非成岩天然气水合物固态流化模拟实验装置的研制及应用

doi:10.13722/j.cnki.jrme.2019.0415

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摘要针对固态流化法射流采掘过程中涉及的多喷嘴组合破碎效应、腔体成形特性、固相粒度分布规律、腔内流场特性和固相运移特性等科学问题，自行研制了一套大型水射流固态流化模拟实验装置。该装置主要包括压力水发生及控制设备、井下工艺模拟装置、抽吸举升模拟设备、数据采集与控制系统和辅助装置5个部分。该装置主要优势在于：利用射流采掘不破坏水合物相态平衡的特点，忽略相态因素简化实验条件，并基于相似材料原理制作了一种水合物替代试样，以此实现对射流采掘过程中多喷嘴径向射流下矿物大范围破碎过程和矿物颗粒有效回收过程的直接模拟。利用该实验装置对南海试采实验中射流采掘过程原尺度模拟，探究了水合物储集层临界破碎速度、采空区直径和固态流化效果。该套实验装置为固态流化工艺射流采掘专用井下装备的研发和工艺参数的优化提供了首套实验平台，对固态流化工程实施具有实际意义。

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	杨浦1
	王国荣1
	周守为2
	3
	李清平4
	钟林1
	付强4
	王雷振1
	张计春1

关键词 ：采矿工程, 天然气水合物, 固态流化开采, 射流破碎, 实验装置, 采矿工艺模拟

Abstract：In order to research the scientific problems involved in fluidization mining of solid fluidization method，such as the crushing effect of multi-nozzle combination，the forming rule of the cavity，the particle size distribution，the flow field characteristics in the cavity and the solid phase transport characteristics，a new large-scale laboratory simulation experiment device of soled fluidization is developed independently，which mainly includes five parts：pressure water generation and control equipment，process simulation device，suction and lift simulation equipment，data acquisition and control system and auxiliary equipment. The jet mining characteristic is that it does not destroy the phase equilibrium of hydrate. The experiment device simplifies the experimental conditions by ignoring the phase factors and find a hydrate replacement sample based on the principle of similar materials，so as to directly simulate the large-scale crushing process of minerals under the multi-nozzle radial jet and the effective recovery process of mineral particles in the solid-state fluidization process. The original scale simulation of the jet mining process in the production test in South China Sea was carried out by using the experimental device. The critical velocity of the gas hydrate，diameter of gob areas and the solid fluidization effect were explored. The experimental device provides the first set of experimental platform for the development of the special solid fluidization equipment and the optimization of the jet mining process. These have practical meaning for engineering implementation of solid fluidization.

Key words： mining engineering natural gas hydrate solid fluidization jet breaking experimental device mining process simulation

引用本文:

杨浦1，王国荣1，周守为2，3，李清平4，钟林1，付强4，王雷振1，张计春1. 非成岩天然气水合物固态流化模拟实验装置的研制及应用[J]. 岩石力学与工程学报, 2019, 38(S2): 3512-3519.
YANG Pu1，WANG Guorong1，ZHOU Shouwei2，3，LI Qingping4，ZHONG Lin1，FU Qiang4，WAGN Leizhen1，ZHANG Jichun1. Development and application of solid fluidization simulation experimental device for Non-diagenetic Gas Hydrate. , 2019, 38(S2): 3512-3519.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2019.0415 或 http://rockmech.whrsm.ac.cn/CN/Y2019/V38/IS2/3512

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