CN-122016403-A - Water pollution detection device and detection method for geological environment investigation

CN122016403ACN 122016403 ACN122016403 ACN 122016403ACN-122016403-A

Abstract

The invention provides a water pollution detection device and a detection method for geological environment investigation, which are used for solving the problems of complex operation and cross pollution of samples when underground water is sampled in a layered manner, and comprise N fixed sleeve units, a fixed mechanism, N sampling pipes, a switching mechanism, N pouring mechanisms, N detection mechanisms, a suction pipe and a suction mechanism, wherein N is larger than 1, the sealing elements and the switching mechanism are matched for independent sampling at different depths, so that sample mixing between different water layers is effectively prevented, the accuracy and representativeness of detection results are ensured, the device can be closely attached to a drilling hole wall through the matching of an elastic element and the fixed mechanism, different apertures and geological conditions are adapted, and meanwhile, the suction mechanism can discharge liquid in the downward detection process, and the downward detection resistance and disturbance are reduced.

Inventors

XIE SHENGBIN
Hei Guangmin
XUE LIYUN
BAI PING
JIN BINGYU
ZHANG YANPING

Assignees

四川九0九建设工程有限公司
四川省华地建设工程有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260116

Claims (10)

1. The water pollution detection device for geological environment investigation is characterized by comprising N fixed sleeve units, a fixed mechanism, N sampling pipes, a switching mechanism, N pouring mechanisms, N detection mechanisms, a suction pipe and a suction mechanism, wherein N is larger than 1; The device comprises N fixed sleeve units, each fixed sleeve unit and a plurality of elastic pieces, wherein the N fixed sleeve units are detachably connected to form a detection rod body extending into a borehole, each fixed sleeve unit comprises a sleeve body, a plurality of first fixing pieces and a first elastic piece, the circumference of the wall of the sleeve body is provided with a plurality of first grooves extending along the axial direction of the sleeve body at intervals, each first fixing piece is correspondingly arranged at one first groove, the first end of each first fixing piece is connected with the sleeve body, the second end of each first fixing piece extends downwards and forms an avoidance gap for liquid to flow into the sleeve body with the sleeve body, and the first elastic pieces are sleeved on the peripheries of the sleeve body and all the first fixing pieces so as to seal the avoidance gap; The fixing mechanism comprises N fixing seats, N connecting rods, a plurality of second fixing pieces, N abutting pieces and fixing components, wherein each fixing seat is correspondingly arranged in a sleeve body and is rotatably connected with the inner wall of the sleeve body, a first through hole, a second through hole and at least one third through hole are formed in each fixing seat, the first end of each second fixing piece is connected with the bottom of one fixing seat, the second end of each second fixing piece extends downwards and is positioned corresponding to the first fixing piece, each abutting piece is connected with the bottom end of one connecting rod and is used for abutting the inner side of the second fixing piece, the top end of each connecting rod penetrates through the first through hole and is detachably connected with the bottom end of the abutting piece arranged adjacently, the top end of the connecting rod positioned at the uppermost part extends out of a drilling hole, and the fixing components are arranged on the ground and are used for fixing the top ends of the connecting rods led out of the drilling holes; the sampling tube is arranged in the third through hole in a penetrating way, the first end of the sampling tube extends out of the drill hole, a second end of the sampling tube is arranged between every two fixing seats, and the second end of the sampling tube is arranged at the lower end of the fixing seat positioned at the lowest part; The suction pipe penetrates through the second through hole, the first end of the suction pipe extends out of the drilling hole and is connected with the suction mechanism, and the second end of the suction pipe is positioned at the lower end of the bottommost fixing seat; The switching mechanism is arranged on the ground and is used for selectively communicating the first end of the sampling tube with the pouring mechanism or the detecting mechanism, when the first end of the sampling tube is connected with the pouring mechanism, the pouring mechanism is used for injecting high-pressure gas into the sampling tube so as to flush the sealing piece from the first end of the sampling tube, and when the first end of the sampling tube is connected with the detecting mechanism, the detecting mechanism is used for taking out liquid from a drilled hole.
2. The device for detecting water pollution for geological environment investigation according to claim 1, wherein the fixing assembly comprises a fixing disc and a third fixing piece, the fixing disc is used for being abutted against the ground, an avoidance hole for the connecting rod to pass through is formed in the fixing disc, and the third fixing piece is detachably connected with one end of the connecting rod extending out of the drilled hole and abutted against the upper side face of the fixing disc.
3. The apparatus of claim 1, wherein the pump mechanism comprises a first pump for pumping fluid through the pump tube.
