CN211523307U

CN211523307U - Inclinometer tube for monitoring horizontal displacement

Info

Publication number: CN211523307U
Application number: CN201922369087.0U
Authority: CN
Inventors: 朱宇
Original assignee: Sichuan Lugong Engineering Co ltd
Current assignee: Sichuan Lugong Engineering Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-18
Anticipated expiration: 2029-12-25

Abstract

The utility model belongs to the technical field of deep foundation ditch enclosure body deep level displacement monitoring technique and specifically relates to a deviational survey pipe is used in horizontal displacement monitoring is related to, it includes deviational survey pipe body and protective case, protective case passes through the connecting piece and connects in deviational survey pipe body mouth of pipe, protective case sets up and is provided with the visor in the one end that the lateral inclination body was kept away from to this mouth of pipe protective case of deviational survey pipe, be provided with on the protective case and be the observation hole that runs through the setting, be provided with the recess that baffle and confession baffle holding on the protective case, be provided with on the baffle and be the through-hole that runs through the setting, be provided with the mounting that will be used for fixed stop between baffle and the recess, the recess sets up towards a side surface of protective case, be provided with. It can block debris at the concrete placement in-process, and then solves the problem that the deviational survey pipe easily blockked up.

Description

Inclinometer tube for monitoring horizontal displacement

Technical Field

The utility model belongs to the technical field of the deep horizontal displacement monitoring of deep basal pit enclosure body and specifically relates to a deviational survey pipe is used in horizontal displacement monitoring.

Background

The monitoring of the deep horizontal displacement of the deep foundation pit enclosure is an important monitoring means in the monitoring of the deep foundation pit, and the inclinometer is generally embedded in the enclosure, and is used for measuring and calculating the horizontal displacement at different depths of the enclosure so as to reflect the deformation condition of the foundation pit enclosure, so that the survival rate of embedding the inclinometer directly influences the test result.

For example, chinese patent publication No. CN107677244A discloses a full-automatic inclinometer, which includes an inclinometer tube, four vertical guide grooves are equidistantly formed in an inner wall of the inclinometer tube, four driving devices for driving the inclinometer probe to slide along the four guide grooves are disposed on the inclinometer probe, and the inclinometer probe is further provided with a control circuit for controlling the driving of the driving devices and a recording system for recording inclinometer data. In the working process of the inclinometer, the worker does not need to hold the connecting wire to move the inclinometer probe, so that the transportation and the use of the inclinometer are simplified, and the measurement of the soil layer structure by the worker is facilitated to a certain extent.

The technical scheme has the following defects: in the actual concrete pouring process, sundries can fall into the pipe from the pipe orifice of the inclinometer pipe, so that the inclinometer pipe is easily blocked, and the data error measured after the probe enters the inclinometer pipe influences the measurement precision, so that the improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a deviational survey pipe is used in horizontal displacement monitoring, it can block debris at the concrete placement in-process, and then solves the problem that the deviational survey pipe easily blockked up.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

an inclinometer tube for monitoring horizontal displacement comprises an inclinometer tube body and a protective sleeve, wherein the protective sleeve is connected with the orifice of the inclinometer tube body through a connecting piece, the protective sleeve is arranged at the orifice of the inclinometer tube body, a protective cover is arranged at one end of the protective sleeve, which is far away from the side inclinometer tube body, an observation hole which is arranged in a penetrating way is arranged on the protective cover, a baffle and a groove for accommodating the baffle are arranged on the protective cover, a through hole which is arranged in a penetrating way is arranged on the baffle, a fixing piece for fixing the baffle is arranged between the baffle and the groove, the groove is arranged towards one side surface of the protective sleeve, a locking component for locking and unlocking the protective cover is arranged between the protective cover and the protective sleeve, the locking component comprises a pressing block and a spring, and the protective cover is provided with an inserting block, protective case mouth of pipe department be provided with the slot that the visor corresponds, the inserted block with the slot cooperation of pegging graft, the inserted block is kept away from a side surface of recess is provided with and supplies to press the locating hole that the briquetting stretches out and retract, the spring set up in the locating hole, just the both ends of spring respectively fixed connection in locating hole bottom and press the briquetting orientation the one end of locating hole bottom, the slot is kept away from a cell wall of baffle is provided with the jack, works as the jack is aimed at during the locating hole, press the briquetting and be used for stretching out and retracting the jack.

