Direct push type underground water sampling drilling tool
By designing a direct-push groundwater sampling drill bit, and using quartz sand and bentonite for filtration and water sealing, the problems of soil and water pollution and well wall collapse were solved, achieving efficient and accurate groundwater monitoring and avoiding groundwater environmental pollution and flow field disturbance.
Patent Information
- Application Number
- CN202520489956.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In existing technologies, upper soil and moisture enter the sampling layer along the drill pipe, polluting the groundwater environment, causing inaccurate monitoring data, and resulting in easy well wall collapse and disturbance of the groundwater flow field.
The direct-push groundwater sampling drill tool includes a hollow drill rod, a drill bit holder, a disposable drill bit, a well casing, and a water intake pipe. The space between the well casing and the hollow drill rod is filled with filter material and water-stopping material. The filter material is made of quartz sand, and the water-stopping material is made of bentonite. The well casing consists of a sedimentation pipe, a slotted screen pipe, and a white pipe. The drill bit holder is fixedly connected to the well casing, and the disposable drill bit is connected by a snap-fit.
It effectively prevents upper soil and water from entering the sampling layer, improves the accuracy of test results, prevents well wall collapse, ensures that the groundwater environment is not polluted, provides accurate monitoring data, does not disturb the groundwater flow field, and is simple and efficient to operate.
Smart Images
Figure CN223661818U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the underground water environment monitoring technical field, concretely relates to a straight push type underground water sampling drill. BACKGROUND
[0002] At present, the quality of soil and underground water in China is not optimistic, with the increasing attention of the state to the quality of soil and underground water environment, domestic provinces and cities have vigorously promoted the investigation of the status of soil and underground water, wherein the underground water environment monitoring well is a water quality monitoring well set up for accurately grasping the quality of underground water environment and the dynamic distribution change of pollutants in underground water body, with the enhancement of environmental protection consciousness and the improvement of scientific and technological level, the drilling and well building technology of underground water environment monitoring well is also developing, at present, the hollow spiral well building method is more applied in engineering, but in the process of drilling, the upper soil particles and water will enter the sampling layer along the drill rod, pollute the underground water environment, and the monitoring data is inaccurate, meanwhile, in the process of monitoring well building, the well wall is prone to local or even overall collapse, which disturbs the underground water flow field, in order to solve the above problems, it is urgent to develop a straight push type underground water sampling drill which is efficient, accurate in monitoring data and does not disturb the underground water flow field. SUMMARY
[0003] The utility model discloses a kind of straight push type underground water sampling drills, which are efficient, not prone to collapse, do not interfere with monitoring data and do not disturb the underground water flow field, to overcome the defects in the prior art that upper soil and water will enter sampling layer along drill rod, pollute underground water environment, monitoring data is inaccurate, well wall is prone to collapse and disturbs the underground water flow field.
[0004] The utility model discloses a kind of straight push type underground water sampling drills, which are efficient, not prone to collapse, do not interfere with monitoring data and do not disturb the underground water flow field, to overcome the defects in the prior art that upper soil and water will enter sampling layer along drill rod, pollute underground water environment, monitoring data is inaccurate, well wall is prone to collapse and disturbs the underground water flow field.
[0005] A straight push type underground water sampling drill, characterized in that it comprises a hollow drill rod, a drill bit holder detachably installed at the lower end of the hollow drill rod, a disposable drill bit fixed at the lower end of the drill bit holder, a well pipe sleeved inside the hollow drill rod, and a water intake pipe extending into the well pipe.
[0006] Further, the well pipe and the hollow drill rod are sequentially filled with water filtering material and water stopping material from bottom to top.
[0007] Further, the well pipe is sequentially a sedimentation pipe, a slotted screen pipe and a white pipe from bottom to top; the drill bit holder is fixedly connected at the sedimentation pipe; the slotted screen pipe and the hollow drill rod are filled with water filtering material.
[0008] Further, the water filtering material is quartz sand, and the quartz sand is wrapped with a layer of steel wire mesh outside; the steel wire mesh is fixed at both ends with a clamp.
[0009] Further, the white pipe is filled with water-stopping material between the hollow drill rod, the water-stopping material adopts bentonite, and the bentonite is wrapped with kraft paper outside.
[0010] Further, the disposable drill bit and the drill bit holder are connected through a buckle.
[0011] Further, the upper end of the well pipe is provided with a sealing cap, and the water pipe passes through the sealing cap.
[0012] The beneficial effects of the straight push type underground water and sample drilling device are as follows:
[0013] 1. The hollow drill rod and the well pipe enter the sampling layer together, which can effectively avoid the upper soil and water entering the sampling layer along the hollow drill rod, improve the accuracy of the detection result, and avoid pollution of the underground water environment.
