- WANG Bing- shan,YU Ji- feng (Geo- science College of Shandong University of Science and Technology,Taian2 710 19,China) SUN Yu- zhuang,L I Ming- yue (Hebei Institute of Architectural Science and Technology,Handan0 5 60 38China)
Based on analysis of coal petrological and petrographical properties of Coal Seam 1and Oil Shale Seam 1from Huangxian Tertiary brown coal and oil shale bearing basin,it is indicates that,coal seam 1was formed in a forest swamp with fairly deep water;oil shale Seam 1in a lake swamp,and the sea transgression controlled the fluctuation of the water level,further affecting the evolution and alternation of plant groups within swamps.
2001 05 [Abstract][OnlineView][Download 265K] - WANG Xin- yi1,2 ,NIE Xin- liang3,ZHAO Wei- dong1 (1.Department of Resource and Environmental Engineer,Jiaozuo Institute of Technology,Jiaozuo 4 5 4 15 9,China;2 .Institute of Environmental Science,Beijing Normal University,Beijing10 0 875 ,China; 3.Wat
Based on the information collected from 40 geothermal wells,it is researched that the distribution characteristics of geothermal temperature,gradient and surface therm al current value in Kaifeng Depression.Com bined with the study of regularities of geological structure and groundwater′s movement it is demonstrated that the controlling factors of geothermal distribution and formatting mechanism thermal system .
2001 05 [Abstract][OnlineView][Download 337K] - MENG Zhao- ping,PENG Su- ping,CAO Dai- yong,ZHANG Shou- ren (China University of Mining and Technology,Beijing10 0 0 83,China)
Using the theory of finite deform ation m echanics,a displacement function of the gas and oil reservoir deformation is established,and a new method recovering the confiquration before deformation of reservoir is proposed.Strain- Rotation decomposition has been made in the geological structural deformation.Adopting the gradient of mean rotation angle(θ) as the basic characteristic quantity,finite deformation rotation fields in Daqing tract of Talimu basin are studied.By the thinking that the local rotation or the discord rotation of the media will induce fractures,we forecast the fracture favorable regions of the Carbonate rock reservoir and satisfied results are gained.
2001 05 [Abstract][OnlineView][Download 349K] - DU Gang1,CHE Yao2 ,HU Bao- lin2 ,SUN Jing- min2 (1.Technical School of Coal Industry,Inner- Mongolia,Tongliao0 2 80 2 1,China; 2 .China University of Geoscience,Beijing 10 0 0 83,China)
Baolongshan coalfield is taken as an exam ple to dissertate the method and reason of finding coal under red- beds from Songliao basin.Based on the data of seismic and drilling prospecting,forming mechanism of the basin,character and evolution of the basin m argin fault,the time and space variation of coal accumulation,allocation of sedimentary environment and facies,and coaly coefficient are discussed systematically.The research indicates that the tracing contrast of seismic cross- section,the continuity and super- coverage relationship of isochronous interface and its morphological change,and the internal structure of reflecting wave,are especially helpful to determine the framework of strata,to analyza the formation and development of fault depression,to discuss the filling evolution process and its control action.Based on the above study,the western slope of Songliao basin,including several sub- basins such as Daolaodu- Gaoliban,Zhenlai- Xinglongshan,Juliuhe,Zhanyu,and Xiboyinzi- Baolongshan,is speculated to be an important exploration targetarea of coal resources.
2001 05 [Abstract][OnlineView][Download 186K] - XU Jin,JING Yi- wu (Integrated Exploration Team ,Xinjiang Coalfield Geologic Administration,Wulumuqi 830 0 0 9,China)
The sulfur occurrence,content and genetic feature in the main coal seams,Buya Coal Mine,are analyzed with the macroanalysis,microanalysis and coal chemical m ethods.Some practical desulfurization methods are presented,which m ust be useful for coal cleaning.
2001 05 [Abstract][OnlineView][Download 266K] - LIAN Fa- xian (Xinji Coal Mine of Xingji Energy Inc.,Huainan2 32 171,China)
The method of“geometric- transillumination”was used to quantitatively predict the fault in working face.Based on the method of elevation- difference figure,it is further discussed that the principle and method to make it perfectand more available. The method of data treatment and applied instance are provided.
2001 05 [Abstract][OnlineView][Download 314K] - FU Guo- qing (Hebi Coal Mining Company,Hebi4 5 80 0 0 ,China)
It is analyzed that the geological conditions fitted for combined mechanical caving and enlargem ent of usage scale,and put forward the study direction and contents.
2001 05 [Abstract][OnlineView][Download 217K] - TANG You- yi (Jiaozuo Institute of Technology,Jiaozuo4 5 4 0 0 0 ,China)
According to the field survey data of the gas contentin the m ining areas and the qualitative analysis of gas content,the prediction formula of gas content in coal seam s,which can be used for unmining areas,has been obtained by certain method with a variety of drilling data.The authors intend to predictthe gas content in coal seams of the coal field and provide a constructive proposal for gas content prediction in coal seams of the large- sized coal mines.
