Original Title: Finding Water and Drilling Wells for Poverty Alleviation in Southern Jiangxi: Case Analysis and Process Record (Part II) Part 1 Indoor comprehensive research and judgment, accurate well determination in the field Click to Read: Gannan Poverty Alleviation Water Search and Well Drilling: Case Analysis, Process Record (Part I) Part 2 Fast drilling verification and intelligent water pumping First, rapid drilling verification, chopsticks inserted tofu 2017.1.8, Sunny, Sunday At the foot of Yangshan Mountain, the national flag rises in the west of Xixia Village. At 16:58, the first well (xgzk1) in Xingguo County, Gannan Poverty Alleviation and Water Exploration of Shuihuan Center was drilled, with a designed hole depth of 120 m. Expand the full text At 18 o'clock, the footage was 7.5m, the loose layer was penetrated, the bedrock was entered, and the 325mm retaining pipe was lowered for 8m. In the morning, go to the construction site and make disclosure with the second drilling team. At 4:30 in the afternoon, the drilling rig was ready. At 17:00, the drilling was spudded. The bedrock was found at 7.5m, and the 8m long, 325mm steel retaining pipe was lowered. The drilling speed is so fast. Photo 23, 24 Open the first drill, and the machine is roaring. Implementation of hydrogeological drilling 1. Device configuration Drilling rig model: SL-800 A crawler power head drilling rig. Type of derrick: mast type. Power machine type: diesel engine. Other equipment: DWQ1200 XXH air compressor, submersible pump, ultrasonic flowmeter, 50 kw generator set, automatic recorder for pumping test, etc. 2. Drilling technology and drilling parameters (1) Drilling process Pneumatic Dth hammer is used to drill XGZK01 hole, Ф350mm Dth hammer bit + TH10 impactor + 114 drill pipe is used for opening, Ф305mm Dth hammer bit + TH8 impactor + 114 drill pipe is used after reducing, reducing depth is 7.50 m, and final hole depth is 120.00 m. (2) Drilling parameters Pneumatic Dth hammer is used for full drilling with positive circulation. The technical parameters are as follows: ① Air volume: 34m 3/min. ② Wind pressure: 3.3 MPa. ③ Weight on bit: 16-18k N. ④ Speed: 20 ~ 50r/min. 3. Coring One rock debris sample is taken every 4.5m in the whole hole, and 35 rock debris samples are taken in total. The cores taken shall be arranged in turn, filled in and labeled in time, and recorded by hydrogeologists in time. In the process of logging, in addition to the description according to the general hydrogeological requirements, the geologists have made a detailed study and description of the physical properties of the rock strata. In particular, the minerals in the rock formation are described in detail, such as the main mineral components and their contents, sand, clay, powder and organic matter contents. For sandy and gravelly soil, the contents of sand and gravel are distinguished, and the roundness of gravel is described; for clayey soil, the color, natural state, clay powder content and water content of the sample are described. In addition, the rock strata exposed by drilling are described and divided in detail to determine the lithology of aquifer, aquiclude and basement. 2017.1.9 The first drill likes to come out of the water. Look at my acupoint work. With the mission of poverty alleviation, the Ministry and the Bureau send warm care to the old liberated areas; sweat turns into spring water and moistens the red earth. After 8 hours of down-the-hole hammer drilling, the first drill in Xingguo County of Gannan Poverty Alleviation and Water Exploration of the Water Ring Center successfully produced water, with a rough water volume of 30m ³/H. This once again shows the technical strength of water exploration in the bedrock mountain area of Shuihuan Center, the synergistic advantages of multi-professional and multi-method integration in tackling key problems, and the "acupoint" magic of the iron triangle team in water exploration. The No.1 well is located in the determined Cretaceous glutenite water exploration target area. The drilling equipment entered the site on January 8, 2017 and spudded at 16:58 on the same day. Bedrock is found in the shallow loose layer at 7.5m, and a small amount of shallow water is found at 14.5m; quartz sandstone is initially found when drilling to 102.5m, and the fault is exposed, with a water yield of about 5m ³/H, above which are purple argillaceous siltstone, sandstone and mudstone; quartz sandstone is found when drilling to 129m, with a water yield of 8 m ³/H; When drilling to 133.5m, the granite formation is exposed, and the water volume increases to 10m ³/H; when drilling to 135m and 139m, the water volume increases to 30m ³/H, and the water yield is the highest in this area; when drilling to 155.5m, the final hole is completed. The stratum exposed by the borehole is basically consistent with the stratum predicted by the previous team, and a new breakthrough has been made in the understanding of the regional geological water-rich law, which provides a new direction for water exploration in similar areas in the future. The preliminary investigation shows that the water required for drinking water and tobacco field irrigation in Qixia Village is about 10m ³/H. However, the local stratum has poor water-rich conditions and complex structure. The township government and the masses have doubts about whether an ideal water source can be found in the local area. In addition, the local economic conditions are poor, and no deep water drilling has been carried out. The successful implementation of the borehole basically met the water demand of the local people, and also played a good demonstration role for the local search for follow-up water sources. Arriving at the construction site at nine o'clock, the drilling speed of the down-the-hole hammer was really fast. In the Cretaceous sandstone and mudstone formation, it