CN104947701A

CN104947701A - Ground pit rainfall combination deep well device

Info

Publication number: CN104947701A
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: 2015-09-30
Anticipated expiration: 2035-07-07
Also published as: CN104947701B

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 foundation pit dewatering

Technical field

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

Background technology

Deep pit digging is the important construction sequence of modern heavy construction underground structure, in foundation ditch, dewatering is also known as groundwater control, namely in Foundation Pit Construction, the requirement of space enclosing structure and excavation and construction is met with dewatering, the groundwater table of construction environment is higher, the degree of depth of foundation requirement is darker, and its difficulty of construction is larger.For preventing the change of following peripheral, ground, harm is brought to the environment around foundation ditch and facility, therefore generally adopt drainage well to implement deep well points dewatering and solve this type of technical problem, because the area of the magnitude setting foundation foundation ditch of drainage well distributes, so be equipped with drainage well in each some position of foundation ditch, Problems existing is, one is that the complex manufacturing technology of drainage well, cost of manufacture are high; Two is because drainage well is distributed in each position of foundation ditch, hinders the normal operation of other construction machinery in foundation ditch, adds the work difficulty of construction machinery, reduces efficiency of construction; Three is that drainage well is easily damaged by the construction machinery in foundation ditch, needs again to repair or complement well, not only cause the waste of manpower financial capacity, but also have impact on the construction period after damage.

Summary of the invention

The combination deep-well device of a kind of foundation pit dewatering provided for the deficiencies in the prior art is provided, the present invention forms combination well by a bite drainage well and many mouthfuls of perpendicular sand drains, and adopt horizontal sand drain to be communicated with the bottom of drainage well respectively by many mouthfuls of perpendicular sand drains, the precipitation area of every mouthful of drainage well is effectively expanded, reduce the quantity that drainage well is set in foundation ditch, be beneficial to the Effec-tive Function of construction machinery in foundation ditch, there is drainage well and make easy, precipitation cost is low, the advantage that dewatering effect is good.

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

A kind of combination deep-well device of foundation pit dewatering, it is characterized in that it comprises drainage well, perpendicular sand drain and horizontal sand drain, described drainage well is vacuum well, perpendicular sand drain and horizontal sand drain are the well being full of gravel, drainage well is vertical in foundation ditch, and perpendicular sand drain is many mouthfuls, and perpendicular sand drain well head is closed and is centered around drainage well periphery successively and vertically arranges, horizontal sand drain level is located at bottom foundation ditch, and is communicated with drainage well respectively by many mouthfuls of perpendicular sand drains; Described many mouthfuls perpendicular sand drains with drainage well for the main shaft peripherally arrangement in petal-shaped, or many mouthfuls of perpendicular sand drains with drainage well for main shaft is rectangular arrangement; Described drainage well be well head close, in establish vaccum conduit and the port of vaccum conduit connect vacuum pump.

The present invention forms combination well by a bite drainage well and many mouthfuls of perpendicular sand drains, and adopt horizontal sand drain to be communicated with the bottom of drainage well respectively by many mouthfuls of perpendicular sand drains, the precipitation area of every mouthful of drainage well is effectively expanded, reduce the quantity that drainage well is set in foundation ditch, be beneficial to the Effec-tive Function of construction machinery in foundation ditch, having combination well makes easily, and precipitation cost reduces, the advantage that dewatering effect is good.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

The structural representation that Fig. 2 is drainage well, perpendicular sand drain is rectangular arrangement;

The using state schematic diagram of Fig. 3 to be foundation pit dewatering well point be rectangular layout;

The structural representation that Fig. 4 is drainage well, perpendicular sand drain is petal-shaped arrangement;

Fig. 5 is Soft Ground well point is the using state schematic diagram that petal-shaped is arranged.

