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Digital close-range photogrammetric application to small-scale physical simulation experiment

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中国有色金属学会会刊：英文版 2011年第S3期21卷 681-685页

作者： LI Chun-yi1, CUI Xi-min2, YU Yi-ju3 1. School of surveying and Landing Information engineering, Henan Polytechnic University, Jiaozuo 454003, China 2. college of geoscience and surveying engineering, China University of Mining and Technology, Beijing 100083, China 3. surveying and Mapping Press, Beijing 100045, China [a] School of surveying and Landing Information engineering Henan Polytechnic University Jiaozuo 454003 China [b] college of geoscience and surveying engineering China University of Mining and Technology Beijing 100083 China [c] surveying and Mapping Press Beijing 100045 China

In order to research the possibility of digital close-range photogrammetric surveying in small scale physical simulation experiment, physical model coinciding with engineering practice was constructed based on similar theory. The datum processing method and surveying precision of digital close-range photogrammetric were analyzed. And the function relationship between overburden subsidence factor qr and the ratio z/H of stratum horizon z and mining depth H was researched. The results show that surveying points position mean error along horizontal direction is ±0.131 mm and vertical direction is ±0.192 mm. Therefore, multi-taking station cross direction digital close-range photogrammetric can completely satisfy the precision need of physical simulation experiment. And the empirical formula can be utilized to represent evolution law of stratum subsidence factor.

关键词： close-range photogrammetric physical simulation light-rays adjustment surveying precision subsidence factor

Ecological-Based Mining:A Coal-Water-Thermal Collaborative Paradigm in Ecologically Fragile Areas in Western China

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engineering 2024年第7期38卷 209-222页

作者： Xiaoxiu Liu Yifan Zeng Qiang Wu Shihao meng Jiyue Liang Zhuping Hou National engineering Research Center of Coal Mine Water Hazard Controlling China University of Mining and TechnologyBeijing 100083China college of geoscience and surveying engineering China University of Mining and TechnologyBeijing 100083China University of Mining and Technology(Beijing)Inner Mongolia Research Institute Ordos 017000China

A substantial reduction in groundwater level,exacerbated by coal mining activities,is intensifying water scarcity in western China’s ecologically fragile coal mining ***’s national strategic goal of achieving a carbon peak and carbon neutrality has made eco-friendly mining that prioritizes the protection and efficient use of water resources *** on the resource characteristics of mine water and heat hazards,an intensive coal-water-thermal collaborative co-mining paradigm for the duration of the mining process is *** integrated system for the production,supply,and storage of mining companion resources is achieved through technologies such as roof water inrush prevention and control,hydrothermal quality improvement,and deep-injection geological *** active preventive and control system achieved by adjusting the mining technology and a passive system centered on multiobjective drainage and grouting treatment are suggested,in accordance with the original geological characteristics and dynamic process of water *** implementing advanced multi-objective drainage,specifically designed to address the“skylight-type”water inrush mode in the Yulin mining area of Shaanxi Province,a substantial reduction of 50%in water drillings and inflow was achieved,leading to stabilized water conditions that effectively ensure subsequent safe coal *** integrated-energy complementary model that incorporates the clean production concept of heat utilization is also *** findings indicate a potential saving of 8419 t of standard coal by using water and air heat as an alternative heating source for the Xiaojihan coalmine,resulting in an impressive energy conservation of 50.2%and a notable 24.2%reduction in carbon *** ultra-deep sustained water injection of 100 m^(3)·h^(-1)in a single well would not rupture the formation or cause water leakage,and 7.87×10^(5)t of mine water could be effectively stored in the Liujiagou Formation,presenti

关键词： Dual carbon targets Coal-water-thermal co-mining Ecologically fragile areas Mine-water control Resource utilization

A 2D stability analysis of the rock surrounding underground liquified natural gas storage cavern based on COMSOL Multiphysics

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Energy geoscience 2024年第3期5卷 351-361页

