CN201705355U

CN201705355U - Composite well wall of water guide release type vertical well

Info

Publication number: CN201705355U
Application number: CN201020236802XU
Authority: CN
Inventors: 王渭明; 王磊
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2010-06-11
Filing date: 2010-06-11
Publication date: 2011-01-12
Anticipated expiration: 2020-06-11

Abstract

The utility model discloses a composite well wall of a water guide release type vertical well, comprising an internal wall, a waterproof sandwiched layer and an external wall. The composite shaft wall of the water guide release type vertical well is characterized in that a ring of water guide groove is pre-embedded on the height of each water seepage layer of the internal wall; the water guide groove is a ring of closed pipeline, the outer peripheral side of the pipeline is provided with a plurality of water diversion holes; and internal cavities of all water guide grooves are communicated from top down by using water guide pipes, and the bottom ends of the water guide pipes extend out of the bottom of a well hole after communication, thereby guiding seepage water between the internal wall and the external wall out. The composite well wall of the water guide release type vertical well has the effects of reducing the height of water head and reducing water pressure as formation water seeping into a sandwich layer from the external wall firstly enters into the water guide grooves through the water diversion holes and then guides into the well bottom through the water guide pipes, reducing the thickness of the well wall, saving investment and solving the problem of water seepage and leakage appeared after the well wall of a frozen drilled well thaws.

Description

The water guide pressure-releasing type composite well wall of vertical shaft

Technical field

The utility model relates to the mine vertical shaft borehole wall, relates in particular to the shaft wall structure that adopts the freeze-wellboring construction.

Background technology

The vertical borehole wall of existing employing freeze-wellboring construction, the composite shaft lining structure of forming by inwall, anti-water interlayer and outer wall.This structure is used for completely cutting off underground water, bears the formation water soil pressure.The general dark vertical of 500m, outer wall adds the inwall gross thickness can reach 1200mm, and shaft wall structure thickness is big, and the vertical open excavation amount that causes thus is big, and investment is big, and the back waterproof effect and not obvious that thaws of having constructed.Show after deliberation, the pressure that the dark vertical borehole wall bears is most of to be the water pressure on stratum, if can effectively solve the hydraulic pressure that freezes vertical deeply and born, not only can effectively reduce thickness of shaft wall, save investment, freeze the leakage problem that sinking lining thaws and afterwards occurs but also solved.

Summary of the invention

The purpose of this utility model is to provide a kind of can effectively reduce head height between the composite shaft lining inside and outside wall, reduces the water guide pressure-releasing type composite well wall of vertical shaft of hydraulic pressure.

Structure of the present utility model is that it be is characterized in that by the composite shaft lining that inwall, anti-water interlayer and outer wall are formed, and all is embedded with a circle guiding gutter on each permeable layer height of inwall; Guiding gutter is the pipeline of a circle sealing, and the outer circumferential side of pipeline is provided with a plurality of priming holes; The inner chamber of all guiding gutters is communicated with aqueduct from top to bottom, and stretch out from wellbore bottom the bottom that is communicated with the back aqueduct.

Good effect of the present utility model is: the formation water that penetrates into the interlayer from outer wall at first enters guiding gutter by priming hole, imports the shaft bottom by aqueduct again, thereby reduces head height, reduces hydraulic pressure.And then reduce thickness of shaft wall, and save investment, freeze the leakage problem that sinking lining thaws and afterwards occurs but also solved.

The utility model is simple in structure, and easy construction is with low cost and the water guide release is effective.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the schematic diagram of the utility model embodiment;

Fig. 2 is an A portion enlarged drawing;

Fig. 3 is the perspective view of present embodiment guiding gutter and aqueduct.

Marginal data: 1---inwall; 2---outer wall; 3---anti-water interlayer; 4---guiding gutter; 5---aqueduct; 6---priming hole; 7---outfall; 8---interlayer.

The specific embodiment

Referring to Fig. 1, Fig. 2 and Fig. 3, the composite shaft lining that present embodiment is made up of inwall 1, anti-water interlayer 3 and outer wall 2 all is embedded with a circle guiding gutter 4 on each permeable layer height of inwall 1; Guiding gutter 4 is pipelines of a circle sealing, and the outer circumferential side of pipeline is provided with a plurality of priming holes 6; The inner chamber of all guiding gutters 4 is communicated with aqueduct 5 from top to bottom, and stretch out from wellbore bottom the bottom that is communicated with back aqueduct 5.

Freezing sinking shaft shaft construction inwall generally is the continuous jacket wall method construction of synovial membrane method construction from bottom to top or little template, and water guide pressure-releasing type composite shaft lining carries out when above-mentioned inner wall construction simultaneously.

Job practices of the present utility model is as follows:

(1) stay outfall 7 in wellbore bottom when construction inwall 1, and aqueduct 5 is embedded in the inwall 1, expose from the inwall 1 in shaft bottom the bottom of aqueduct 5.

When (2) constructing installation site to guiding gutter 4, guiding gutter 4 is fixed in the inwall 1, and aqueduct 5 is received on guiding gutter 4 interfaces, be communicated with guiding gutter 4 inner chambers.

When (3) guiding gutter 4 being installed for preventing that inwall concreting slurries from entering vallecular cavity from priming hole, overlays on guiding gutter 4 tops with interlayer 8.

(4) repeat above-mentioned (2), (3) step, pre-buried guiding gutter to the inner wall construction of going up of each permeable layer is finished.

The release principle of water guide pressure-releasing type composite shaft lining is, the water between outer wall 2 and the inwall 1 enters in the guiding gutter 4 by priming hole 6, and confluxing through aqueduct 5 is flow in the pit shaft by outfall 7 again.

Claims

1. water guide pressure-releasing type composite well wall of vertical shaft, it be is characterized in that by the composite shaft lining that inwall, anti-water interlayer and outer wall are formed, all is embedded with one and encloses guiding gutter on each permeable layer height of inwall; Guiding gutter is the pipeline of a circle sealing, and the outer circumferential side of pipeline is provided with a plurality of priming holes; The inner chamber of all guiding gutters is communicated with aqueduct from top to bottom, and stretch out from wellbore bottom the bottom that is communicated with the back aqueduct.