Fengpei coalfield includes 9 large and medium-sized minefields and 6 small ones, including sanhejian, Gulong, Yaoqiao, Datun, Kongzhuang, Zhangshuanglou, Longdong, Dinglou and Peiqi. The genetic type belongs to coastal peat swamp sedimentary coalfield. Coal-bearing strata mainly include Taiyuan Formation of Upper Carboniferous and Shanxi Formation of Lower Permian. Except for Taiyuan Formation exposed in Huashan, Fengxian County and Changshi sandstone in Shanxi Province, all coal-bearing strata are covered by Quaternary, with a thickness of 74-578 meters, which is a concealed coalfield. The total thickness of coal-bearing strata is about 272m, with coal 15-20 layers. The average total thickness of coal seams in each mining area is 681-16.2m, and the coal-bearing coefficient is 6.2%- 15.75%. 3-6 layers of minable and partially minable coal seams with a thickness of 5.5- 12.5438+0m. Shanxi Formation has good coal-bearing property, with coal-bearing coefficient of 5.02%, coal-bearing 2-5 layers and thickness of 2.23-8.87 meters, with an average of 5.68 meters. Including minable and partially minable 1-3 layers, with a thickness of1.35-6m, with an average of 4.7m.. The maximum thickness of single layer11.64m is thin-thick coal. The coal-bearing property of Taiyuan Formation is poor, with coal-bearing coefficient of 2.90%, coal-bearing 8- 15 layers, thickness of 3.11-6.3m, with an average of 4.6m.. It contains 2-6 layers of minable and partially minable coal, with a thickness of 0.79-4.30m, and belongs to thin-thick coal. The coal seam is dominated by colloidal substances, followed by silk carbon substances, and the local silk carbon substances in the coal seam of Shanxi Formation account for 57.7%. Microscopic coal and rock types are bright dark coal and bright coal. The rank of coal quality is mainly medium-easy gas coal and fat coal, followed by lean coal, anthracite and natural coke. Local magmatism is strong, and natural coke accounts for more than half. Analysis of raw coal contains: moisture 1.06%, ash 7.02%-36.47%, volatile 34.11%-48.01%,calorific value 2.47-3.72kJ/kg, and carbon content of clean coal. Shanxi Formation is medium ash, low sulfur and low phosphorus coal, while Taiyuan Formation is medium ash, high sulfur and low phosphorus coal. It can be used as power, coal blending and coking coal.
1956, the 1 ∶ 1 10,000 gravity survey conducted by the second and third teams of the North China Comprehensive Survey Brigade of the Geophysical Exploration Bureau of the Ministry of Geology, for the first time, came to the conclusion that there was a concealed local uplift under Quaternary in Fengshui area. After the discovery of Jiulishan Coalfield, in order to expand the victory, East China Coalfield Geological Exploration Bureau 124 Team (hereinafter referred to as 124 Team) conducted an investigation in 197 1 Fengpei area, and found the Cambrian strata in Qishan and the Sinian strata in Huashan in Fengxian County (by the fifth geological team of Jiangsu Geological Bureau in Huashan) Drilling began in June and Ordovician and intrusive rocks were discovered. It is considered that the Cambrian-Ordovician uplift in this area is deeply affected by strike faults. If there are coal measures, they are only preserved in a small area on the edge of the fault, and the Quaternary alluvium is thick, so there is no need for further exploration, so the work is stopped. 1958 Xuzhou office of east China coalfield geological exploration bureau (formed by the merger of the former 124 team and other units, referred to as Xuzhou office) arranged a large-scale electrical survey in fengshui area. Yao Duoyin, Li, Gu and Zhao, technical leaders of the Second Team of Electrical Method of East China Coal Field Geological Exploration Bureau, carried out the project in an 8×2 km grid in the abundant water area on 1: 1 in March, 958. In February, 65438+ 1958 submitted the handbook of electrical prospecting data in Fengpeiju area, analyzed the geological structure under Quaternary, delineated the prospective coal-bearing area, clearly reflected the east-west concealed uplift about 40 kilometers long and 9 kilometers wide between Fengxian and Shandong Danju, and provided a promising coal-bearing area for further survey and coal exploration. 1April, 958, Xuzhou office (in June of the same year, Xuzhou office was placed under the leadership of Jiangsu Coal Industry Bureau, and its subordinate teams formed Jiangsu Coalfield Geological Exploration Team, hereinafter referred to as Jiangsu Coal Industry Bureau 169 Coalfield Geological Exploration Team), engineer Sun Shaogeng, and geological team leaders Feng Yongxi and Zhang, etc. , re-enter the water-rich area for drilling investigation, and according to the geophysical results, conduct drilling investigation at the speed of 6000. Through the verification of drilling hole 10, coal-bearing points such as Datun, Kongzhuang, Yaoqiao (Yangguantun) and Gulong were found, and then Peicheng and Zhangshuanglou were found, and coal-bearing strata were found in Huashan and Shouxianji. The drilling results are basically consistent with the electrical inference, which confirms the existence of rich coalfields. This is another significant progress in the history of coal exploration, Jiangsu after the discovery of Jiulishan coalfield.