[0014] 2. The utility model can realize rapid layered water taking in the same point area, and can significantly improve the efficiency; when building a well, the drilling hole and the well building are carried out at the same time, the hollow drill rod forms a wall protection, and the well wall collapse can be effectively avoided.
[0015] 3. The well building and sampling drilling device has the characteristics of clean and environmental protection, and no soil returns to the ground during the well building process. DRAWINGS
[0016] The utility model will be further described in detail in combination with the drawings and specific embodiments.
[0017] Figure 1 is the overall structure of the utility model embodiment sectional view;
[0018] Figure 2 is the utility model embodiment Figure 1 the enlarged view of D;
[0019] Figure 3 is the utility model embodiment Figure 1 the enlarged view of C;
[0020] Figure 4 is the utility model embodiment Figure 1 the enlarged view of B;
[0021] Figure 5 is the utility model embodiment Figure 1 the enlarged view of A.
[0022] In the figure: 1, hollow drill pipe, 2, well pipe, 21, sedimentation pipe, 22, slotted screen pipe, 23, white pipe, 3, water taking pipe, 4, drill bit holder, 5, disposable drill bit, 6, sealing cap, 7, water filtering material, 8, water stopping material. DETAILED DESCRIPTION
[0023] The utility model will be explained in further detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the structure related to the utility model.
[0024] As Figures 1-5 The specific embodiment of the direct push type underground water sampling drill tool of the utility model shown in the figure comprises a hollow drill pipe 1, a drill bit holder 4 detachably installed at the lower end of the hollow drill pipe 1, a disposable drill bit 5 fixed at the lower end of the drill bit holder 4, a well pipe 2 sleeved in the hollow drill pipe 1, and a water taking pipe 3 extending into the well pipe 2; the well pipe 2 and the hollow drill pipe 1 are sequentially filled with water filtering material 7 and water stopping material 8 from bottom to top; the upper end of the well pipe 2 is provided with a sealing cap 6, and the water taking pipe 3 extends out of the sealing cap 6 to connect a sampling pump. The water filtering material 7 and the water stopping material 8 are wrapped on the outer wall of the well pipe 2, which can effectively ensure that the water filtering material 7 and the water stopping material 8 are installed in place; the sealing cap 6 with a hole in the center is installed at the upper end of the well pipe 2, and the water taking pipe 3 extends into the well pipe 2 through the hole in the center of the sealing cap 6; then the well pipe 2 is installed in the hollow drill pipe 1; after the installation is completed, the hollow drill pipe 1 is connected with a direct push type drilling machine, power is provided by the direct push type drilling machine, and the direct push type drilling machine is used to drill downward to form a well, the well pipe 2 is directly pushed to the designed depth, the hollow drill pipe 1 is pulled out, and the well hole is drilled simultaneously with well building, the whole operation is one step to the destination, the operation is simple and convenient, safe and reliable, and efficient, when the well is built, the hollow drill pipe 1 forms a wall, which can effectively prevent the local or even overall collapse of the well wall, so as to effectively prevent the disturbance to the underground water flow field.
[0025] The well pipe 2 is sequentially provided with a sediment pipe 21, a slotted screen pipe 22 and a white pipe 23 from bottom to top; the drill bit holder 4 is fixedly connected to the sediment pipe 21; and the slotted screen pipe 22 is filled with a water filtering material 7 between the slotted screen pipe 22 and the hollow drill pipe 1. In the embodiment, the water filtering material 7 is quartz sand, and the quartz sand is wrapped with a steel wire mesh outside; and the steel wire mesh is fixed by a clamp at both ends. The white pipe 23 is filled with a water stopping material 8 between the white pipe 23 and the hollow drill pipe 1, and the water stopping material 8 is dry bentonite, and the dry bentonite is wrapped with kraft paper outside. The pipe diameter of the hollow drill pipe 1 is 3.25 inches, and the quartz sand with a particle size of 2 mm is filled outside the slotted screen pipe 22 from the connection between the drill bit holder 4 and the sediment pipe 21 upwards, and the quartz sand is fixed by using the steel wire mesh with a mesh size of 80 meshes. The quartz sand can filter part of soil particles, and the quartz sand plays a role of preliminarily filtering impurities in the underground water, which is beneficial to guarantee the quality of the monitoring water sample. The water stopping material 8 is filled above the water filtering material 7, and the dry bentonite particles with a height of 2 cm are filled outside the white pipe 23 upwards, and the dry bentonite particles are filled to the lower part of the sealing cap 6 and wrapped with kraft paper. The bentonite expands when meeting water, blocks the gap and blocks the water from other interfaces, so that the accuracy of the monitoring result can be guaranteed. The kraft paper wrapping can effectively prevent the bentonite from being adhered to the inner wall of the hollow drill pipe 1 and being extracted out during the extraction of the hollow drill pipe 1.
