共查询到20条相似文献,搜索用时 15 毫秒
1.
M. Bukowska 《Journal of Mining Science》2012,48(3):445-456
Coal mining realised in Upper Silesian Coal Basin is the main course of occurrence of bumps and rock-bumps. Geodynamical phenomena described as the rock-bumps occur in the area of GZW from the end of the 19th century. The mechanism of the rock-bumps phenomenon, due to the complexity, didn??t allow elaborating the completely effective method of its forecasting. However, increasing amount and the scale of rock-bumps, due to the development of mining, have extorted the scientific circles to perform works devoted to the elaborating newer and newer and better and better methods of the assessment of liability to rock-bumps, likewise methods of rock-bumps hazard assessment. 相似文献
2.
Andrzej Rozkowski Anna Chmura Bogumil Gajowiec Jadwiga Wagner 《Mine Water and the Environment》1993,12(1):95-105
The Upper Silesian Coal Basin (USCB), 7500 sq.km area (including 5500 sq.km in Poland), is situated in the Variscian Upper Silesian intermountain depression. Coal-bearing Upper Carboniferous rocks occur beneath the permeable Mesozoic and Quarternary sediments in the NE part of the USCB and the impermeable Tertiary clay series in the southern and north—western parts. Studies on hydrogeochemical environment showed a normal vertical and horizontal hydrogeochemical zone in the full extent of the basin. This zone is characterized by changes in mineralization and chemical of waters along circulation routes. Strongly mineralized waters of isolated structures represent brines of the type Cl?Na and specially Cl?Na?Ca. A general trend of increased mineralization is noted along with depth of occurrence of water independently of age of the strata. The general regularity is disturbed by the phenomena of hydrochemical inversion mainly due to the mining activity. In the USCB coal deposits have began to be intensively exploited as early as the 18th century. The coal seams are exploited by the underground mining method, mainly by the longwall system, down to the average depth from 650 m to 1200 m. The steadily increasing mining depth and the opening of new mining levels increase the extent of drainage by mines and amounts as well as salinity of pumped out water. The total quantity of water pumped out of mines equals 724 m3/min. Area of decreased piezometric heads, because of the mine drainage, covers about 2000 sq.km. As the coal mine workings are carried out in different hydrochemical zones, the chemistry of the pumped mine waters vary significantly, with the mineralization of natural mine water ranging from 0.2 to 372.0 g/dm3. The artificial hydraulic interconnections created by mining activities and deep drainage cause changes in the natural hydrochemical regime of groundwater. The desalination effect caused by mining activity depends mainly on the depth and size of mining, duration of exploitation, drainage activity and geological conditions of the USCB. The present hydrochemical zone in the USCB determined by the mining impact is shown on the maps of groundwater mineralization at the depth of 500 and 750 m, as well as on the map of the depth of the occurrence of saline waters (35 g/dm3). There is a close correlation between mineralization of water in the Carboniferous within the coal fields and the type of overlying rocks as well as degree in which the rock mass is affected by mine workings. The maximum salinity of water was found in depressional structures under the cover of sealing. Tertiary rocks, host structure not covered by the Tertiary and affected by mine workings for over a hundred years are characterized by a marked desalination of waters to the depth of about 500 m. 相似文献
3.
Mine Water and the Environment - The Main Key Heritage Adit in Zabrze was used during from 1799 to 1953 to drain a series of underground coal mines and is the longest such facility in Europe. It... 相似文献
4.
Przemysław Bukowski 《Mine Water and the Environment》2011,30(4):302-311
Since 1976, there have been six inrushes of water into shaft mine workings in the Upper Silesian Coal Basin in Poland, with
two of the more serious events occurring during the last 3 years. A safety assessment was conducted, considering inflow intensity,
the amount of suspended material contained in the water flowing into the shaft, the proportion of water-bearing formations
in the vertical profile, the condition of the shaft lining and safety pillar, and the history of the shaft. A risk assessment
system is proposed to classify mine shafts with respect to the risk of a water hazard occurring, based on these factors. Each
of the risk factors was assigned a weight, based on their relative significance, and then a method of evaluating each of these
factors was developed. The proposed approach may be the basis for a more detailed, expert system for timely assessment of
water hazard risk analysis. It may also be possible to adapt it to different geological and mining conditions. 相似文献
5.
The probability of rockburst occurrence in the Upper Silesian Coal Basin area dependent on natural mining conditions 总被引:2,自引:0,他引:2
M. Bukowska 《Journal of Mining Science》2006,42(6):570-577
The presented assessment system of the rockburst occurrence probability and of the state of rockburst hazard takes into account
the natural conditions of mining operations over the Upper Silesian Coal Basin area. The principal assessment factors governing
the rockburst occurrence probability and the state of rockburst hazard, which have been included in the author’s system, are
as follows: depth of coal seam, rock mass structure, geomechanical properties of rocks, energetic properties of rocks, coal
seam thickness, distance between a coal seam and a potential seismogenic layer, maximum seismic energy of tremors from a given
coal seam. The following four classes of rockburst hazard have been distinguished: no hazard, low hazard, moderate hazard,
high hazard.
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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 55–62, November–December, 2006. 相似文献
6.
Mechanical Properties of Carboniferous Rocks in the Upper Silesian Coal Basin under Uniaxial and Triaxial Compression Tests 总被引:1,自引:0,他引:1
M. Bukowska 《Journal of Mining Science》2005,41(2):129-133
Many years' studies of geological properties or rocks from the Upper Silesian Coal Basin have resulted in acquisition of a
substantial data base of mechanical parameters or rocks over the total strain range. It is found that the post-peak rock properties
are closely related with the peak strength and the pre-peak properties. The relationship between the uniaxial ultimate strength,
elastic modulus, and drop modulus are determined.