作者： Chao Zhang Pinjia duan Yuke Cheng Na Chen Huan Huang Feng Xiong Shaoqun Dong CNOOC Gas&Power Group Ltd. Beijing100028China School of Civil engineering and Architecture Hubei University of TechnologyWuhan430068China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China college of Science China University of Petroleum(Beijing)Beijing102249China

Underground liquified natural gas(LNG)storage is essential in guaranteeing national energy strategic reserves,and its construction is being *** stability of surrounding rock of underground LNG storage caverns under stress-low temperature coupling effect is the key factor determining the feasibility of LNG ***,a mathematical model used for controlling the stress-low temperature coupling and the processes of rock damage evolution is given,followed by a 2-D numerical execution process of the mathematical model mentioned above described based on Comsol Multiphysics and Matlab ***,a series of 2-D simulations are performed to study the influence of LNG storage cavern layout,burial depth,temperature and internal pressure on the stability of surrounding rocks of these underground storage *** results indicate that all the factors mentioned above affect the evolution of deformation and plastic zone of surrounding *** research results contribute to the engineering design of underground LNG storage caverns.

关键词： Underground LNG storage Thermo-mechanical(TM)coupling Stability of surrounding rock Low temperature Comsol Multiphysics

Organization and Query of Point Clouds Data Based on SQL Server Spatial

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Organization and Query of Point Clouds Data Based on SQL Ser...

2010 3rd IEEE International Conference on Computer Science and Information Technology—ICCSIT 2010

作者： Yijin Chen Huixia Zhang Xiaoxue Fu college of geoscience and surveying engineering China University of Mining &Technology Beijing Beijing China

Three-dimensional laser scanning produces a large number of point clouds data. In order to efficiently retrieve the point clouds data, this paper stores the point clouds data in SQL Server 2008, and create a spatial index. Using C # software and SQL Server 2008 Spatial technology to achieve the storage and inquiry of point clouds data, and the results of the inquiry is carried out visualization in the MapObjects component, preparing for the follow-up feature extraction. The test shows that the method greatly improves the efficiency of point clouds data retrieval.

关键词： point cloudss data SQL Server 2008 Spatial index

Application of remote sensing interpretation in waterlogged area resulted from mining subsidence and water quality monitoring

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Application of remote sensing interpretation in waterlogged ...

The 4th International Conference on Environmental and engineering Geophysics

作者： Wenjie Sun,Qiang Wu,Donglin Dong,Yu Zhang college of geoscience and surveying engineering,China University of Mining & Technology,Xueyuan Road D11,Beijing,China 100083

In order to solve the problems of waterlogged scope resulted from mining subsidence and water quality,this paper taking Nansi Lake in Shandong Province as an example applies remote sensing interpretation technique in the images overlaying of different time phases in flood period and drought *** results show that the difference of water area is 168.95km above two-stage dam of Nansi Lake between flood period and drought period,three kinds of water body and large wetland are marked by images,the first water area is 13.34km,the second is 102.73km, the third is 241.28km,there is another hydrophytic wetland or shallow swamp whose area is 345.52km,and according to TM image analysis,the black image region of mine is ponding subsidence,which provides significant basis for delineating ponding of mining subsidence and development and utilization.

关键词： Remote sensing interpretation Mining subsidence Waterlogged subsidence Water quality monitoring

Treatment of Cr（VI） contaminated groundwater by PRB simulation with ash and iron

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Treatment of Cr（VI） contaminated groundwater by PRB simula...

2010 International Conference on Nuclear Energy and engineering Technology (NEET 2010)

作者： Wei Zhang School of Energy and Environment engineering Hebei University of Technology Tianjin China Huasheng Wang Faculty of Architectural and Mapping engineering Jiangxi University of Science and Technology Ganzhou Jiangxi Province China Feng Ding college Of geoscience and surveying engineering China University of Mining & Technology