[0026] The drill bit holder 4 is fixedly connected to the sediment pipe 21 of the well pipe 2, the disposable drill bit 5 is connected to the bottom of the sediment pipe 21, and the drill bit holder 4 is connected to the disposable drill bit 5 by a snap connection. The drill bit holder 4 and the hollow drill pipe 1 are embedded with each other.
[0027] The length of the well pipe 2 is slightly smaller than the length of the hollow drill pipe 1. The length of the hollow drill pipe 1 is adjusted according to the required drilling depth, and the hollow drill pipe 1 is vertically drilled downwards to the designated monitoring point during the drilling process to prevent damage to the equipment. When the drilling reaches the designated depth, the hollow drill pipe 1 is extracted, so that the preassembled well pipe 2, the disposable drill bit 5, the drill bit holder 4, the water filtering material 7 and the water stopping material 8 are left in the drilled well hole. The utility model does not return any soil to the ground during the well building process, and is clean and environmentally friendly. When the underground water at a monitoring sampling depth of 10 meters is monitored, the hollow drill pipe 1 is extracted after reaching the underground 10.5 m, and the drill bit holder 4 is separated from the hollow drill pipe 1.
[0028] The opening end of the well pipe 2 is sealed by the sealing cap 6 with a circular hole in the center. During installation, the end of the well pipe 2 provided with the sealing cap 6 is located at the top end of the hollow drill pipe 1, and one end of the sediment pipe 21 is located at the end of the hollow drill pipe 1. The sediment pipe 21, the slotted screen pipe 22, the white pipe 23 and the sealing cap 6 are all made of PVC material.
[0029] The sampling pump is a peristaltic pump, one end of the water taking pipe 3 extends into the sediment pipe 21, and the other end is connected to the peristaltic pump. The peristaltic pump takes water from the water taking pipe 3 to detect the quality of the underground water.
[0030] A well platform is arranged above the water-stopping material 8 to prevent foreign matters from entering the well pipe 2. After the hollow drill pipe 1 is completely extracted, concrete is poured above the sealing cap 6 to build a protective well platform to protect the underground water environment monitoring well, and the well building is completed. The construction of the well platform can prevent other foreign matters from entering the well pipe 2 and effectively prevent the pollution of the underground water environment.
[0031] The point is re-arranged near the last monitoring point. The water filtering material 7 and the water-stopping material 8 are wrapped on the outer wall of the well pipe 2, the sealing cap 6 is installed on the upper end of the well pipe 2, and the water pipe 3 passes through the hole in the center of the sealing cap 6 and extends into the well pipe 2. Then the well pipe 2 is installed in the hollow drill pipe 1. The straight push drill provides power for drilling to different monitoring depths, which can monitor the underground water environment at different depths and significantly improve the efficiency. The stratified water can be quickly taken in the same point area, which significantly improves the efficiency.
[0032] It should be understood that the specific embodiments described above are only used to explain the present application, and are not used to limit the present application. The obvious changes or modifications derived from the spirit of the present application are still within the protection scope of the present application.
Claims
1. A direct-push groundwater sampling drill tool, characterized by: The device comprises a hollow drill rod (1), a drill bit holder (4) detachably installed at the lower end of the hollow drill rod (1), a disposable drill bit (5) fixed at the lower end of the drill bit holder (4), a well pipe (2) sleeved in the hollow drill rod (1), and a water taking pipe (3) extending into the well pipe (2).
2. A direct push groundwater sampling tool as defined in claim 1, wherein: The well pipe (2) and the hollow drill rod (1) are sequentially filled with water filtering material (7) and water stopping material (8) from bottom to top.
3. A direct push groundwater sampling tool as defined in claim 1, wherein: The well pipe (2) is sequentially a sedimentation pipe (21), a slotted screen pipe (22) and a white pipe (23) from bottom to top; the drill bit holder (4) is fixedly connected at the sedimentation pipe (21); the slotted screen pipe (22) and the hollow drill rod (1) are filled with the water filtering material (7).
4. A direct push groundwater sampling tool as defined in claim 3, wherein: The water filtering material (7) is quartz sand, and the quartz sand is wrapped with a layer of steel wire mesh outside; the steel wire mesh is fixed at both ends by a clamp.
5. A direct push groundwater sampling tool as defined in claim 3, wherein: The white pipe (23) and the hollow drill rod (1) are filled with the water stopping material (8), and the water stopping material (8) is bentonite wrapped with kraft paper outside.
6. A direct push groundwater sampling tool as defined in claim 1, wherein: The disposable drill bit (5) and the drill bit holder (4) are connected by a buckle.
7. A direct push groundwater sampling tool as defined in claim 3, wherein: The upper end of the well pipe (2) is provided with a sealing cap (6), and the water taking pipe (3) passes through the sealing cap (6).