1959 comprehensive survey and exploration are carried out, and electrical exploration is divided into Fengxian and Peixian exploration areas. Peixian area was mainly controlled. With the help of drilling, geological structures such as Yaoqiao, Kongzhuang, Zhangshuanglou and Peicheng were preliminarily identified, the coal-bearing range was delineated, and a new mining area was discovered east of Gulong. In September, the Pei County Regional Electricity Law was submitted. 169 team submitted the survey report of Peixian coalfield in June 165438+ 10, which laid the foundation for further exploration.
In order to achieve the submission target of coal reserves 1960 tons in Fengpei coalfield as soon as possible and meet the needs of well construction, the Geological Exploration Management Office of Jiangsu Coal Industry Bureau held two consecutive meetings, and decided to explore Fengpei coalfield, adopting the method of combining general survey, detailed survey and precise survey to the end, and on the basis of general survey, comprehensively entering intensive exploration. Except for Zhangshuanglou minefield, which was explored by the Coalfield Geological Brigade of Jiangsu Geological Bureau, the rest were undertaken by 169 team. 169 team submitted the geological survey report of Kongzhuang mining area in Peixian coalfield for the first time in March 1960, submitted the geological survey report of Peicheng mining area in Peixian coalfield in May, submitted the geological survey report of Yangguantun mining area in Peixian coalfield in June, submitted the geological survey report of Haozhai mining area in Peixian coalfield and submitted the geological survey report of Longguji mining area in Peixian coalfield in June. At the same time, a general survey was conducted in Shilou area to find coal. In order to cooperate with the deepening exploration of 169 team, Li, Zhou, Qian Xiaodong and Wang, technical leaders of Geophysical Exploration Team 3 of Jiangsu Coal Industry Bureau, carried out the general survey and detailed investigation of electrical method in Fengpei coalfield from April to October of 1960, and successively submitted the "Description of Electrical Method Data in Yangguantun Exploration Area of Pei County". Chen, Yan Fengchang, Sun Laishun, Yao, technical leaders of Coal Geology Brigade of Jiangsu Geological Bureau, started exploration in Zhangshuanglou mining area in March 1960, and submitted the preliminary exploration report of Zhangshuanglou mining area in Pei County, Jiangsu Province in June 1962, and obtained 58,200 usable reserves. In order to cooperate with the exploration of coalfield geological brigade, Zhang Sen of No.204 Geophysical Brigade of Jiangsu Geological Bureau increased his rank. 1started electrical prospecting (quadrupole profile method) in Zhangshuanglou mining area in August, 1960. 196 1 year turned to Gulong area for electrical sounding survey. In April, the summary of electrical prospecting work in Zhangshuanglou mining area and Longxian County, Jiangsu Province was submitted successively. 1961-1963, 169 team constructed several supplementary exploration boreholes in Yaoqiao, Kongzhuang and Gulong mining areas. 1March, 964, the team was transferred from Jiangsu Province, and the geological exploration of Fengpei coalfield was completely stopped.
