CN209277184U - Deep basal pit drilling water burst emits sand seal block apparatus - Google Patents

Deep basal pit drilling water burst emits sand seal block apparatus Download PDF

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Publication number
CN209277184U
CN209277184U CN201920586887.5U CN201920586887U CN209277184U CN 209277184 U CN209277184 U CN 209277184U CN 201920586887 U CN201920586887 U CN 201920586887U CN 209277184 U CN209277184 U CN 209277184U
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China
Prior art keywords
well casing
water
bed course
deep basal
block apparatus
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Active
Application number
CN201920586887.5U
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Chinese (zh)
Inventor
焦志亮
林广宇
符亚兵
曹会
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Tianjin survey and Design Institute Group Co., Ltd
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Kanjoin In Tianjin City
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Abstract

The utility model provides deep basal pit drilling water burst and emits sand seal block apparatus, belong to engineering investigation and dewatering construction field, including bed course and the well casing extending into foundation pit drilling, setting cushion is in the lower end of base plate of foundation pit, the upper end setting of the prominent gasket in the upper end of well casing, lower end inside well casing is equipped with clay layer, clay layer is located at the lower section of bed course, the outer ring of well casing is arranged with the first sealing steel disc, first sealing steel disc is located at the upper end of bed course and the two contact setting, the upper end of clay layer is equipped with porous disc, the upper end of porous disc is equipped with water not drop ply, the top of bed course is equipped with pouring layer, the diversion pipe of release is equipped with inside the well casing, the lower end of diversion pipe is located at porous disc lower end, the upper end of diversion pipe is stretched out well casing setting and is connected to external city planting ductwork water route, diversion pipe is equipped with the switch valve of control water route on-off.The utility model structure is simple, at low cost, does not influence the normal duration of base pit engineering, avoids the influence to unit in charge of construction and construction unit.