By adopting the technical scheme, the protective sleeve is additionally arranged to effectively protect the inclinometer pipe, so that the abrasion of the probe roller to the pipe orifice of the inclinometer pipe body is reduced; the protective cover is additionally arranged to block sundries, so that the sundries are not easy to fall into the inclination measuring pipe body to cause blockage; the locking assembly is additionally arranged, so that workers can conveniently install and detach the protective cover, and the pipe orifice can be opened and closed conveniently; when the protective cover needs to be detached to open the inclinometer pipe body, the pressing block is pressed to retract the pressing block into the jack, and the inserting block is separated from the inserting slot; when the protective cover needs to be installed to close the pipe orifice of the inclinometer pipe body, the insertion block is in insertion fit with the insertion slot, the insertion hole is aligned with the positioning hole, and the pressing block extends out of the insertion hole to lock the protective cover.

The present invention may be further configured in a preferred embodiment as: the fixing piece is a fixture block, the fixture block is connected to the side wall of the baffle, sliding grooves corresponding to the fixture block are formed in the wall of the groove, each sliding groove is formed in the groove opening in the height direction of the groove, each fixture block is connected with the corresponding sliding groove in a sliding mode, the through holes are aligned with the observation holes, an arc-shaped groove is horizontally formed in the bottom of each sliding groove, each arc-shaped groove is communicated with the corresponding sliding groove, when the fixture block slides to the communication position of the arc-shaped groove and the corresponding sliding groove through the corresponding sliding groove, the fixture block is rotated to be in clamping fit with the arc-shaped groove, and the through holes are staggered with the observation holes.

By adopting the technical scheme, the observation hole and the through hole are additionally arranged, so that a worker can observe the measurement condition in the inclinometer tube body conveniently; when the clamping block slides in the sliding groove, the through hole is aligned with the observation hole, so that a worker can conveniently observe the conditions in the inclinometer pipe body and the protective sleeve; when the rotating baffle plate enables the clamping block to be matched with the arc-shaped groove in a clamped mode, the through hole is staggered with the observation hole, observation is further conducted to be closed, the sundries are blocked, and the sundries are not prone to entering the protective sleeve from the observation hole and blocking the inclinometer body.

The present invention may be further configured in a preferred embodiment as: the baffle is kept away from one side surface of protective case can dismantle and be connected with the locating lever, the other end of locating lever runs through the recess tank bottom and stretches out outside the visor.

By adopting the technical scheme, the positioning rod is detachably connected with the baffle plate, so that a worker can conveniently clean sundries accumulated on the baffle plate; the baffle is far away from or abutted against the bottom of the groove by moving the positioning rod, so that the observation hole is opened and closed; when needs will observe the hole and close, remove the locating lever and make the baffle conflict in the recess tank bottom, when needs will observe the hole and close, remove the locating lever and make the baffle keep away from the recess tank bottom.

The present invention may be further configured in a preferred embodiment as: and a limiting block used for limiting the moving position of the positioning rod is fixedly sleeved at one end, extending out of the positioning rod.

Through adopting above-mentioned technical scheme, the setting of stopper has played limiting displacement, and to observe the hole and open as required, the baffle slides in the spout after breaking away from the arc wall, contradicts in the visor when the stopper, and the fixture block no longer slides downwards, and then can be to intraductal stable water injection.

The present invention may be further configured in a preferred embodiment as: the handle is detachably connected to one end, extending out of the positioning rod.

Through adopting above-mentioned technical scheme, the staff of being convenient for of setting up of handle removes or rotates the locating lever.

The present invention may be further configured in a preferred embodiment as: and a guide post is arranged at the bottom of each positioning hole, and the spring is sleeved on the guide post.

Through adopting above-mentioned technical scheme, the setting of guide post has played the guide effect to the spring, reduces the skew of spring and walks the position.