In order to solve the serious shortage of coal supply in Shanghai, in 1970, Shanghai established Datun Coal Mine Engineering Construction Headquarters in Datun, and began to build five mine fields, including Datun, Kongzhuang, Yaoqiao, Gulong and Zhangshuanglou. 1970 ——1973, Shanghai Hydrological Team made several boreholes in Datun, Kongzhuang and Zhangshuanglou minefields. At the end of 1972, the East China Working Group of Coal Development Group of the Ministry of Fuel Chemical Industry organized coalfield geophysical teams from Beijing, Anhui, Jiangxi, Hunan and Jiangsu provinces to conduct seismic exploration battles in Yaoqiao, Datun, Kongzhuang and sanhejian, from which the comprehensive supplementary exploration of abundant coalfields and the general survey of deep and peripheral areas began. 19731-April, Niu Shuchang, Gu Zhimin, Tu, Zhao Jifu, etc. Team 2 of Geophysical Exploration Brigade of Jiangsu Coalfield Geological Exploration Group conducted seismic exploration in Yaoqiao Minefield, and submitted the seismic exploration report in Yaoqiao Minefield of Datun Coal Mine in July. TheNo. 147 coalfield geological exploration team of the Ministry of Fuel Chemical Industry (hereinafter referred to as 147 team) undertook the supplementary exploration task of Datun mining area in June 1973. On the basis of earthquake fighting, the first in-depth investigation of Yaoqiao minefield was carried out, and the geological exploration report of Yaoqiao minefield in Datun mining area was submitted in February 65438. Subsequently, * * * made a detailed survey of Datun Mine Field together with the Geological Brigade of Datun Coal Mine Engineering Construction Command, and submitted the Final Report on Comprehensive Geological Exploration (Detailed Survey) of Datun Mine Field in Datun Mining Area in February of 1974 and 1974 together with Anhui Coalfield Geophysical Survey Team. /kloc-0 started detailed investigation of kongzhuang minefield in may, 974, and/kloc-0 submitted the geological exploration report of kongzhuang minefield in datun mining area, Pei county, Jiangsu province (final draft) in February, 975. After supplementary exploration, the reserves of the above three mine fields are 536 million tons, of which the proven reserves are 565.438+0.6 billion tons and the prospective reserves are 654.38+0.2 billion tons, which has made important contributions to the construction of Datun mining area. At the same time, a general survey was carried out to find coal in Shilou, Yuanlou and Kongzhuangdong areas outside the mining area.
In order to achieve the goal of annual output of raw coal100000 tons during the fourth five-year plan period in Jiangsu Province, Song Wenrui, Li Chongshan, Wang Guozhong, etc. In March of 1973, the 2nd Brigade of Jiangsu Coalfield Geological Exploration Group transferred 7 rigs to Peicheng Minefield, including Zhao Jifu and Liu Huifen. Team 2 of Geophysical Exploration Brigade of Jiangsu Coalfield Geological Exploration Group cooperated with each other to conduct comprehensive supplementary survey. 00000000006 At the same time, a general survey was conducted in Qishan and Dachengzhuang to find coal. 1973 10, Sun Jinheng, Hu Guoliang and Yang Junsheng, technical leaders of the fourth brigade of Jiangsu Coal Geological Exploration Group, were transferred to Fengpei coalfield. With the cooperation of Ma Ziliang, technical director of No.1 Earthquake Team, sanhejian, Shilou and Shouxianji were selected for coal exploration, and all the coal seams of Shanxi Formation were found, which were considered as favorable areas for independent exploration, further expanding the scope of abundant coalfields. 1975 According to the important progress made in coal prospecting in sanhejian and other places, Jiangsu Coalfield Geological Exploration Company established the "Xuhuai Exploration Headquarters" in Xuzhou, with Wei, the head of the company, as the commander and the chief engineer as the deputy commander, and organized the 2nd, 4th and 5th teams of Jiangsu Coalfield Geological Exploration (hereinafter referred to as the 2nd, 4th and 5th teams of Coalfield Geological Exploration) and the geophysical survey team (hereinafter referred to as the Geophysical Exploration Team of Coalfield) to launch a project centered on sanhejian. The exploration ended in July 1976, and the exploration geological report of sanhejian, Jiangsu province (final draft) was submitted, with proven reserves of 654.38+83 million tons and prospective reserves of 88 1 10,000 tons. While fighting in sanhejian, each team still retains some troops to continue the general survey or intensive investigation in Shouxianji, Shilou and other places. In May 1974, the fourth team of coalfield geophysical exploration team and the first team of earthquake conducted a general survey in Shouxianji, and in February 1975, the general survey and exploration report of Shouxianji exploration area in Fengxian County, Jiangsu Province was submitted, with an available reserve of 44.74 million tons. Coalfield No.5 Team, with the cooperation of Earthquake No.2 Team of Coalfield Geophysical Exploration Team, conducted a detailed survey in Shilou area in April 1975, and submitted the Geological Report on Detailed Survey of Shilou Exploration Area in Fengpei Coalfield, Jiangsu Province (final draft) in June 1976, and obtained 44.42 million tons of available reserves. The No.2 Coalfield Team conducted a general survey in Qishan from 1974 to 1975, and learned about the deep coal seam and its structure, which laid the foundation for further general survey.