4. The water pollution detection device for geological environment investigation according to claim 1, wherein the switching mechanism comprises N first connecting pipes, N quick-release female connectors, N second connecting pipes, N third connecting pipes, 2N quick-release male connectors, a reset assembly, a reversing assembly, a first connecting piece, a second connecting piece, a first driving assembly and a second driving assembly; One end of each first connecting pipe is connected with a first end of one sampling pipe, and the other end of each first connecting pipe is provided with one quick-release female connector; one end of each third connecting pipe is connected with the pouring mechanism, the other end of each third connecting pipe is connected with the quick-release male connector, and the second connecting pipes are arranged at intervals; Each reset component is connected with one quick-release male connector; The reversing assembly is connected with the first driving assembly, the first end of the reversing assembly is connected with N first connecting pipes through the first connecting piece, and the second end of the reversing assembly is connected with locking sleeves on N quick-release female connectors through the second connecting piece; the first driving assembly is arranged on the second driving assembly, and the second driving assembly is used for driving the first driving assembly to move along the direction perpendicular to the axial direction of the sampling tube.
5. The water pollution detection device for geological environment investigation of claim 4, wherein the reversing assembly comprises a first mounting plate, two first guide members, two oppositely arranged racks, a gear and two limiting members; The two first guide pieces are arranged on the first mounting plate at intervals, each rack is connected with one first guide piece in a sliding mode, one rack is connected with the first connecting piece, and the other rack is connected with the second connecting piece; The gear is rotatably connected with the output end of the first driving assembly and is meshed with the two racks respectively; the first driving component is used for driving the gear to move up and down; The two limiting parts are arranged on the first mounting plate at intervals and correspond to the upper limit position and the lower limit position of the rack connected with the first connecting part respectively.
6. The device for detecting water pollution for geological environment survey of claim 5, wherein said first driving assembly comprises a second mounting plate, a first driving member, a second guiding member and a fourth fixing member; the fourth fixing piece is connected with the output end of the first driving piece and is in sliding connection with the second guide piece; the gear is rotatably connected with the fourth fixing piece.
7. The water pollution detection device for geological environment survey of any one of claims 5 and 6, wherein said reset assembly comprises a third mounting plate and a second elastic member; be provided with 2N on the third mounting panel and dodge the hole, every the second connecting pipe and every the third connecting pipe corresponds to one and dodges the hole setting, the one end of second elastic component with third mounting panel butt, the other end with quick detach male joint butt, just the second elastic component cover is established on corresponding second connecting pipe or third connecting pipe.
8. The apparatus of claim 6, wherein the second driving assembly comprises a fourth mounting plate, a fifth mounting plate, a second driving member, and a third guiding member; The second driving piece and the third guiding piece are arranged on the fourth mounting plate, and the fifth mounting plate is connected with the output end of the second driving piece and is in sliding connection with the third guiding piece; the second mounting plate is arranged on the fifth mounting plate.
9. The device for detecting water pollution for geological environment investigation according to claim 5, wherein the detecting mechanism comprises a sample storage part and a detecting part, wherein the sample storage part is connected with the second connecting pipe, and the detecting part is arranged in the sample storage part and is used for detecting liquid; The filling mechanism comprises a first pipeline, a second pipeline, a three-way valve, a second pump body, a third pump body and a medicine storage box, wherein the three-way valve is respectively connected with the first pipeline, the second pipeline and the third connecting pipe; The third pump body is connected with the second pipeline and the medicine storage box respectively and is used for injecting medicines in the medicine storage box into the sleeve body through the sampling tube.
10. A method for detecting water pollution for geological environment investigation is characterized in that, comprising the water pollution detection device for geological environment survey according to any one of claims 1 to 9, further comprising the steps of: The installation step comprises the steps of connecting the fixed sleeve units together and putting the fixed sleeve units into a drilling hole, synchronously starting a suction mechanism to discharge liquid in the drilling hole when putting the fixed sleeve units into the drilling hole, and pulling the connecting rod upwards after putting the fixed sleeve units into the drilling hole so that the first elastic piece is opened to avoid a gap and is abutted with the hole wall when the first elastic piece is in contact with the hole wall, and fixing the connecting rod to the bottom surface by utilizing the fixing component; The seal piece flushing step comprises the steps of firstly connecting a first end of a sampling tube with a pouring mechanism by utilizing a switching mechanism, and flushing the seal piece arranged on a second end of the sampling tube by utilizing the pouring mechanism; and the detection step is to connect the first end of the sampling tube with the detection mechanism by utilizing the switching mechanism so as to finish sampling and detection.