The present invention may be further configured in a preferred embodiment as: the connecting piece is connecting sleeve, the protective case outside with the equal circumferential connection in inclinometer body outside has the direction sand grip, the connecting sleeve inboard be provided with each third guide way that the direction sand grip corresponds, the guide block with the third guide way is slided and is connected, protective case and inclinometer body respectively with be provided with between the connecting sleeve and be used for fixing connecting sleeve's fastener.

Through adopting above-mentioned technical scheme, the direction sand grip slides with the third guide way and is connected and make stable adapter sleeve of adapter sleeve slide in with the constant head tank, and the adapter sleeve installation and the dismantlement of being convenient for reduce the skew of protective case in adapter sleeve and walk the position and influence the measuring result.

The present invention may be further configured in a preferred embodiment as: the plurality of fasteners are bolts, each bolt is arranged on the outer side of the connecting sleeve along the circumferential direction of the outer side of the connecting sleeve, the guide raised line connected to the protective sleeve and the guide raised line connected to the inclinometer pipe body are provided with threaded holes corresponding to the bolts, and the bolts are in threaded connection with the corresponding threaded holes.

Through adopting above-mentioned technical scheme, bolt and screw hole threaded connection set up can fix the joint sleeve at the junction of protective case and deviational survey pipe, and then make the firm fixed of protective case and deviational survey pipe body together, have strengthened the stability between protective case and the deviational survey pipe body simultaneously.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the protective sleeve is additionally arranged to effectively protect the inclinometer, abrasion of the probe roller to the pipe orifice of the inclinometer body is reduced, the protective cover is additionally arranged to block sundries, and the locking assembly is utilized to facilitate workers to install and detach the protective cover, so that the pipe orifice is convenient to open and close, and the sundries are not easy to fall into the inclinometer body to cause blockage;

2. the observation hole and the through hole are additionally arranged, so that a worker can observe the measurement condition in the inclinometer pipe body conveniently; when the fixture block slides in the sliding groove, the through hole is aligned with the observation hole, so that a worker can conveniently observe the conditions in the inclinometer tube body and the protective sleeve, when the baffle is rotated to enable the fixture block to be clamped and matched with the arc-shaped groove, the through hole is staggered with the observation hole, so that observation is closed, the sundries are blocked, and the sundries are not easy to enter the protective sleeve from the observation hole to block the inclinometer tube body;

3. the positioning rod and the baffle plate are detachably connected, so that the working personnel can clean sundries accumulated on the baffle plate conveniently.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a schematic view of the assembly relationship between the protective cap and the protective sleeve and the connecting sleeve according to the embodiment of the present invention;

FIG. 3 is a schematic view of the assembly relationship between the shield, the protective cover and the protective sleeve according to the embodiment of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is an enlarged view of portion B of FIG. 3;

FIG. 6 is an enlarged view of portion C of FIG. 3;

fig. 7 is a schematic structural diagram of a protective cover in an embodiment of the present invention.

In the figure, 1, a protective cover; 2. protecting the sleeve; 3. connecting a sleeve; 4. a foundation pit; 5. an observation hole; 6. a handle; 7. a inclinometer tube body; 8. positioning a rod; 9. a limiting block; 10. a threaded hole; 11. a third guide groove; 12. a bolt; 13. a guide convex strip; 14. a second guide groove; 15. a first guide groove; 16. a clamping block; 17. a baffle plate; 18. a spring; 19. inserting a block; 20. a pressing block; 21. a slot; 22. a jack; 23. an elastic clamping block; 24. a clamping hole; 25. a through hole; 26. an arc-shaped slot; 27. a chute; 28. a groove; 29. a bump; 30. a guide post; 31. and (7) positioning the holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the embodiment of the utility model discloses an inclinometer for horizontal displacement monitoring, including inclinometer body 7 and protective case 2, 7 vertical fixation of inclinometer body buries underground in foundation ditch 4, detects in getting into inclinometer body 7 for the detector of being convenient for, and four first guide ways 15 have been seted up to 7 inside wall circumference of inclinometer body, and first guide way 15 sets up along the length direction of inclinometer body 7. At this time, the detector can enter the inclinometer body 7 through the first guide groove 15 and be placed downwards. Protective sleeve 2 sets up in the mouth of pipe department of deviational survey pipe body 7, and protective sleeve 2's diameter is the same with the diameter of deviational survey pipe body 7, and protective sleeve 2's bottom is contradicted and is aligned with the 7 mouths of pipe of deviational survey pipe body.