2001 05 [Abstract][OnlineView][Download 282K] - CUI Yong- jun,YANG Xi- lu (Xian Branch,CCRI,Xi′an 710 0 5 4 China)
Based on the theory and method of volume correction for methane isothermal adsorption test,the volume correction form ulation of multi- component gas adsorption is presented.In addition,the density of absorbed phase of multi- component is discussed and calculated.Through the example,it is shown that the relative error of adsorbed gas content of multi- component is lower than that of methane.
2001 05 [Abstract][OnlineView][Download 122K] - ZHAO Zhi- gen,TANG Xiu- yi (Huainan Institute of Technology,Huainan,2 32 0 0 1,China)
L ow- temperature nitrogen adsorption method(L INAM) is used to detect the micropores of2 6 coal sam ples,and the experimental results are analysed in this paper.The detectable minimal pore by L INAM is 0 .6 nm in diam eter,which benefits the research on micropore in coal.The pore between0 .6 and10 nm in diameter is with more specific surface area than the pore between 10 and 10 0 nm in diameter,so the former plays a more important role than the latter.More attention should be paid to the absorbed methane,and the contents of free methane and adsorbed methane are fewer than the contents usually understood.
2001 05 [Abstract][OnlineView][Download 133K] - LI Jian- wu,ZHANG Pei- he (Xian Branch,CCRI,Xi′an710 0 5 4 ,China)
The CBM resource in Shaanxi Province is evaluated as 2 5 6 2 4× 10 8m3at shallower than 2 0 0 0 m .The com prehensive study,covering five coal fields,includes coal reservoir distribution,gas content,coal seam permeability,coal ranks and adsorption properties,in conjunction with resource calculation.It is considered that the potential of CBM developm ent in Shaanxi is very large,especially in Permio- Carbon coal fields in Weibei area and Northern Shaanxi.The Hancheng mining area is an optimum target area for development.
2001 05 [Abstract][OnlineView][Download 123K] - WANG Hong- yan,ZHANG Jian- bo,L IU Hong- lin (L angfang Branch,RIPED,Langfang 0 65 0 67,China) QIN Yong (China University of Mining Technology,Xuzhou10 0 83,China)
Hydrogeologic condition is important for the high yield and enrichment of coalbed methane.Hydrogeologic unit in the southern Qinshui basin consists of lots of hydrogeologic subunits.Underground drainage divide results the gas- water yield performance complexity in coalbed methane wells.The northern interval of Jin- huo fracture fold belt on eastern boundary blocks the water in water- bearing beds in middle Ordovician formation horizontally,radial flow condition and water conductivity of underground water in southern interval is extrem ely poor.The water blocking property in middle interval of southern boundary is profitable for the preservation and enrichmentof coalbed methane in Jincheng.Western boundary is Anze,whose northern part is a water blockage boundary,southern part is water conducting fault.There are four important hydrogolgic boundaries in this area,in which Sitou fracture is a closed fracture whose water conductivity and gas conductivity is exceedingly poor.Underground water in terms of hydrostatic pressure encloses the coalbed methand in coalbed in Daning- Panzhuang- Fanzhuang district.It is profitable for the preservation and enrichment of coalbed methane that radial flow strength of underground water is probably weak in Zhengzhuang and nearby area of western Sitou fracture area.The enrichment condition of coalbed methane is good in Daning- Panzhuang- Fanzhuang district whose equipotential surface belongs to pothole stagnantpattern.
2001 05 [Abstract][OnlineView][Download 173K] - WANG Yi- min (South China U niversity of Technology,Guangzhou 5 10 640 ,China) WANG Liang- qi (The Second Ocean Exploring Company of Guangzhou,Guangzhou5 10 760 ,China)
According to the current situation and the developing tendency of highway subgrade slope protecting,this paper introduces m any kinds of method of plant protecting in highway subgrade slope,and points out several problems which are needed to be researched and solved further.
2001 05 [Abstract][OnlineView][Download 326K] - L U Meng- sheng,WU En- jiang,L I Ming- jian (Shandong Research Institute of Coal Geology & Engineering Prospection,Tai′an 2 710 0 0 ,China)
In most region of southwest of Shandong province,the content of fluorine in shallow- bed groundwater is high.The maximum content is 6 .0 7mg/ L .According to data derived from the hydrogeochemical survey of the shallow- bed groundwater in Juye,Yuncheng,Jiaxiang during the exploration of Juye coalfield,taking into accountthe factors of topography,geomorphology, climate,lithology,the hydrogeochemical characteristic and the mechanism of genesis of the high fluorine shallow- bed groundwater was studied.It was pointed out that the enrichment of fluorine in shallow- bed groundwater have a close relation with p H,salinity and concentration of HCO3- ,Ca2 + ,Mg2 + ,and the com ponent concentration of Ca,Mg,F and the saturation index of som e solid phases,such as Calcite,Aragonite,Anhydrite,Fluorite.The precaution and harnessing measure were put forward.
