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July 30,2009
Volume 2,Issue 14
Pages 1417-1518
Subject Area:Geographic Information System,Close-Range Photogrammetry,Cadastral Survey,Geodesy

Title: Analysis and discussion on dynamic measurement accuracy model

Authors: GAN Zhiqiang, HAN Zexi
PP: 1514～1518
Abstract: How to describe and grasp the changing regularity of dynamic system’s accuracy has become a hot issue in measurement technology area. This paper analyzes the existing problems in traditional modeling theory which adopts error to characterize the accuracy of a dynamic measurement system. It also describes the modeling theory and method of the dynamic measurement accuracy model which is characterized by uncertainty based on the function of transfer chain in general dynamic measuring accuracy theory. The accuracy model of the dynamic measurement system can take all the influences on the measurement system accuracy into account. At last, it gives the accuracy model of two typical measurement systems.
Keywords: engineering survey technology; dynamic measurement accuracy model; function of transfer chain; uncertainty

Title: Spatial data integration based on Google Map

Authors: GAO Haoliang, YANG Qinzhi, CONG Xiaonan, WANG Yuanfei
PP: 1509～1513
Abstract: Google Map achieves new technology model for WebGIS Google Map represents static spatial information by tiling images and displays dynamic spatial information on client. This approach makes problems like small data coverage, slow update, difficult to edit, etc. To solve these problems This paper analyses the technology model of Google Map, and publishes the existed data as WMS and TMS, then integrates it with Google Map, which proves that the analyzed technology model is proper and effective.
Keywords: mapping technique； Google Map; tile; data integration

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Title: An extension method of space syntax

Authors: ZHENG Xinqi, SU Yanjun, YANG Guang, ZHAO Lu, WANG Shuqing
PP: 1498～1503
Abstract: Space syntax has been applied in many fields, but because its principle is abstract, its practical application is limited. After the statistical analysis of the data from 10 cities at home and abroad, this paper added the road width indicator during the calculation, extended the space syntax, and got the experience formula of space syntax extension. It is showed that the revised calculation results accorded with the city’s actual situation much better. This study can provide a new way for the extension and application of space syntax.
Keywords: mapping technique; space syntax; road width; experience formula; cities

Title: Regional cultivated land slope classification process based on spatial landscape pattern and application thereof: the case of Ganjingzi district of Dalian

Authors: YANG Jun, LI Xueming, LI Yonghua, QU Wei, ZHANG Sen
PP: 1492～1497
Abstract: This paper analyzes the spatial landscape pattern of the cultivated land patch in 1∶10 000 landuse database of Ganjingzi district of Dalian; discusses the relationship between regional landuse cultivated land slope classification and digital elevation model (DEM) scale; presents the regional cultivated land slope classification process by use of geographic information system (GIS) combined with DEM; realizes the cultivated land slope level automatic extraction through GIS program; calculates the field ridge coefficient and the cultivate land net area through the cultivated land slope classification. And also provides a scientific basis for the cultivated land database of the Ganjingzi district; and provides spatial decision-making support for protection and potentiality analysis and ecological and environmental protection of the cultivated land.
Keywords: mapping technique; spatial landscape pattern; slope level of cultivated land; digital elevation model scale; terrain analysis

Title: Comparative study on fusion algorithms of Quickbird panchromatic and multi-spectral images

Authors: XU Min, LIU Yong, WANG Xiaoyan, QIAO Rong
PP: 1486～1491
Abstract: In this paper, four different fusion algorithms such as Brovey, high-pass filtering (HPF), principal component analysis (PCA) and PCA replacement of wavelet transform were compared when the panchromatic and multi-spectral images of Quickbird were merged. It used mean value, standard deviation, signal-to-noise ratio, information entropy, average gradient, correlation coefficient and deviation index to evaluate the quality of fusion. With consideration of the spectral information fidelity, information content and clarity, the experiment indicates that PCA is the best fusion algorithm and PCA replacement of wavelet transform is better than Brovey and HPF, thus the suitable fusion method for Quickbird data was screened out.
Keywords: mapping technique; Quickbird image; image fusion algorithm; quality evaluation

Title: A study on relationship between urban expansion and urban heat island based on remote sensing data