took almost ten minutes to drill a 4.5m drill pipe at the beginning. To 50m, the red mudstone was blown up, 60m or 70m, red soil, 80m, red soil, 84.5m, still the same, we rushed back to the county for dinner, we were a little uneasy, although we did not say it. More than two o'clock, the phone told the water, everyone rushed to get on the car, on the way, everyone's words obviously increased. He got out of the car and met the drilling personnel. He said that there was estimated to be ten cubic meters of water. In front of the drilling rig, I asked the captain and learned that there was water at 102.5m. I checked the rock debris and found that it was a layer of crushed coarse sand. I judged that it was granite weathering crust or fault zone. With the increase of depth, the water volume was increasing. Li Gong proposed to deepen from 120m to 140m, and to 129m, the water volume suddenly increased, 20 cubic meters, 30 cubic meters. It continued to surprise people's hearts. We returned at six o'clock and told them to continue to deepen to 155m. Everyone rejoiced, went to the kitchen on the 7th, added food, served wine, and drank a little wine. All of a sudden, everyone's pressure was relieved and they had a good time. Tell the leaders of the center that they are as happy as we are. Tell the leaders of Xingguo County to visit you at the scene tomorrow afternoon. Photos 25, 26 and 27 show that the first borehole successfully produced water, which verified the geological and geophysical exploration results. 2017.1.10, sunny, windy The drilling rig is transferred to the new well location, and the wind spreads the red flag hunting sound. After xgzk1 hole in Xixia village, Xingguo county successfully produced water yesterday, the drilling rig was transferred to xgzk2 hole today and is now ready to start drilling tomorrow. The geological conditions of this hole are similar to those of the hole No.1 just completed, and it is also a secondary structure of the nearly north-south compresso-shear fault in front of the Yangshan Mountain, with a design hole depth of 120m. This afternoon, Wang, deputy head of Xingguo County, visited the comrades of the project team at the construction site. After the project team reported on its work and achievements, he praised the national team for achieving such rich results in such a short period of time. At the same time, he inquired in detail about the amount of groundwater, the development and utilization plan and the impact of exploitation on the environment. I also introduced the legend of Zhu Li. After listening to the introduction at the No.2 hole, he went to the No.1 hole for investigation. He instructed the cadres of Baocun Village in the township to consider the funds for drinking water projects and bring the benefits of wells into full play. At 17:15, the work summary meeting invited Zhu and Li to review and analyze the objectives and achievements of the previous work deployment, and also put forward suggestions for future work. According to the observation, the buried depth of water level of xgzk1 hole rises from 14.9 m at 8 o'clock to 13.7 m at 16 o'clock today. Simple Hydrological Observation of Hydrogeological Drilling In the process of drilling, the aquifer was found in time, and the hydrogeological problems such as water abundance of the aquifer were preliminarily determined. It mainly observes the groundwater level, water temperature, water gushing and leakage. In addition, detailed observation records shall be made for the drilling conditions (such as drill dropping, drill sticking, drill burying, hole wall collapse, sand gushing, gas escape, etc.) and the positions of layer change and hole change. Measure the water level after lifting the drill and before tripping in. During the drilling of XGZK01 hole, it was slightly wet at 12.00 m, a small amount of water was seen at 16.50 m, continuous water was seen at 25.50 m, no water leaked during drilling, water burst at 103.00 m, the water inflow was about 20.00 m ³/H, the water volume increased at 135.00 m, and the visual water volume was about 35.00 m ³/H. Photo 28 The commandos took a group photo. Photo 29 Water level observation of No.1 hole Photo 30 No.2 hole drilling machine in place 2017.1.11, Wednesday, light rain Xingguo, light rain. In the morning, the first group of members of the Gannan poverty alleviation and water search commando team withdrew from the base camp and set off. Rain, farewell? Retain? Rain is the accumulation of water vapor in the first well? Happy and grateful for the liberation to see the light of day and serve the world? Wake up at six o'clock and revise the special report. Before seven o'clock, they went downstairs to see Li, Zhu, and Xiao Wang off to Nanchang and then returned to the insurance high-speed railway. At 7:20, the two drivers, Li and Yang, followed by Geophysical Prospecting Company and Yang, returned to the insurance. After getting on the bus with breakfast, he and Liu went to the Ningdu Mining Administration Bureau to communicate about the problems in the land quality investigation area of another project, and rushed back to Xingguo at 12:20. The No.2 hole was drilled at 8 o'clock,dth drill bits, with a footage of 50m at noon and a water yield of 3m ³/H at 2 o'clock. After half an hour, the water yield suddenly increased to 50-70 m ³/H. I will no longer change the special report, and I will write it together after determining the approximate water output of No.2 hole. When I arrived at the construction site at 3 o'clock, I saw that the smoke field covered with film was soaked in water, and it was a vast ocean. The captain estimated that the current water volume was 100m ³/H. Because of the large amount of water, the drilling speed is affected. By 3:30, the footage is 97m, and the estimated water volume is conservatively 70-80m ³/H. Far more than we expected. Report to local leaders