2001 05 [Abstract][OnlineView][Download 355K] - CHENG Chun- qi,ZHANG Dan (Huainan Institute of Technology,Huainan 2 32 0 0 1,China) ZHENG Gao- sheng (National Investigating Xinji Coal and Energy LTD.,Huainan 2 32 0 2 4 ,China)
A correct quantitative estimation of the influence of suspensoid colmatage upon the seeping progress of suspensions in the m edia is helpful for the reasonable designation of injection technolgy and for controlling the injecting process. The mathematical model describing the colmatage and its influence on seeping behavior of suspensions consists of the three differential equations presented in this paper:transportation equation of suspensoids,kinetic sedim entation equation of suspensoids and flow equation of suspension.The theoretical solution of one- dim ensional model for suspensions flowing in porous media resulted by finite difference method respectively at constant flow discharge and constant boundary pressure difference demonstrated thatdue to colmatage the flowing state of suspensions is always unsteady,and with the change of seeping time the hydraulic gradient increases gradually at constant discharge conditions or the discharge rate decreases gradually at constant boundary pressure difference conditions in the flow field.
2001 05 [Abstract][OnlineView][Download 137K] - BU Chang- sen1,LIANG Ming2 ,QU Xiu- shu1 (1.Guojiazhuang Coal Mine,Feicheng Mining Corporation,Feicheng2 71613,China; 2 .Xi′an University of Science & Technology,Xi′an 710 0 5 4 ,China)
A groundwater inrush occurred with water amount reached 32 970 m3/ h at- 2 10 m North Main Tunnel in Guojiazhuang Coal Mine of Feicheng Mining Area.The geological structures are complicated near the water inrush point,and different aquifers contact each other.The severe inrush resulted from confined water gushing into tunnel through weak fractures.
2001 05 [Abstract][OnlineView][Download 271K] - WANG Hui,L IU Tian- fang (College of Mineral Resource & Environment Sciences,CUMT,Xuzhou2 2 10 0 8,China)
In the process of seismic exploration,because of the terrain,facility,personnel′s carelessness and other factors,som e recorded shot positions inevitably deviate from its real sites.Not only do harm for static correction and NMO,but also affect gathering and stacking seriously.It compounds signals from different reflection points and results in false conclusions.The influence of shot position's deviation on the seismic data stacking accuracy is analyzed here,and also introduces some methods on shot position check and correction.It is helpful for refined seismic data processing.
2001 05 [Abstract][OnlineView][Download 384K] - LI Lan- ting,HOU Ji- xiang (Datong Coal Mine Corporation,Datong 0 370 0 3,China)
Through a great deal of tunnel perspect- surveying works in datong coalfield,summarized the curves features of the fault and the collapse column.Based on the study of two application examples and verification works in datong coalfield.The author holds that the tunnel perspect muse be verified after a lot of exploiting information and sum up experiences,this techniques can be used accurately in datong coalfield.
2001 05 [Abstract][OnlineView][Download 310K] - HAN Xu- shan,ZHANG Jing- kao,L IU Zhen- xiang,L IN Zhen- ting (The Digital Logging Station of Shandong Bureau of Coal Geology2 710 0 0 ,China)
Cracks in coal seams are important parameters in coal methane exploration and development.Developing degree and attitude of cracks in coal seams can be observed by sound wave scan images and the dynamic properties can also be analyzed providing gist for comprehensive appraisal of container beds of coal bed methane.
2001 05 [Abstract][OnlineView][Download 223K] - YU Wang- cai,XU Chong- bao (Geophysical Survey Team,Shangdong Coal Field Exploration Administration,Taian 2 710 2 1,China)
Gypsum is an important mineral.With the seismic prospecting technology applying systematically for the development of gypsum mine,the existing state of gypsum layer and geological structure feature have been controlled,and also the favorable geological effect and considerable economic benefit have been obtained.
2001 05 [Abstract][OnlineView][Download 190K] - L IU Qing- wen (Xi′an Branch,CCRI,Xi′an710 0 5 4 ,China)
To increase the survey accuracy,the3points- 3poles lead survey method,treatment techniques and explanation method are presented,through demonstrating the electrical lead survey principles and factors impacting underground safe space.The survey methods are characterized by avoiding the impacting of roadway behind the driving and the electrical changes of bedded strata.
2001 05 [Abstract][OnlineView][Download 275K] - ZHANG Jia- tian,L I Xin- hua (Department of Electronic Engineering,Xi′an Petroleum Institute,Xi′an 710 0 65 ,China)
For scientific evaluate drilling fluid characteristic,it is requisite to detect the quality of drilling fluid real time.The drilling fluid rheology param eter automation detect system is controlled by com puter and can real time automatism detecting circle drilling fluid rheology.The system software is designed and the math model is established.A new method of drilling fluid characteristic evaluate is lodged.
2001 05 [Abstract][OnlineView][Download 89K] 下载本期数据