Referring to fig. 1 and 2, specifically, in order to make the inclinometer body 7 not easily worn by the detector, the inner side wall of the protective sleeve 2 is circumferentially provided with second guide grooves 14 which are in one-to-one correspondence and communicated with the first guide grooves 15, and the second guide grooves 14 are arranged along the length direction of the protective sleeve 2. Meanwhile, a connecting sleeve 3 is arranged between the protective sleeve 2 and the inclinometer body 7, and the connecting sleeve 3 is sleeved at the abutting part of the protective sleeve 2 and the inclinometer body 7. All circumference of protective case 2 lateral wall and 7 lateral walls of deviational survey pipe body are provided with direction sand grip 13, and each direction sand grip 13 respectively with protective case 2 and 7 integrated into one piece of deviational survey pipe body, preferably, third guide way 11 that corresponds with direction sand grip 13 is seted up to connecting sleeve 3's inside wall circumference, and each direction sand grip 13 slides with the third guide way 11 that corresponds and is connected, and then makes connecting sleeve 3 be difficult for the skew to walk the position. In addition, in order to fix the protective sleeve 2 and the inclinometer body 7 together, a plurality of bolts 12 are circumferentially arranged on the outer side wall of the connecting sleeve 3, threaded holes 10 corresponding to the bolts 12 are circumferentially arranged on both the guide convex strip 13 arranged on the protective sleeve 2 and the guide convex strip 13 arranged on the inclinometer body 7, and the bolts 12 penetrate through the connecting sleeve 3 and are in threaded connection with the corresponding threaded holes 10.

Referring to fig. 3 and 7, further, a cylindrical protective cover 1 is arranged at the pipe orifice of the inclinometer main body 7, and the diameter of the protective cover 1 is the same as that of the protective sleeve 2. Two observation holes 5 which run through the protective cover 1 are circumferentially arranged, and the condition in the inclinometer pipe body 7 can be observed through the observation holes 5. The protective cover 1 is provided with a baffle 17, and a groove 28 for accommodating the baffle 17 is formed in the surface of one side, facing the inclinometer body 7, of the protective cover 1. Two through holes 25 which are arranged in a penetrating way are formed in the baffle 17, and the diameter of the two through holes 25 is equal to that of the observation hole 5. Meanwhile, a plurality of block clamping blocks 16 are welded on the circumferential direction of the side wall of the baffle 17, and preferably, the number of the clamping blocks 16 is three. The inner side wall of the groove 28 is circumferentially provided with a sliding groove 27 corresponding to each fixture block 16, and each fixture block 16 is connected with the corresponding sliding groove 27 in a sliding manner. The inner side wall of the groove 28 is circumferentially provided with arc-shaped grooves 26, the arc-shaped grooves 26 correspond to the sliding grooves 27 one by one, and the arc-shaped grooves 26 are located at one end of the bottom of the sliding grooves 27 and are communicated with the sliding grooves 27. In addition, the outer side wall of the protective cover 1 is circumferentially provided with the protruding blocks 29 corresponding to the second guide grooves 14 one by one, the protruding blocks 29 are arranged along the height direction of the protective cover 1, when the protective cover 1 covers the top of the protective sleeve 2, the protruding blocks 29 cover and are arranged on the notch of the protective sleeve 2, and therefore sundries are not prone to falling into the inclinometer body 7 from the second guide grooves 14.

