CN104947701B

CN104947701B - Ground pit rainfall combination deep well device

Info

Publication number: CN104947701B
Application number: CN201510392542.2A
Authority: CN
Inventors: 冯克俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-07
Filing date: 2015-07-07
Publication date: 2017-04-26
Anticipated expiration: 2035-07-07
Also published as: CN104947701A

Abstract

The invention discloses a ground pit rainfall combination deep well device comprising an unwatering well, vertical sand wells and a transverse sand well; the unwatering well is a vacuum well; the vertical sand well and the transverse sand well are filled with gravels; the unwatering well is vertically arranged in the ground pit; more than one vertical sand wells surround the unwatering well in sequence and vertically arranged, and wellheads of the vertical sand wells are sealed; the transverse sand well is horizontally arranged on the bottom of the ground pit, and respectively connects the vertical wells with the unwatering well. The unwatering well and the plurality of vertical wells are combined, and the transverse sand well respectively connects the vertical wells with the unwatering well, thus effectively enlarging rainfall area of each unwatering well, reducing unwatering well number in the ground pit, so construction machines in the ground pit can effectively work; the combination well is easy to construct, can lower rainfall cost, and is good in rainfall effect.

Description

A kind of combination deep-well device of base pit dewatering

Technical field

The present invention relates to the combination deep-well device of civil engineering base pit dewatering technical field, especially a kind of base pit dewatering.

Background technology

Deep pit digging is the important operational procedure of modern heavy construction underground structure, and in foundation ditch, lowering of watertable is also Claim Groundwater Control, i.e., with lowering of watertable meeting the requirement of building enclosure and excavation and construction in Foundation Pit Construction, The level of ground water of construction environment is higher, and the depth of foundation requirement is deeper, and its difficulty of construction is bigger.To prevent the change of ground following peripheral Harm is brought to the environment and facility around foundation ditch, therefore deep well points lowering of watertable is implemented using drainage well typically and solved Such technical problem, due to the setting quantity of drainage well be according to foundation ditch area and be distributed, so in each point of foundation ditch Position is equipped with drainage well, and the problem for existing is that one is the complex manufacturing technology of drainage well, cost of manufacture height；Two is due to drainage Well is distributed in each position of foundation ditch, hinders the normal operation of other construction machineries foundation ditch Nei, increased the work of construction machinery Make difficulty, reduce efficiency of construction；Three is that drainage well is easily damaged by the construction machinery in foundation ditch, need to repair after damage again or Complement well, not only causes the waste of manpower financial capacity, and also affects the construction period.

The content of the invention

The purpose of the present invention is for the deficiencies in the prior art and the combination deep-well device of a kind of base pit dewatering that provides, this Invention is made up of combination well a bite drainage well and many mouthfuls of perpendicular sand drains, and using horizontal sand drain by many mouthfuls of perpendicular sand drains respectively with drainage well Bottom connects so that the precipitation area of every mouthful of drainage well effectively expands, and reduces the quantity that drainage well is arranged in foundation ditch, beneficial to base In hole, the Effec-tive Function of construction machinery, makes simplicity, precipitation low cost, the good advantage of dewatering effect with drainage well.

The concrete technical scheme for realizing the object of the invention is：

The combination deep-well device of a kind of base pit dewatering, it is characterised in that it includes drainage well, perpendicular sand drain and horizontal sand drain, described Drainage well is vacuum well, and perpendicular sand drain and horizontal sand drain are the well full of gravel, and drainage well is vertical in foundation ditch, and it is many to erect sand drain Mouthful, perpendicular sand drain well head is closed and is centered around drainage well periphery successively and is vertically arranged, and horizontal sand drain level is located at bottom of foundation ditch, and will be many The perpendicular sand drain of mouth is connected with drainage well respectively；Many mouthfuls of described perpendicular sand drains are peripherally arranged in petal-shaped by main shaft of drainage well, or Many mouthfuls of perpendicular sand drains are in rectangular arrangement by main shaft of drainage well；Described drainage well is well head closing, the interior vaccum conduit and true of setting The port connection vacuum pump of empty water pipe.

The present invention is made up of combination well a bite drainage well and many mouthfuls of perpendicular sand drains, and is distinguished many mouthfuls of perpendicular sand drains using horizontal sand drain Connect with the bottom of drainage well so that the precipitation area of every mouthful of drainage well effectively expands, reduce and drainage well is set in foundation ditch Quantity, beneficial to the Effec-tive Function of construction machinery in foundation ditch, makes easily with combination well, and precipitation cost is reduced, and dewatering effect is good Advantage.

Description of the drawings

Fig. 1 is the structural representation of the present invention；

Fig. 2 is drainage well, perpendicular structural representation of the sand drain in rectangular arrangement；

Fig. 3 is use state schematic diagram of the base pit dewatering well point in rectangular arrangement；

Fig. 4 is drainage well, perpendicular structural representation of the sand drain in petal-shaped arrangement；

Fig. 5 is use state schematic diagram of the Soft Ground well point in petal-shaped arrangement.