Description

Water pollution detection device and detection method for geological environment investigation Technical Field The invention belongs to the field of water pollution detection, and particularly relates to a water pollution detection device and a detection method for geological environment investigation. Background In the works of environmental geological investigation, site pollution evaluation, underground water monitoring, tailing pond leakage detection and the like, it is important to know the vertical distribution and migration rule of pollutants in a gas-wrapping belt and a saturated aquifer. When the pollutants migrate downwards along with rainwater or percolate, concentration distribution with obvious difference can be formed in soil and groundwater with different depths due to the effects of adsorption, degradation, dilution and the like. Therefore, obtaining an undisturbed water sample of a specific aquifer or a specific depth interval in a borehole is a key for accurately judging a pollution range, a pollution source depth and a pollution plume. At present, the underground water in the drill holes is sampled in layers, and the following methods are generally adopted, but have obvious limitations: the single efficiency of the depth-fixed sampler is low, when an operator uses the depth-fixed sampler (such as a belleville pipe and an air bag type pump), the sampler needs to be lowered to the target depth, the sampler is recovered after sampling, and the next depth sampling is performed after emptying. The whole process needs to repeatedly operate cables or pipelines, the working procedure is complex, and the working efficiency is extremely low. The disturbance of the sampling process is large, and the sample is representatively insufficient, namely, the sample can pass through all water layers above the sample in the process of descending by using an opening type sampler such as Bei Leguan, and the internal water body of the sample can be replaced and mixed for many times before reaching the target depth, so that the sample cannot represent the pure water quality at the target depth. Disclosure of Invention In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a device and a method for detecting water pollution for geological environment investigation, which are used for solving the problems of complicated operation and cross-contamination of samples when groundwater is sampled in layers in the prior art. In order to achieve the above and other related objects, the present invention provides a water pollution detection device for geological environment investigation, comprising N fixed sleeve units, a fixing mechanism, N sampling tubes, a switching mechanism, N pouring mechanisms, N detection mechanisms, a suction tube and a suction mechanism, wherein N is greater than 1;N fixed sleeve units are detachably connected to form a detection rod body extending into a borehole; each fixed sleeve unit comprises a sleeve body, a plurality of first fixing pieces and first elastic pieces, a plurality of first grooves which extend along the axial direction of the sleeve body are formed in the circumferential direction of the wall of the sleeve body at intervals, each first fixing piece is correspondingly arranged at a first groove, a first end of each first fixing piece is connected with the sleeve body, a second end of each second fixing piece extends downwards and forms an avoidance gap for liquid to flow into the sleeve body, the first elastic pieces are sleeved on the peripheries of the sleeve body and all the first fixing pieces to seal the avoidance gap, the fixing mechanism comprises N fixing seats, N connecting rods, a plurality of second fixing pieces, N abutting pieces and fixing assemblies, each fixing seat is correspondingly arranged in the sleeve body and is rotatably connected with the inner wall of the sleeve body, a first through hole, a second through hole and at least one third through hole are formed in the fixing seats, the first end of each second fixing piece is connected with the bottom of the fixing seat, the second end of each second fixing piece extends downwards and corresponds to the first fixing piece in position, the bottom end of each abutting piece is connected with the connecting rod, the bottom end of the connecting rod is arranged adjacent to the top end of the connecting rod, the top end of the connecting rod is arranged adjacent to the top end of the uppermost connecting rod, the top end of the connecting rod is arranged adjacent to the top end of the connecting rod, and the top end of the connecting rod is arranged adjacent to the top end of the connecting rod is rotatably arranged, the device comprises a first fixing seat, a second fixing seat, a first connecting seat, a second connecting seat, a connecting rod, a suction pipe, a sealing member, a pouring mechanism and a detection mechanism, wherein the first connecting s