CN104294836B

CN104294836B - There is the precipitation processing method in crack in foundation ditch water barrier

Info

Publication number: CN104294836B
Application number: CN201410596176.8A
Authority: CN
Inventors: 何俨; 邓超
Original assignee: China Metallurgical Construction Engineering Group Co Ltd
Current assignee: China Metallurgical Construction Engineering Group Co Ltd
Priority date: 2014-10-30
Filing date: 2014-10-30
Publication date: 2016-06-22
Anticipated expiration: 2034-10-30
Also published as: CN104294836A

Abstract

The invention discloses a kind of foundation ditch water barrier and there is the precipitation processing method in crack, cleaning foundation ditch rock stratum base plate, there is the crack of retention of excessive fluid in investigation, excavates a catch pit outside foundation ditch scope；PVC collector pipe is installed along base plate gap, how with PVC collector pipe, whole gaps to be connected with catch pit；Along PVC collector pipe top covered metal plate, build blinding layer on a metal plate, by PVC collector pipe and metallic plate, cover below blinding layer, sandstone surface is formed closely knit blinding layer。The precipitation processing method that the present invention obtains, precipitation method structure is succinct, flexible and changeable, save cost, be prone to ensure that catch pit base plate not hydrops, dewatering effect are obvious；Even if sandstone exists crack, also can quickly process, and ensure the effect of catchmenting of foundation ditch, it is ensured that being smoothed out of engineering construction, promote construction speed；There is good economic worth and social value。

Description

There is the precipitation processing method in crack in foundation ditch water barrier

Technical field

The present invention relates to precipitation processing technology field in a kind of engineering construction, particularly there is the precipitation processing method in crack in a kind of foundation ditch water barrier。

Background technology

In the engineering constructions such as building construction and municipal works, it is necessary to adopt the mode of base pit dewatering, reducing water level, the effect of base pit dewatering mainly has: 1, convenient construction；2, conveniently beat bed course, do waterproof；3, prevent foundation ditch from decaying。When place subsoil water belongs to terrace type diving, water-bearing layer is arranged at top, and during by sandstone as water proof floor, precipitation generally adopts pipe well points precipitation, and arranges along foundation ditch circumferential annular, and pipe well is diving complete penetration of well。But when sandstone exists crack in the middle of place, having subsoil water and gush out from crack, losing efficacy thus shining into base pit dewatering。As it is shown in figure 1, when the sandstone bottom foundation ditch exists crack, connect with underground water source and leak, or this crack of the water of the soil layer of foundation pit side-wall, lithosphere gushes out, all can affect base pit dewatering, cause base pit dewatering to lose efficacy, it is necessary to crack is processed。

Summary of the invention

There is the precipitation processing method in crack in a kind of simple in construction that the invention aims to solve the problems referred to above and provide, the water barrier that subsoil water can be drawn foundation ditch easily and fast。

To achieve these goals, there is the precipitation processing method in crack in a kind of foundation ditch water barrier, it is characterised in that includes processing as follows step:

1) cleaning foundation ditch rock stratum base plate, there is the crack of retention of excessive fluid in investigation, excavates a catch pit outside foundation ditch scope, and the size of this catch pit is determined according to technological requirement, meets technological requirement；

2) PVC collector pipe is installed along base plate gap, according to the quantity in gap and trend, with one or above PVC collector pipe, whole gaps is connected with catch pit, whole PVC collector pipes are passed into catch pit；

3) along PVC collector pipe top covered metal plate, it is prevented that foreign material enter PVC collector pipe and cause line clogging；

4) according to production engineering specifications, build blinding layer on a metal plate, by PVC collector pipe and metallic plate, cover below blinding layer, sandstone surface is formed closely knit blinding layer；This blinding layer is by crack, PVC collector pipe and metallic plate, in covering。

Further feature is, in step 2) in, first gap being expanded, form V-type hole, PVC collector pipe is arranged in V-type hole, partly or entirely sinks in V-type hole。

In step 3), metallic plate is inverted V-shaped metallic plate, is buckled in PVC collector pipe top。

Described PVC collector pipe, has filtering function, and PVC collector pipe circumferentially offers several holes vertically。

Compared with prior art, there is the precipitation processing method in crack and have the advantage that in the water barrier that the present invention obtains

1, the precipitation method structure of the present invention is succinct, flexible and changeable, save cost, be prone to ensure that catch pit base plate not hydrops, dewatering effect are obvious；