Referring to fig. 3 and 6, meanwhile, the baffle 17 is provided with a positioning rod 8 which is vertically arranged and a positioning hole 31 which corresponds to the positioning rod 8 and is arranged on one side of the bottom of the groove 28, and one end of the positioning rod 8, which faces the baffle 17, is in threaded connection with the positioning hole, so that sundries accumulated on the baffle 17 can be conveniently cleaned. One end of the positioning rod 8 far away from the positioning hole 31 penetrates through the bottom of the groove 28 and extends out of the protective cover 1. The extending end of the positioning rod 8 is fixedly sleeved with a limiting block 9 for limiting the moving position of the positioning rod 8. In addition, for being convenient for remove or rotate locating lever 8, the one end that locating lever 8 stretches out can be dismantled and be connected with handle 6, and handle 6 is the setting of L shape, and the one end welding of handle 6 has elasticity fixture block 2316, and the shrinkage pool that corresponds with elasticity fixture block 2316 is seted up to the one end that locating lever 8 stretches out, and elasticity fixture block 2316 cooperates with the shrinkage pool joint.

When the fixture 16 is in the sliding groove 27, the through hole 25 is aligned with the observation hole 5, and the worker can observe the inside of the protective sleeve 2 and the inclinometer body 7. When the fixture blocks 16 slide to the communication positions of the sliding grooves 27 and the arc-shaped grooves 26, the baffle 17 is rotated through the positioning rod 8, each fixture block 16 is matched with the arc-shaped groove 26, in addition, the through holes 25 are staggered with the observation holes 5, so that the observation holes 5 are closed, and further, sundries are not easy to enter the interior of the inclinometer tube body 7 from the observation holes 5.

Referring to fig. 4 and 5, in addition, the protection cover 1 is circumferentially provided with a plurality of insertion blocks 19, the plurality of insertion blocks 19 are circumferentially arranged along the notches of the grooves 28, the one end of the protection sleeve 2, which is far away from the inclinometer body 7, is circumferentially provided with insertion slots 21 corresponding to the insertion blocks 19, and each insertion block 19 is in insertion fit with the corresponding insertion slot 21, so that the protection cover 1 is preliminarily fixed on the protection sleeve 2. A locking assembly for locking and unlocking the protective cover 1 is arranged between the protective cover 1 and the protective sleeve 2, the locking assembly comprises a pressing block 20 and a spring 18, and the locking assembly comprises the pressing block 20 and the spring 18. The surface of one side of each insert block 19 away from the groove 28 is provided with a positioning hole 31 for extending and retracting the pressing block 20, the spring 18 is arranged in the positioning hole 31, and two ends of the spring 18 are fixedly connected to the bottom of the positioning hole 31 and the surface of one side of the pressing block 20 facing the bottom of the positioning hole 31. The bottom of each positioning hole 31 is welded with a guide post 30, and the spring 18 is sleeved on the guide post 30, so that the deviation and displacement of the spring 18 are reduced. Each slot 21 is kept away from a cell wall of protective case 2 inside wall and has been seted up jack 22, and jack 22 is to run through the setting, and when jack 22 and locating hole 31 aimed at, jack 22 is stretched out under the effect of spring 18 to pressing block 20, and then fixes visor 1 at protective case 2 top, and pressing block 20 retracts into jack 22, can take off visor 1 and stretch into inclinometer in the inclinometer body 7.

The implementation principle of the embodiment is as follows: when the protective cover 1 needs to be detached to open the inclinometer tube body 7, the pressing block 20 is pressed to retract the pressing block 20 into the insertion hole 22, and the insertion block 19 is separated from the insertion groove 21; when the protective cover 1 needs to be installed to close the pipe orifice of the inclinometer pipe body 7, the insertion block 19 is in insertion fit with the insertion slot 21, the insertion hole 22 is aligned with the positioning hole 31, and the pressing block 20 extends out of the insertion hole 22 to lock the protective cover 1, so that sundries can enter the inclinometer pipe body 7, and the problem that the inclinometer pipe body 7 is easy to block is solved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a deviational survey pipe is used in horizontal displacement monitoring, includes deviational survey pipe body (7) and protective case (2), its characterized in that: the protective sleeve (2) is connected with the pipe orifice of the inclinometer casing body (7) through a connecting piece, the protective sleeve (2) is arranged at the pipe orifice of the inclinometer casing body (7), one end, far away from the inclinometer casing body (7), of the protective sleeve (2) is provided with a protective cover (1), an observation hole (5) which is arranged in a penetrating way is formed in the protective cover (1), a baffle (17) and a groove (28) for accommodating the baffle (17) are arranged on the protective cover (1), a through hole (25) which is arranged in a penetrating way is formed in the baffle (17), a fixing piece for fixing the baffle (17) is arranged between the baffle (17) and the groove (28), the groove (28) faces towards one side surface of the protective sleeve (2), and a locking assembly for locking and unlocking the protective cover (1) is arranged between the protective cover (1) and the protective sleeve (2), the locking component comprises a pressing block (20) and a spring (18), the protective cover (1) is provided with an inserting block (19), the protective sleeve (2) is provided with a slot (21) corresponding to the protective cover (1) at the pipe orifice, the inserting block (19) is matched with the inserting groove (21) in an inserting mode, a positioning hole (31) for the pressing block (20) to extend out and retract is formed in the surface, far away from the groove (28), of one side of the inserting block (19), the spring (18) is arranged in the positioning hole (31), and the two ends of the spring (18) are respectively and fixedly connected with the hole bottom of the positioning hole (31) and one end of the pressing block (20) facing the hole bottom of the positioning hole, a slot wall of the slot (21) far away from the baffle (17) is provided with a jack (22), when the insertion hole (22) is aligned with the positioning hole (31), the pressing block (20) is used for extending out of and retracting into the insertion hole (22).

