by a traction mechanism. The detection rod is tested once after a certain distance, and the data is transmitted back to the inclinometer. The inclination degree of the side wall of the foundation pit is judged by the data measured by the detection rod. When the inclination degree of the side wall of the foundation pit exceeds the safety threshold, a supporting steel pipe is set on the waist beam of the foundation pit support to support the foundation pit support to prevent the side wall of the foundation pit from tilting and collapsing.

[0009] Optionally, the traction mechanism includes a winch, which is arranged on a side of the concrete pile away from the foundation pit support. The winch winds up the traction rope to pull the detection rod to move, and a horizontal guide wheel is provided on the side of the concrete pile close to the winch to guide the traction rope to the winch.

[0010] By adopting the above technical solution, the horizontal guide wheel is set on the concrete on the side close to the winch, the traction rope connected to the detection rod is passed around the horizontal guide wheel and connected to the winch, and the traction rope is horizontally guided to the winch to prevent the traction rope from being directly connected to the winch. When the winch reels in the traction rope, friction is generated between the traction rope and the port of the connecting pipe, which wears the traction rope and causes the connecting rod to shake, resulting in errors in the data measured by the connecting rod.

[0011] Optionally, a fixing ring connected to a traction rope is provided at the top of the detection rod, and installation grooves are provided at both ends of the detection rod. A connecting rod is rotatably provided in the installation groove, and guide wheels are rotatably provided at both ends of the connecting rod. The guide wheels are in contact with the side walls of the detection tube, and a detection piece in contact with the connecting rod is provided in the installation groove.

[0012] By adopting the above technical scheme, a fixing ring connected to a traction rope is provided at the top of the detection rod, so that the traction rope can pull the detection rod through the fixing part to prevent the traction position of the traction rope from being misplaced when the traction rope pulls the detection rod, causing errors in the data measured by the detection rod and affecting the foundation pit construction. A connecting rod is rotatably provided in an installation groove 1 provided on the detection rod, and a guide wheel is provided on the connecting rod. The guide wheel is fitted with the side wall of the detection tube to prevent the detection rod from shaking in the detection tube, causing errors in the inclination data of the detection tube measured by the detection piece 1.

[0013] Optionally, a mounting tube is provided on the outer side wall of the port of the detection tube, a groove is provided on the inner side wall of the mounting tube, a protrusion fitting with the groove is provided on the outer side wall of the detection tube, a guide groove is provided on the inner side wall of the detection tube, the guide groove fits with a guide wheel rotatably connected to the connecting rod, and a tube cover is provided at the bottom of the detection tube.

[0014] By adopting the above technical scheme, a detection tube is preset in the concrete pile, and a mounting tube is used to connect the end of the detection tube to the next detection tube. A guide groove is opened on the detection tube to make the guide grooves of each detection tube section communicate with each other. The detection rod is lowered into the detection tube part through a guide wheel that fits with the guide groove. The guide wheel on the detection rod is guided by fitting with the guide groove to prevent the guide wheel from shifting in the detection tube and causing the detection tube to deflect, which affects the inclination of the foundation pit support measured by the detection rod.

[0015] Optionally, a push rod is provided on the detection member 1, the push rod corresponds to the detection rod, and an elastic member is provided on the push rod between the detection member 1 and the detection rod.

[0016] By adopting the above technical solution, the top rod is set between the connecting rod and the detection rod. When the foundation pit support is tilted, the concrete pile is also tilted, so that the connecting rod pushes the top rod toward the detection piece. The inclination degree of the foundation pit support is measured. The elastic part on the top rod shrinks after the top rod is pressed toward the detection piece, and a reverse force is applied to the connecting rod, so that the guide wheel connected to the detection pipe is always in contact with the guide groove, which prevents the guide wheel from being separated from the guide groove and affects the detection of the inclination degree of the foundation pit support.

[0017] Optionally, a second installation groove is provided on the detection rod between the first installation groove, a plumb rod is rotatably arranged in the second installation groove, a second detection piece is arranged in the second installation groove on the side of the plumb rod, and the second detection piece corresponds to the plumb rod.

[0018] By adopting the above technical scheme, a plumb rod is rotatably arranged in the second installation groove opened on the detection rod, and a second detection piece is arranged on the side wall of the second installation groove on the side of the plumb rod. The winch pulls the detection rod upward, and the detection rod starts to detect. When the detection rod is tilted together with the side wall of the foundation pit through the detection tube, the plumb rod is rotated on the detection rod to keep it plumb. The second detection piece detects the inclination degree of the side wall of the foundation pit through the rotation of the plumb rod. The foundation pit support at the inclined position is reinforced by the inclination degree measured by the second detection piece at different positions to prevent the inclination of the side wall of the foundation pit and cause the foundation pit to collapse.

