Jiawang coalfield includes 6 medium-sized minefields and 23 small-sized minefields such as Xia Qiao, Hanqiao, Quantai, Dongzhuang, Qishan and Dahuangshan. The genetic types belong to coastal peat swamp sedimentary briquette field and lake swamp sedimentary coalfield. Coal-bearing strata include Taiyuan Formation of Upper Carboniferous, Shanxi Formation of Lower Permian and Xiashihezi Formation, which are distributed in Jiawang compound syncline. Except for sporadic coal measures exposed at the edge of compound syncline, they are all covered by Quaternary, with a thickness of 5-50 meters, and are basically concealed coalfields. The average total thickness of coal-bearing strata is 372m, the coal-bearing coefficient is 3.35%, the coal seam 15-35, and the total thickness of coal seam is 3.04-21.53m.. The minable and partially minable coal seam has 5- 13 layers, with a total thickness of 2.85- 17.57 meters. Xiashihezi Formation has the best coal-bearing property, with a coal-bearing coefficient of 5.96% and a coal content of 3- 1 1 layer, with a total thickness of 4.43-6.45m.. The main minable coal seam is 1-2 layer, with a thickness of 3.70-5.07 meters, which is medium-thick coal, and the maximum thickness of a single layer is 65438+. Shanxi Formation is poor in coal-bearing property, with a coal-bearing coefficient of 2.05% and 3-7 coal layers, with a total thickness of1.40-4.00m. The main minable coal seam is 1-2, with a thickness of 0.6-2.9m, which belongs to medium-thick layer-thin layer coal. The coal-bearing property of Taiyuan Formation is also poor, with coal-bearing coefficient of 2.63%, coal seam 9- 17, with a total thickness of 3.61-5.30m. The main minable coal seam is 1-3, with a thickness of1-2m, which is dominated by thin coal. The coal seam is dominated by gelatinous substances, and the silk carbon substances in some sections of Shanxi Formation coal seam alone account for more than 50%. Microscopic coal and rock types are bright dark coal to bright coal. Coal is mainly gas coal, followed by fat coal, and a small amount of lean coal, anthracite and lean coal. Raw coal analysis contains: moisture 1%-3%, ash 7.6%-25%, volatile 30%-47.96%, calorific value 6400-8500 calories/g (1 calorie =4. 1868 joules), and clean coal contains. Xiashihezi Formation contains medium-high ash and low sulfur coal, Shanxi Formation contains medium-high ash and low sulfur coal, and Taiyuan Formation contains low ash and high sulfur coal. Coal and rock have good washability and are easy to prepare. It can be used as excellent power coal and coking coal blending.
Jiawang coalfield was discovered in Guangxu six years (1880). According to the Records of Xuzhou Mining History, local farmers Zhou Mian and others found exposed coal seams washed by floods in the north of Jiawang, that is, exposed coal was mined in Wangzhuang and Sun Jialin. The Westernization Movement in the late Qing Dynasty promoted the development of capitalism in China and increased the demand for coal. Zuo et al. put forward the opinion of developing Xuzhou coal to the Qing court, which meant "making Jingzhou Daocheng make a clear survey of Xuzhou coal and iron, and sending personnel to hold it". In the eighth year of Guangxu (1882), Cheng Jingzhi invited Nanjing magistrate candidate Hu Enxie to organize mining in Xuzhou. Hu Enxie and his friend Wu Zhishi invited Xibar, a western miner, to inspect the coal seedlings and found that Tongshan County was extremely rich in coal seedlings. In the same year, the Bureau was formally established, and two wells were dug in front of Caishan, Guo Li. In the ninth year of Guangxu (1883), the water was too big and stopped halfway. Later, his son Hu Bizheng generated new shares and bought an earth well opened by local residents in Qingshan Spring, which did not penetrate the coal seam. He continued to dig and met the coal seam. He stopped work again because of the poor coal quality. Later, Wu Weixiong opened four wells in Jiawang to mine the upper coal of Xiashihezi Formation, thus opening the development history of Xuzhou coal mine. In the 24th year of Guangxu (1898), Hu must recruit new shares and set up Jiawang Coal Mine Co., Ltd., with a daily output of 40-50 tons of coal. 19 12 years, Hu Zhubi transferred the mining right to Yuan Shichuan (the seventh brother of Yuan Shikai), renamed Jiawang Coal Mine Company, and increased capital to drill large wells, some of which were produced by machinery. The well depth was 85.4- 1 10 meters, with one miner Liu Xun and one miner/kloc-. 1917-1921year, coal production is the most prosperous, with a daily output of 500-600 tons. After several ups and downs, 1933, Huadong Coal Mine Co., Ltd. set up a new factory in Xiaqiao, and newly opened No.1 and No.2 wells. The designed annual production capacity is 450,000 tons, 1934 is officially put into production, and the annual coal production is 250,000-400,000 tons. So far, Jiawang Coal Mine has a certain scale. 1938, Japanese invaders invaded Jiawang, renamed it Liu Quan Charcoal Mine, and plundered it. The maximum daily output is 2,000 tons, and there are more than 3,200 miners. The annual coal output is about 220,000-280,000 tons. 1945, the army of the Republic of China took over Jiawang Coal Mine. 1946, the former East China Coal Mine Co., Ltd. recovered the mining right. 1947, Xinqiao mine started construction. By 1948, the annual output of Jiawang Coal Mine will reach 560,000 tons, which is quite large.
