Last month, we received a phone call from Mr. Wang, a service provider in a certain province (privacy details omitted). He wanted to conduct a survey for a provincial geological research institute to measure the groundwater velocity and flow direction within their jurisdiction.<\/p>\n\n\n\n
Our communication with Mr. Wang went very smoothly. During the call, we roughly discussed the project situation, and when we sent the quotation, he immediately agreed.<\/p>\n\n\n\n
At first, I didn\u2019t know why, because usually clients would try to negotiate the price during the quotation stage. But Mr. Wang accepted it right away. Later, I found out that it was because the provincial Environmental Protection Bureau had specifically designated the use of AIMOLI\u2019s AML920<\/a> Groundwater Velocity and Flow Direction Meter for the survey, so the service provider had to procure it according to the plan.<\/p>\n\n\n\n Due to the presence of cracks and voids in underground soil and bedrock, water flows from high-pressure areas to low-pressure areas under pressure.<\/p>\n\n\n\n During this process, fine soil particles are carried away first.<\/p>\n\n\n\n If the water pressure increases further and is sufficient to move coarser particles, seepage intensifies and larger sand and gravel are transported.<\/p>\n\n\n\n Accidents can potentially occur in this process, though in reality it is much more complex. Therefore, determining the groundwater velocity and flow direction is crucial for better accident prevention.<\/p>\n\n\n\n Our first site visit was to a wastewater treatment plant, where the monitoring well was about 40 meters deep and the water inside was quite turbid. After communicating with the on-site supervisor, we learned that they had previously contacted several other manufacturers of groundwater velocity and flow direction meters.<\/p>\n\n\n\n However, when these manufacturers arrived at the site, they all shook their heads in despair and left.<\/p>\n\n\n\n Some of their equipment had a lifting range of only 10 meters, unable to even reach the water surface, while others could only measure the mid-water layer. In such turbid conditions, their instruments simply could not work.<\/p>\n\n\n\n