Description

Deep basal pit drilling water burst emits sand seal block apparatus
Technical field
The utility model belongs to space enrironment prospecting field, is related to deep basal pit drilling water burst and emits sand seal block apparatus.
Background technique
With increasing for deep big foundation pit, as surveying unit be frequently encountered borehole sealing it is unfavorable caused by underground water along boring Hole preventing water phenomenon also results in biggish economic loss while bringing risk to engineering, currently encounter drilling in deep basal pit and emit water Following several measures are mainly taken when gushing sand:
1, two fluid grouting often will cause due to being to head on water pressure construction and block not tight situation, and will cause periphery The large area silting of Dewatering well, expense at least 50,000 when generally using two fluid grouting, it is serious it is possible need several times into Field can solve, and when at well construction precipitation, also differ hundreds of thousands of at well construction and later period operating cost, expense is too high;
2, emitting the Dewatering well progress precipitation of water drilling hole side can be to periphery due to needing that level of ground water is greatly reduced Environment impacts;
3, the water emerged is taken away, but the method causes hole that bed mud is muddy is difficult to construct, hole ground swell water emits water may be right Supporting construction and foundation instability.
No matter using which kind of above method, all it is difficult various drawbacks, without at low cost and practicable method.
Utility model content
Problem to be solved in the utility model is to be that providing deep basal pit drilling water burst emits sand seal block apparatus, and structure is simple, It is at low cost, the normal duration of base pit engineering is not influenced, avoids the influence to unit in charge of construction and construction unit.
In order to solve the above technical problems, the technical solution adopted in the utility model is: it is stifled that deep basal pit drilling water burst emits sand seal Device, including bed course and the well casing extending into foundation pit drilling, the setting cushion in the lower end of base plate of foundation pit, the well casing The upper end of the prominent gasket in upper end is arranged, and the lower end inside the well casing is equipped with clay layer, and the clay layer is located at the pad The lower section of layer, the outer ring of the well casing are arranged with the first sealing steel disc, and the first sealing steel disc is located at the upper end of the bed course And the two contact setting, the upper end of the clay layer are equipped with porous disc, the upper end of the porous disc is equipped with water not drop ply, the pad The top of layer is equipped with pouring layer,
The diversion pipe of release is equipped with inside well casing, the lower end of the diversion pipe is located at the porous disc lower end, described The upper end of diversion pipe is stretched out the well casing setting and is connected to external city planting ductwork water route, and the diversion pipe is equipped with control water The switch valve of road on-off.
Further, the bed course is concrete structure and thick setting.
Further, the middle part of the well casing outer ring is equipped with the second sealing steel disc, and the first sealing steel disc and second stops The structure of water steel disc is identical and horizontally disposed, and the second sealing steel disc and the first sealing steel disc are welded as a whole with the well casing Structure.
Further, the second sealing steel disc be more than or equal to well casing on the outside of 15cm.
Further, the upper end of the water not drop ply is equipped with concrete layer, and the upper end of the concrete layer is equipped with seal plate, The seal plate is located at the upper end of the well casing and the two sealed set, and the upper end of the seal plate is equipped with big compared with section close Sealing concrete block, the sealing concrete block are embedded in the pouring layer.
Further, the water not drop ply upper end be equipped with seal plate, the seal plate be located at the upper end of the well casing and The upper end of the two sealed set, the seal plate is equipped with the sealing concrete block big compared with section, and the sealing concrete block is embedding It is located in the pouring layer.
Further, depth of the drop ply apart from the bed course is not greater than 0.3m to the water.
Further, the diversion pipe and the well casing are coaxially disposed, and the diameter of the well casing is greater than bore diameter, described The diameter of diversion pipe is less than 1/10 or more of the well casing diameter.
Further, the deep basal pit drilling water burst emits sand seal block apparatus and is located in catch pit, and the catch pit, which is located at, to be gushed Water emits the drill hole of sand.
Compared with prior art, the utility model has the advantage that as follows with good effect.
1, clay layer is arranged in the utility model, plays the role of certain delay to lower section liquid, is lowered into diversion pipe The water in portion, and then realize the reduction of water conservancy diversion inside water pressure, facilitate better release, promote the effect of release, facilitates water not drop ply It is blocked, porous disc is set, first is that guaranteeing that the water of lower section quickly enters in the well casing above bed course, avoid other impurities Discharge, second is that reducing the materials of water not drop ply, general well casing depth is larger, 20m or more or bigger depth, if be not provided with Porous disc, drop ply does not need to project very deep depth water, wastes material, as long as guaranteeing that closure is stringent, selects suitable depth i.e. Can, at low cost, effect is good;
