Technical route, implementation process and completed workload

1) On the basis of previous hydrogeological work results in the work area, fully collect data on social environment, geological environment background, groundwater environmental geological problems, geological resources, etc. in the work area, and conduct comprehensive analysis and research and secondary development.

2) Focusing on the overall objectives and tasks of the project, taking the areas and villages that are seriously short of water as the focus of this exploration work, and combining with the ground investigation, we will arrange some geophysical exploration work to find out their hydrogeological conditions, groundwater types, occurrence laws and development and utilization conditions, and on this basis, determine the best hydrogeological drilling construction location.

3) In the exploration of groundwater, the demonstration project of hydrogeological drilling shall be carried out according to the principle of "combining exploration with production". The arranged boreholes can not only meet the needs of exploration, but also be used as mines for local villagers to directly solve the drinking water difficulties of the masses.

4) Strengthen comprehensive research, study and analyze the hydrogeological conditions, groundwater types, their occurrence laws and development and utilization conditions in different types of water-deficient areas, timely summarize the effective exploration techniques and water-seeking experiences of different types of groundwater in water-deficient areas, put forward the water-seeking directions in different types of areas, compile groundwater development and utilization zoning, guide the construction of groundwater development projects in other similar areas, and provide hydrogeological basis for the sustainable development of groundwater resources.

5) Establish a comprehensive project team with technical backbones of contractors as the main body and old experts as members to strengthen exchanges and cooperation.

6) Seriously implement the relevant regulations of China Geological Survey and the quality management system of Nanjing Geological Survey Center to ensure the quality of exploration work.

The exploration work is carried out according to the following steps: collecting research data → route reconnaissance → compiling design → field exploration (hydrogeological mapping, geophysical exploration and hydrogeological drilling) → indoor comprehensive research → compiling report → establishing database (figure 1- 1).

Figure 1- 1 Exploration Work Procedure Diagram

Second, the implementation process

The work of finding water and drilling wells for drought relief in Henan can be roughly divided into the following five stages:

(a) to accept the task, form a team and allocate equipment.

Nanjing Geological Survey Center has set up a project leading group and commando team for "Henan Drought-resistant Water-seeking and Well-drilling Action".

20 1 1 On February 24-25, 2008, Comrade Wang Min, Vice Minister of Land and Resources and Director of China Geological Survey, presided over the deployment meeting of water-seeking and well-drilling for drought relief in Henan Province, and decided that Nanjing Geological Survey Center would be responsible for water-seeking and well-drilling for drought relief in gongyi city, Henan Province. In response to this task, Nanjing Geological Survey Center quickly set up a leading group of "Henan Drought Relief and Water Drilling Action", with Huang Hai, secretary of the Party Committee, as the team leader and Guo Kunyi, deputy director of the center, as the executive deputy team leader, and set up a commando team of "Henan Drought Relief and Water Drilling Action" with technicians from the water environment room of the center as the main force, with researcher Jiang Yuehua as the commando team leader. At the same time, 6 sets of geophysical prospecting equipment that can be used to find water are mobilized, mainly including 3 multifunctional digital DC IP instruments (model: DZD-6A), 2 dual-frequency IP instruments (model: SQ-3C), 1 high-density resistivity instrument (model: superstring 8/IP+56) 1 56).

Commando 124 people of "Henan Drought-resistant Water Drilling Action", giving full play to the professional advantages of hydrogeology, geophysical exploration and drilling, taking the lead and selfless dedication, actively participated in the drought-resistant water exploration work. They overcame the difficulties of acclimatization, complicated geological conditions and difficult construction, took the overall situation into account and obeyed the arrangement, and many touching stories emerged: some comrades delayed the wedding for this reason, and some comrades left a starving baby.

The first batch of 17 commandos arrived in Zhengzhou, Henan Province on February 28th, and entered gongyi city on March 2nd, and immediately put themselves into the field of drought-resistant water and well drilling, and then other commandos arrived at their destination-gongyi city.