and central leaders by phone or SMS. The water volume is too large. The pipe of 219 mm originally planned is a little thin and needs to be increased to 245 mm. The pump of 50 square meters is also small and needs to be replaced with a large pump. The captain was happy, General Manager Liao was surprised, and Manager Hu smiled. In the evening, Xingguo TV broadcasted the news that the county magistrate Wang went to the construction site. Extra: "Yin River" found, found!!! Hole xgzk2 in Xingguo county was drilled at 8 o'clock today. At present (note: 15:30), the drilling depth is 97m, and the water output during the drilling process of the down-the-hole hammer is estimated to be 70-80m3/H, which is twice that of hole 1? Twice..! It is 20 times of the maximum water yield (102m 3/d per day) of the known boreholes in the Cretaceous strata of the Xingguo Red Bed Basin! It's so big that it affects the drilling speed! During the period of field investigation and geophysical prospecting, an old man told us that there was a Yin River flowing through Yangshan in the west of Xixia Village. Today, we have found, we have found, that the Yin River is this water-rich tectonic zone, this is no longer a legend! The Iron Triangle Team of Water Search in Bedrock Mountain Area casts a new legend in the poverty alleviation and water search in southern Jiangxi! Have a long tassel in hand, today again bound black dragon! Technical Summary of No.2 Hole Gannan Poverty Alleviation and Water Exploration Project reported another success. During the construction of XGZK2 borehole, the water yield was roughly measured to be more than 80m ³/H. Combined with XGZK1 borehole, the local villagers' traditional understanding of "no available water source in Qixia Village" was completely overturned, which provided a strong guarantee for local economic development and industrial planning. GZK2 borehole encountered water at 80.5m, the lithology is Cretaceous gravel layer, the water volume at 84-85m increases sharply to 80m ³/H, the lithology is granite, sharp and poorly sorted quartz debris can be seen in the rock debris, and there is drill dropping in this section during drilling. It is concluded that 84-88 m is the structural fracture zone, which is the groundwater catchment corridor and the main runoff channel, and can be called the "Yin River" of the local villagers' legend. According to the interpretation results of remote sensing and geophysical exploration in the early stage, the logging information of the cuttings taken is analyzed, the 107 m variable diameter of the borehole is designed, and the final hole is expected to be 134 m, and the following two understandings are obtained: 1. Secondary structural fracture zone and its intersection zone of the main controlling structure in the north-south direction It is the main occurrence area of vein groundwater. 2. Contrast Borehole XGZK1 shows that the water production horizon moves upward and the water volume is more abundant, which reveals that the well location is close to the water-blocking structure under the new house and is located in the mesh area where the secondary structure intersects with the main control structure, which is a typical type of water storage structure on the edge of the mountain basin. Photo 31-32: Flooded tobacco fields 2017.1.12, Thursday, light rain Two demonstration wells have been drilled by down-the-hole hammer drill, and the second drilling team is awesome! Today, we detect the well, observe the water level and prepare for the pumping test. In the morning, the special report on the results of poverty alleviation and water search was revised and issued. Then he went to the construction site, and when he got there, he had drilled 120m and reached the quartzite vein. Li suggested to drill another 10m in order to find out the situation of the vein. He proposed to drill three drill pipes, 13.5m. I arrived at the construction site again before two o'clock in the afternoon, and I had finished three in an hour, with a total of 133.5m. In the rain, the drilling rig is shut down, and the pipe is pulled out for fear of slipping,mining drill bit, which is unsafe. The pipe , complete the task as soon as possible, go home for the New Year as soon as possible, and give it to the people to use as early as possible. When I went to the construction site in the s 28 hours, and two boreholes with a diameter of 305 mm and a depth of 155.5 m and 133.5 m were completed. Down-the-hole hammer drilling technology is powerful, the second team of brothers are capable and able to bear hardships, cattle! Hole 1: 155.5m, dth drilling hammer ,overburden drilling systems, 0-7.5m loose layer, 7.5-129m Cretaceous argillaceous sandstone, 129-155.5m tectonic zone and granite. The drilling was spudded at 16:58 on January 8, stopped after the bedrock was seen, and the 8m retaining pipe was run in and finished at 18:00; the drilling was started at 8:00 on January 9 and completed at 18:30; the drilling time was 11.5 hours. Hole 2: 135.5m, 0-4m loose layer, 4-84m Cretaceous glutenite, 84-135.5m tectonic zone and granite. On January 10, the drilling rig was transferred to No.2 e to hold on until the well pipe diameter of 219 mm, a buried depth of static water level of 11.91 m, a water stop position of 0-65.42 m, and an actual water yield of 2125 m ³/d. Water supply projects, including water storage tanks, purification equipment, water supply equipment,Tapered Rock Bit, installation and laying of main water pipelines, have been completed and handed over to local governments for use in the near future. Popular science articles are compiled into the book "Protecting the Earth, Wonderful Geology" Excellent Popular Science Works. Water Environment Center of China Geological Survey Zhang Fucun's Geological WeChat Selection (Click on the link to read) Return to Sohu to see more Responsible Editor:. wt-dthtools.com