[0019] Optionally, a detection component three is provided at one end of the detection rod away from the fixing component, the detection component three corresponds to the tube cover at the bottom of the detection tube, and the detection component three is flexibly electrically connected to the winch.

[0020] By adopting the above technical solution, the bottom of the detection tube is detected by detection component three. When the winch lowers the detection rod to the bottom of the detection tube, the detection component three contacts the bottom of the detection tube and transmits the signal back to the winch. The winch stops lowering to prevent the traction rope from being too long, which affects the detection position of the detection rod during the process of lifting the detection stem upward.

[0021] The second object of the present application is to provide a narrow and long deep foundation pit detection structure and construction method based on an inclinometer, so as to improve the problem of supporting and reinforcing the foundation pit support at the corresponding inclined position after the foundation pit support is tilted.

[0022] Drive foundation pit supports into the ground, cast cap beams on the top of the foundation pit supports, cast concrete beams between the cap beams, and excavate the foundation pit under the concrete beams; When the foundation pit is excavated to a certain depth, a waist beam is cast below the crown beam on the foundation pit support, a measuring hole is opened on the side of the crown beam away from the foundation pit support, and concrete piles are cast in the measuring hole. A detection tube is pre-buried in the concrete pile. The detection rod is placed in the detection tube to detect the inclination of the foundation pit support; When the detection rod reaches the bottom of the detection tube, the detection rod is pulled upward from the bottom of the detection tube. At intervals, the detection rod measures the inclination data of the foundation pit support. After the inspection is completed, workers install steel pipe supports on the waist beams of the foundation pit supports at corresponding positions based on the measured data to reinforce the foundation pit supports.

[0023] The reinforcement of the foundation pit support at the corresponding inclined position includes the following steps: The detection tubes are connected through the installation tubes. A guide groove is provided in the detection tubes. The guide grooves of each detection tube are connected. The detection tubes are pre-buried in the concrete piles. Place the guide wheel on the slightly higher position of the detection rod on the side close to the narrow and long deep foundation pit, fit the guide wheel on the detection rod into the guide groove, and use the traction rope to sink the detection rod into the detection tube; The detection rod is lifted upward by a winch through a traction rope. After each time the detection rod is lifted a certain distance, the foundation pit support is tested. When the foundation pit support shows signs of tilting, the guide wheel on the detection rod deflects to a position close to the detection rod, so that the detection member 2 pushes the top rod through the detection rod to measure the displacement of the detection rod. After the detection rod tilts, the plumb rod in the detection rod rotates to a position close to the detection piece 1, so that the plumb rod always remains plumb. The detection piece 1 monitors the foundation pit support through the tilt angle of the plumb rod. After detecting that the foundation pit support is tilted, the workers are notified to set up steel pipe supports to reinforce the tilted part of the foundation pit support.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Set a measuring hole groove on the side of the foundation pit support away from the foundation pit, set the detection structure in the measuring hole groove, lower the detection structure to the bottom of the measuring hole groove through the traction mechanism, and then lift the detection structure upwards by the traction mechanism. Perform a detection on the detection structure every certain distance, reinforce the side wall of the foundation pit based on the measured data, set up a steel pipe support on the waist beam at the inclined position of the side wall of the foundation pit to support the side wall of the foundation pit, prevent the side wall of the foundation pit from tilting into the foundation pit due to too deep excavation of the foundation pit, and prevent the foundation pit from collapsing; 2. A fixing ring is arranged at the top of the detection rod to connect with the traction rope, so that the traction rope can pull the detection rod through the fixing piece to prevent the traction position of the traction rope from being misaligned when the traction rope pulls the detection rod, causing errors in the data measured by the detection rod and affecting the foundation pit construction. A connecting rod is rotatably arranged in the installation groove 1 provided on the detection rod, and a guide wheel is arranged on the connecting rod. The guide wheel fits with the guide groove provided on the side wall of the detection tube to prevent the detection rod from shaking and deviating in the detection tube, causing errors in the inclination data of the foundation pit support measured by the detection piece 1; 3. A plumb rod is rotated and installed in the second installation slot opened on the detection rod, and a second detection piece is installed on the side wall of the second installation slot on the side of the plumb rod. The winch pulls the detection rod upward, and the detection rod starts to detect. When the detection rod is tilted together with the side wall of the foundation pit through the detection tube, the plumb rod is rotated on the detection rod to keep it plumb. The second detection piece detects the inclination degree of the side wall of the foundation pit through the rotation of the plumb rod. The foundation pit support at the inclined position is reinforced through the inclination degree measured by the detection piece at different positions to prevent the inclination of the side wall of the foundation pit and cause the foundation pit to collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall schematic diagram of a narrow and long deep foundation pit detection structure and construction method based on an inclinometer.