(2) Collect information, communicate in various ways, establish contact channels and establish ideas.

In order to understand the characteristics of strata and geological structures in arid areas as soon as possible, the commandos collected geological and hydrogeological data of1∶ 250,000 and1∶ 50,000 as well as some geophysical and borehole data at the first time, and consulted relevant leaders and experts from Henan Provincial Department of Land and Resources, Zhengzhou Municipal Bureau of Land and Resources, Water Affairs Bureau and gongyi city Municipal Government. Such as Mayor Yang Yanfeng, Vice Mayor Liu Zhenxiu and Shi Jianwei of gongyi city, Deputy Director Yang Shihai of Henan Provincial Department of Land and Resources, Director Rao and Deputy Director Liang of Environment Department, Chief Engineer Qi of Henan Geological Environment Monitoring Institute, Deputy Director of Zhengzhou Land and Resources Bureau, Director of Geological Environment Department and Deputy Inspector Wu Hongjie of Zhengzhou Land and Resources Bureau, Deputy Director Xu Mingjie of Zhengzhou Land and Resources Bureau, Deputy Director Lu Shoufu of Zhengzhou Water Affairs Bureau, Chief Engineer Han Gankun, Director of gongyi city Land and Resources Bureau, Deputy Director Kang Huakai, Deputy Director Fu, Director of Water Conservancy Bureau Zhang Shixin, Deputy Director, Senior Engineer Zhu Guangzhen of Henan No.1 Engineering Survey Institute, Dean of Henan Geological Survey Institute, Vice President Liu Chengshe, Dean Wang Yanguo, Director Liu Xinhao, Senior Engineer Tong Changshui, and Engineer Yan and Zhao Zong of Henan Geology and Mineral Exploration and Development Bureau. Zhu Guangzhen and Liu Jin, senior engineers of Henan Geology and Mineral Construction Engineering Co., Ltd., conducted serious communication and established communication channels, which laid an important foundation for the smooth development of the next field exploration, handling geophysical vehicle passes, determining the "three links and one leveling" (access, water supply, electricity supply and soil leveling), drilling rig entry, drilling operation and drilling rig evacuation.

During the period, members of the commando team participated in the consultation meeting on drought-resistant water exploration and well drilling organized by the Henan Provincial Department of Land and Resources, and organized two coordination meetings and business exchange meetings. According to the requirements of the Ministry of Land and Resources, China Geological Survey and Henan Provincial Department of Land and Resources, combined with the actual situation of water search in Zhengzhou mountainous area, the participants reached the following understandings: ① The project focuses on meeting the drinking water needs of people and animals in water-deficient areas, taking hillside and hilly areas as the main working areas for water search and well drilling, and taking the principle of serving local needs; (2) According to the objective conditions such as uneven distribution of groundwater in hilly and mountainous areas, great difficulty in finding water, and significant drop of groundwater level caused by coal mining, the working idea of combining easy first with difficult later and deep (well) with shallow (well) is implemented.

(3) Site investigation, well location determination, drilling rig entry, drilling operation, preparation of drilling supporting materials, pumping test, condolences from leaders, inspection and guidance.

This stage is the core of this work and the key to successful drilling. Commandos leave early and return late every day, and go to Hushanpo Village and Nanhou Village in Luzhuang Town, Li Jiayao Village, Changfeng Village and Wuling Village in Xicun Town, Heyuan Village, Shennan Village and Wansi Village in Heluo Town, Yu Pei Village, Zhang Ling Village, Kangbei Village and Yeling Village in Kangdian Town, Weilong Village in Xiaoyi Town, Blacksmith Furnace Village and Shanchuan Village in Beishankou Town and Shuidaokou Village in Xiaoguan Town. On March 8, the first drilling rig entered the site. As of March 2 1 day, 14 rigs have entered the site, and 12 rigs have started drilling, completing the reconnaissance of 33 points, IP sounding of 6 points and high-density electrical exploration of 18 points, and determining 18 holes and 4 holes to be determined.