2. The inclinometer tube for monitoring the horizontal displacement according to claim 1, characterized in that: the fixing piece is a clamping block (16), the clamping block (16) is connected to the side wall of the baffle plate (17), the groove wall of the groove (28) is provided with a sliding groove (27) corresponding to the clamping block (16), and each sliding groove (27) is arranged along the height direction of the groove (28) from the notch of the groove (28), each clamping block (16) is connected with the sliding groove (27) in a sliding way, the through holes (25) are aligned with the observation holes (5), the bottom of each sliding groove (27) is provided with an arc-shaped groove (26) which is horizontally arranged, and each arc-shaped groove (26) is communicated with the sliding groove (27), when the clamping block (16) slides to the communication position of the arc-shaped groove (26) and the sliding groove (27) through the sliding groove (27), the fixture block (16) is rotated to be matched with the arc-shaped groove (26) in a clamping mode, and the through hole (25) and the observation hole (5) are staggered.

3. The inclinometer tube for monitoring the horizontal displacement according to claim 1, characterized in that: one side surface of the baffle (17) far away from the protective sleeve (2) is detachably connected with a positioning rod (8), and the other end of the positioning rod (8) penetrates through the bottom of the groove (28) and extends out of the protective cover (1).

4. The inclinometer tube for monitoring the horizontal displacement according to claim 3, characterized in that: and a limiting block (9) used for limiting the moving position of the positioning rod (8) is fixedly sleeved at one end, extending out of the positioning rod (8).

5. The inclinometer tube for monitoring the horizontal displacement according to claim 3, characterized in that: one end of the positioning rod (8) extending out is detachably connected with a handle (6).

6. The inclinometer tube for monitoring the horizontal displacement according to claim 1, characterized in that: and a guide column (30) is arranged at the bottom of each positioning hole (31), and the spring (18) is sleeved on the guide column (30).

7. The inclinometer tube for monitoring the horizontal displacement according to claim 1, characterized in that: the connecting piece is adapter sleeve (3), protective case (2) the outside with the equal circumferential connection in deviational survey pipe body (7) outside has direction sand grip (13), adapter sleeve (3) inboard be provided with each third guide way (11) that direction sand grip (13) correspond, direction sand grip (13) with third guide way (11) are slided and are connected, protective case (2) with deviational survey pipe body (7) respectively with be provided with between adapter sleeve (3) and be used for fixing the fastener of adapter sleeve (3).

8. The inclinometer tube for monitoring the horizontal displacement according to claim 7, characterized in that: the plurality of fasteners are bolts (12), each bolt (12) is arranged on the outer side of the connecting sleeve (3) along the outer circumferential direction of the connecting sleeve (3), a guide convex strip (13) connected to the protective sleeve (2) and a guide convex strip (13) connected to the inclinometer pipe body (7) are provided with threaded holes (10) corresponding to the bolts (12), and the bolts (12) are in threaded connection with the corresponding threaded holes (10).