[0026] Figure 2 It is a partial cross-sectional view of the detection structure.

[0027] Figure 3 yes Figure 2 A partial enlarged view of middle A.

[0028] Figure 4 yes Figure 3 A partial enlarged view of B.

[0029] In the figure, 1. foundation pit support; 12. crown beam; 13. waist beam; 14. concrete beam; 15. steel pipe support; 2. foundation pit; 3. detection structure; 31. detection rod; 312. installation slot one; 313. connecting rod; 314. guide wheel; 315. detection piece one; 32. inclinometer; 4. traction mechanism; 41. traction rope; 42. winch; 43. horizontal guide wheel; 5. measuring hole slot; 51. concrete pile; 511. detection tube; 512. installation tube; 513. groove; 514. protrusion; 515. guide slot; 516. pipe cover; 6. top rod; 61. elastic piece; 7. installation slot two; 71. plumb rod; 72. detection piece two; 8. detection piece three; 9. fixing ring. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0031] Embodiment 1 A narrow and long deep foundation pit detection structure and construction method based on an inclinometer, referring to Figures 1 to 3 , concrete interlocking piles are driven into the ground, and a foundation pit support 1 is formed by connecting concrete interlocking piles, a crown beam 12 is cast above the foundation pit support 1, and a concrete beam 14 is cast between the crown beams 12 to support the crown beam 12, and then the narrow and long deep foundation pit 2 is excavated, and a waist beam 13 is cast with concrete on the foundation pit support 1 below the crown beam 12, and a measuring hole groove 5 is opened on the side of the crown beam 12 away from the narrow and long deep foundation pit 2 by a drilling machine, a pipe cover 516 is clamped at the bottom end of the detection tube 511, and a waterproof rubber is arranged between the pipe cover 516 and the bottom end of the detection tube 511 to prevent moisture from entering the detection tube 511, and a mounting tube 512 is connected to the other end of the detection tube 511 by a water-blocking bolt, and a recess is opened on the inner wall of the mounting tube 512 Groove 513, a protrusion 514 that fits with the groove 513 is integrally formed on the detection tube 511, the detection tube 511 is a plastic inclinometer tube, and the protrusion 514 is a fixing block on the plastic inclinometer tube. The plastic inclinometer tube is tied together with the casting steel cage, and the concrete pile 51 is cast to ensure that the detection tube 511 will not be deformed or twisted during the casting process. The detection rod 31 is placed in the detection tube 511, and the detection rod 31 is connected to the inclinometer 32 through a cable. A fixing ring 9 is fixed on the top of the detection rod 31 with bolts, and a traction rope 41 is tied to the fixing ring 9 to prevent the cable from interfering with the traction rope 41. The detection rod 31 and the detection rod 31 are lowered to the bottom of the detection tube 511 through the traction rope 41, and the traction rope 41 is reeled up by the winch 42.

[0032] Reference Figures 1 to 3The bottom end of the detection rod 31 is fixed with a detection piece 3 8 by screws. The detection piece 3 8 is a pressure sensor. After the detection rod 31 is lowered to the bottom of the detection tube 511, the pressure sensor contacts the tube cover 516, and the pressure sensor transmits a signal back to the winch 42. The winch 42 stops lowering the traction rope 41. A guide groove 515 is provided on the inner wall of the detection tube 511. An installation groove 1 312 is provided at both ends of the detection rod 31. A connecting rod 313 is rotatably arranged in the installation groove 1 312 through a bearing and a rotating shaft. A guide wheel 314 is rotatably arranged on the connecting rod 313 through a bearing. The guide wheel 314 on the side of the detection rod 31 close to the foundation pit 2 is higher than the guide wheel 314 on the side away from the foundation pit 2. The guide wheel 314 fits with the guide groove 515 provided on the inner wall of the detection tube 511.

