构造带综放工作面支架异常压力机理探讨

›› 2006, Vol. 27 ›› Issue (S1): 266-269.

构造带综放工作面支架异常压力机理探讨

史红^{1 2 3}，姜福兴²，李连祥⁴

1. 山东交通学院土木工程系济南 250023；2. 北京科技大学土木与环境工程学院，北京 100083；3. 山东农业大学水利土木工程学院泰安 271018；4. 山东科技大学泰安 271019

收稿日期:2006-04-21 发布日期:2006-12-15
作者简介:史红,女，1968年生，博士，在站博士后，副教授，主要研究方向为矿山岩体力学与工程。
基金资助:
国家自然科学基金重大国际合作基金（50320120001）;山东农业大学青年科技创新基金

Study on mechanism of abnormal pressure on support in fully mechanized sublevel caving face at geologic changing

SHI Hong^1,2,3，JIANG Fu-xing²，LI Lian-xiang⁴

1. Department of Civil Engineering, Shandong Jiaotong University, Jinan 250023, China; 2. Beijing University of Science & Technology, Beijing 100083,China；3 College of Hydraulic and Civil Engineering, Shandong Agricultural University, Tai’an 271018, China; 4. Shandong University of Science and Technology, Tai’an 271019, China

Received:2006-04-21 Published:2006-12-15

摘要/Abstract

摘要： 针对多个综放采场出现的支架立柱压爆、油缸变形等异常矿压显现，通过对综放采场上覆岩层的运动范围及运动特点、顶板结构动态稳定性的分析，探讨了综放工作面异常压力产生的机理。得出了顶板结构局部铰接失稳（滑落失稳）是造成异常压力主要原因的结论。由于滑落失稳的原因不同，可分为水浸蚀型、地质构造型和顶板失稳型。通过对综放采场支架作用力的分析，给出了计算异常压力的公式。利用顶板结构动态稳定性判断准则，可对异常压力的类型进行判别，从而进一步确定异常压力的计算方法，为采场支架选型和现场控制异常压力提供理论依据。

关键词: 综放采场, 顶煤放出率, 顶板结构动态稳定性, 滑落失稳, 异常压力

Abstract: Aimed at phenomena of support’s being pressed to burst or be unable to work in a few fully mechanized sublevel caving longwall faces, according to the analysis of the roof structures, their movement characteristics and the dynamic stability in fully-mechanized sublevel caving face, the mechanism of abnormal pressure on support in fully mechanized sublevel caving face is studied. The conclusion is that the main cause of abnormal pressure is sliding of roof structure. Because of the difference of sliding of roof structure, there are three of abnormal pressure. According to the analysis of the pressure on support, the computation formulae of abnormal pressure on support are presented. Using the dynamic stability judgement rules of roof structures, the types of abnormal pressure on support are distinguished and the computation means of abnormal pressure are defined; and the theoretical foundation about the selection of support in fully mechanized sublevel caving face and controlling abnormal pressure at field experiments are provided.

Key words: fully mechanized sublevel caving face, top coal’s recovery ratio, dynamic stability, sliding of roof structure, abnormal pressure

中图分类号:

TD 35

史红，姜福兴，李连祥,. 构造带综放工作面支架异常压力机理探讨[J]. , 2006, 27(S1): 266-269.

SHI Hong ，JIANG Fu-xing ，LI Lian-xiang,. Study on mechanism of abnormal pressure on support in fully mechanized sublevel caving face at geologic changing[J]. , 2006, 27(S1): 266-269.

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