Assessing the Geological Stability, Dam Construction Effects, and Ecological Status of Karst Water Areas, Guizhou Province, China

2018 ◽  
pp. 251-269
Author(s):  
Weiwei Yao ◽  
Tongtong Zhao ◽  
Lei Shen ◽  
Yuansheng Chen
Keyword(s):  
Ecological Status ◽  
Guizhou Province ◽  
Karst Water ◽  
Dam Construction

scholarly journals Water Inrush Hazards in the Chaoyang Tunnel, Guizhou, China: A Preliminary Investigation

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1083 ◽  
Author(s):  
Nan Zhang ◽  
Qian Zheng ◽  
Khalid Elbaz ◽  
Ye-Shuang Xu
Keyword(s):  
Preliminary Investigation ◽  
Water Inrush ◽  
Water System ◽  
Control Measures ◽  
Guizhou Province ◽  
Karst Water ◽  
Geological Condition ◽  
Underground Engineering ◽  
Management Measures ◽  
Self Protection

This paper reports on a water inrush hazard, which occurred during the construction of the Chaoyang tunnel in Libo County, Guizhou Province, China. On 10 June 2018, a continuous water inflow of about 57 thousand m3 of water within 40 min took place at the tunnel excavation face, resulting in three casualties. The objectives of this study are to investigate and discuss the water inrush process of this atypical case. Further, an inclusive description of the implemented emergency responses will be provided. The principal causes of this tunneling incident include the karst geological condition at the construction field, hydraulic conductivity induced by the connection between karst water system and surface water body, and effects of excavation and precipitation. Moreover, based on a preliminary investigation and analysis, three main control measures to overcome similar incidents in the future are proposed: (1) Performing “water inrush risk grading” in areas prone to water inrush; (2) undertaking comprehensive geological forecast for a synthetic analysis; and (3) employing a monitoring system during the construction, and educating workers on self-protection skills. These effective management measures are bound to benefit underground engineering constructions with regard to water inrush risks.

scholarly journals Empirical Study of the Coupling Relationship Between Biodiversity and Environmental Geology Under Different Ecological Status: Evidence From Five Typical Areas in Guizhou, China

2021 ◽  
Author(s):  
Yuangui Xie ◽  
Lanyue Zhang ◽  
Xinxiang Gong ◽  
Jiming Liu ◽  
Xiaofeng Liao ◽  
...  
Keyword(s):  
Human Activities ◽  
Ecological Status ◽  
Guizhou Province ◽  
Ecological Environment ◽  
Environmental Geology ◽  
Coordinated Development ◽  
Factors Affecting ◽  
Coupling Relationship ◽  
Synchronous Development ◽  
Coordination Degree

Abstract Analyzing the coupling relationship between biodiversity and environmental geology and exploring the factors affecting the coupling degree are of vital significance for the protection and restoration of the ecological environment. In this study, we selected five typical areas (i.e., Caohai, Chishui, Fanjingshan, Maolan, and Guanshanhu) to represent the whole Guizhou Province, China. Based on the coupling coordination degree model, we analyzed their coupling coordination trend. The results showed that the coordinated development stages of the Chishui and Fanjingshan areas both could be categorized as the synchronous development type of primary coordination because of their excellent nature conditions; the Maolan area was categorized as having restrained environmental geology because of its weak environmental geology condition; and the Guanshanhu and Weining areas were strongly affected by human activities, and both could be categorized as having restrained biodiversity. In combination with practical situation, Guizhou province can be categorized into the following three zones: an original ecological zone, a zone with fragile ecological environment, and a zone affected by human activities. Biodiversity conservation measures should be proposed according to the specific ecological situation of these different zones. In this way, the harmonious coexistence of economic development and the ecological environment can be realized.