[0033] Reference Figures 1 to 4 The push rod 6 is connected to the detection piece 315. The detection piece 315 is fixed in the installation groove 312 by screws. The detection piece 315 is a tilt sensor. The push rod 6 is connected to the detection piece 315 to measure the inclination of the detection tube 511. The push rod 6 and the connecting rod 313 are against each other. After the detection tube 511 is tilted with the concrete pile 51, the detection rod 31 is pulled upward, and the guide wheel 314 will deviate in the direction of the detection rod 31, and the connecting rod 313 presses the push rod 6 toward the detection piece 31. 5. To measure the inclination of the detection tube 511, an elastic member 61 is provided on the top rod 6. The elastic member 61 is a reset spring. When the guide wheel 314 and the connecting rod 313 deviate toward the detection rod 31, the reset spring contracts and applies a reverse force to the connecting rod 313, so that the guide wheel 314 fits tightly with the guide groove 515 on the detection tube 511, preventing the guide wheel 314 from being separated from the guide groove 515, causing deviations in the data obtained by the inclinometer 32, and causing obstacles to the subsequent construction of the deep foundation pit 2.

[0034] Reference Figures 1 to 4 A mounting groove 2 7 is provided between the mounting groove 1 312 on the detection rod 31, a spherical slot is provided at the top of the mounting groove 2 7, a plumb rod 71 is connected in the slot by a spherical rotating member, and a detection member 2 72 is fixed to the side wall of the mounting groove 2 7 around the plumb rod 71 with screws. The detection member 2 72 is a tilt sensor, which measures the tilt degree of the concrete pile 51 outside the detection tube 511 by measuring the angle of the plumb rod 71 before and after tilting, and transmits the measured data back to the inclinometer 32. The workers support and reinforce the foundation pit support 1 at the corresponding position through the data on the inclinometer 32 to prevent the foundation pit 2 support 1 from tilting and collapsing, causing the narrow and long deep foundation pit 2 to collapse.

[0035] Embodiment 2 S100, driving a foundation pit support 1 into the ground, casting a crown beam 12 on the top of the foundation pit support 1, casting a concrete beam 14 on the crown beam 12, and excavating a narrow and long deep foundation pit 2 under the concrete beam 14; S200, when the narrow and long deep foundation pit 2 is excavated to a certain depth, a waist beam 13 is cast below the crown beam 12 on the foundation pit support 1, a measuring hole groove 5 is opened on the side of the crown beam 12 away from the foundation pit support 1, a concrete pile 51 is cast in the measuring hole groove 5, a detection tube 511 is pre-buried in the concrete pile 51, a detection rod 31 is placed in the detection tube 511, and the detection rod is connected to the inclinometer 32 through a cable to detect the inclination of the foundation pit 2 support 1; S210, the detection tube 511 is connected through the installation tube 512, the groove 513 on the installation tube 512 is connected to the protrusion 514 on the outer wall of the detection tube 511, the detection tube 511 is provided with a guide groove 515, the guide grooves 515 of each detection tube 511 are connected, and the detection tube 511 is pre-buried in the concrete pile 51; S220, placing the guide wheel 314 at a slightly higher position on the detection rod 31 on a side close to the narrow and long deep foundation pit 2, fitting the guide wheel 314 on the detection rod 31 with the guide groove 515, and using the traction rope 41 to sink the detection rod 31 into the detection tube 511; S300, when the detection rod 31 reaches the bottom of the continuous detection tube, the detection rod 31 is pulled upward from the bottom of the detection tube 511, and the detection rod 31 measures the inclination data of the side wall at intervals; S310, the detection rod 31 is lifted upward by the traction rope 41 using the winch 42. After each time the detection rod 31 is lifted a certain distance, the side wall of the foundation pit 2 is inspected. When the side wall of the foundation pit 2 shows signs of tilting, the guide wheel 314 on the detection rod 31 deflects toward a position close to the detection rod 31, pushing the top rod 6 toward the second detection member 72. The second detection member 72 measures the displacement of the detection rod 31 through the movement of the top rod 6. S320, after the detection rod 31 is tilted, the plumb rod 71 rotatably connected in the mounting groove 2 7 in the detection rod 31 is rotated to a position close to the detection member 1 315, so that the plumb rod 71 is always kept plumb. The detection member 1 315 monitors the tilt degree of the foundation pit support 1 through the tilt angle of the plumb rod 71. After the detection member 1 315 detects that the tilt degree of the foundation pit support 1 is too large, the workers are notified to set up the steel pipe support 15 to support and reinforce the tilted part of the foundation pit support 1; S400, after the detection is completed, when the horizontal inclination of the foundation pit support 1 is too large, the workers install the steel pipe support 15 on the waist beam 13 on the foundation pit support 1 at the corresponding position according to the measured data, and reinforce the foundation pit support 1 to prevent the foundation pit support 1 from collapsing.

