鉆屑量與礦山壓力及瓦斯壓力關系現場實驗研究

尹光志; 李曉泉; 趙洪寶; 李小雙; 李高帥

doi:10.13374/j.issn1001-053x.2010.01.004

鉆屑量與礦山壓力及瓦斯壓力關系現場實驗研究

doi: 10.13374/j.issn1001-053x.2010.01.004

尹光志^1,2,
李曉泉^1,2,
趙洪寶^1,2,
李小雙^1,2,
李高帥^1,2

1. 重慶大學資源及環境科學學院, 重慶 400030;
2. 重慶大學西南資源開發及環境災害控制工程教育部重點實驗室, 重慶 400030

基金項目:

國家自然科學基金資助項目（No.50874124）；國家科技重大專項（No.2008ZX05034-002）；國家重點基礎研究發展計劃資助項目（No.2005CB221502）；重慶市自然科學基金計劃重點項目（No.CSTC.2008BA6028）

詳細信息

作者簡介:
尹光志(1962-),男,教授,博士生導師,E-mail:gzyin@cqu.edu.cn

中圖分類號: TD323
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- 被引次數: 0
出版歷程
- 收稿日期: 2009-03-18

In-situ experimental study on the relation of drilling cuttings weight to ground pressure and gas pressure

1. College of Resource and Environmental Sciences, Chongqing University, Chongqing 400030, China;
2. Key Laboratory of the Ministry of Education for the Exploitation of Southwest Resources and the Environmental Disaster Control Engineering, Chongqing University, Chongqing 400030, China

摘要

摘要: 基于在重慶天府礦業有限責任公司三匯一礦2124綜采工作面的現場實驗,對該礦鉆屑量與礦山壓力、瓦斯壓力的關系進行了研究.表明工作面經過鉆孔卸壓后的礦山壓力分布規律:卸壓區寬度約為5 m,5～11 m為塑性區,11～20 m為彈性區,20 m以后為原始應力區.在嚴格按照操作規程要求施鉆的前提下,鉆屑量在礦山應力峰值前呈線性增加,峰值后呈線性減少.結合長壁工作面礦山壓力、瓦斯壓力分布規律理論分析,推導出鉆屑量與礦山壓力、瓦斯壓力之間存在正相關關系;在固定瓦斯壓力時,鉆屑量隨著礦山壓力正向變化;在相同礦山壓力時,鉆屑量隨著瓦斯壓力正向變化.
- 煤與瓦斯突出 /
- 鉆屑 /
- 礦山壓力 /
- 瓦斯壓力
Abstract: The relation of drilling cuttings weight to ground pressure and gas pressure was investigated by in-situ experiment on the 2124 fully mechanized coal mining face of Sanhui Mine in Chongqing Tianfu Coal Industry Co.,Ltd.The distribution of ground pressure after drilling was obtained as the following: the stress-relief zone width of about 5 m,the location of the plastic zone at 5 to 11 m,the location of the elastic zone at 11 to 20 m,and the location of the original stress zone beyond 20 m.The drilling cuttings weight linearly increased before the peak ground pressure and decreased after it under the premise of drilling in strict accordance with the operating rules.Based on the theoretical analysis of ground pressure and gas pressure on the longwall mining face,a positive relation of drilling cuttings weight to ground pressure and gas pressure was deduced.The drilling cuttings weight positively changed with ground pressure at the fixed gas pressure or with gas pressure at the fixed ground pressure.
- coal and gas outburst /
- drilling cuttings /
- ground pressure /
- gas pressure