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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 44–48, March–April, 2005. 相似文献
7.
Using the DRASTIC System to Assess the Vulnerability of Ground Water to Pollution in Mined Areas of the Upper Silesian Coal Basin 总被引:2,自引:1,他引:1
Abstract An attempt was made to use the U.S. EPA DRASTIC ranking system to assess the vulnerability of ground water in the Upper Silesian
Coal Basin. Analysis of the various system components indicate that several DRASTIC factors would have to be modified to consider
the effects of mining, subsidence, and ground water rebound. 相似文献
8.
Lucyna Lewiska-Preis Ewa Szram Monika J.Fabiaska dám Nádudvari Magdalena Misz-Kennan Anna Abramowicz ukasz Kruszewski Andrzej Kita 《国际煤炭科学技术学报(英文)》2021,8(4):790-814
Many temporary and permanent reservoirs of water occur on or near coal-waste dumps in the Lower-and Upper Silesian Coal Basins (Poland).Little or nothing is kno... 相似文献
9.
为了科学评价永红煤矿下组煤受奥灰水威胁的程度,分析研究峰峰组上部岩层的隔水性能,永红煤矿采用了水文地质钻探、抽水试验、压水试验、水化学特征分析等多种技术手段,对井田内峰峰组上部的隔水性能进行了分析和研究。得出了峰峰组上部35m以内具有一定的隔水性能,可视为相对隔水层。 相似文献
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12.
Santiago Jardón Almudena Ordóñez Rodrigo Álvarez Pablo Cienfuegos Jorge Loredo 《Mine Water and the Environment》2013,32(2):139-151
The Asturian Central Coal Basin (NW Spain) is generally characterized by moderately porous and permeable rocks, such as sandstone, limestone, and shale. Groundwater mostly flows through open fractures, voids, and decompression zones associated with coal mining. Exploitation of water resources in former coal mines could contribute to the economic well-being of communities affected by closure. The potential value of mine water associated with the flooded Barredo and Figaredo mine shafts near the town of Mieres was studied. This reservoir could supply water for 60,000 people; this could possibly be doubled by co-managing the river flow and underground resources. We studied the potential recovery of energy from the thermal value of this mine water (using water-to-water heat pumps). Two district heating systems are proposed: a low-temperature network (35 °C) for domestic heating and a very-low temperature network (20 °C) for large users, such as shopping centres, that need both heating and cooling. Return flow to the reservoir can generate electricity by means of micro-turbines. Preliminary estimates of profitability appear favourable, along with a sizable reduction in CO2 emissions compared to natural gas heating. Extrapolation of these results to other mine water reservoirs in Central Asturias implies a potential of 40 million m3 per year for water supply, and an energy supply capacity close to 260,000 thermal MWh per year. 相似文献
13.
Przemysław Bukowski 《Journal of Mining Science》2010,46(3):298-310
Against a background of hydrodynamic conditions connected with abandoning of significant number of mines and vast water reservoirs
forming within them, basic methods of the assessment of strength of safety pillars used in coal mines in the USCB are presented.
In the light of geomechanical research and conditions in mines in the USCB, the paper indicates a possibility of verification
of safety pillar dimensions. On the example of one of mines in the USCB conditions for safety pillars stability in complicated
mining conditions are assessed. The author also proposes a methodology of attempt and safety zones indication for existing
safety pillars which would simultaneously be safety zones for designed exploitation. 相似文献
14.
Mine Water and the Environment - Coal mine drainage (CMD) reuse is an important method for optimizing water resource supply in arid/semi-arid regions. This study analyzed the spatial distribution... 相似文献
15.
邹庄煤矿为宿县矿区新建矿井,32煤层为即将开采煤层,72煤层为下一开采煤层。72煤层受岩浆岩侵蚀严重,且埋深较32煤层深,因此72煤层的瓦斯赋存情况更加复杂。文章系统分析影响瓦斯赋存的因素,采用灰色关联方法,对影响72煤层瓦斯含量的各个因素进行研究,建立了灰色关联模型,并计算出了各项因素的关联度。研究结果表明:影响邹庄煤矿72煤层瓦斯赋存的主要因素为煤的灰分、煤层埋藏深度、地层厚度、挥发分、煤厚与地层厚度比等,利用多元回归的分析方法对邹庄煤矿72煤层的瓦斯含量进行预测,并为其以后的安全开采提供前瞻性预测数据。 相似文献
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双柳煤矿4号煤层存在底板太灰水带压开采问题,文中在概述井田内太灰水贮存特征的基础上,分别利用突水系数法和多层叠加抗压强度比值系数法进行了太灰水对4号煤层突水危险性评价,最后叠置二者评价结果做出了综合评价.以期为煤矿防治水工作提供参考依据. 相似文献
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怡泽煤矿煤与瓦斯突出异常现象浅析 总被引:1,自引:0,他引:1
根据怡泽煤矿突出煤层储存状况、构造分布、瓦斯及其压力特征分析,研究该矿煤与瓦斯突出的发生机理,为防治煤与瓦斯突出灾害提供科学依据。 相似文献
20.
介绍了大柳塔煤矿的质量标准化的进展情况并介绍了矿井质量标准化的基本知识,最后提出了提高质量标准化的措施,对矿井顺利的进行质量标准化管理有一定的借鉴意义。 相似文献