CN212159171U

CN212159171U - Drilling device for detecting and collecting leachate of refuse landfill

Info

Publication number: CN212159171U
Application number: CN202020851188.1U
Authority: CN
Inventors: 方红亮; 舒茂; 王云亮; 余松; 徐虎林; 杭程
Original assignee: Jiangsu Huadong Geological Engineering Co ltd 810 Team Jiangsu Nonferrous Metals East China Geological Exploration Bureau
Current assignee: Jiangsu Huadong Geological Engineering Co ltd 810 Team Jiangsu Nonferrous Metals East China Geological Exploration Bureau
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-15
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a drilling device for detecting and collecting percolate in a refuse landfill, which comprises an upper drill rod, a lower drill rod and a drill bit which are connected in sequence from top to bottom, the upper drill rod and the lower drill rod are hollow tubes, at least one third of the circumference of the tube wall of the middle lower part of the upper drill rod is provided with a steel filter screen, the center of the tube of the upper drill rod is provided with a cable guide tube, a limiting damping block is sleeved outside the cable guide pipe to be fixed, a cavity is left between the steel filter screen and the limiting damping block, an annular flow guide damping block is arranged at the bottom of the upper drill rod and close to the inner wall, the flow guide damping block and the limiting damping block surround a flow guide hole at the bottom of the upper drill rod, the inner surface of the flow guide shock absorption block is provided with a plurality of sensor placing points, percolate collectors are arranged inside the lower drill rod and the drill bit, and the percolate collectors are cylindrical cavities with closed bottoms and open tops. The device can rapidly take percolate and detection data in real time, saves time, reduces cost, has a simple structure, is convenient to operate, and has strong practicability.

Description

Drilling device for detecting and collecting leachate of refuse landfill

Technical Field

The utility model belongs to landfill site investigation and sampling device field, more specifically relates to a drilling equipment that is used for landfill leachate to survey, collect.

Background

The leachate of the municipal refuse landfill is high-concentration organic wastewater with complex components, and if the leachate is directly discharged into the environment without treatment, serious environmental pollution is caused. For the purpose of protecting the environment, it is essential to treat the leachate. Landfill leachate is a product of the gravity flow of liquid in a landfill site and mainly comes from rainfall and the internal water content of the garbage. The properties of the percolate vary over a considerable range, since many factors in the flow of the liquid may influence the properties of the percolate, including physical, chemical and biological factors. Therefore, the detection of the landfill leachate is very important for the treatment of the leachate. At present, a groundwater monitoring well is mainly set up for a landfill groundwater sample through drilling, and then leachate samples are adopted from the well for detection. In the prior art, the processes of drilling, well construction, leachate taking and earth surface detection are complex, time and labor are consumed, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming above not enough, design a collection probing, water quality testing, filtration liquid sample device as an organic whole to the landfill, obtain the filtration liquid water level of the landfill body, the preliminary quality of water condition through once creeping into to take filtration liquid sample, can take filtration liquid and detection data fast in real time, save time, reduce cost, simple structure, the operation of being convenient for, the practicality is strong.

In order to achieve the above purpose, the utility model provides a drilling device for detecting and collecting percolate in a refuse landfill, the device comprises an upper drill rod, a lower drill rod and a drill bit which are sequentially connected from top to bottom, wherein the upper drill rod and the lower drill rod are hollow tubes, at least one third of the circumference of the pipe wall of the middle lower part of the upper drill rod is provided with a steel filter screen, the center of the pipe of the upper drill rod is provided with a cable guide pipe, a limiting damping block is sleeved outside the cable guide pipe to be fixed, a cavity is left between the steel filter screen and the limiting damping block, an annular flow guide damping block is arranged at the bottom of the upper drill rod and close to the inner wall, the flow guide damping block and the limiting damping block surround a flow guide hole at the bottom of the upper drill rod, the inner surface of the flow guide shock absorption block is provided with a plurality of sensor placing points, percolate collectors are arranged inside the lower drill rod and the drill bit, and the percolate collectors are cylindrical cavities with closed bottoms and open tops.

The bottom end of the percolate collector is a closed end in the drill bit, the top end of the percolate collector is an open end at the upper part of the lower drill rod, and the top end of the percolate collector is provided with a guide ring for guiding percolate passing through the guide hole to the percolate collector; and a cylindrical fixed damping block is arranged between the bottom end of the percolate collector and the drill bit.

Water conservancy diversion snubber block, spacing snubber block and fixed snubber block are rubber foam snubber block, at the in-process shock attenuation of the device probing, play respective water conservancy diversion, spacing and fixed etc. effect simultaneously.

