Showing papers in "Engineering Geology in 2017"

TL;DR: In this paper, a case study of the failure mechanisms and stability control technology of deep roadway with soft rock mass in Xin'an coal mine in Gansu Province, China is described.

TL;DR: In this article, the effect of increasing temperature (from room temperature to 800 °C) followed by two cooling methods (both rapid and slow) on the mechanical behavior of Australian Strathbogie granite under uniaxial conditions was investigated.

TL;DR: In this article, the authors present the results of an experimental investigation of small particle migration from granular sandstone samples under different original porosities, particle size compositions and water flow pressures.

TL;DR: A multivariate chaotic ELM model is proposed for the prediction of the displacement of reservoir landslides in China and it is shown that the model achieves higher prediction accuracy than the univariate chaoticELM model and the multivariate chaos PSO-SVM model.

TL;DR: In this article, the relationship of cracks development to porosity changing characteristics was introduced to quantitatively determine the height of the local gas conducting fracture zone (GFZ) in No. 7435 Face overlying strata of Kongzhuang Coal Mine, China.

TL;DR: In this paper, the energy evolution characteristics of fine-to-medium-grained granite specimens from a quarry in Miluo city (China) were studied in the triaxial deformation and failure process of the rocks.

TL;DR: In this article, Wang et al. found that 79% of the landslides are shallower than 10m, 85% have a volume of less than 100,000m3, and the equivalent coefficient of friction of loess landslides is very low resulting in long run-out with a low angle sliding surface.

TL;DR: In this paper, the authors present the results of an InSAR time series analysis obtained by the exploitation of Envisat, ALOS and Sentinel-1 (S1) SAR data archives between June 2004, and May 2016, to investigate land subsidence in the plain of southeastern Iran.

TL;DR: In this paper, a micro-mechanical based numerical manifold method (NMM) is proposed to investigate the micromechanisms underlying rock macroscopic response and fracture processes.

TL;DR: In this article, a dual-horizon peridynamics (DH-PD) formulation for fracture in granular and rock-like materials is presented, which does not require any representation of the crack surface and criteria to treat complex fracture patterns such as crack branching and coalescence.

TL;DR: The self-organizing-map (SOM) network-based extreme learning machine (ELM) model is proposed to calculate the landslide susceptibility indexes and it is concluded that the SOM-ELM model possesses higher success and prediction rates than the single ELM and SOM-SVM models.

TL;DR: In this article, the effect of wetting and drying cycles on the physical and dynamic compressive properties of sandstone specimens including density, water absorption, porosity, P-wave velocity and slake durability index (SDI) were measured after every 10 cycles.

TL;DR: In this article, a series of uniaxial compression tests on red sandstone specimens containing two pre-existing oval flaws was carried out using a rock mechanics servo-controlled testing system.

TL;DR: Wang et al. as discussed by the authors showed that the water saturation degree in the landslide depression was relatively high and the leading edge was in a flow state; there were some local natural sub-areas, but the overall area showed a characteristic fluidized.

TL;DR: In this article, a coal mining induced landslide at Nattai North, Australia, is investigated as a typical case study, where the authors use numerical modeling to analyze the impact of underground mining on the stability of slopes.

TL;DR: In this article, the effects of various strain rates on the fracture toughness as well as the energy-release rate of gas shales were investigated using three-point bending method was applied using notched semicircular bending shale specimens that were prepared as per the international standards.

TL;DR: In this article, the macroscopic mechanical properties of granite collected from the Fujian Province, China were measured using uniaxial compression and three-point bending after the granite was exposed to high temperatures.

TL;DR: In this paper, a new type of integrated PVDs (NPVDs), in which the filter is adhered to the core by heat melting to form an integrated body, was tested.

TL;DR: In this paper, the influence of cyclic mining stress on gas-containing coal seams during mining, the seepage properties, acoustic emission (AE) characteristics and energy dissipation of coal under tiered cyclic loading were experimentally investigated.

TL;DR: Based on the Split Hopkinson Pressure Bar (SHPB) system, dynamic compressive tests were done on red-sandstone specimens, which were free from freeze-thaw (F-T) or suffered from 5, 10, 15, 25 F-T cycles.

TL;DR: In this article, the authors analyzed the distribution and failure mode of 69 landslides in Heitai terrace and the preliminary results of groundwater recharge and formation of the apparent spring lines on the slope surface are analyzed to better understand the failure modes.

TL;DR: In this article, the results from an intensive experimental investigation on a loess that was retrieved from a typical silty loess zone in the northwestern Chinese Loess Plateau are presented and interpreted.

TL;DR: In this article, the role of long-term saturation and pore fluid chemistry changes has not been investigated systematically, but the authors reported on an experimental study on loess samples from Heitai loess terrace (Yongjing, Gansu) carried out through chemical analyses, oedometer and ring shear tests.

TL;DR: In this paper, the authors revisited the problem of computational modeling of a fluid-driven fracture propagating in a permeable porous medium using zero-thickness flow cohesive interface elements.

TL;DR: In this paper, the authors investigated the typical slope deformation behavior and defined the appropriate strategy for the setup of alarms in open-pit mines, and provided critical insights into the deformation of hard rock masses of high geomechanical quality.

TL;DR: Zhang et al. as discussed by the authors performed a series of undrained ring shear tests to examine the undrained shear behaviors of these samples at differing initial void ratios, and concluded that irrigation-induced densification may have affected the occurrence and mobility of landslides occurring on the terrace margin of the Heifangtai area.

TL;DR: In this paper, a combination of vacuum preloading and lime treatment is proposed to address the issue of clogging around the prefabricated vertical drains (PVDs), where a certain percentage of hydrated lime (Ca(OH) 2 ) is added into the dredge fill slurry to enhance the engineering properties of the fill, such as the shear strength and permeability.

TL;DR: In this article, the failure of a highway slope located in Fort Worth, Texas was investigated, and the effect of rainfall on the slope failure was evaluated using soil test borings, geophysical testing, laboratory testing, slope stability analysis, and unsaturated flow analysis.

TL;DR: In this article, the tensile and shear strength of the Malan Loess is investigated and a review of these properties based on a large collection of literature is presented. But the authors focus on the failure mode of the Loess Plateau.

TL;DR: In this article, the authors analyzed the characteristics of slope retreat and the failure mechanism of the loess flowslides on the Heifangtai terrace in northwestern China, where a large number of landslides was induced by agricultural irrigation on the terrace, resulted in slope retreat at the edge at an estimated rate of 0.024 km 2 ǫ − 1.