Specific embodiment

Refering to Fig. 1, Fig. 2, Fig. 4, the present invention includes drainage well 1, perpendicular sand drain 2 and horizontal sand drain 3, and the drainage well 1 is vacuum Well, perpendicular sand drain 2 and horizontal sand drain 3 are the well full of gravel, and drainage well 1 is vertical in foundation ditch, and it is many mouthfuls to erect sand drain 2, erects sand drain 2 Well head is closed and is centered around 1 periphery of drainage well successively and is vertically arranged, and 3 level of horizontal sand drain is located at bottom of foundation ditch, and by many mouthfuls of perpendicular sand Well 2 is connected with drainage well 1 respectively；Many mouthfuls of described perpendicular sand drains 2 are peripherally arranged in petal-shaped by main shaft of drainage well 1, or many Mouthful perpendicular sand drain 2 is main shaft in rectangular arrangement with drainage well 1；Described drainage well 1 be well head closing, it is interior set vaccum conduit 12 and The port connection vacuum pump 11 of vaccum conduit 12.

Embodiment

The making of dewatering well：

Refering to Fig. 1, Fig. 2, Fig. 4, verify whether bottom of foundation ditch has powder soil horizon or layer of sand first, for bottom of foundation ditch has The ground of powder soil horizon or layer of sand, can omit the making of horizontal sand drain 3, only need to by design requirement in the foundation ditch layout drainage well 1 and perpendicular Sand drain 2, makes the bottom of drainage well 1 and perpendicular sand drain 2 close with powder soil horizon or layer of sand insertion and by 2 well head of perpendicular sand drain；In drainage well 1 Interior setting well casing, vaccum conduit 12 simultaneously connect vacuum pump 11 and close well head, implement base pit dewatering operation；

For bottom of foundation ditch does not have the ground of powder soil horizon or layer of sand, by design requirement in the foundation ditch layout drainage well 1, perpendicular sand Well 2 and horizontal sand drain 3, get out a bite operation well first, make horizontal sand drain 3 with horizontal earthboring machine in operation bottom, get out perpendicular sand Well 2 simultaneously in perpendicular sand drain 2 and horizontal sand drain 3 is full of gravel and closes well head；Drainage well 1 is substituted using operation well, and in drainage Well casing, vaccum conduit 12 are set in well 1, are connected vacuum pump 11 and well head is closed, implement base pit dewatering operation；

The distribution of drainage well and perpendicular sand drain：

The present invention can be not only used for base pit dewatering, it can also be used to Soft Ground.

For the distribution of base pit dewatering drainage well and perpendicular sand drain：

Refering to Fig. 1, Fig. 2, Fig. 3, during for base pit dewatering, drainage well 1 is arranged at into foundation ditch periphery, many mouthfuls of perpendicular sand drains 2 with It is in rectangular arrangement that drainage well 1 is main shaft；The advantage of the distribution mode is that the central region of foundation ditch is not provided with drainage well 1, is easy to In foundation ditch, the normal operation of other construction machineries, is that mechanical execution is provided convenience, improves efficiency of construction；

For the distribution of Soft Ground drainage well and perpendicular sand drain：

Refering to Fig. 1, Fig. 4, Fig. 5, during for Soft Ground, drainage well 12 is uniformly distributed in the ground to be processed On, many mouthfuls of perpendicular sand drains 2 are peripherally arranged in petal-shaped by main shaft of drainage well 1；The advantage of the distribution mode is that static(al) draining is solid Knot soft soil foundation is facilitated implementation so that the precipitation for being intended to each position of Ground Treatment is balanced, and settlement of foundation is uniform and good stability.

Claims

1. the combination deep-well device of a kind of base pit dewatering, it is characterised in that it includes drainage well（1）, perpendicular sand drain（2）And horizontal sand drain （3）, the drainage well（1）For vacuum well, sand drain is erected（2）And horizontal sand drain（3）It is the well full of gravel, drainage well（1）Vertically set In foundation ditch, sand drain is erected（2）For many mouthfuls, sand drain is erected（2）Well head is closed and is centered around drainage well successively（1）Periphery is vertically arranged, Horizontal sand drain（3）Level is located at bottom of foundation ditch, and by many mouthfuls of perpendicular sand drains（2）Respectively with drainage well（1）Connection；Wherein：

The drainage well（1）, perpendicular sand drain（2）And horizontal sand drain（3）Making：A bite operation well is got out first, in operation bottom Get out horizontal sand drain（3）, perpendicular sand drain（2）And in perpendicular sand drain（2）And horizontal sand drain（3）It is interior to close full of gravel and by well head；Using work Industry well substitutes drainage well（1）；

The drainage well（1）For well head closing, interior set vaccum conduit（12）And vaccum conduit（12）Port connection vacuum pump （11).

2. a kind of combination deep-well device of base pit dewatering according to claim 1, it is characterised in that many mouthfuls of perpendicular sand drains（2）With Drainage well（1）Peripherally arrange in petal-shaped for main shaft, or many mouthfuls of perpendicular sand drains（2）With drainage well（1）It is in rectangular row for main shaft Row.