金刚石串珠绳锯切缝煤层实验装置的研制  

Development of Experiment Device for Slitting Coal Seam with Diamond String Saw

作　　者：汤铸[1,3,4] 李树清 黄飞[1,2] 朱颜平[1,3] 杨党震 TANG Zhu;LI Shuqing;HUANG Fei;ZHU Yanping;YANG Dangzheng(Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China;Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China;School of Resources,Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;School of Mining&Civil Engineering,Liupanshui Normal University,Liupanshui 553004,China)

机构地区：[1]湖南科技大学南方煤矿瓦斯与顶板灾害预防控制国家安全生产重点实验室,湖南湘潭411201 [2]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201 [3]湖南科技大学资源环境与安全工程学院,湖南湘潭411201 [4]六盘水师范学院矿业与土木工程学院,贵州六盘水553004

出　　处：《矿业工程研究》2021年第3期34-39,共6页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(51974121;51804115);湖南省自然科学基金资助项目(2019JJ40083);南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室开放基金资助项目(E21723)。

摘　　要：为解决传统绳锯实验机具与采矿相似模拟台架难匹配的问题,研制一种金刚石串珠绳锯切缝煤层的实验装置,用于绳锯连续割缝煤层卸压机理的研究.根据绳锯切缝煤层现场布置方式及结构特点,设计并改装绳锯切缝煤层相似模拟实验装置,经多次实验证明,该装置结构简单、绕绳方式灵活、操控方便,可实现煤层水平连续切缝.基于该实验装置的绕绳方式和串珠绳的线弹性,分析实验中绳锯进给状态时串珠绳受拉后弹性形变的总长,据此给出串珠绳张紧力的计算方法.研究结果表明:该装置选用初始总长6000 mm直径2 mm的串珠绳进行实验,弓角18°时串珠绳总长6014 mm,张紧力为0.197 kN,可以满足绳锯连续切缝煤层相似模拟实验的要求.Experimental research is a common method to analyze mining engineering problems.In order to solve the problem that the traditional wire saw cutting experimental equipment is difficult to match with the mining similar simulation bench,an experimental device is developed,which can be used for the study of pressure relief mechanism of continuous cutting seam coal seam by diamond string bead wire saw.According to the on-site layout and structural characteristics of wire saw cutting coal seam,a similar simulation experimental device for wire saw cutting coal seam is designed and refitted.It has been proved by several experiments that the device has the advantages of simple structure,flexible winding method and convenient operation,and can realize continuous cutting seam horizontally.Based on the winding method of the experimental device and the linear elasticity,the total length of elastic deformation of the string rope after pulling is analyzed when the rope saw is in the feeding state,and the calculation method of the string rope tension force is obtained accordingly.Results show that the device selects the bead rope with an initial length of 6000 mm and a diameter of 2 mm to carry out the experiment.The total length of the string rope is 6014 mm and the tension force is 0.197 kN at the deflection angle of 18°,which proves that the device can meet the requirements of similar simulation experiment of the continuous cutting seam of the rope saw.

关 键 词：金刚石串珠绳锯 煤层切缝 张紧力 实验装置 

分 类 号：TD823[矿业工程—煤矿开采]