The geological survey of Jiawang Coal Mine started at 19 17. At that time, Zhao Rujun and Liu were appointed by the Geological Survey of the Ministry of Agriculture and Commerce to investigate Jiawang Coal Mine, drew the geological map of 1∶65438+ million Jiawang coalfield, made a comprehensive investigation on the strata, structure and coal seam occurrence characteristics, and wrote the Special Report on Mineral Investigation in Xiaoxian County, Tongshan County, Jiangsu Province, which considered that the characteristics of coal-bearing strata and coal seams were roughly the same as those of Zexian coalfield in Shandong Province, and calculated. Since then, the prelude of geological survey in Jiawang coalfield has been opened, and the subsequent mine development has progressed smoothly. 193 1 year, Professor Xie visited Jiawang Coal Mine twice at the invitation of East China Coal Mine Co., Ltd., made geological maps and profiles with the topographic map of1∶ 50,000 as the base map, arranged drilling holes and wrote the Geological Report of Jiawang Coalfield in Tongshan County, Jiangsu Province. The drilling results are divided into three parts according to depth and thickness for the first time. 1933, Xia Qiao Mine was built and Hanqiao New District was discovered.
In order to plunder more coal in Jiawang, the Japanese aggressors also conducted some geological surveys and explorations. 194 1 year, Nishikawa Hiroyuki, a technician from Japan Xingya Institute, conducted geological exploration in Jiawang for the first time, and wrote the Investigation Report on Seismic Exploration in Tan Tian, Liu Quan, Tongshan County, Jiangsu Province. During the period of 1942- 1945, the Geological Survey Bureau of Kitchener Co., Ltd. conducted geological survey and drilling in Jiawang Coal Mine, and produced1:10000 geological map, isobath and contour map of coal seam, and compiled the Geological Survey Report of Liu Quan Carboniferous Field in Huaihai Province.
During the period of 1947, Yang of the Institute of Mining and Metallurgy and Bai Jiaju of the Central Geological Survey investigated Jiawang Coal Mine (East China Coal Mine) and wrote the Investigation Report of East China Coal Mine in Tongshan County, Jiangsu Province, pointing out that there may be coal in a plain southwest of Tuntou, and Dahuangshan and other places should conduct a detailed investigation. In the same year, Xie Ye, the Mineral Exploration Department of the Resources Committee, conducted a geological survey in Jiawang Coalfield and wrote The Recent Situation of Jiawang Coalfield and East China Coal Mine in Jiangsu Province, comprehensively and systematically summarized the previous mine and drilling data, arranged a number of new boreholes, re-estimated the reserves, and pointed out that Xiaohu System (Shanxi Formation) may be a major exploration target in the future and the possibility of Panjiaan, Dahuangshan and other coal-bearing areas, which made Jiawang Coal Mine show a broad prospect.