The simulating PRB was filled with iron and fly ash, the ratio of two materials was 1:1. The groundwater contaminated by Cr （VI） was conducted by dynamic simulating test. The experiment showed that the pH was changing in the flowing water treated with simulating PRB and the water volume changes with the processing of experiment, also showed the removal ratio of Cr （VI）. The testing results show when the pH of flowing water is 7-8,the effect of treated water is well. And, with the experiment is going on, the water volume is steady in a time, the removal ratio of Cr （VI） has close relationship with pH in flowing water treated by simulating PRB. As a result of Statistical data, there are great relationships between three factors which are pH in flowing water treated by simulating PRB, water volume treated by simulating PRB and the removal ratio of Cr （VI）. The experiment show that PRB technology can be designed on site in right place to treat the Cr（VI） contaminated groundwater as soon as the media of PRB can be changed in time, and control the pH、the ratio of the media.

关键词： iron and ash contamination of groundwater Cr(VI) PRB

农村建设用地整治潜力精准预测与地块整治优先级识别

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中国土地科学 2024年第3期38卷 60-70页

作者：梁翔陈文波段鹏杨欢东华理工大学测绘与空间信息工程学院江西南昌330013 东华理工大学南昌市景观过程与国土空间生态修复重点实验室江西南昌330013 江西农业大学国土资源与环境学院江西南昌330045

研究目的:测算不同村庄类型下农村建设用地整治潜力,精准识别地块整治优先级,使得土地整治决策更加准确、科学。研究方法:以湖北省黄梅县为研究区域,结合空间规划和自身资源禀赋对村庄进行分类;对不同类型村庄的农村建设用地整治潜力进... 详细信息

研究目的:测算不同村庄类型下农村建设用地整治潜力,精准识别地块整治优先级,使得土地整治决策更加准确、科学。研究方法:以湖北省黄梅县为研究区域,结合空间规划和自身资源禀赋对村庄进行分类;对不同类型村庄的农村建设用地整治潜力进行测算,并利用单类支持向量机对农村建设用地图斑的整治重要性进行识别,最终实现潜力总量约束下的潜力图斑的整治优先级安排。研究结果:(1)黄梅县共划分出城郊融合型、特色保护型、集聚发展型、存续提升型、搬迁撤并型5类村庄类型,其中包含村庄数量最多的是存续提升型,共有272个行政村;(2)规划期内黄梅县农村建设用地整治理论潜力规模6624.66 hm^(2),现实潜力规模3586.03 hm^(2);(3)整治紧迫图斑占潜力规模的7.21%,整治较紧迫图斑占潜力规模的15.02%,整治一般紧迫图斑占潜力规模的51.14%,整治不紧迫图斑占潜力规模的26.63%。研究结论:村庄分类下的农村建设用地整治潜力规模预测与地块整治优先级识别,可以为村庄布局优化和乡村全域土地综合整治提供理论参考和实践操作模式。

关键词：农村建设用地村庄分类整治优先级整治潜力黄梅县

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煤系岩石产酸潜力的索氏淋滤实验评价

中国矿业大学学报 2013年第2期42卷 214-220页

作者：赵峰华孙红福刘乃利中国矿业大学(北京)地球科学与测绘工程学院北京100083 中国矿业大学(北京)煤炭资源与安全开采国家重点实验室北京100083

为了准确评价非均质性较强含煤岩系样品的产酸潜力,采用索氏淋滤实验方法对山西省西山煤田石炭二叠纪含煤岩系岩石样品的产酸潜力进行了评价,建立了煤系岩石产酸潜力的索氏淋滤实验评价方法.结果表明:1)淋出液pH值小于7、(Ca+Mg+Mn)/SO... 详细信息

