DTH drill pipe explains what is the role of falling wells?

Classification:

Industry dynamics

Release time:

2020-07-13

【Summary Description】 Before drilling a well, it is necessary to make full preparations. Selecting the location of the well can avoid many troubles. Therefore, drilling a well is one of the tasks with technical content, and it is also a large project. The completion of this project requires a lot of Financial resources and manpower

Before drilling a well, it is necessary to make full preparations. Selecting a good location for drilling a well can avoid many troubles. Therefore, drilling a well is one of the tasks with technical content, and it is also a large project. The completion of this project requires a lot of financial resources and manpower,DTH Drill Pipeto introduce to you the role of falling wells?
1. To prevent groundwater seepage due to sand flow, piping and other seepage damage.
2. Eliminate or reduce the hydrostatic pressure and permeability acting on the slope or pit wall enclosure structure, and improve the stability of the slope or pit wall enclosure structure.
3. Avoid underwater operations, so that the foundation pit construction can be carried out above the water level, to provide convenience for construction, but also help to improve the quality of construction.


潜孔钻杆
DTH Drill PipeIntroduction of precipitation methods:
1. Large well point dewatering method: mainly in the dewatering area, drill large boreholes, install filter pipes and deep well pumps, and pump groundwater up. Large-scale well point dewatering covers a large area due to its large well pipe diameter and a deep well pump installed in each well hole.
2. Gully precipitation method: Gully precipitation is the simplest, more economical and faster precipitation method. That is, an open trench is dug on both sides of the trench, the elevation of the bottom of the open trench is lower than that of the trench, and a water collecting well is set.
Scope of application:
(1) Sand and gravel or silt soil layer with high underground water level. For the cohesive soil layer with weak water permeability, the underground water level can be lowered by electroosmosis well point, deep well well point or combination of descending and discharging.
(2) take effective measures,DTH Drill PipeIt is sufficient to control the settlement of adjacent land within the allowable value.
(3) the surrounding environment allows the ground to have a certain settlement.
(4) It has regional mature experience, which proves that precipitation does not have a great impact on the surrounding environment.
(5) The water stop curtain is closed, and the water level outside the pit does not drop much during precipitation in the pit.








Key words:

weilida drill