1in March, 1975, geological exploration brigade of datun coal mine construction engineering headquarters/team Zhou, Sun Wu and seismic team of kloc-0/47 used comprehensive exploration method to conduct supplementary and encrypted exploration of Zhangshuanglou minefield, and submitted the "Pei County, Jiangsu Province" in June, 1976/1.
1June, 1977, the No.2, No.4 and No.5 coalfield teams and the No.2 seismic team of coalfield geophysical team conducted a larger-scale exploration battle in Gulong area of Pei County, concentrating more than 20 drilling rigs, and at the same time went to Gulong and Longdong mine fields for comprehensive exploration. 12 in March, 1978, submitted the geological report of Longdong in Fengpei coalfield. * * * obtained reserves of 586 million tons, of which 576 million tons can be used, which expanded the mining area and provided a foundation for the development and utilization of coal resources under the lake. While fighting, each team still retains some forces to conduct general surveys or intensive investigations in the periphery. In June, 1976, No.4 Coalfield Team began a detailed survey in Xitaotun area between Gulong sanhejian and Yaoqiao. In July, 1977 submitted the Detailed Geological Survey Report of Xitaotun Exploration Area in the periphery of sanhejian, Pei County, Jiangsu Province, and obtained 46.45 million tons of available reserves. 1In July, 1976, a general survey was conducted in the west of Fuxin River, northwest of Huashan Mountain in Fengxian County, and coal was found at the head of hole 15 1 beside Fenghuang Highway, thus Dachengzhuang Coal Mine was discovered, and the coal-bearing area was expanded by about 10 square kilometers. 1in June, 976, a detailed investigation was conducted in Liu Wu Village, west of sanhejian. In July 1977, a detailed geological survey report of Liuwuzhuang exploration area in the periphery of sanhejian was submitted, with proven reserves of 99 million tons and prospective reserves of 55.27 million tons. In order to cooperate with the work of No.4 Geophysical Prospecting Team of Coalfield, No.1 Seismic Team conducted a detailed earthquake investigation in Wuzhuang area from June 1977 to April 65438, and submitted the Report on the Detailed Investigation of Wuzhuang-Shuikengwa Earthquake in Fengpei Coalfield, Jiangsu Province in June. In June 5438+June 5438+1976 10, No.5 Coalfield Team conducted intensive investigation in Yuanlou exploration area in the west of Zhangshuanglou mining area, and submitted the Geological Report on Intensive Investigation of Yuanlou Exploration Area in Jiangsu Province in July 65438+June 0977, and obtained reserves of 52/kloc-0. Zhao Yunlu, Gu Shutang, Shen, Ma Zhaoping and others. Geological Exploration Brigade of Datun Coal Mine Construction Engineering Command adopted the exploration method of combining drilling with earthquake, and conducted general survey and exploration of Kongzhuang and the east (under the lake) extension of Datun coal mine in April 2005 1977 and October 2005 1978 respectively. The second place * * * submitted reserves of 228 million tons, of which the available reserves were 21.800 million tons.