Spacing snubber block's cross-section is Y shape, and space between cable pipe and the last drilling rod pipe wall is filled on upper portion, leaves the space between lower part and steel filter screen and the water conservancy diversion snubber block, spacing snubber block and cable pipe are further fixed to spacing snubber block's top packing compact heap.

The two steel filter screens can be symmetrically arranged along the central shaft of the upper drill rod, the height of each steel filter screen is 12-18 cm, the length of each steel filter screen is preferably 15cm, and the single steel filter screen accounts for 18% -25% of the circumference of the wall of the upper drill rod and is preferably 20%; the filter diameter of the steel filter screen is 10-20 meshes, so that the filter liquor can enter while impurities cannot enter. The drilling rig is whole highly for 90 ~ 120cm, and each size parameter can satisfy the demand of surveying, collecting filtration liquid, the operation of being convenient for again. The steel filter screen can also directly become the filter screen with the corresponding part direct processing of pipe wall in other parts of pipe wall through screw fixed connection.

The water conservancy diversion snubber block can include upper and lower two parts, the upper portion inner surface be the inclined plane, make the water conservancy diversion hole for toper water conservancy diversion hole, existing being favorable to filtration liquid inflow filtration liquid collector, processing is also simpler.

Go up drilling rod, lower drilling rod and drill bit and all pass through threaded connection, simple structure is convenient for operate, the drill bit is solid percussion bit, and the impact force is strong, is applicable to various soil property.

This device is the integrative device of landfill probing, water quality testing, filtration liquid sample, obtains the filtration liquid water level of landfill body, preliminary detection quality of water condition through once creeping into to take the filtration liquid sample.

The drilling method comprises the following steps: the device is pressed into a refuse landfill body through a direct-push type drilling machine, and the drilling depth is gradually deepened to a target horizon through an additional connection drill rod.

The sampling method comprises the following steps: the landfill body has the characteristic of high permeability coefficient, and the percolate can enter a percolate collector through the filter screen and the diversion holes after drilling to a percolate layer, so that the percolate is collected.

The quick test method comprises the following steps: in the percolate flowing way, various sensors can be placed at the sensor placing points on the inner surface of the flow guide shock absorption block, and cables connected with the sensors penetrate through the cable guide pipes, so that the PH, the conductivity, the COD, the BOD and other parameters of the percolate can be monitored in real time and are conducted back to the ground monitoring device through the cables.

Compared with the prior art, the beneficial effects of the utility model are that: the device of the utility model overcomes the complex flow of drilling, well building, leachate taking and earth surface detection in the prior art, can rapidly take leachate and detection data in real time, saves time and reduces cost; the device can be matched with the direct-push type soil drilling machine accessories, and is convenient to operate. Device simple structure, the practicality is strong.

Drawings

Fig. 1 is a schematic structural view of a drilling rig for detecting and collecting leachate in a refuse landfill.

Fig. 2 is a cross-sectional view taken at point A, B, C in fig. 1.

In the figure: 1-upper drill rod, 2-lower drill rod, 3-drill bit, 4-cable conduit, 5-steel filter screen, 6-percolate collector, 7-diversion shock-absorbing block, 8-limiting shock-absorbing block, 9-cylindrical shock-absorbing block, 10-sensor placing point, 11-diversion ring, 12-pressing block and 13-diversion hole.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and specific examples.

Examples

According to the drilling device for detecting and collecting the percolate in the refuse landfill shown in the figures 1 and 2, the device comprises an upper drill rod 1, a lower drill rod 2 and a drill bit 3 which are sequentially connected from top to bottom, wherein the upper drill rod 1 and the lower drill rod 2 are hollow pipes, two steel filter screens 5 are arranged on the pipe wall of the middle lower part of the upper drill rod 1 and are symmetrically arranged along the central shaft of the upper drill rod 1, the circumference of a single steel filter screen 5 accounts for 20 percent of the circumference of the pipe wall of the upper drill rod 1, a cable guide pipe 4 is arranged at the center of the pipe of the upper drill rod 1, a limiting shock absorption block 8 is sleeved outside the cable guide pipe 4 to be fixed, a cavity is reserved between the steel filter screens 5 and the limiting shock absorption block 7, an annular flow guide shock absorption block 7 is arranged at the bottom of the upper drill rod 1 by sticking to the inner wall, the flow guide shock absorption block 7 and the limiting shock absorption block 8 enclose a flow, and percolate collectors 6 are arranged inside the lower drill rod 2 and the drill bit 3, and the percolate collectors 6 are cylindrical cavities with closed bottoms and open tops.

