Results 11 to 20 of about 2,491 (188)
Research on pressure relief scope of hydraulic flushing bore hole
Procedia Engineering, 2011 AbstractMethods based on flow measurement and pressure measurement were employed in this paper to determine pressure relief scope of gas drainage boreholes for coal and gas outburst prevention and control. In order to measure the extent of pressure relief, the principle to choose proper sites was set up based on general gas geology features.
Bo, Li +4 more
exaly +2 more sources
Numerical investigation of bed-load changes on sediment flushing cavity [PDF]
Journal of Hydraulic Structures, 2023 The tanks' useful life will be reduced if their sediments are not discharged with a suitable method. Various hydraulic and mechanical methods can be used in many countries to discharge sediments from reservoirs.
Reza Nematzadeh +2 more
doaj +1 more source
Meitian dizhi yu kantanObjectiveGiven the inaccurate and low-efficiency manual statistics of the quantity of coals flushed out during borehole hydraulic flushing, this study proposed an intelligent identification method that combines YOLOv8n, ResNet34, and PP-OCRv4 algorithms.
Xiaojun LI, Mingyang ZHAO, Miao LI
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The method of hydraulic flushing calculation of the reservoir of the "Indian type" hydrosystem [PDF]
E3S Web of Conferences, 2021 One of the main problems in the operation of hydrosystems for various purposes is the silting up of the reservoir. Silting up of a reservoir leads to a decrease in useful capacity. And, of course, the hydrosystem's facility will not be able to fully perform its functions. This issue is particularly relevant for territories located in the arid zone with
Kan Eduard +2 more
openaire +2 more sources
Removal of hydrocarbons from heterogenous soil using electrokinetics and surfactants
Environmental Challenges, 2021 Removal of hydrocarbons from sediments could be achieved using various techniques such as hydraulic flushing aided by surfactants, which works well for sand and gravel but not as effective for finer textured media, such as clay.
Meghana Parameswarappa Jayalakshmamma +7 more
doaj +1 more source
Pressure relief law and application of deep-buried high-stress bedding coal by hydraulic flushing
Gong-kuang zidonghua, 2022 In order to solve the problem of the high risk of coal and gas outburst in deep coal working face, taking 12090 working face of Shoushan No.1 Coal Mine as the engineering background, the paper analyzes the deformation and stress variation law of coal ...
ZHANG Jianguo, ZHAI Cheng
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Meikuang Anquan, 2022 In order to solve the problem of low gas drainage concentration in high-gas and low-permeability coal seams, the influence of various characteristic parameters on the pressure relief effect in the process of hydraulic flushing in low-permeability coal ...
JING Junjie, YU Liya, YAN Jing
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Design and Test of a Riding Pontoon Hydraulic Lotus Root Digging Machine
Agriculture, 2022 In order to solve the problem of high labor intensity of a traditional pontoon lotus root machine with manual pushing operation, a riding pontoon digging lotus root machine was proposed in this paper.
Ming Tu +6 more
doaj +1 more source
Geofluids, 2021 Hydraulic flushing drilling technology can not only improve the efficiency of high-pressure and low-permeability geological reservoir coalbed methane drainage but also effectively reduce the probability of coal and gas outburst disasters through pressure
He Yang +4 more
doaj +1 more source
Hydraulics of a sewer flushing gate
Water Science and Technology, 2003 This paper presents field experiments carried out in a 1.8 m height egg-shaped sewer in Lyon, France in order to contribute to the knowledge and the simulation of Hydrass flushing gates. The main results are: i) definition of an empirical relationship giving the flow discharged by the gate as a function of the upstream water level and its use in ...
J L, Bertrand-Krajewski +3 more
openaire +2 more sources