1948165438+1On October 23rd, Chai Huazhou, director of the Mining Bureau of the Ministry of Industry and Mining of East China Finance, went to Jiawang to take over East China Coal Mine Company and appointed Xu Shi as the manager. In order to resume production, old rigs were collected for construction and production drilling. 1June, 950, Jiawang Coal Mine was formally planned by the Central Ministry of Fuel Chemical Industry and Shandong Mining Bureau (Xuzhou was under the jurisdiction of Shandong Province at that time), and experts were hired to conduct geological investigation and coal prediction. 1952, Liu Zhiyuan, an engineer of Jiawang Coalfield Geological Survey Team of Nanjing Office of the Ministry of Geology (Nanjing Office of China Geological Planning Steering Committee), and Sheng conducted a 1∶5000 topographic and geological survey in the south of Jiawang Coalfield (from Panjiaan to Dahuangshan), and submitted the Investigation Report of Jiawang Coalfield in Xuzhou, Jiangsu. This report systematically discusses the stratum and structure of Jiawang coalfield, divides Mazhuang, Wu Jia, Zhangzhuang and Li Po into four coal-prospecting areas, and arranges coal-prospecting boreholes to guide the drilling rig of Jiawang coalmine to find the small lake system (Shanxi Formation) coal seam. 1In July, 953, the Geological Department and Drilling Team of Jiawang Mining Bureau of East China Mining Bureau were established, with Lu as the captain and Gu Shengqi as the engineer. With drilling as the main means and mountain engineering as the auxiliary means, the exploration of Xia Qiao and Hanqiao coal mines and the coal prospecting in Panjiaan and Dahuangshan new areas have been carried out in an all-round way. From June of 1953 to February of 13, the general survey and exploration were first carried out in Xia Qiao mining area, and at the same time, according to the boreholes arranged by Liu Zhiyuan, two boreholes were constructed in Panjiaan mining area, and coal measures strata were found. Five boreholes were drilled in Xinqiao mining area and five layers of coal were found. Two boreholes were drilled in Dahuangshan mining area, and two layers of Tuntou System (Taiyuan Formation) and Xiaohu System (Shanxi Formation) were discovered, thus confirming that these areas are new coal-bearing areas and expanding the scope of Jiawang coalfield. 1954 1 month, and the focus was transferred to Hanqiao mining area for general survey and exploration. 1February, 954, geological data report of Xia Qiao was submitted. In August, Jiawang Coal Mine Drilling Team merged with Geology Department of Mining Bureau, and was renamed Jiawang Coalfield Geological Exploration Team of East China Coalfield Geological Exploration Bureau, with Wang Guodong as an engineer. The team submitted the geological report of Hanqiao mining area. This is the first batch of geological reports submitted in accordance with the requirements of unified specifications after the founding of the People's Republic of China. * * * has obtained 57.84 million tons of usable reserves, greatly expanded the scale of Jiawang Coal Mine, and found that Qingshan Spring in the adjacent area is a very promising area. 1954,65438+10, Gu Shengqi, Sun Shaogeng, Liu Haifeng, etc. The detailed investigation of the eastern and western parts of Dahuangshan mining area was carried out by drilling, and the detailed investigation of Qingshanquan mining area began in April. The geological data report of Qingshanquan mining area in Jiawang coalfield was submitted in May 1955 and published in East China in February 12. /team kloc-0/24) submitted the geological data and geological report of Dahuangshan mining area in Jiawang coalfield, and * * * obtained the available reserves of 65.438+0.24 billion tons, expanding the scale of Jiawang coalfield. During the exploration in Dahuangshan mining area, Soviet expert Ilyasenko arrived at Jiawang Mining Bureau in March 1955 to give guidance, and put forward specific opinions on exploration methods and engineering layout, which played an important role in the normalization of exploration work.
In order to improve the reserve level, since April 1955, 124 team has carried out supplementary exploration in Xia Qiao and Hanqiao, and started geological exploration in Xinqiao Mine in June. /kloc-In February, the Supplementary Geological Exploration Report of Geological Data of Xiaqiao Mine in Jiawang Coalfield and the Geological Exploration Report of Xinqiao Mining Area in Jiawang Coalfield were submitted. During the supplementary exploration, a preliminary investigation was carried out in Panjiaan area with a hand drill. In June 5438+ 10 of the same year, the eastern part of Dahuangshan mining area entered the stage of fine investigation, and in March 1956, the geological report of Dahuangshan mining area in Jiawang coalfield was submitted. Through the exploration and supplementary exploration of the above mining areas, the available reserves have increased by more than 30 million tons. In order to provide the Huaihe River Management Committee with information on whether the Bulao River is under pressure, the bedrock of three sections was exposed by hand drilling in Huli mining area, which confirmed the existence of coal measures strata in this area.
