Data field application in removing large P-phase arrival picking errors and relocating a mine microseismic event

Peng, Kang; Guo, Hongyang; Shang, Xueyi

doi:10.1016/j.soildyn.2020.106359

Cited by 12 publications

(4 citation statements)

References 32 publications

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“…It can be seen from Figure 8 that when the discharge voltage is 11 kV and the hydrostatic pressure is 1 MPa, three intermittent cracks occur in the coal slice scanning section; when the hydrostatic pressure is 4 MPa, the crack penetrates to form the main crack, and its roughness and opening degree increase. Many short and irregular cracks occur around the main crack; when the hydrostatic pressure is 6 MPa, the main crack branches, and its length, opening 12 Geofluids degree, and roughness further increase; when the pressure is increased to 8 MPa, three main cracks are generated. One has a long length, and another one has a large opening degree.…”

Section: Analysis Of Ct Test Resultsmentioning

confidence: 99%

“…This means that the artificial methods for the structural transformation of the coal-rock reservoir layer, the increase of crack extension range, the weakening of coal-rock strength, and the improvement of permeability are effective ways to improve the extraction efficiency. Among them, hydraulic fracturing is not only used for testing seismic sources [12,13] but also has been widely used in the development and exploitation of low-permeability oil and gas fields as a major measure to increase production in oil and gas wells. Zhong et al [14] proposed that the stimulation of hydraulic fracturing on a combination of depressurization with thermal stimulation for natural gas hydrate (NGH) exploitation from challenging ocean hydrate reservoirs is investigated in this study.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Damage Model of Coal Rock Caused by Hydraulic Pressure and Electrical Impulse in Borehole

et al. 2021

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The purpose of this study is to study the damage and fracturing effects of high-voltage discharge on coal-rock mass under the action of hydrostatic pressure. Based on the traditional damage evolution model and the change of the effective bearing area and stress around the microcrack of coal-rock mass on a microscopic scale, the expression of macroscopic damage variation of coal-rock mass under the action of electrohydraulic coupling was derived, and its damage constitutive relation was established. The high-voltage pulse water shock stress test of coal-rock mass under the conditions of different water pressures and voltages was carried out, and its damage numerical model was established by the ABAQUS/XFEM. The damage variable values of coal-rock mass with different electrohydraulic parameters were compared to characterize the generation and expansion of internal macroscopic cracks. From the results, it is shown that the damage variable based on the effective bearing area and stress around the crack can represent the morphology and expansion change of crack of coal-rock mass with different electrohydraulic parameters clearly and quantitatively. Different hydrostatic pressures and discharge voltages have influence on the damage variables of coal-rock mass, but different influencing degrees cause different damages on coal-rock mass. The damage of coal rock can be characterized by the change of the effective bearing area and stress around microcracks in coal body. So, stress testing and numerical simulation have verified the correctness of the damage model.

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Section: Analysis Of Ct Test Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on the Damage Model of Coal Rock Caused by Hydraulic Pressure and Electrical Impulse in Borehole

et al. 2021

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“…Restriction (7) defines the total area of the packing zone; the shape of the area is left to the decision maker's discretion. However, if the pallets are left side by side and have a width of 1m and a depth of 1:2m (American pallet measure), the length and width are defined by equations ( 15) and ( 16), respectively, where 1:22 is the width of the corridor in meters.…”

Section: Assumptionsmentioning

confidence: 99%

“…Peng et al 7 propose the method of nested partitions to solve problems of global optimization; this method systematically divides the feasible regions and intensifies the search in promising regions. The diversity of the stock unit (SKU) in the warehouse and the product request volume can be factors that affect the storage system.…”

Section: Introductionmentioning

confidence: 99%

Optimal placement design for picking and packing in distribution centers

Ríos

Linfati

Morillo-Torres

et al. 2021

Advances in Mechanical Engineering

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An efficient distribution center (DC) is one that receives, stores, picks and packs products into new logistics units and then dispatches them to points of sale at the minimal operating cost. The picking and packing processes represent the highest operating cost of a DC, and both require a suitable space for their operation. An effective coordination between these zones prevents bottlenecks and has a direct impact on the DC’s operational results. In the existing literature, there are no studies that optimize the distribution of the picking and packing areas simultaneously while also reducing operating costs. This article proposes an integer nonlinear integer programming model that minimizes order preparation costs. It does so by predicting customer demand based on historical data and defining the ideal area for picking and packing activities. The model is validated through a real case study of seven clients and fifteen products. It achieves a [Formula: see text] reduction in operating costs when the optimal allocation of the picking and packing areas is made.

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Microseismic source location using the Log-Cosh function and distant sensor-removed P-wave arrival data

Peng

Guo

Shang

2022

J. Cent. South Univ.

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Data field application in removing large P-phase arrival picking errors and relocating a mine microseismic event

Cited by 12 publications

References 32 publications

Study on the Damage Model of Coal Rock Caused by Hydraulic Pressure and Electrical Impulse in Borehole

Study on the Damage Model of Coal Rock Caused by Hydraulic Pressure and Electrical Impulse in Borehole

Optimal placement design for picking and packing in distribution centers

Microseismic source location using the Log-Cosh function and distant sensor-removed P-wave arrival data

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