Study on Hydrochemical Characteristics of Ordovician Limestone in Jiaozuo Mining Area

In order to understand the source of groundwater inrush and its hydrogeochemical evolution path truly, determine the evolution characteristics and development trend of water cycle, and effectively solve the problem of water disaster in mining area. In this paper, Jiaozuo mining area, a typical large water mining area of North China type, is selected as the study area. Taking the Ordovician aquifer in the study area as the research object, the Ca2+ hydrochemical equilibrium model of Ordovician limestone water system is established by analyzing the characteristics of concentration gradient field and the relationship between the hydrochemical ions (Ca2+、K++Na+、Mg2+、Cl-、SO42-、HCO3-) and TDS in the mining area, it made a systematic study on the characteristics of Ordovician limestone water circulation, and analyzed the recharge, runoff and discharge characteristics of groundwater in different areas of the mining area. The results show that the Ordovician limestone water in the Jiaozuo mining area has a weak leaching effect in the north and southwest, but a strong leaching effect in the southeast, which shows a runoff characteristic from the north and southwest to the southeast.

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Simplified Phasmatodea population evolution algorithm for optimization

Complex & Intelligent Systems ◽

10.1007/s40747-021-00402-0 ◽

2021 ◽

Author(s):

Pei-Cheng Song ◽

Shu-Chuan Chu ◽

Jeng-Shyang Pan ◽

Hongmei Yang

Keyword(s):

Population Growth ◽

Path Dependence ◽

Optimization Problems ◽

Stick Insect ◽

Insect Population ◽

Engineering Optimization ◽

Population Evolution ◽

Evolution Path ◽

Evolution Characteristics ◽

Evolution Algorithm

AbstractThis work proposes a population evolution algorithm to deal with optimization problems based on the evolution characteristics of the Phasmatodea (stick insect) population, called the Phasmatodea population evolution algorithm (PPE). The PPE imitates the characteristics of convergent evolution, path dependence, population growth and competition in the evolution of the stick insect population in nature. The stick insect population tends to be the nearest dominant population in the evolution process, and the favorable evolution trend is more likely to be inherited by the next generation. This work combines population growth and competition models to achieve the above process. The implemented PPE has been tested and analyzed on 30 benchmark functions, and it has better performance than similar algorithms. This work uses several engineering optimization problems to test the algorithm and obtains good results.

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Monitoring water fluxes in rice plots under three different cultivation methods

Journal of Agricultural Engineering ◽

10.4081/jae.2013.403 ◽

2013 ◽

Vol 44 (2s) ◽

Author(s):

Enrico Antonio Chiaradia ◽

Daniele Ferrari ◽

Gian Battista Bischetti ◽

Arianna Facchi ◽

Olfa Gharsallah ◽

...

Keyword(s):

Management Practices ◽

Water Cycle ◽

Considerable Effect ◽

Level Gauge ◽

Total Production ◽

Water Fluxes ◽

Wireless Data ◽

Data Logger ◽

Groundwater Levels ◽

The North

Italy is the leading producer of rice in Europe with over half of total production, almost totally concentrated in a large traditional paddy rice area between the Lombardy and Piedmont regions, in the north-western part of the country. In this area irrigation of rice has been traditionally carried out by flooding. The introduction of new combined irrigation and agronomic management practices (dry seeding followed by field flooding and in a full aerobic cultivation with intermittent irrigations), aiming to reduce the water consumption, can determine considerable effect on the landscape and the water cycle. With the aim to study in depth the water fluxes during the whole crop season, three experimental plots at the Ente Nazionale Risi-Rice Research Centre’s Experimental Station of Castello d’Agogna (PV) were instrumented. In each plot the following instruments have been installed: 1) a long throated flume and a double shaped (V-notch and rectangular) thin plate for superficial inputs and outputs, 3) a set of piezometers for groundwater levels, 4) one stage level gauge in each submerged field, 5) four tensiometers and moisture sensors clusters, 6) one eddy covariance station for vapour fluxes estimation. Most of the instruments were equipped with electrical sensors connected by cables to a wireless data logger that, in turn, send the data to a PC placed within ENR offices and web-connected by a LAN. In this way, besides the automatic download of data, it was possible to remotely control the devices, to quickly fix troubles, and to better plan the field trips. The management of the whole framework was done by a specifically developed software. In this paper the whole system, which presents some degree of innovation, is described in detail.

