Advanced Materials Research Vols. 1073-1076

Abstract: This paper establishes the lithological sequence of different salinization stage through the corresponding relation between the salinity and salt minerals. It develops salt gypsum rock-glauber's salt-gypsiferous mudstone-dolomitein in brine stage, and stratiform limestone-lamina argillaceous limestone/ lime mudstone-stratiform argillaceous limestone in salt water stage and stratiform argillaceous limestone/ lime mudstone-massive lime mudstone/ massive mudstone in brackish water stage. The shale sedimentary evolution model is established, with climate changing from the hot dry to wet, and water from shallow to deep, and salinity from high to low, lithological sequence is gypsum-carbonate-argillaceous limestone - lime mudstone and mudstone.

Abstract: Stratigrafic division and correlation are the basis study on sedimentation and reservoir. Guided by the theory of sedimentology,using drilling,logging,sesmic and other data,with the integrated application of various methods,124 wells which drilled in formation Yingcheng-Shahezi of Lishu rift were carried out classification and correlation,which have shown that formation Shahezi overlapped from sag to high positon,and formation Yingcheng suffered severe erosion later. Three regional marker beds can be identified,formation Yingcheng and Shahezi can be divided into four sand groups. Sangshutai sag was the deep depression of each sand group,Qinjiatun,Sujiatun and Shuanglong area were sub-sags,sedimentary center steadily developed.

Abstract: Geza arc is the important parts of Yidun island arc in southwest of Sanjiang tectonic magmatic belts, it located in the southern tip of the Yidun island arc, which is a newly discovered copper polymetallic ore concentration area in the recently years in China. Based on the development stage of island arc orogenic, the distribution of intrusive rocks, composition, geochemical characteristics, Geza island arc granits belt can be divided into three belts. Geza island arc several typical porphyry deposits Pb isotopic data show that Pb²⁰⁶/Pb²⁰⁴ 17.680~19.165, Pb²⁰⁷/Pb²⁰⁴ 15.453~15.773,change in scope, Pb²⁰⁸/Pb²⁰⁴ 37.730~39.654. Most of samples are normal lead, Pb isotopes focused on the side of orogenic evolution line and the lower crust range,with the characteristics of crust-mantle mixed source.

Abstract: Deep-water fan systems have become the main body of international oil production and reserves growth. It has important significance of science and production to study the sedimentary characteristics of deep-water fans. On the basis of a large number of literature research, this paper summarizes the research history and current situation of the deep-water fan. For several kinds of sedimentary microfacies in the fan, typical sedimentary characteristics and seismic combination structures are identified, including the composition, sedimentary structure, granularity, contact relation, seismic reflection and so on. These results are hoped to be helpful for sedimentary microfacies discrimination and research of deep-water fan.

Abstract: The Guihuachong copper deposit is located in the Shatanjiao ore field along the MLYRMB in eastern China, mainly consist of porphyry ores hosted in granodiorite porphyry, which has newly been discovered in recent years. Metal ore minerals are mainly pyrite, chalcopyrite, bornite, sphalerite, magnetite, secondary minerals are hematite, pyrrhotite, galena, and tetrahedrite, natural gold, silver and other minerals. The gangue minerals are mainly for the plagioclase, calcite, potassium feldspar, garnet, diopside, kaolinite, quartz, biotite, chlorite, siderite, fluorite, anhydrite and hornblende.

Abstract: The boundary magnification phenomenon was achieved in the coal mile surrounding rock, the displacement of surrounding rock was gradually increased, then more gentle in the plastic zone and sharply increase in the broken zone. The overall process of the displacement of surrounding rock exhibited graded changing trend; when the impact came, the broken zone had connected fissures caused by stretch of waves. It eventually increased the degree of damage in the boundaries of the broken zone and roadway. Accordingly, roadway support parameters were adjusted appropriately. From the energy point of view, the length of the anchor bolt was extended properly and that of the anchor cable was reduced properly. The adjusted length of the anchor bolt and cable well matched the size of the broken zone and plastic zone in roadway on site. There was a very good support effect. Anchor production process was also considered to improve gradient strength of materials which can better adapt to the rock burst environment.

Abstract: Due to the large flow, low concentration, low enrichment efficiency, potential safety hazards and the difficulty of comprehensive utilization, it is a big challenge for the development and application of enrichment and separation technology for coal mine ventilation methane (CMVM) at home and abroad. And many countries paid more and more attentions to resolve this problem. In this paper, we comprehensively introduce the research progress in the field of gas enrichment and separation of CMVM, and analyze the related research and application situation. Then, we put forward the enrichment and separation of CMVM in the future development will focus on high efficient adsorbent and adsorption & separation & enrichment technology and equipment, etc. in order to effectively form the system technology of separation & enrichment of CMVM. So we can provide technical support and auxiliary equipment for the domestic related enterprises, and ensure the mine safety and CMVM utilization. The application of CMVM in the laboratory can make mining engineering students learn how to use environmental technology to realize energy saving and emission reduction in coal mine.

Abstract: Aiming at the problem of serious deformation and failure of the surrounding rock of the main roadways in diabase zone in west wing on-500m leve in Dongbaowei Coal Mine and roof caving occurring several times, the rupture characteristics of roadway roof rock was observed in this paper. And the observation result shows that the rupture of the roof rock of the roadways in diabase zone has obvious zoning characteristics, and the roadway roof rock is divided into three zones: fragmentation zone, fissure zone and intact rock zone. According to this, this paper introduced a new concept of controlling roadway roof subsidence and redesigned the support parameters of the roof of the roadway in diabase zone. The deformation monitoring of the testing roadway roof rock was carried out, and the monitoring result shows that the anchor supporting scheme which was based on the “three zones” of roadway roof could control the roof rock deformation better. This indicates that roadway anchor support design method which is based on the “three zones” of roadway roof is correct and feasible.

Abstract: For fault displacement on the influence of the water flowing fractured zone, using the methods of numerical simulation analysis, the research simulated the coal seam mining of mid-hard superincumbent stratum. Through the simulations of the influence to water flowing fractured zone of different fault displacements, the study concluded that: with the increase of fault throw, the increase of the height of water flowing fractured zone is not big, in general, the increase value is bigger 2.44 ~ 7.32% than no fault existence in the coal seam mining.

Abstract: The underground salt caverns created by solution mining used for storage has great advantages over other storage methods. However, not every underground salt cavern created in China is suitable for CO₂ storage owing to different reasons like water resources and the depth of salt caverns. The author searched for the geographic information of salt layers in China first. Secondly , through general analysis like analyzing salt caverns’ location and plate, some salt layers good for CO₂ storage are listed. Comparing to a case studying from Australia's Otway Basin, which applies underground gas storage experience to geological carbon dioxide storage, the author analyzed the possibility of CO₂ storage in Jingtan,China from different aspects mainly about the leakproofness and salt caverns stability. Some suggestions are given concerning the construction of CO₂ storage in underground salt caverns at last.