Vacuum tube well precipitation system under special geologic condition
Technical field
The invention belongs to civil engineering technical field, be specifically related to the vacuum tube well precipitation system under a kind of special geologic condition.
Background technology
When building operations is carried out in some location, due to the reason that ground soil property is loose or underground water is more, even if consolidation is solid again, also can not ensure that foundation strength reaches appointment requirement, this this all had a strong impact on the progress of During Initial Stage Construction engineering, and the safety and reliability of construction to be had a serious impact, therefore geology strengthening is carried out to some geology, solving the problem of ground water drainage, is the very stubborn problem nowadays existed in many fields.
Summary of the invention
Order of the present invention has the vacuum tube well precipitation system be to provide under a kind of special geologic condition.This system can solve the impact of the Groundwater base under ground effectively, makes ground soil property closely knit, increases the intensity of ground.
The technical solution used in the present invention: the vacuum tube well precipitation system under special geologic condition, it comprises header tank, centrifugal pump, vacuum pump, water header and dig the surface level of certain depth and smooth foundation ditch on ground, drill through the pipe well of the matrix-like of the certain arranging rule of spacing along route trend under foundation ditch soil property, a well-point pipe is fitted with in each pipe well, outer wall along well-point pipe is laid with suction hole, the filter material layer that water permeability is strong is filled with outside well-point pipe in pipe well, fill out above filter material layer in pipe well and be provided with certain thickness argillic horizon, be embedded with in argillic horizon be interconnected intersect by transverse pipe and longitudinal pipe the latticed water header formed, it is the position of pipe well below the latticed intersection of water header, and each transverse pipe is all communicated with the well-point pipe in pipe well with the termination of longitudinal pipe, one deck layer of concrete is equipped with at foundation ditch upper surface, the mouth of pipe of well-point pipe is exposed at outside layer of concrete, water header is communicated with header tank with vacuum pump respectively by centrifugal pump.
Further, the diameter of described well-point pipe is 800 millimeters, and the distance bottom the distance pipe well of well-point pipe bottom is 500 millimeters.
Further, described well-point pipe is provided with the suction hole of the certain queueing discipline of spacing on along its length.
The present invention compared with prior art its beneficial effect is: the present invention by laying drainage pipeline networks under ground, after drainage pipeline networks is communicated with negative well, utilize pump groundwater mining to be fallen, ensure that tightness degree and the intensity of ground soil property, the safety for subsequent construction provides reliable guarantee.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the longitudinal sectional drawing of pipe well part of the present invention.
Detailed description of the invention
As shown in Figure 1, vacuum tube well 7 precipitation system under special geologic condition, it comprises header tank 1, centrifugal pump 2, vacuum pump 3, water header 4 and dig the surface level of certain depth and smooth foundation ditch 6 on ground 5, drill through the pipe well 7 of the matrix-like of the certain arranging rule of spacing along route trend under foundation ditch 6 soil property, as Fig. 2, a well-point pipe 8 is fitted with in each pipe well 7, outer wall along well-point pipe 8 is laid with suction hole 9, the strong filter material layer of water permeability 10 is filled with outside well-point pipe 8 in pipe well 7, filter material layer 10 can adopt coarse sand or rubble, fill out above filter material layer 10 in pipe well 7 and be provided with certain thickness argillic horizon 11, can prevent pipe well from leaking gas like this, be embedded with in argillic horizon 11 be interconnected intersect by transverse pipe and longitudinal pipe the latticed water header 4 formed, it is the position of pipe well 7 below the latticed intersection of water header 4, and each transverse pipe is all communicated with the well-point pipe 8 in pipe well 7 with the termination of longitudinal pipe, one deck layer of concrete 12 is equipped with at foundation ditch 6 upper surface, the mouth of pipe of well-point pipe 8 is exposed at outside layer of concrete 12, water header 4 is communicated with header tank 1 with vacuum pump 3 respectively by centrifugal pump 2.The diameter of described well-point pipe 8 is 800 millimeters, and the distance bottom the distance pipe well 7 of well-point pipe 8 bottom is 500 millimeters.Described well-point pipe 8 is provided with the suction hole 9 of the certain queueing discipline of spacing on along its length.
After adopting structure of the present invention, along with the extraction of water, groundwater table reduces gradually, and the soil body is compacted, like this, has both prevented the generation of quicksand phenomenon, reaches again the object increasing foundation strength.