[0036] The implementation principle of the embodiment of the present application is: A measuring hole 5 is opened by a drilling machine on the side of the foundation pit support 1 away from the foundation pit 2, and a concrete pile 51 is cast in the measuring hole 5. A detection tube 511 connected by a mounting tube 512 is pre-buried in the concrete pile 51. The detection rod 31 of the inclinometer 32 is placed in the detection tube 511, and the guide wheel 314 at a slightly higher position on the detection rod 31 fits with the guide groove 515 close to the side of the foundation pit 2. The winch 42 releases the traction rope 41 to lower the detection rod 31 to the bottom of the detection tube 511. The detection member 38 contacts the bottom of the detection tube 511 to generate a signal, and the winch 42 stops lowering. Then the winch 42 starts to reel in the traction rope 41 to lift the detection rod 31 upward, and a detection is performed every 200 meters. When the detection tube 511 is tilted, the guide wheel 314 on the detection rod 31 fits with the guide groove 515 on the detection tube 511. After the detection tube 511 is tilted, the connecting rod 313 and the guide wheel 314 are offset toward the detection rod 31, so that the connecting rod 313 presses the top rod 6 toward the detection piece 2 72, and the inclination of the detection rod 31 is detected. The plumb rod 71 on the detection stem is offset and kept plumb again. The detection piece 1 315 measures the inclination angle of the detection rod 31 according to the deflection of the plumb rod 71. The detection rod 31 is detected on one side at intervals to detect the degree of inclination at different heights. The workers use the data on the inclinometer 32 to reinforce the foundation pit support 1 at the corresponding position to prevent the foundation pit support 1 from tilting and collapsing, and to prevent the foundation pit 2 from collapsing.

[0037] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A narrow and long deep foundation pit detection structure based on an inclinometer, comprising a foundation pit support (1), a crown beam (12) is arranged above the foundation pit support (1), a concrete beam (14) is arranged horizontally between the crown beams (12), a foundation pit (2) is opened between the foundation pit supports (1) below the concrete beams (14), a waist beam (13) is arranged in the side wall of the foundation pit (2) below the crown beam (12), and the characteristics are: A detection structure (3) is provided on a side of the foundation pit support (1) away from the deep foundation pit (2), a traction mechanism (4) is provided at one end of the detection structure (3), a measuring hole groove (5) is provided on a side of the engaging pile away from the foundation pit (2), the detection structure (3) is placed in the measuring hole groove (5), and the traction mechanism (4) tractions the detection structure (3) to move in the measuring hole groove (5).

2. According to claim 1, a narrow and long deep foundation pit detection structure based on an inclinometer is characterized in that: A concrete pile (51) is arranged in the measuring hole groove (5), a detection tube (511) is arranged in the concrete pile (51), the detection structure (3) comprises a detection rod (31), the detection rod (31) is arranged in the detection tube (511), the detection rod (31) is flexibly electrically connected to an inclinometer (32), the inclinometer (32) is arranged on a side of the foundation pit support (1) away from the foundation pit (2), a traction rope (41) is arranged at the top of the detection rod (31), and the traction rope (41) is connected to the traction mechanism (4).

3. The narrow and long deep foundation pit detection structure based on an inclinometer according to claim 1 is characterized in that: The traction mechanism (4) comprises a winch (42), the winch (42) being arranged on a side of the concrete pile (51) away from the foundation pit support (1), the winch (42) winding up the traction rope (41) to traction the detection rod (31) to move, and a horizontal guide wheel (43) for guiding the traction rope (41) to the winch (42) is arranged on a side of the concrete pile (51) close to the winch (42).

4. The narrow and long deep foundation pit detection structure based on an inclinometer according to claim 2 is characterized in that: A fixing ring (9) connected to a traction rope (41) is arranged at the top end of the detection rod (31), and mounting grooves (312) are provided at both ends of the detection rod (31), a connecting rod (313) is rotatably arranged in the mounting groove (312), guide wheels (314) are rotatably arranged at both ends of the connecting rod (313), the guide wheels (314) are in contact with the side wall of the detection tube (511), and a detection member (315) in contact with the connecting rod (313) is arranged in the mounting groove (312).