Karst Water in Zhenfeng Mountainous Area of Guizhou Province and Experience in Water Exploration

2012 ◽  
Vol 550-553 ◽  
pp. 2533-2536
Author(s):  
Fu Li Qi ◽  
Yong Li Li ◽  
Feng Long Zhang ◽  
Yu Chun Bai
Keyword(s):  
Natural Resources ◽  
Geophysical Methods ◽  
Water Shortage ◽  
Pumping Test ◽  
Field Investigation ◽  
Groundwater Exploration ◽  
Comprehensive Analysis ◽  
Guizhou Province ◽  
Mountainous Area ◽  
Karst Water

Following the projects of groundwater exploration in Southwest areas of serious water shortage issued by Ministry of Land and Natural Resources in 2009, water exploration was carried out on the basis of comprehensive analysis and study of geology and hydrogeology in this area. Field investigation was conducted, and according to the landforms feature and stratum outcrop, key project spots were determined, combining with the geophysical methods to confirm the development of water-rich belt, optimize the location of holes and design the depth of holes, carry out hydrogeological drilling and pumping test for steady flow. This paper took drought-resistance wells in Zhenfeng County of Guizhou Province as successful typical examples of finding water, and briefly introduced the main methods, technical routes adopted in the water exploration and the results achieved.

scholarly journals Identification of Hydrochemical Function and Behavior of the Houzhai Karst Basin, Guizhou Province, Southwestern China

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Xian Li ◽  
Yanqiao Wang
Keyword(s):  
Storage Capacity ◽  
Gaussian Mixture ◽  
Guizhou Province ◽  
Southwestern China ◽  
Fracture Flow ◽  
Karst Water ◽  
Water Conductivity ◽  
Relative Contribution ◽  
And Behavior ◽  
Downstream Area

Due to the difference of geomorphology and the development of fractures, the hydrochemical function and behavior appear to be complex. Variations of karst water conductivity can reflect the contribution of different runoff sources and thus indirectly reflect the development characteristics of conduits and fractures. Taking Houzhai karst system (southwestern China) as a case study, the frequency distribution curves of karst water conductivity were decomposed by Gaussian Mixture Analysis to identify the runoff components of different karst landform. The dominant runoff types had been distinguished, and the relative contribution of the different water types had been investigated. The results showed that the karst flow types were slope flow, rapid fracture flow, and slow fracture flow. Rapid fracture flow was the major recharge type of Houzhai karst water system. Slow fracture flow in the downstream area accounted for a larger proportion than that of the upstream area. The relative contribution of the different runoff components showed that the upstream area was a rapid flow area of conduit structure with low storage capacity, the downstream area was an aquifer spatial structure of netted fissure conduit with high storage capacity, and the midstream area was a transitional zone between the upstream and downstream area.

New Method of Dam Construction

1903 ◽  
Vol 55 (1413supp) ◽  
pp. 22648-22648
Author(s):  
J. Francis Le Baron
Keyword(s):  
New Method ◽  
Dam Construction

IDENTIFYING THE MOST SUITABLE AREAS FOR SURFACE FLOW WETLAND CONSTRUCTION IN LITHUANIA

2015 ◽  
Author(s):  
Antanas DUMBRAUSKAS ◽  
Nijolė BASTIENĖ ◽  
Petras PUNYS
Keyword(s):  
Constructed Wetlands ◽  
Ecological Status ◽  
Surface Flow ◽  
Gis Analysis ◽  
Proximity Analysis ◽  
Wetland Construction ◽  
The Mean ◽  
Two Phases ◽  
Terrain Features ◽  
Surface Flow Constructed Wetlands

GIS-based approach to find the suitable sites for surface flow constructed wetlands was employed for the Lithuanian river basins with low ecological status. According to the nature of the analysed criteria the flowchart consists of two phases. Criteria used include hydrographical network, soil properties, terrain features, land use, etc. Some of them have strictly defined values (constraints), and other ranges within certain limits (factors). Limited criteria were analysed using rejection principle and influencing factors using proximity analysis and overlay methods. Selecting the potential sites using standard GIS analysis tools there was estimated about 3286 sites for possible wetlands with the mean area of inflow basin about 4 km2 in the basins of water bodies at risk.

Sign in / Sign up

Export Citation Format

Share Document