2, the effect of the first sealing steel disc and the second sealing steel disc is identical, is all that the water of lower section is avoided to permeate up, the two Play the role of a variety of protection, promotes protection plugging effect;
3, be integrally provided in catch pit, be equivalent to integrated setting, and not prominent ground setting, do not influence ground other Local construction demand, it is more convenient to use reliable;
4, problem can be solved at 1000 yuan or so for total cost, and economic and practical function is significant, and opposite biliquid is infused Slurry expense is greatly lowered, and can reduce the influence to surrounding enviroment, has substantially no effect on the normal duration of base pit engineering, keeps away Exempt from the influence to unit in charge of construction and construction unit.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:
Fig. 1 is the structural schematic diagram that the utility model deep basal pit drilling water burst emits the not set pouring layer of sand seal block apparatus;
Fig. 2 is the structural schematic diagram that the utility model deep basal pit drilling water burst emits sand seal block apparatus embodiment 2;
Fig. 3 is the portion the A detail drawing of the utility model Fig. 2;
Fig. 4 is the structural schematic diagram that the utility model deep basal pit drilling water burst emits sand seal block apparatus embodiment 1.
Appended drawing reference:
1, bed course;2, well casing;3, diversion pipe;31, switch valve;4, the first sealing steel disc;5, the second sealing steel disc;6, clay Layer;7, porous disc;8, pouring layer;9, seal plate;10, concrete block is sealed;11, water not drop ply;12, concrete layer.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result, Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection;It can be mechanical connection, be also possible to be electrically connected;Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition State the concrete meaning of term in the present invention.
It elaborates with reference to the accompanying drawing to specific embodiment of the utility model.
As shown in Figure 1 to 4, the utility model is that the deep basal pit water burst that drills emits sand seal block apparatus, including bed course 1 and protrudes into To the well casing 2 in foundation pit drilling, bed course 1 is laid on the lower end of base plate of foundation pit, and the upper end of the prominent gasket in the upper end of well casing 2 is arranged, Lower end inside well casing 2 is equipped with clay layer 6, and clay layer 6 is located at the lower section of bed course 1, and the outer ring of well casing 2 is arranged with the first water-stopping steel Piece 4, the first sealing steel disc 4 are located at the upper end of bed course 1 and the two contact setting, and the upper end of clay layer 6 is equipped with porous disc 7, permeable The upper end of plate 7 is equipped with water not drop ply 11, and the top of bed course 1 is equipped with pouring layer 8, clay layer 6 is arranged, plays centainly to lower section liquid Delay effect, the water being lowered into diversion pipe 3 inside, so realization water conservancy diversion inside water pressure reduction, facilitate better release, The effect of release is promoted, facilitating water, drop ply 11 is not blocked, and porous disc 7 is arranged, first is that guaranteeing that the water of lower section quickly enters Into the well casing 2 of the top of bed course 1, other impurities is avoided to be discharged, second is that reducing the materials of water not drop ply 11, general 2 depth of well casing Larger, 20m or more or bigger depth, if being not provided with porous disc 7, drop ply 11 does not need to project very deep depth, wave to water Take material, as long as guaranteeing to block strictly, selects suitable depth, at low cost, effect is good;
The diversion pipe 3 of release is equipped with inside well casing 2, the lower end of diversion pipe 3 is located at 7 lower end of porous disc, diversion pipe 3 Upper end is stretched out the setting of well casing 2 and is connected to external city planting ductwork water route, and diversion pipe 3 is equipped with the switch valve of control water route on-off 31, diversion pipe 3 primarily serves the effect of release, avoids the water of lower section in well casing 2 excessive to the pressure on top surface of top, causes to block The case where object sprays.
Preferably, bed course 1 is concrete structure and thick setting, and intensity is high, and materials are convenient, at low cost, and uses the longevity Life length, chemical property are stablized.
Preferably, the middle part of 2 outer ring of well casing is equipped with the second sealing steel disc 5, the first sealing steel disc 4 and the second sealing steel disc 5 Structure it is identical and horizontally disposed, the second sealing steel disc 5 and the first sealing steel disc 4 and well casing 2 are welded as a whole structure;It is preferred that Ground, the second sealing steel disc 5 are more than or equal to 15cm on the outside of well casing, the effect phase of the first sealing steel disc 4 and the second sealing steel disc 5 It together, is all that the water of lower section is avoided to permeate up, the two plays the role of a variety of protection, promotes protection plugging effect.
Preferably, depth of the drop ply 11 apart from bed course 1 is not greater than 0.3m to water, while the upper end apart from well casing 2 is reserved certain Distance, water is not after drop ply 11 is arranged, observable water leakage situation, if there is water leakage situation it is convenient be arranged in well casing 2 it is secondary The space of closure, convenient and reliable operation.
