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Geotechnical and Geological Engineering OnlineFirst articles

13.09.2021 | Original Paper

Experimental Investigation of Early-Warning Critical Energy for Strainbursts

This research aimed to establish an early-warning critical energy for coal instability based on the energy theory and acoustic emission characteristics of coal under triaxial compression. To obtain an early-warning critical strain energy …

Autoren:
Wang Ling, Yan ruyu, Zhang zhi, Huang chunhui, Xie Lei

08.09.2021 | Original Paper Open Access

Research on Roof Fracture Characteristics of Gob-Side Entry Retaining with Roof Cutting and Non-pillar Mining in Thick Coal Seam, China

Based on the S1201-2 large height mining in the 2–2 coal seam of Ningtiaota colliery with on-site microseismic measurement, physical simulation and theoretical analysis methods, this paper explores the rule of roof movement in thick coal seams …

Autoren:
Mengye Zhao, Lei Zhu, Qingxiang Huang, Kai Xu, Yuyi Wu, Wenzhe Gu

08.09.2021 | Original Paper

Prediction of TBM Penetration Rate Using Fuzzy Logic, Particle Swarm Optimization and Harmony Search Algorithm

Tunnel Boring Machine (TBM) penetration rate prediction is one of the most important problem in tunneling projects. Estimating of Tunnel Boring Machine (TBM) penetration rate can considerably reduce the costs of tunneling projects. In this study …

Autoren:
Alireza Afradi, Arash Ebrahimabadi, Tahereh Hallajian

02.09.2021 | Original Paper

Analysis of Deformation of Adjacent Buried Pipeline Under Rockfall Impact Load

The current research on the deformation of buried pipeline under rockfall impact load is generally based on the analysis of the pipeline cross-sectional deformation, and the deformation caused by lateral deflection of pipeline is less considered.

Autoren:
Pingping Rao, Zhilin Wu, Jifei Cui

01.09.2021 | Original Paper

A New SPT-Based Method for Estimating Axial Capacity of Driven Piles in Glacial Deposits

This paper proposes a new design method for the axial capacity of driven piles in glacial deposits with the standard penetration test (SPT) based on a database of 53 full-scale pile load tests. These static load tests were conducted on driven …

Autoren:
Markus Jesswein, Jinyuan Liu

29.08.2021 | Original Paper

FEA of Urban Rock Tunnels Under Impact Loading at Targeted Velocity

This paper presents the effect of impact load and weathering of surrounding rockmass on the deformation behavior of urban underground structures. The FEM based numerical simulation is carried out by varying overburden depths, impact energy, and …

Autoren:
Swapnil Mishra, Mohammad Zaid, K. S. Rao, N. K. Gupta

28.08.2021 | Original Paper

Primary and Secondary Compression of a Colombian Volcanic Ash Soil

Understanding the compression behavior of volcanic ash soils is essential in the assessment of settlements in such materials. A series of one-dimensional and isotropic compression tests were carried out to investigate the primary and secondary …

Autoren:
Ayda Catalina Galvis-Castro, Julio E. Colmenares, Juan C. Garcia-Leal

28.08.2021 | Original Paper

Stability Analysis of Slope Considering the Energy Evolution of Locked Segment

Researches on the energy evolution of the key blocks is helpful to reveal the failure process of locked-segment type slope, whose stability is governed by the locked segment along the potential slip surface. In order to study the failure mechanism …

Autoren:
Xiangjie Yin, Hang Lin, Yifan Chen, Yi Tang, Yixian Wang, Yanlin Zhao, Weixun Yong

26.08.2021 | Original Paper

Study on Deformation Failure Mechanism and Control Technology of Surrounding Rock in Soft Rock Roadway

In order to reveal the mechanism of surrounding rock deformation and instability of soft rock roadway in 12# working face of Puhe coal mine, and synthetical analysis of the surrounding rock, deformation and failure of the roadway shows that the …

Autoren:
Xiangqian Wang, Yingming Li, Chengxing Zhao, Yi Wang, Shunjie Huang

26.08.2021 | Original Paper

Frack Evolution and Destruction Characteristics of Mining Bottom Plate on Pressurized Water Based on Similar Simulation

The occurrences of breakage and water inrush disasters of working face floor under mining above aquifer are increasing with the mining depth in China. Taking the working face floor above in some Mine as the research object, by theoretical analysis …

Autor:
Xiaolei Wang

26.08.2021 | Technical Note

Investigation of Soil Suction Characteristics Induced by the Degradation of Organic Matter