Even if 2 sandstone exist crack, also can quickly process, and ensure the effect of catchmenting of foundation ditch, it is ensured that being smoothed out of engineering construction, promote construction speed；

3, the precipitation method of the present invention, has good popularization and application space, has good economic worth and social value。

Accompanying drawing explanation

Fig. 1 is the precipitation foundation ditch profile of prior art；

Fig. 2 is the facade top view that water barrier of the present invention exists the precipitation processing method in crack；

Fig. 3 is along A A to sectional view in Fig. 2；

Fig. 4 is PVC collector pipe structural representation。

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention is further described。

There is the precipitation processing method in crack in the water barrier that the embodiment of the present invention provides, as shown in Figure 2, Figure 3, Figure 4, it includes processing as follows step:

One, cleaning foundation ditch rock stratum base plate, there is the crack of retention of excessive fluid in investigation, excavates a catch pit, size (length of rectangular configuration, width and the degree of depth of this catch pit outside foundation ditch scope, the radius of circular configuration, the degree of depth etc.) determine according to technological requirement, meet technological requirement；The present invention provides the catch pit of a kind of rectangle (square) structure, and its length, width and height are 0.5m*0.5m*0.5m catch pit respectively。

Two, PVC collector pipe is installed along sandstone gap, some PVC collector pipes are passed into catch pit, namely according to the quantity in sandstone gap and trend, with one or above PVC collector pipe, whole sandstone gaps are connected with catch pit, whole PVC collector pipes are collected in the outer catch pit of foundation ditch。If desired, being expanded in gap, form V-type hole, when PVC collector pipe is installed, part sinks to V-type hole；It is easy to, when installing PVC collector pipe, partly or entirely be sunk in gap by PVC collector pipe, there is location and reduce the effect of height, while fixing PVC collector pipe, also reduce height；PVC collector pipe can set up filtering function, arranges filter course etc., forms PVC filter-type collector pipe；PVC collector pipe circumferentially offers several holes vertically, it is simple to the hole that the water flowed out from sandstone gap can pass through to offer on circumference flows in PVC collector pipe, and is transported in catch pit。

Three, along PVC collector pipe top covered metal plate, it is prevented that foreign material enter PVC collector pipe and cause line clogging。Metallic plate preferably selects arc (arch), the inverted V-shaped metallic plate in figure, is buckled in PVC collector pipe top。This V-arrangement metallic plate covers on PVC collector pipe, bears pressure, and PVC collector pipe is had protective effect, it is prevented that its stress deformation。

Four, according to production engineering specifications, build blinding layer on a metal plate, by PVC collector pipe and metallic plate, cover below blinding layer, sandstone surface is formed closely knit blinding layer；This blinding layer is by crack, PVC collector pipe and metallic plate, in covering；This blinding layer is a kind of concrete layer, as the water barrier on sandstone, by water segregation (closure) below blinding layer；Intensity meets technological requirement。In the use in later stage, it is necessary in time hydrops in catch pit is carried out pump drainage, as drawn water with immersible pump, it is ensured that base surface is without hydrops。

The variation of the inventive method pvc pipe arrangement, can select during construction as the case may be, namely determines according to concrete conditions such as the shape in crack, the character leaked。Such as when rock stratum base plate is point-like retention of excessive fluid, and only one of which leakage point, non-filtered type pvc pipe can be directly accessed at this issue and direct water into foundation ditch, namely need not circumferentially offer porose PVC pipeline。

Finally it should be noted that, above example is only in order to illustrate technical scheme but not restriction technologies scheme, although the present invention has been described in detail by applicant with reference to preferred embodiment, it will be understood by those within the art that, technical scheme is modified or equivalent replacement by those, without deviating from objective and the scope of the technical program, all should be encompassed in the middle of scope of the presently claimed invention。

Claims

1. there is the precipitation processing method in crack in a foundation ditch water barrier, it is characterised in that includes processing as follows step:

During installation, first being expanded in gap, form V-type hole, PVC-type collector pipe is arranged in V-type hole, partly or entirely sinks in V-type hole；

Described PVC collector pipe, has filtering function, and PVC collector pipe circumferentially offers several holes vertically；

3) along PVC collector pipe top covered metal plate, it is prevented that foreign material enter PVC collector pipe and cause line clogging；Metallic plate is arc, is buckled in PVC collector pipe top；