Authors: CHEN Binbin, CHEN Liang
PP: 1481～1485
Abstract: Urbanization make the increasing number and scale of city. Urban heat island effect is the internal temperature was significantly higher than the surrounding suburbs, which is the typical characteristic of city climate. Jiangning district of Nanjing is in a rapid industrialization and urbanization development period, the fast urban expansion in recent years, urban heat island effect significantly. In this paper, the Jiangning district for urban expansion and urban heat island extraction and analysis of their relationship by two temporal Landsat TM and ETM + data. The results show that the different features coverage of the impact of the same surface temperature, vegetation and the temperature was negatively correlated, urban heat island effect of making further intensified.
Keywords: photogrammetry and remote sensing; urban expansion; urban heat island; brightness temperature

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Title: The design and control optimization of a new fast middle range 3D laser scanner

Authors: CHEN Yulin， ZHANG Aiwu， PANG Yongtao
PP: 1473～1474
Abstract: This paper designes and realizes a new fast middle range 3D laser scanning system. In the aspect of hardware, a 2D laser radar is mounted on an accurate electronic rotary table which can rotate horizontally, and driven by the rotary table to scan over the objective area, measuring points\' range by the laser beam. With the accurate time synchronization by the software control system, the transmitting angles of the laser beam can be measured and recorded, then be reverted to the original coordinates of the objective area. Besides the system control module, the real-time data displaying and data processing modules are designed and developed in the software system.
Keywords: photogrammetry and remote sensing; 3D laser scanning; laser radar; system design; control software

Title: Remote monitoring research grassland desertification around built-up area of the city

Authors: WANG Guangjun, FU Meichen, XIAO Qiuping, WANG Zeng
PP: 1463～1468
Abstract: This paper presents the spatial extent, magnitude and temporal behavior of grassland desertification caused by urban expansion. The selected test site, Huolinguole city, is a grassland city located in northeast China. A time-series of Landsat TM images covering a period of 20 years (1987～2006) were used. The built-up area of the city, grassland desertification indicators and grassland desertification degree information were extracted based on BP neural network and spectral mixture model, and the spatio-temporal evolution characteristics were analyzed. The results of the studies indicated that there was a significant increase in urban expansion from 1987 to 2006, and the similar trend was observed in the temporal magnitude behavior of the severe grassland desertification around the built-up area of the city; the severe grassland desertification was always in shape of triangle around the built-up area of the city, and developed to the east quickly with the help of monsoon; and there was a positive correlation between the built-up area of the city and the area of severe desertification, so the built-up area of the city could be used as an important assessment and prediction indicator for grassland desertification due to urban expansion.
Keywords: photogrammetry and remote sensing; urban expansion; grassland desertification; remote sensing; spatio-temporal analysis

Title: Problem analysis of map spot area calculation on ellipsoid surface in land survey

Authors: WANG Jiandi, KE Zhengyi
PP: 1456～1462
Abstract: The existing problem of map spot area calculation on ellipsoid surface in relevant regulations is analyzed in this paper. On the basis of the analysis, it’s verified that the essential condition to use the relevant regulations directly is that points on digital line thematic graph of land use status must be inserted on each side of polygon with distance between adjacent points not over 70 m. In order to verify reliability of the above condition, an example of area calculation of Zhejiang province is introduced.
Keywords: cadastral survey; land survey; area calculation; Guass plane area; ellipsoid surface area

Title: Research on medium-long baseline solution method only using Fr(φ)

Authors: LI Zhenghang, QU Xiaochuan, GONG Xiaoying
PP: 1450～1455
Abstract: In the traditional baseline solution methods, the tasks of cycle slips detection and restoration as well as integer ambiguity determination are very important and complicated, which can be negligible in the new baseline solution method only using Fr(φ). In this method, dual-frequency observation can not be adopted to correct ionospheric delay, so it can only be used in the solution of short baseline. For solving this problem, the method uses glass insulating material (GIM) provided by international GNSS service (IGS) to correct the ionospheric delay and achieves good result in the solution of medium-long baseline. The results indicate that when computing global positioning system (GPS) control network with 31-107 km side lengths using 24 h observation data and the above method, the accuracy of medium-long baseline can reach to 0.2×10-6.
Keywords: geodetic surveying technique; medium-long baseline solution method; ionospheric delay; global ionospheric map