5. The narrow and long deep foundation pit detection structure based on the inclinometer according to claim 4 is characterized in that: The outer side wall of the port of the detection tube (511) is provided with a mounting tube (512), the inner side wall of the mounting tube (512) is provided with a groove (513), the outer side wall of the detection tube (511) is provided with a protrusion (514) that fits with the groove (513), the inner side wall of the detection tube (511) is provided with a guide groove (515), the guide groove (515) fits with a guide wheel (314) rotatably connected to the connecting rod (313), and the bottom of the detection tube (511) is provided with a tube cover (516).

6. The narrow and long deep foundation pit detection structure based on an inclinometer according to claim 4, characterized in that: The detection member 1 (315) is provided with a push rod (6), the push rod (6) corresponds to the detection rod (31), and an elastic member (61) is provided on the push rod (6) between the detection member 1 (315) and the detection rod (31).

7. The narrow and long deep foundation pit detection structure based on an inclinometer according to claim 4 is characterized in that: The detection rod (31) is provided with a second installation groove (7) between the first installation groove (312), a plumb rod (71) is rotatably arranged in the second installation groove (7), a second detection member (72) is arranged in the second installation groove (7) on the side of the plumb rod (71), and the second detection member (72) corresponds to the plumb rod (71).

8. The narrow and long deep foundation pit detection structure based on an inclinometer according to claim 4 is characterized in that: The detection rod (31) is provided with a detection member three (8) at one end away from the fixing member, the detection member three (8) corresponds to the tube cover (516) at the bottom of the detection tube (511), and the detection member three (8) is flexibly electrically connected to the winch (42).

9. A method for constructing a narrow and deep foundation pit based on an inclinometer, characterized in that: A narrow and long deep foundation pit detection structure based on an inclinometer as described in any one of claims 1 to 8, S100, driving a foundation pit support (1) into the ground, casting a crown beam (12) on the top of the foundation pit support (1), casting a concrete beam (14) between the crown beams (12), and excavating a foundation pit (2) below the concrete beams (14); S200, when the foundation pit (2) is excavated to a certain depth, a waist beam (13) is cast on the foundation pit support (1) below the crown beam (12), a measuring hole groove (5) is opened on the side of the crown beam (12) away from the foundation pit support (1), a concrete pile (51) is cast in the measuring hole groove (5), a detection tube (511) is pre-buried in the concrete pile (51), a detection rod (31) is placed in the detection tube (511), and the inclination of the foundation pit (2) support (1) is detected; S300, when the detection rod (31) reaches the bottom of the detection tube (511), the detection rod (31) is pulled upward from the bottom of the detection tube (511), and the detection rod (31) measures the inclination data of the foundation pit support (1) once every certain distance; S400, after the detection is completed, the worker installs the steel pipe support (15) on the waist beam (13) on the foundation pit support (1) at the corresponding position according to the measured data, and reinforces the foundation pit (2) support (1).

10. The method for constructing a narrow and deep foundation pit based on an inclinometer according to claim 9, characterized in that: S210, connecting the detection tube (511) through the installation tube (512), wherein a guide groove (515) is provided in the detection tube (511), and the guide grooves (515) of each detection tube (511) are connected to each other, and the detection tube (511) is pre-buried in the concrete pile (51); S220, placing the guide wheel (314) at a slightly higher position on the detection rod (31) on a side close to the narrow and long deep foundation pit (2), fitting the guide wheel (314) on the detection rod (31) with the guide groove (515), and using the traction rope (41) to sink the detection rod (31) into the detection tube (511); S310, using a winch (42) to lift the detection rod (31) upwards through the traction rope (41), and after each time the detection rod (31) is lifted a certain distance, the foundation pit support (1) is tested once, and when the foundation pit support (1) shows signs of tilting, the guide wheel (314) on the detection rod (31) deflects to a position close to the detection rod (31), so that the detection member 2 (72) pushes the top rod (6) through the detection rod (31), and measures the displacement of the detection rod (31); S320, after the detection rod (31) tilts, the plumb rod (71) in the detection rod (31) rotates to a position close to the detection member 1 (315), so that the plumb rod (71) always remains plumb. The detection member 1 (315) monitors the foundation pit support (1) through the tilt angle of the plumb rod (71). After detecting that the foundation pit support (1) tilts, the workers are notified to set up steel pipe supports (15) to support and reinforce the tilted part of the foundation pit support (1).

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