Prediction Model for Safe Width of Rock Mass Preventing Water Inrush from Fault in Excavation Roadway and Influencing Factors Analysis: a Case Study of the Xintian Coal Mine

Li, Bo; Liu, Zijie; Wu, Qiang; Long, Jie; Liu, Pu; Li, Menghua

doi:10.1007/s42461-023-00806-1

Cited by 6 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fault distribution: The rock body in the fault distribution area is broken and has low mechanical strength [17,18]. Under the action of mining disturbance and water pressure, it is easy to connect the ore body and the overlying karst aquifer, thus causing sudden water disasters.…”

Section: Indicator Determinationmentioning

confidence: 99%

Water-Richness Zoning Technology of Karst Aquifers at in the Roofs of Deep Phosphate Mines Based on Random Forest Model

Li,

Luo

et al. 2023

Sustainability

View full text Add to dashboard Cite

The development of fractures and conduits in karst aquifers and the strength of their water richness are key factors in determining whether a water intrusion will occur in a mine. In the phosphorus mining process, if the mining of water-rich areas is carried out, sudden water disasters can easily occur. Therefore, water-richness zoning of the karst aquifer on the roof of the phosphate mine is very important to protect against the incidence of water disasters in the mine. This paper proposes a random-forest-based partitioning model of the water richness of phosphate mine roofs in karst areas based on the random forest intelligence algorithm in machine learning. Taking a productive phosphate mine in southern China as a typical case, seven main assessment indicators affecting the water richness of the phosphate mine roof aquifer were determined. The proposed random forest model was utilized to determine the weight of each evaluation index, and the water richness of the karst aquifer on the roof of this phosphate mine was studied by zoning. The whole structure of the mine is highly water-rich, with strongly water-rich areas mainly concentrated in the central and northeastern part of the mine. The water-richness fitting rates (WFP) introduced for validation were all in agreement with the evaluation results, and the constructed model met the accuracy requirements. The study’s findings can serve as a guide for mine design and water-disaster warnings in karst regions.

show abstract

Section: Indicator Determinationmentioning

confidence: 99%

Water-Richness Zoning Technology of Karst Aquifers at in the Roofs of Deep Phosphate Mines Based on Random Forest Model

Li,

Luo

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…The results indicate that this evaluation index possesses significant engineering practicality. Li et al [37] utilized a numerical simulation approach, exemplified by the Xintian Coal Mine in Guizhou, to examine the process of roadway water inrush during roadway excavation. Their findings suggest that the primary factors influencing the safety thickness of water inrush are rock mass grade, depth of roadway, and pressure of fault water.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behaviors and Structure Safety of a Tunnel Crossing a Water-Rich Fault Fracture Zone—A Case Study

Chen,

Deng,

Yang

et al. 2024

Buildings

View full text Add to dashboard Cite

To study the potential disasters caused by tunnels crossing water-abundant fault areas, this study takes the Jinyunshan Tunnel as an example, and studies the groundwater flow law between different rock layers, the interaction between surrounding rock hydrostatic pressure and soil pressure, and the mechanical features and safety of the lining during construction by combining field tests and finite element simulation analysis. The results show that the displacement change rate of the tunnel vault reaches 2.8 mm/d, and the maximum earth pressure and hydrostatic pressure are 2.3 MPa and 1.15 MPa, respectively, both at the bottom of the tunnel in section II. When the tunnel enters the fault fracture zone from the V surrounding rock, the bending moment of the lining increases by 222.78% at the left haunch and 60.87% at the bottom of the right wall. The axial force of the right spandrel increases by 2579.2%, and the left spandrel increases by 221.18%. The safety factor of the two sections is greater than 2.4, indicating that the overall structure is in a safe state, but the safety factor of the second right shoulder is 2.54, which is close to the safety threshold of 2.4. The research results provide a basis for the safety design and construction safety of tunnels through water-rich sections in similar fault fracture zones, and provide a reference for reducing groundwater loss and protecting ecological vegetation.

show abstract

“…A large-scale underground karstic network formed by the karst process provides excellent space for the storage and runoff of karst water, which makes the karst groundwater resources in this area extremely rich [1][2][3][4]. Therefore, karst groundwater is a significant and important water supply [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Study on the Hydrogeological Structure of a Karst Subterranean River and Seepage of a Karst Reservoir: A Case Study of the Yibasan Reservoir in Yunnan Province, China

Zhang,

Pan,

Liang

et al. 2023

Water

View full text Add to dashboard Cite

Karst groundwater resources are rich, and they have important water supply significance. A karst reservoir is a means of exploiting and utilizing groundwater resources, but because of the complex hydrogeological structure and underground river pipeline in a karst area, the seepage problem of the reservoir is extremely serious. Therefore, the Yibasan Karst Reservoir (YKR) was selected as the focus of this study. The hydrogeological structure of the subterranean river system of Yutang (SRSY) was identified and the hydraulic connections between the subterranean river conduits were determined using tracer experiment and groundwater dynamic monitoring. Furthermore, the development location and depth of the karst seepage zone of the YKR were determined using geophysical exploration. The results showed that there were three subterranean river conduits in the SRSY, and there was no hydraulic connection. The northern and southern pressure and torsion faults on the sides constitute the impervious boundary of the SRSY, which provided good catchment conditions for the formation of the YKR. Additionally, the northern and main conduits of the SRSY provide a sufficient groundwater source for the YKR. Moreover, the development width of the karst seepage zone of the YKR ranges between 40 and 60 m, and the elevation ranges between 1275 and 1355 m. The research results not only provide an effective basis for the treatment of the karst seepage problem of the YKR but also provide an important reference for the development and utilization of groundwater resources in similar karst areas.

show abstract

Prediction Model for Safe Width of Rock Mass Preventing Water Inrush from Fault in Excavation Roadway and Influencing Factors Analysis: a Case Study of the Xintian Coal Mine

Cited by 6 publications

References 26 publications

Water-Richness Zoning Technology of Karst Aquifers at in the Roofs of Deep Phosphate Mines Based on Random Forest Model

Water-Richness Zoning Technology of Karst Aquifers at in the Roofs of Deep Phosphate Mines Based on Random Forest Model

Mechanical Behaviors and Structure Safety of a Tunnel Crossing a Water-Rich Fault Fracture Zone—A Case Study

Study on the Hydrogeological Structure of a Karst Subterranean River and Seepage of a Karst Reservoir: A Case Study of the Yibasan Reservoir in Yunnan Province, China

Contact Info

Product

Resources

About