为了准确评价非均质性较强含煤岩系样品的产酸潜力,采用索氏淋滤实验方法对山西省西山煤田石炭二叠纪含煤岩系岩石样品的产酸潜力进行了评价,建立了煤系岩石产酸潜力的索氏淋滤实验评价方法.结果表明:1)淋出液pH值小于7、(Ca+Mg+Mn)/SO24-累积摩尔比小于1的样品被评价为产酸样品,反之被评价为不产酸样品.据此将西山煤田的泥岩、砂岩和菱铁矿等3个样品评价为不产酸样品(淋出液pH>8,(Ca+Mg+Mn)/SO24-累积摩尔比1.99～2.91),2个非均质黄铁矿样品评价为强产酸样品(淋出液pH<3.4,(Ca+Mg+Mn)/SO24-累积摩尔比0.08～0.58);2)基于淋出液SO24-浓度计算的2个非均质黄铁矿样品产酸速率分别为177.1mM[SO24-]/(kg.d)和291.8mM[SO24-]/(kg.d);基于淋出液(Ca+Mg+Mn)浓度计算的砂岩、泥岩和非均质菱铁矿样品酸中和速率为10.73～68.77mM[Ca+Mg+Mn]/(kg.d);3)产酸样品淋出液中SO24-离子累积质量浓度为507～1 681mg/L,Fe离子累积质量浓度为135～753mg/L;不产酸样品淋出液中SO24-离子累积质量浓度小于140mg/L,Fe离子累积质量浓度小于1.2mg/L;4)不产酸样品淋出液的S/Fe摩尔比大于66,2个产酸非均质黄铁矿样品淋出液的S/Fe摩尔比为0.95～3.2;5)样品淋滤过程中产生了赤铁矿、石膏和硬石膏等次生矿物相.

关键词：索氏淋滤实验产酸速率酸中和速率含煤岩系

鄂尔多斯盆地煤层(岩)气勘探开发进展及发展方向

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天然气工业 2024年第10期44卷 63-79页

作者：李勇徐凤银唐书恒王延斌孟尚志徐强中国矿业大学(北京)地球科学与测绘工程学院北京市100083 中国石油学会中国地质大学(北京)能源学院中联煤层气有限责任公司中国煤炭地质总局勘查研究总院

鄂尔多斯盆地历经30余年的不断探索,已在盆地东缘形成了超千亿立方米探明储量规模的浅层煤层气产业基地,并于2019年后逐步实现了盆地深层煤岩气勘探开发重大突破。为了进一步推动盆地深层煤岩气规模效益开发,在系统梳理盆地煤层(岩)气... 详细信息

鄂尔多斯盆地历经30余年的不断探索,已在盆地东缘形成了超千亿立方米探明储量规模的浅层煤层气产业基地,并于2019年后逐步实现了盆地深层煤岩气勘探开发重大突破。为了进一步推动盆地深层煤岩气规模效益开发,在系统梳理盆地煤层(岩)气勘探开发历程和开发地质特征的基础上,总结了盆地煤层(岩)气勘探开发取得的主要成果和形成的关键勘探开发技术,提出了煤层(岩)气勘探开发的理论与技术发展方向。研究结果表明:①盆地主体经历了勘探开发探索(1991-2002年)、典型区带勘探开发突破(2003-2008年)、浅-中层煤层气规模勘探开发(2009-2018年)和深层煤岩气规模勘探开发(2019年至今)4个阶段,煤层(岩)气产量和深度不断取得重大突破;②受控于沉积环境、埋深、构造、水文条件、应力场等地质因素,煤层(岩)气从浅层向深层形成孔渗物性变差、游离气含量增加、含水量降低等储层特征演化,生产特征由排水采气转变为开井见气;③深层煤岩气勘探思路由有利区向地质-工程一体化甜点区转变,形成了地下-地面一体化的大井丛井网设计技术,研发了“密切割+大排量+组合支撑剂+前置酸+变黏滑溜水”极限体积压裂技术体系,提出了全生命周期煤岩气排采理念和排采技术。结论认为:①浅层煤层气需要围绕“高产老区稳产、低产低效区盘活、未动用区效益建产、非主力层系接替”4个方面推动规模效益开发;②深层煤岩气继续强化“煤系组合-煤层结构-煤体结构-煤岩类型”4个层次差异,完善“地应力-天然裂缝-人工裂缝-井型与方位-井网井距”五位一体井网设计,攻关“立体勘探、有序开发、多气协同、效益产出”开发技术。

关键词：鄂尔多斯盆地浅层煤层气深层煤岩气勘探开发历程地质认识开发技术技术发展方向