Preferably, diversion pipe 3 and well casing 2 are coaxially disposed, and water is facilitated quickly to export, and the diameter of well casing 2 is greater than bore diameter, Guarantee that water is all introduced into the inside of well casing 2, the diameter of diversion pipe 3 is less than 1/10 or more of 2 diameter of well casing, avoids the water of outflow Excessive, under the premise of without blocking, the amount of discharge in water one day can reach 100 tons or more, therefore diversion pipe 3 is guaranteeing release In the case where diameter it is the smaller the better, according to below foundation pit water number selected and set, drain excessive in rainy weather pair The use of underwater network management will cause certain influence.
Preferably, deep basal pit drilling water burst emits sand seal block apparatus and is located in catch pit, and catch pit is located at the brill that water burst emits sand It at hole, is integrally provided in catch pit, is equivalent to integrated setting, and not prominent ground setting, do not influence ground elsewhere Construction demand, it is more convenient to use reliable.
Embodiment 1: the upper end of water not drop ply 11 is equipped with concrete layer 12, and the upper end of institute's concrete layer 12 is equipped with seal plate 9, Seal plate 9 is located at the upper end of well casing 2 and the two sealed set, and the upper end of seal plate 9 is equipped with the sealing concrete big compared with section Block 10, sealing concrete block 10 are embedded in pouring layer 8.
Embodiment 2: the upper end of water not drop ply 11 is equipped with seal plate 9, and seal plate 9 is located at the upper end of well casing 2 and the two and seals Setting, the upper end of seal plate 9 are equipped with the sealing concrete block 10 big compared with section, and sealing concrete block 10 is embedded in pouring layer 8 It is interior.
In practical work process, for drilling as 280mm, well casing 2 uses diameter for 273mm, and the diameter of well casing 2 is wanted It is slightly less than the diameter of drilling, guarantees that well casing 2 can be transferred smoothly, emit the drill hole construction catch pit of sand in water burst, specification is 2.0m is deep, planar dimension 1.0*1.0m, and the upper end of well casing 2 is higher by about 1 meter or so of the bottom in hole, is greater than 1 thickness of bed course, foundation pit Casting needs bottom plate to be poured, and bed course 1 plays the role of bottom plate, typically less than 1 meter, in 1 meter or so of thickness, well casing 2 Middle part be equipped with the second sealing steel disc 5, lower end be equipped with the first sealing steel disc 4, and diameter be greater than 15cm setting, prevent the liquid of lower part Body is discharged from the outer ring of well casing 2 and concrete adjacent, plays the role of multiple waterproof, in the top of bed course 1, outside well casing 2 Circle concreting or sticky earthen backfill, form pouring layer 8, while the underground water in drilling is carried out water conservancy diversion with aqueduct, It is regarded as dewatering well and water is drained to city planting ductwork, carry out release using underground water of the diversion pipe 3 to drill hole, solve hole ground swell Water emits sand problem, avoids lower section hydraulic pressure excessive, and the material of closure is jacked and gone out, facilitates after release and is blocked, in well casing 2 Portion, which upwards pressure, to be greatly reduced, it is contemplated that the pressure-bearing property of lower part artesian water, when pouring layer 8 is arranged, water is arranged in application first Drop ply 11 does not carry out first step closure, and sealed depth should be not less than 0.5m apart from hole bottom, not block entire well casing 2 disposably, in advance It stays the surplus blocked again, buffers blocking time, the intensity of the not drop ply 11 of the intensity or water to 2 inner concrete layer 12 of well casing reaches Turn off the switch valve 31 after to requirement, whether have underground water exudation, can will be remaining if plugging effect is good if observing inside and outside well casing 2 Drop ply 11 does not continue to block for the concrete degree of part well casing 2 or water, and well casing 2 is welded with seal plate 9 above, finally by sealing Concrete block 10 is sealed, and diversion pipe 3 is sealed in well casing 2, and total multiple-protection effectively prevent water to flow out, and And after passing through the progress release of diversion pipe 3, the efficiency of closure is greatly improved, can be emitted with the water burst that Solve on site bottom of foundation ditch drills Sand phenomenon avoids high-pressure rotary-spray equipment, saves manpower, and problem can be solved at 1000 yuan or so in total cost, at present Through using in the projects such as east of a river stadium project, Lujiazui square and fragrant home, economic and practical function is significant, relatively double Liquid grout expense is greatly lowered, and can reduce the influence to surrounding enviroment, has substantially no effect on the normal work of base pit engineering Phase avoids the influence to unit in charge of construction and construction unit.
One embodiment of the utility model is described in detail above, but the content is only the utility model Preferred embodiment should not be considered as limiting the scope of the present invention.It is all to be made according to application scope of the utility model All the changes and improvements etc., should still belong within the patent covering scope of the utility model.