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Equilibrium Temperature Calculation of the Sulfur Isotope in Dongzhongla Pb-Zn Deposit in Tibet

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1092-1093.1394 ◽

2015 ◽

Vol 1092-1093 ◽

pp. 1394-1397

Author(s):

Guang Chun Fei ◽

Yi Fan Yu ◽

Ke Qiang Hua

Keyword(s):

Sulfur Isotope ◽

Equilibrium Temperature ◽

Mining Area ◽

Isotopic Equilibrium ◽

The North ◽

Geological Conditions ◽

Typical Type ◽

Lead Zinc ◽

Block Based ◽

Exploration Area

The Dongzhongla Pb-Zn deposit, a newly-discovered medium-sized deposit, is located in the north margin of the eastern Gangdese, central Lhasa block. Based on the analysis of the ore-forming geological conditions in this deposit, sulfur isotope of this deposit were analyzed, and S isotopic equilibrium temperature of mineral pairs (sphalerite and galena) were calculated. This study has shown that the sulfur isotopic equilibrium temperature of sphalerite and galena in Dongzhongla Pb-Zn deposit ranged from 185℃ to 296℃. It indicated that the equilibrium temperature decreased gradually from the skarn stage to sulfide stage. The equilibrium temperature can be used as the reference of metallogenic temperature for Dongzhongla Pb-Zn deposit. DongzhongLa deposit is the typical type of skarn Lead-zinc deposit. East of the Dongzhongla mining area is the priority exploration area.

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Geochemical Characteristics and Prospecting Prediction of Sediment in Songwang Area, Bobai County, Guangxi

International Journal of Geology ◽

10.26789/ijg.2019.01.001 ◽

2019 ◽

Vol 4 (1) ◽

Author(s):

Wai Yi

Keyword(s):

Water System ◽

Mining Area ◽

Geochemical Characteristics ◽

Good Prospect ◽

Mining Areas ◽

Geological Characteristics ◽

Geochemical Anomalies ◽

Magmatic Rocks ◽

Prospecting Prediction

The characteristics of strata, structures, magmatic rocks, lithology and mineralization in Dongtao mining area (Songwang area) of Bobai County, Guangxi were summarized. According to the geochemical anomalies of sediment in water system, and the main anomalies are explained and evaluated, combined with the geological characteristics of Dongtao and other mining areas, the prospecting prediction of favorable areas is carried out, and it is considered that there is a good prospect of prospecting.

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Stress-Testing Framework for Urban Water Systems: A Source to Tap Approach for Stochastic Resilience Assessment

Water ◽

10.3390/w14020154 ◽

2022 ◽

Vol 14 (2) ◽

pp. 154

Author(s):

Dionysios Nikolopoulos ◽

Panagiotis Kossieris ◽

Ioannis Tsoukalas ◽

Christos Makropoulos

Keyword(s):

Water Distribution ◽

Stress Testing ◽

Water Cycle ◽

Water System ◽

Operating Conditions ◽

Distribution Model ◽

Generation Model ◽

Urban Water ◽

Testing Framework ◽

Urban Water System

Optimizing the design and operation of an Urban Water System (UWS) faces significant challenges over its lifespan to account for the uncertainties of important stressors that arise from population growth rates, climate change factors, or shifting demand patterns. The analysis of a UWS’s performance across interdependent subsystems benefits from a multi-model approach where different designs are tested against a variety of metrics and in different times scales for each subsystem. In this work, we present a stress-testing framework for UWSs that assesses the system’s resilience, i.e., the degree to which a UWS continues to perform under progressively increasing disturbance (deviation from normal operating conditions). The framework is underpinned by a modeling chain that covers the entire water cycle, in a source-to-tap manner, coupling a water resources management model, a hydraulic water distribution model, and a water demand generation model. An additional stochastic simulation module enables the representation and modeling of uncertainty throughout the water cycle. We demonstrate the framework by “stress-testing” a synthetic UWS case study with an ensemble of scenarios whose parameters are stochastically changing within the UWS simulation timeframe and quantify the uncertainty in the estimation of the system’s resilience.

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HA NOI – HUE – SAI GON IN TERRITORY EXPANSION TOWARD THE SOUTH AND UNIFICATION OF THE COUNTRY (1069–1802)

HUE UNIVERSITY JOURNAL OF SCIENCE SOCIAL SCIENCES AND HUMANITIES ◽

10.26459/hueunijssh.v129i6e.6058 ◽

2020 ◽

Vol 129 (6E) ◽

pp. 33-43

Author(s):

Nguyễn Quang Ngọc

Keyword(s):

Eighteenth Century ◽

Eleventh Century ◽

Development Trend ◽

Early History ◽

Mutual Support ◽

The South ◽

The North ◽

Starting Point ◽

Imperial Capital ◽

The Relationship

Vietnam is a country of an early history establishment with three archaeological centres: Dong Son in the North, Sa Huynh in the Central, and Oc Eo in the South. In the long history, these three centres unite and gather into a unified block, step by step, becoming a mainstream development trend. By the eleventh century, Thang Long capital (Hanoi) is a typical representative, the starting point for the course of advancement to the South of the Vietnamese. Later, Phu Xuan (Hue) from the fourteenth century and Gia Dinh (Saigon) from the seventeenth century directly multiply resources, deciding the success of the course of territory expansion and determining the southern territory of the nation Dai Viet – Vietnam in the middle of the eighteenth century. The Tay Son movement at the end of the eighteenth century starts unifying the country, but the course is not completed with numerous limitations. The mission of unifying the whole country is assigned back to Nguyen Anh. Nguyen Anh continually builds Gia Dinh into a firm basement for proceeding to conquer the imperial capital of Hue and the citadel Thang Long, completing the 733-year journey to expand the southern territory (1069–1802) and unifying the whole country into a single unit. Hanoi – Hue – Saigon in the relationship and mutual support has become the three pillars that determine all successes throughout the long history and in each stage of expansion and shaping of territory and unification of the country.