In this embodiment, the bottom end of the percolate collector 6 is a closed end in the drill bit 3, the top end of the percolate collector is an open end at the upper part of the lower drill rod 2, the top end of the percolate collector is provided with a guide ring 11, and a cylindrical fixed damping block 9 is arranged between the bottom end of the percolate collector 6 and the drill bit 3. The diversion shock absorption block, the limiting shock absorption block and the fixed shock absorption block are all rubber foam shock absorption blocks.

In this embodiment, the cross section of the limiting damping block 8 is Y-shaped, the upper part is filled with a gap between the cable guide pipe 4 and the pipe wall of the upper drill rod 1, a gap is reserved between the lower part and the steel filter screen 5 and the flow guide damping block 7, and the top of the limiting damping block 8 is filled with a compression block 12.

This embodiment the height of steel filter screen 5 is 15cm, and the filter diameter is 10 ~ 20 meshes, drilling equipment's whole height is 95 cm.

The diversion shock absorption block 7 described in this embodiment includes an upper portion and a lower portion, and the inner surface of the upper portion is an inclined surface, so that the diversion hole 13 is a conical diversion hole.

In the embodiment, the upper drill rod 1, the lower drill rod 2 and the drill bit 3 are all connected through threads, and the drill bit 3 is a solid percussion drill bit.

Claims

1. The drilling device for detecting and collecting the leachate in the refuse landfill is characterized by comprising an upper drill rod (1), a lower drill rod (2) and a drill bit (3) which are sequentially connected from top to bottom, wherein the upper drill rod (1) and the lower drill rod (2) are hollow tubes, at least one third of the circumference of the tube wall of the middle lower part of the upper drill rod (1) is arranged as a steel filter screen (5), a cable guide pipe (4) is arranged at the center of the tube of the upper drill rod (1), a limiting damping block (8) is sleeved outside the cable guide pipe (4) to be fixed, a cavity is reserved between the steel filter screen (5) and the limiting damping block (8), an annular flow guide damping block (7) is arranged at the bottom of the upper drill rod by sticking the inner wall at the bottom of the upper drill rod (1), a flow guide hole (13) is formed by enclosing the flow guide damping block (7) and the limiting damping block (8) at the bottom of the upper drill rod, and a plurality, and percolate collectors (6) are arranged inside the lower drill rod (2) and the drill bit (3), and the percolate collectors (6) are cylindrical cavities with closed bottoms and open tops.

2. Drilling rig for landfill leachate detection and collection according to claim 1, characterized in that the bottom end of the leachate collector (6) is a closed end inside the drill head (3) and the top end is an open end on the upper part of the lower drill pipe (2), and the top end is provided with a flow guiding ring (11).

3. Drilling rig for landfill leachate detection, collection according to claim 1, characterized in that a cylindrical fixed shock block (9) is provided between the bottom end of the leachate collector (6) and the drill bit.

4. Drilling rig for landfill leachate detection, collection according to claim 3, characterized in that the diversion shock block (7), the limiting shock block (8) and the fixed shock block (9) are all rubber foam shock blocks.

5. The drilling rig for detecting and collecting percolate in landfill sites according to claim 1 is characterized in that the limiting shock absorption block (8) is Y-shaped in cross section, the upper part of the limiting shock absorption block is filled with a gap between the cable guide pipe (4) and the pipe wall of the upper drill pipe (1), a gap is reserved between the lower part of the limiting shock absorption block and the steel filter screen (5) and the diversion shock absorption block (7), and the top of the limiting shock absorption block (8) is filled with a compression block (12).

6. The drilling rig for detecting and collecting percolate in landfill sites according to claim 1 is characterized in that the two steel filter screens (5) are symmetrically arranged along the central axis of the upper drill pipe (1), the height of the steel filter screens (5) is 12-18 cm, and the circumference of the single steel filter screen (5) accounts for 18-25% of the circumference of the pipe wall of the upper drill pipe (1).

7. The drilling rig for landfill leachate detection and collection according to claim 1, wherein the steel screen (5) has a mesh size of 10-20 mesh.

8. The drilling rig for landfill leachate detection and collection according to claim 1, wherein the diversion shock absorption block (7) comprises an upper part and a lower part, the inner surface of the upper part is an inclined plane, so that the diversion holes (13) are conical diversion holes.

9. Drilling rig for landfill leachate detection, collection according to claim 1, characterized in that the upper drill pipe (1), the lower drill pipe (2) and the drill bit (3) are all connected by screw thread.

10. Drilling device for landfill leachate detection, collection according to claim 1, characterized in that the drill bit (3) is a solid percussion drill bit.