Claims (9)

1. deep basal pit drilling water burst emit sand seal block apparatus, it is characterised in that: including bed course and extend into foundation pit drilling in well casing, The setting cushion is in the lower end of base plate of foundation pit, and the upper end of the prominent bed course in the upper end of the well casing is arranged, in the well casing The lower end in portion is equipped with clay layer, and the clay layer is located at the lower section of the bed course, and the outer ring of the well casing is arranged with the first sealing Steel disc, the first sealing steel disc are located at the upper end of the bed course and the two contact setting, the upper end of the clay layer and are equipped with saturating Water plate, the upper end of the porous disc are equipped with water not drop ply, and the top of the bed course is equipped with pouring layer;
The diversion pipe of release is equipped with inside well casing, the lower end of the diversion pipe is located at the porous disc lower end, the water conservancy diversion The upper end of pipe is stretched out the well casing setting and is connected to external city planting ductwork water route, and it is logical that the diversion pipe is equipped with control water route Disconnected switch valve.
2. deep basal pit drilling water burst according to claim 1 emits sand seal block apparatus, it is characterised in that: the bed course is coagulation Soil structure and thick setting.
3. deep basal pit drilling water burst according to claim 1 emits sand seal block apparatus, it is characterised in that: the well casing outer ring Middle part is equipped with the second sealing steel disc, and the structure of the first sealing steel disc and the second sealing steel disc is identical and horizontally disposed, described Second sealing steel disc and the first sealing steel disc and the well casing are welded as a whole structure.
4. deep basal pit drilling water burst according to claim 3 emits sand seal block apparatus, it is characterised in that: second water-stopping steel Piece is more than or equal to 15cm on the outside of well casing.
5. deep basal pit according to claim 1 drilling water burst emits sand seal block apparatus, it is characterised in that: the water not drop ply Upper end is equipped with concrete layer, and the upper end of the concrete layer is equipped with seal plate, the seal plate be located at the upper end of the well casing and The upper end of the two sealed set, the seal plate is equipped with the sealing concrete block big compared with section, and the sealing concrete block is embedding It is located in the pouring layer.
6. deep basal pit according to claim 1 drilling water burst emits sand seal block apparatus, it is characterised in that: the water not drop ply Upper end is equipped with seal plate, and the seal plate is located at the upper end of the well casing and the two sealed set, and the upper end of the seal plate is set There is the sealing concrete block big compared with section, the sealing concrete block is embedded in the pouring layer.
7. deep basal pit according to claim 1 drilling water burst emits sand seal block apparatus, it is characterised in that: the water not drop ply away from Depth from the bed course is greater than 0.3m.
8. deep basal pit drilling water burst according to claim 1 emits sand seal block apparatus, it is characterised in that: the diversion pipe and institute Well casing coaxial arrangement is stated, the diameter of the well casing is greater than bore diameter, and the diameter of the diversion pipe is less than the well casing diameter 1/10 or more.
9. deep basal pit drilling water burst according to claim 1 emits sand seal block apparatus, it is characterised in that: the deep basal pit drilling Water burst emits sand seal block apparatus and is located in catch pit, and the catch pit is located at the drill hole that water burst emits sand.
CN201920586887.5U 2019-04-26 2019-04-26 Deep basal pit drilling water burst emits sand seal block apparatus Active CN209277184U (en)

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CN201920586887.5U CN209277184U (en) 2019-04-26 2019-04-26 Deep basal pit drilling water burst emits sand seal block apparatus

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Application Number Priority Date Filing Date Title
CN201920586887.5U CN209277184U (en) 2019-04-26 2019-04-26 Deep basal pit drilling water burst emits sand seal block apparatus

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112064445A (en) * 2020-08-31 2020-12-11 郑州地铁集团有限公司 Method for blocking track traffic engineering exploration drilling
CN112982364A (en) * 2021-01-26 2021-06-18 中国化学工程第三建设有限公司 Device and method for plugging gushing water from foundation geological exploration hole
CN112982462A (en) * 2021-01-29 2021-06-18 中建五局第三建设有限公司 Construction method for large-aperture pressurized water blocking of concrete member
CN114482106A (en) * 2022-02-10 2022-05-13 山东省地质矿产勘查开发局第一地质大队(山东省第一地质矿产勘查院) Water gushing plugging device for basic geological exploration hole

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112064445A (en) * 2020-08-31 2020-12-11 郑州地铁集团有限公司 Method for blocking track traffic engineering exploration drilling
CN112982364A (en) * 2021-01-26 2021-06-18 中国化学工程第三建设有限公司 Device and method for plugging gushing water from foundation geological exploration hole
CN112982462A (en) * 2021-01-29 2021-06-18 中建五局第三建设有限公司 Construction method for large-aperture pressurized water blocking of concrete member
CN112982462B (en) * 2021-01-29 2022-12-13 中建五局第三建设有限公司 Construction method for large-aperture pressurized water blocking of concrete member
CN114482106A (en) * 2022-02-10 2022-05-13 山东省地质矿产勘查开发局第一地质大队(山东省第一地质矿产勘查院) Water gushing plugging device for basic geological exploration hole
CN114482106B (en) * 2022-02-10 2024-03-08 山东省地质矿产勘查开发局第一地质大队(山东省第一地质矿产勘查院) Basic geology reconnaissance Kong Chongshui plugging device

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Address after: 300191 No. 428 Hongqi South Road, Tianjin, Nankai District

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Address before: 300191 No. 428 Hongqi South Road, Tianjin, Nankai District

Patentee before: Kanjoin in Tianjin City

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