1977 10 Jiangsu Coalfield Geological Exploration Company organized No.4, No.5 and Geophysical Exploration Team to conduct deep exploration of Zhangshuanglou Minefield (including Yuanlou Minefield) by comprehensive exploration method, and submitted the Geological Report on Deep Exploration of Zhangshuanglou Minefield in Fengpei Coalfield of Jiangsu Province on 1978 10. Zhang Daoyu, Chen Zhaocheng and Wu Dexing, technical leaders of No.5 Coalfield Team, on the basis of the general survey of No.2 Coalfield Team 1974- 1975, continued the general survey and exploration of Qishan exploration area and Peicheng mine field, and submitted "Jiangsu Shengfeng" in February 1979. 1978165438+10 month, bag, orchid, etc. General survey and exploration were carried out for the deep part of Datun Minefield, and the Geological Report on Deep Exploration of Datun Minefield in Fengpei Coalfield of Jiangsu Province was submitted in1979+February, which increased the available reserves by 63.07 million tons. Sun Jinheng, Yang Junsheng and Liu Wentao, technical leaders of No.4 Coalfield Team, conducted a general survey and exploration in Dachengzhuang exploration area on 1978, and submitted the Geological Report of General Survey and Exploration in Dachengzhuang Exploration Area in Jiangsu Province 1979+0 1.3 million tons, and obtained the available reserves. Technical leaders Hu Guoliang, Yang Junsheng and Zhao Jinchang. In March of 1979, a general survey was conducted to find coal in Dinglou exploration area in southwest of Shouxian County. In June of 1980, the No.1 Geophysical Exploration Team of Coalfield submitted the Geological Report on General Survey of Dinglou Exploration Area in Fengpei Coalfield, Jiangsu Province, and obtained reserves of1690,000 tons (including available reserves1). The first seismic team of the coalfield geophysical team1982165438+10, compiled the report on seismic investigation and exploration of Fengpei coalfield in Xuzhou, Jiangsu Province, and made a survey of Fengpei coalfield 1974 to198.
From the discovery of coalfield in 1958 to June 1980, the general survey and exploration of Fengpei coalfield were basically completed, and the distribution of coal mines was found out. Most major coal mines in this area have been carefully investigated, and the total amount of drilling work invested is about 870,000 meters. As of 199 1, the accumulated proven reserves are 2.9 billion tons, of which the available reserves are 2.8 billion tons. Seven mine fields have been built and put into operation, with the designed annual output of * * * 6,265,438+10,000 tons, becoming an important coal base in Shanghai and Jiangsu Province. Most undeveloped coal mines are small or deep-buried coal seams, and the degree of exploration is low. There is still hope to increase the deep reserves of some mining areas.
In the process of enriching coal exploration, in order to speed up the exploration, in April, 1960, Jiangsu Coal Industry Bureau held a swearing-in meeting in Peixian work area of 169 team, mobilized to March towards "high, precise and sharp", carried out technological innovation and revolution, actively promoted "three drills" (elevators, pipe pendulums and pipe expanders). 1974- 1976 During the exploration campaign in sanhejian, the 20 1 drilling rig of Coalfield No.2 Team and the 40 1 drilling rig of Coalfield No.4 Team were named as "drilling rigs capable of fighting" by the Ministry of Coal Industry respectively. During the period of 1976- 1978, a single drilling rig in No.4 coalfield of Gulong exploration campaign achieved a good result of drilling1014/m a year and became the first 10,000-meter team. 403 drilling rig set a new record of 2 140.24 meters. In the activities of establishing Daqing-style enterprises, it has also achieved results. 1978, No.5 Coalfield Team was named as the first "Daqing-style enterprise" in Jiangsu coal system by Jiangsu provincial government. In the work, new technology was introduced, technical innovation and transformation were carried out, and technical equipment was updated. Chemical mud, diamond drilling and wireline coring are widely used, and computer processing geophysical exploration results has accelerated the exploration speed. The application of modern sedimentary theory and other coal-based theories has made some achievements in coal prediction and coal survey.
Practice has proved that it is effective to use the comprehensive exploration method of combining geology, drilling and geophysical exploration, especially in electrical sounding, to find and explore the concealed coalfields in the Quaternary large-area coverage area, which provides a reliable basis for drilling coal seams with a buried depth of less than 500 meters. The earthquake law provides a reliable basis for the arrangement of structural holes and reserved lifting holes.
In the early stage of coal exploration, in order to pursue high speed and success, quality was neglected, and most of the boreholes in individual mining areas were not cored; Excessive dilution of exploration grid (generally relaxed once) reduces the requirements for reserve level, and the proportion of advanced reserves is too low; One-sided pursuit of reserves figures, blindly expanding the depth of reserves calculation, the maximum depth of drilling control is about negative 500 meters, while reserves are generally calculated to negative 800 meters, or even negative 1000 meters; At first, the exploration of Taiyuan Formation coal seam was abandoned, and this part of the reserves was later proved to account for 25%-33% of the total reserves. For the above reasons, the geological report cannot be used as the basis of mine design. 1962, all geological reports were downgraded during the review, and then a large number of supplementary projects were put into use and some were re-explored. It took more than 20 years, which not only wasted the project, but also delayed the time of well construction. This is another profound lesson of "haste makes waste".