Title: Study and application of water plugging process injecting degassed oil

Authors: LI Yubin, LI Chunsheng
PP: 1446～1449
Abstract: This paper introduces a water plugging process injecting degassed oil into water yielding layer, which creatively applies oil and gas reservoir relative permeability theory. This approach is characterized by simple water-plugging constructions, easy access to water-plugging agents, and low water-plugging cost. This paper introduces a ground construction technique, injection-production pipe in the oil well and an integral injection-production technology that injecting degassed oil in the oil well when the water cut of the oil well is tall and producing oil by the same pipe line, During the mid-and-late oil developing period, this approach is adopted in water plugging and plays a great role in liberating the productivity of the mid-and-low permeability oil layer, decreasing water production in oil fields, and enhancing the final oil recovery in oil fields.
Keywords: mining engineering; water plugging; relative permeability; oil recovery

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Title: Effect of layer charge of montmorillonite and dosage of alkylammonium on the gelating property of the organo-montmorillonite

Authors: LV Xianjun, QIU Jun, CUI Xueqi
PP: 1436～1439
Abstract: Organo-montmorillonite (OM) samples were synthesized with two montmorillonite samples of different layer charge and under different dosages of dodecyltrimethylammonium (DTA) chloride, and the viscosities of the OM gels prepared in the mixture of dimethylbenzene and ethanol were measured. Results show that the layer charge and the dosage of DTA are the key factors influencing the OM gel viscosity. Higher OM gel viscosity was obtained with lower layer charge montmorillonite. In order to achieve a maximum OM gel viscosity, the dosage of DTA should be maintained at an optimal level.
Keywords: mineral processing engineering; layer charge of montmorillonite; organo-montmorillonite; gelating property; alkylammonium

Title: Analysis and study on the source of CO occurred in methane drainage boring for the flammable coal seam

Authors: WEI Yinshang, CHANG Xintan, WANG Peng, SU Qihui
PP: 1431～1435
Abstract: Based on investigating the condition of CO occurred in the methane drainage boring at the 416 working face in Chenjiashan Mine, this paper analyzed the source of CO. By the experiment, it was found that CO can be produced during the coal oxygenation reaction at low temperature, and a special rule was discovered that the consistence of CO will become lower with the increase of temperature while the coal oxygenation reaction starting. Besides, an analyzing model about the source of mixed gases was set up based on real situation of methane drainage boring laying in the coal seam. It was found that different kinds come from different area, and the CO comes from boring wall and the goaf connected to the boring. The result plays a reference role for preventing the spontaneous combustion disaster in coal mines.
Keywords: mine safety; CO; drainage boring; spontaneous combustion; methane drainage

Title: The study on filling technique of Dabaoshan mine goaf in Guangdong

Authors: CHENG Guojin, ZHANG Qinli
PP: 1425～1430
Abstract: A super large goaf near to 2# inclined shaft, ranging from 500 m to 610 m level, is a dangerous factor for shaft station and future mining activity in Copper Branch of Dabaoshan Mineral Limited Company, Guangdong. The spatial distribution of the goaf is learned thoroughly, based on detailed field investigation and data analyses in the mine. Two kinds of treatment methods, namely waste rock filling technology and crude tailings fill technology, are proposed according to the specific mining conditions. The main physical and mechanical properties are measured and mechanism of the filling body is discussed in this paper. It is theoretically confirmed that goaf could be treated effectively by waste rock filling technology and crude tailings fill technology. The result is helpful to remove the hidden danger from goaf, to protect environment, and to accomplish the sustainable development of the mine.
Keywords: mine safety; Dabaoshan mine; goaf; waste rock filling; crude tailings fill; filling system

Title: The research on destruction process of gently-slant stratified surroundings of roadway

Authors: ZHAO Yuan, LIU Zhe, HU Lihua
PP: 1417～1424
Abstract: This paper used geomechanical model experiment based on the similarity theory to study the distortion destruction process of roadway under crustal stress function. The study has used plate-type elements to simulate the gently-slant stratified surroundings of the roadway. It has been used to simulate occurrence and constitutive characteristics of the gently-slant rock (8 in Qishan coal mine, Xuzhou mining area. The entire destruction process of roadway has been reappeared. The experiment process and the result indicate that the physical model has well reflected occurrence and structural features of the actual engineering rock mass. It has been obtained that the distortion characteristics of the gently-slant rock mainly include asymmetrical distortion and obtuse angle destruction. The conclusion has important meaning to the roadway stability control.
Keywords: sinking and driving engineering; model experiment; cell board; gently-slant rock stratum; asymmetrical deformation; obtuse angle destruction

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