Total soil suction is considered to be the accumulative influence of matric and osmotic suction, assuming that the soil is biologically inert. However, there are several biological activities occurring in soil media, which result in the …

Autoren:
Anant Aishwarya Dubey, Annesh Borthakur, K. Ravi

25.08.2021 | Original Paper

Construction of Structural Geological Model Using Monte Carlo Simulation

To optimize the prediction of structural geological conditions in the underground as of data collected at the surface, due to the usual great uncertainties involved, we discuss new perspectives for the construction of structural geological models …

Autoren:
Bruna Catarino Xavier, Marcos Egydio-Silva, Georg Robert Sadowski, Bruno de Assis Silva, Victor Junji Takara

25.08.2021 | Original Paper

An Exploratory Investigation into Image-Data-Driven Deep Learning for Stability Analysis of Geosystems

This study investigates image-data-driven deep learning in the stability analysis of geosystems. For the purpose, the recent breakthrough in computer vision represented by the Convolutional Neural Network (CNN), which was later used as a core …

Autoren:
Zhen Liu, Shiyan Hu, Ye Sun, Behnam Azmoon

25.08.2021 | Original Paper

Deformation Movement of Hugely-Thick Conglomerate Stratum in Longwall Top Coal Caving

In the process of longwall top coal caving, the deformation and movement of the overlying hugely-thick conglomerate stratum (HTCS) directly affects the rock pressure behavior in the longwall. Based on conditions of the geology and mining of coal …

Autoren:
Xinxian Zhai, Xiaofan Zhao, Yanwei Zhai, Qinyu Liu, Leqian Sun

23.08.2021 | Original Paper

Detecting Goaf Ahead of the Mine Tunnel Using SAP: A Case Study in Iron Mine, China

Estimating the goafs ahead of iron mine in advance is essential to ensure the safety of mining. Xishimen Iron Mine is located at Hebei Province, China, which faces high risk of collapse due to the goafs. To understand the geological conditions …

Autoren:
Lei Hao, Ningbo Li, Xinji Xu, Qingsong Zhang, Lei Chen, Fahe Sun

22.08.2021 | Technical Note

Hydrofracturing in situ stress measurements of itabirite in the Brazilian Ferriferous Quadrangle and their limitations

This article presents a first attempt to carry out in situ stress measurements (magnitudes and orientations) of the itabirite in the Brazilian Ferriferous Quadrangle by hydraulic fracture testing at a depth of 399 m. Previous studies on this rock …

Autoren:
Henrique de Andrade Penido, Rodrigo Peluci de Figueiredo, André Pacheco de Assis, Vidal Félix Navarro Torres, Juan Manuel Girao Sotomayor, Alessandro Guimarães

22.08.2021 | Original Paper

Study on Deformation and Supporting Measures of Mining Roadway with Compound Roof

The No. 3 coal seam is one of the primary mineable coal seams in Du’erping coal mine of Shanxi Coking Coal Group Co., Ltd. The direct roof of No. 3 coal seam is a compound roof with two layers of 0.3–0.5 m extremely soft coal seams in the unstable …

Autoren:
Hongjuan Dong, Jinshan Zhang, Feng Zhang

21.08.2021 | Original Paper

Experimental study on bursting liability index of coal considering creep pre-damage

In order to explore the influence of creep pre-damage on bursting liability of coal and rock, the creep pre-damage treatment of coal with different stress levels (0%, 30%, 45%, and 60%) was carried out, and the bursting liability index test was …

Autoren:
Weizhen Liu, HuaQing Yang

15.08.2021 | Original Paper

Influence of Grout’s Poisson Effect on Interfacial Shear Stress for Compression Anchor in Rock Mass

The distribution and magnitude of the shear stress at the interface between the grout of a compression anchor rod and rock are strongly affected by the Poisson effect. A new analytical equation of the influence coefficient of the Poisson effect is …

Autoren:
Bingxiong Tu, Chao Liu, Lihua Zhang, Haitao Wang

14.08.2021 | Original Paper

Biofilm Formation and Effectiveness of Biosand Filtration Systems with Typical and Innovative Filter Media

Clean drinking water is a necessity and recycling stormwater and greywater has been more appealing in the recent decades to provide filtered water for drinking water and non-drinking water purposes. Biosand filters have been a popular filtering …

Autoren:
Derek Emslie, Sumi Siddiqua, Bryn Crawford, Wayne Teece