The old monitoring well, the monitoring data is abnormal, and the problem is identified with the downhole digital TV
Mr. Wang of Shandong found us, saying that we are doing a good job in the field of groundwater, and want us to help solve a problem, it turns out that Mr. Wang is responsible for the area of 30 groundwater monitoring wells, each well is equipped with groundwater monitoring equipment, mainly water level and water temperature, the data of 2 wells in the last week is abnormal, and wants to find us to solve. There is no problem with the equipment after testing, and it has been a week of tossing Mr. Wang back and forth, and if it doesn't work, someone will come down to track it down.
We are focusing on the groundwater environment instrument, it is indeed a certain achievement, but we have not yet encountered the situation of dealing with abnormal monitoring data, Wang is always an acquaintance to introduce, and Mr. Wang explained the situation, can only go to the scene to see, but can not guarantee anything. Mr. Wang was very happy to see that we had sent someone over, but I was a little apprehensive in my heart, after all, it was not our equipment.
After the engineer Zhao Gong arrived at the scene, he shook his head when he saw the situation of the monitoring well, the maintenance of the well is too poor, and the water sample is relatively turbid, if the equipment detection is no problem, then the probability is that the well is not well maintained, and the screen hole is blocked. Zhao Gong suggested using our underground digital TV to observe the well, first see the top view picture, the water is relatively turbid, and then look around the well wall 360 °, the whole well wall is relatively bad, especially the underwater part, overgrown with green algae, attached to thick silt. You can't see the sieve holes, and they are basically blocked, so in this case, the data can be normal is abnormal.
The bottom and wall of the monitoring well were observed in detail with the underground digital TV, and Mr. Wang's people were also watched. Mr. Wang asked, what kind of well should be washed? Do you have well washing equipment? In your groundwater sampling system, the well washing pump is used to wash the well before sampling, and it is not suitable for this kind of well washing. First of all, we have to clean up the attached sludge and green algae. Finally, he gave Mr. Wang some selection suggestions and maintenance plans.
After about ten days, Mr. Wang called and said that the problem was finally solved, and he expressed his gratitude for this, although it was not for us to deal with, but we used our underground digital TV to find out the problem, and finally it was dealt with according to our Zhao Gong's suggestion. Finally, he also said that he intends to purchase a downhole digital TV, and the supervision equipment for the construction and maintenance of groundwater monitoring.
With the construction of more and more groundwater monitoring wells, the requirements for well construction and maintenance quality are becoming more and more urgent, and a set of equipment is urgently needed to supervise and manage the quality of well construction and maintenance.
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