Detailed description of the invention

Consult Fig. 1, Fig. 2, Fig. 4, the present invention includes drainage well 1, perpendicular sand drain 2 and horizontal sand drain 3, described drainage well 1 is vacuum well, perpendicular sand drain 2 and horizontal sand drain 3 are for being full of the well of gravel, drainage well 1 is vertical in foundation ditch, and perpendicular sand drain 2 is many mouthfuls, and perpendicular sand drain 2 well head is closed and is centered around drainage well 1 periphery successively and vertically arranges, horizontal sand drain 3 level is located at bottom foundation ditch, and is communicated with drainage well 1 respectively by many mouthfuls of perpendicular sand drains 2; Described many mouthfuls perpendicular sand drains 2 are the main shaft peripherally arrangement in petal-shaped with drainage well 1, or many mouthfuls of perpendicular sand drains 2 with drainage well 1 for main shaft is rectangular arrangement; Described drainage well 1 for well head close, in establish vaccum conduit 12 and the port of vaccum conduit 12 connect vacuum pump 11.

Embodiment

The making of dewatering well:

Consult Fig. 1, Fig. 2, Fig. 4, first verify bottom foundation ditch and whether there is powder soil horizon or layer of sand, for the ground bottom foundation ditch with powder soil horizon or layer of sand, the making of horizontal sand drain 3 can be omitted, only by designing requirement layout drainage well 1 and perpendicular sand drain 2 in foundation ditch, the bottom of drainage well 1 and perpendicular sand drain 2 and powder soil horizon or layer of sand need be made through and perpendicular sand drain 2 well head closed; Well casing, vaccum conduit 12 connect vacuum pump 11 and closed by well head are set in drainage well 1, implement foundation pit dewatering operation;

For the ground not having powder soil horizon or layer of sand bottom foundation ditch, by designing requirement layout drainage well 1, perpendicular sand drain 2 and horizontal sand drain 3 in foundation ditch, first a bite well in operation is got out, bottom well in operation, make horizontal sand drain 3 with horizontal earthboring machine, get out perpendicular sand drain 2 and in perpendicular sand drain 2 and horizontal sand drain 3, be full of gravel and well head is closed; Utilize well in operation to substitute drainage well 1, and well casing, vaccum conduit 12 are set in drainage well 1, connect vacuum pump 11 and well head is closed, implement foundation pit dewatering operation;

The distribution of drainage well and perpendicular sand drain:

The present invention both can be used for foundation pit dewatering, also can be used for Soft Ground.

Distribution for foundation pit dewatering drainage well and perpendicular sand drain:

Consult Fig. 1, Fig. 2, Fig. 3, during for foundation pit dewatering, drainage well 1 be arranged at foundation ditch periphery, many mouthfuls of perpendicular sand drains 2 with drainage well 1 for main shaft is rectangular arrangement; The advantage of this distribution mode is that the central region of foundation ditch does not arrange drainage well 1, is convenient to the normal operation of other construction machinery in foundation ditch, for mechanical execution is provided convenience, improve efficiency of construction;

Distribution for Soft Ground drainage well and perpendicular sand drain:

Consult Fig. 1, Fig. 4, Fig. 5, during for Soft Ground, by uniform for drainage well 12 ground be distributed in for process, many mouthfuls of perpendicular sand drains 2 are the main shaft peripherally arrangement in petal-shaped with drainage well 1; The advantage of this distribution mode is that static(al) discharging consolidation soft soil foundation is convenient to realize, and makes the precipitation for each position of Ground Treatment balanced, and foundation settlement evenly and good stability.

Claims

1. the combination deep-well device of a foundation pit dewatering, it is characterized in that it comprises drainage well (1), perpendicular sand drain (2) and horizontal sand drain (3), described drainage well (1) is vacuum well, perpendicular sand drain (2) and horizontal sand drain (3) are for being full of the well of gravel, drainage well (1) is vertical in foundation ditch, perpendicular sand drain (2) is many mouthfuls, perpendicular sand drain (2) well head is closed and is centered around drainage well (1) periphery successively and vertically arranges, horizontal sand drain (3) level is located at bottom foundation ditch, and many mouthfuls of perpendicular sand drains (2) is communicated with drainage well (1) respectively.

2. the combination deep-well device of a kind of foundation pit dewatering according to claim 1, it is characterized in that many mouthfuls of perpendicular sand drains (2) with drainage well (1) for the main shaft peripherally arrangement in petal-shaped, or many mouthfuls of perpendicular sand drains (2) with drainage well (1) for main shaft is rectangular arrangement.

3. the combination deep-well device of a kind of foundation pit dewatering according to claim 1, it is characterized in that drainage well (1) for well head close, in establish vaccum conduit (12) and the port of vaccum conduit (12) connect vacuum pump (11).