195565438+February, 124 team set up a census team. In June1956+1October, Fan Guiting and Wu were sent to the area for geological survey and submitted the regional geological survey report. From the analysis of the structure and coal-bearing strata in this area, it is inferred that there should be coal seams in Sanbao area. Later, Dong Yulin, Li, Wen Shuhua, Tang Chaoxin and Ai were sent to the periphery of Jiawang coalfield for a general survey of coal prospecting. It is found that Qiligou and Sanbao in the southwest of Dahuangshan mining area belong to the southwest extension of Jiawang compound syncline, which is very likely to preserve coal-bearing syncline. Then shallow drilling was deployed to verify that Taiyuan Formation coal seam was found in Qiligou, so Qiligou was determined as a promising coal-bearing area, and detailed investigation was continued in this area.
After the exploration of Qingshan Spring and Dahuangshan mining areas, in June, 1956, Sun Shaogeng, Guo, Li Maodian, etc. 124 team conducted a comprehensive survey and exploration of Panjiaan area by drilling, and the geological exploration of Jiawang coalfield entered the second climax. 1March, 957, geological report of Panjiaan mining area in Jiawang coalfield was submitted. Subsequently, the exploration of Panjiaan was divided into three mining areas: Quantai, Huli and Dongzhuang, and a thorough and detailed investigation was carried out. In July of the same year, Xuzhou Office of East China Coalfield Geological Exploration Bureau submitted the Detailed Geological Survey Report of Huli Mining Area in Xuzhou Coalfield,1September 1957,1March 1958, and submitted the Detailed Geological Survey Report of Quantai Mining Area in Xuzhou Coalfield. * * * Obtained reserves of 65.438+0.28 billion tons, including available reserves of 654.38+0.654.38+0.20 billion tons, and the scale of Jiawang coalfield was further expanded.
In order to achieve the goal of annual output of raw coal 1 100 million tons during the fourth five-year plan period in Jiangsu Province, the geological exploration team of Xuzhou Mining Bureau conducted a general survey and exploration of the deep and periphery of the mining area. In March 1970, exploration began in Dalizhuang section, and in September, deep and intensive investigation began in Panjiaan mining area. In June165438+1October, the exploration geological report of Dalizhuang in Jiawang Coalfield was submitted, with proven reserves of 7.54 million tons, including recoverable reserves of 54 1 10,000 tons. 1974 and 10 in June, the geological report of Panjiaan exploration area in Xuzhou coalfield was submitted. The proven reserves were1900,000 tons and the prospective reserves were 41900,000 tons, which expanded the coalfield scale again. 1In July, 1973, the exploration team of Xuzhou Small Coal Mine Command conducted drilling survey in Sanbao area.1In May, 1975, the geological report of Sanbao survey in Tongshan County, Jiangsu Province was submitted, and the reserves were 2.35 million tons, of which the available reserves were/kloc-0.07 million tons.
The general survey and exploration of Jiawang coalfield has been put into drilling about 200,000 meters, with 40,000 cubic meters of exploration slots, and the total area of geological survey and hydrogeological survey is about 900 square kilometers. By the end of 199 1, the accumulated proven reserves were 598 million tons, of which 590 million tons were available. At this point, there is little hope to continue to expand the prospective reserves of Jiawang coalfield. Except for two small coal mines in Qiligou and Sanbao, which are difficult to use in the near future, all the proven coal mines have been developed and utilized. 27 large and small coal mines have been built, with a total designed annual mining capacity of about 5.5 million tons, and the exploited amount (including losses) accounts for about 39% of the accumulated proven reserves.
After the discovery of Jiawang Coalfield to the development and exploration in 1960 80 years, especially after the establishment of New China 10 years, the first coal industrial base in Jiangsu Province was built on a barren land, which made great contributions to the industrial rise and development of Jiangsu Province and Shanghai, and also promoted the rise and development of a number of local industrial and mining enterprises. Now Jiawang is a region full of high-rise buildings, highway network, developed industry and prosperous economy. The original Jiawang Village has now developed into a town with a certain scale.
Electrical logging was used in the general survey and exploration of Jiawang coalfield. Practice has proved that the position and thickness of coal seam can be accurately determined by electric logging, which makes up for the defect of leaking thin coal seam by drilling.
In the process of general survey and exploration, the instructions of superiors change frequently, and the exploration work pays attention to short-term benefits, but fails to consider long-term goals. The drilling quality is poor, and the leakage of thin coal seam is serious. The above reasons lead to repeated revision of the design and supplementary exploration, which not only wastes the engineering quantity, but also delays the construction speed.