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Structural and Chemical Controllers of the North and Northwest of Torud Based on Involved Fluid Studies, Structural and Geochemical Analyses

Tehnički glasnik ◽

10.31803/tg-20201216121436 ◽

2021 ◽

Vol 15 (3) ◽

pp. 339-349

Author(s):

Fatemeh Baseri ◽

Arash Gourabjeri Pour ◽

Nima Nezafati

Keyword(s):

Volcanic Rocks ◽

Mining Area ◽

Hydrothermal Solutions ◽

Base Metals ◽

Laboratory Studies ◽

Scattered Space ◽

The North ◽

Geochemical Analyses ◽

Geochemical Studies ◽

Semnan Province

Chah Mura mining area in Semnan province is located 30 km southwest of Shahroud and 20 km north of Torud village with an area of 35 km2 and includes a part of 1:250,000 Torud plate. Structurally, this area is located in the northeastern part of Central Iran and in the center of the volcanic-intrusive arc of Torud-Chah Shirin. Rock units of the area are volcanic and pyroclastic, depending on the Eocene age. Exposed assemblages in the Chah Mura area, based on field and laboratory studies, can be divided into basalt, andesite, andesite-basalt, trachyandesite, trachyandesibasalt and small outcrops of pyroclastic units in the form of agglomerates and sediments of sandstone and conglomerate. Volcanic rocks are influenced by sub-volcanic masses younger than Eocene with an intermediate to basic composition, and their predominant textures are granular, porphyroid with microcrystalline to microintragranular background. Finally, the units are cut by dikes. In this area, mineralization is mainly in the control of sub-faults and subvolcanic massifs. Mineralization is in the form of vein-veinlet, filling empty and scattered space in the oxidation-supergen stage. Mineral sequences include pyrite, chalcopyrite, chalcocite, digenite and covellite, cuprite, tenorite, natural copper, malachite, azurite, and iron oxides and hydroxides. Geochemical studies indicate that copper does not correlate well with any of the base metals and depositing elements. Copper shows only a relative correlation with silver. Micrometric studies of fluid inclusions in samples from this area indicate dilution as a result of mixing hydrothermal solutions with atmospheric fluids in formation of this reserve.

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Air Conditioning System Water Quality and Equipment Condition Investigation and Analysis of Energy Saving Measures

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.516-517.1224 ◽

2012 ◽

Vol 516-517 ◽

pp. 1224-1228

Author(s):

Na Liang ◽

Rui Li

Keyword(s):

Energy Saving ◽

Air Conditioning ◽

Water System ◽

Building Energy ◽

Development Trend ◽

Air Conditioning System ◽

Effective Utilization ◽

Energy Saving Potential ◽

Central Air Conditioning ◽

Points Of View

Due to energy reserves reduces gradually and uneven distribution, all countries pay more and more attention to energy saving and improve the effective utilization of energy, China also attaches great important to this. Energy saving of buildings is a necessary development trend. Air conditioning system as a large important part of building energy consumption has a huge energy-saving potential. This article mainly introduced the related strategies of energy saving in central air conditioning water system from the following three points of view: the water treatment, the cooling tower, and the variable frequency pump.

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The Measurement of Water Bursting Volume of Jianfeng Mountain Tunnel and Treatment Techniques of Water Bursting

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.1335 ◽

2012 ◽

Vol 204-208 ◽

pp. 1335-1342

Author(s):

Jun Huang ◽

Guo Ming Li ◽

Bing Wang ◽

Hong Zhou Liu ◽

Rui Gang Song

Keyword(s):

High Speed ◽

Development Trend ◽

Water Inflow ◽

Treatment Techniques ◽

Design Changes ◽

Chongqing City ◽

Survey Results ◽

Large Water ◽

Water Bursting ◽

The Development Trend

The measurement of tunnel water inflow is not only an important basis for engineering design changes, but also an effective verification of design. This paper combines with the analysis of the measured data of groundwater of large water inflow section, which appeared in the construction of high-speed Jianfeng mountain super long tunnel in Fuling Fengdu, Chongqing city, and detailed information of hydrological survey results. This paper has re-evaluated the engineering geology and hydro-geological of large gushing sections to clear the reason of water inflow, the development trend characteristics of groundwater and stability of surrounding rock. It is shown in this paper that the measures such as strengthening the support parameters, optimizing the waterproof and drainaging design schemes, and other measures can be adopted to ensure the safety of tunnel construction and effectively realize the concept of dynamic construction.

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