At the same time, the commando sent people to investigate and study the quality and price of water filtering iron pipes, solid iron pipes, quartz sand filter materials and filter cloth in the market, and determined the relevant manufacturers and delivery time to ensure the smooth progress of well drilling. On March 30th, the commando team drilled the first deep well on the loess plateau of Tiejianglu Village, Beishankou Town, Gongyi, Henan Province. The pumping test was carried out until 3 am the next day. The borehole penetrated the loess layer and drove into the underlying bedrock, with a depth of 225 meters and a water yield of 46.7 cubic meters per hour. In one fell swoop, it solved the problems of domestic water for 450 people and more than 500 livestock in the village and irrigation water for 300 mu of farmland. 2011at noon on April 25th, 1: 30, with the completion of pumping test in Yungou Village, Jiajinkou Town, Nanjing Geological Survey Center supported Henan Emergency Drought Relief Commando to successfully complete the construction task of drought-resistant water-seeking and well-drilling project entrusted by the Ministry of Land and Resources and China Geological Survey after 57 days of hard field work.

During the field work of the commando, leaders at all levels are very concerned about the work and life of the commando. Dr. zhang and Dr. Hu, Deputy Director of Environment Department of Ministry of Land and Resources, China Geological Survey, Yang Shihai, Deputy Director of Henan Provincial Department of Land and Resources, Qi, Deputy Chief Engineer of Henan Geological Environment Monitoring Institute, Deputy Director of Zhengzhou Municipal Bureau of Land and Resources, and many other leaders came to offer condolences and inspection guidance. Mayor gongyi city, Vice Mayor Yang Yanfeng, Chief Engineer Zhao of Henan Bureau of Geology and Mineral Resources, Liang of Henan Geological Survey Institute, Director of Zhengzhou Bureau of Land and Resources of Henan Province, Researcher Zhang of Hydrological Environment Research Institute, Researcher Xing Weiguo of Water Environmental Geological Survey Center, Director and Deputy Director of gongyi city Bureau of Land and Resources Kang Huakai, Chief Fu, Deputy Directors Guo Kunyi, Li, Director of Office, Researcher of East China Project Supervision Office and Director of Safety Office visited the project work in person. Director Wen Dongguang and Deputy Director Hao of the Water Environment Department of China Geological Survey gave great care and support to this work and gave instructions by telephone many times.

(four) the construction of well platform, supporting pumps, pump pipes and cables, the completion of acceptance, handed over to the well.

On April 26th, the construction of 20 deep wells was completed. In May, the supporting pumps, pump pipes and cables were basically installed, and the handover procedures of water wells began one after another.

On may 9th, 20 1 1, Xing Weiguo, director of the Water Environment Center of China Geological Survey, completed the drilling task on time for the project team, and the completion rate reached.

(5) sorting out information, summing up experience and submitting reports.

May 2065438+01~ June 2065438 +02 is the stage of sorting out data, summarizing water exploration experience, compiling achievement report and drawing.

Third, complete the workload.

This emergency drought-resistant water search and well drilling work * * * completed the hydrogeological survey of1∶ 50,000 in 350km2 and 33 field wells; Using advanced geophysical equipment, the high-density geophysical profiles of 20.5km and 7.2km have been completed; Completed the determination of 23 well locations and the construction of 20 wells, with a total footage of 3453.4 meters and logging of 2800 meters; Completed 2 measured geological sections (3.0km) and 4 slices; Twenty water quality samples were tested (table 1- 1, table 1-2).

Table 1- 1 Workload of Emergency Drought Relief in Gongyi, Henan Province.

Table 1-2 Workload of Water Search, Well Location and Geophysical Exploration and Electrical Method for Emergency Drought Relief in gongyi city, Henan Province