張家峁煤礦綜采工作面礦壓規(guī)律研究

摘  要
張家峁煤礦地處神府侏羅紀(jì)煤田地方開(kāi)采區(qū)的邊界地帶，屬于淺埋厚煤層。淺埋厚煤層礦井綜采面礦壓顯現(xiàn)在礦井開(kāi)采初期尤其突出，嚴(yán)重影響工作面的安全生產(chǎn)，因此有必要對(duì)張家峁礦15203綜采面礦壓規(guī)律進(jìn)行研究。
本文以神木張家峁煤礦綜采工作面礦壓顯現(xiàn)為背景，采用工程調(diào)查、現(xiàn)場(chǎng)監(jiān)測(cè)數(shù)據(jù)采集和理論分析等方法。對(duì)張家峁礦15203綜采面礦壓規(guī)律進(jìn)行了研究。
15203綜采面現(xiàn)場(chǎng)觀(guān)測(cè)、工程調(diào)查和理論分析得出老頂初次來(lái)壓步距為54m。周期來(lái)壓步距為15.6m左右；周期來(lái)壓期間支架平均工作阻力達(dá)44.48MPa，非周期來(lái)壓期間之際平均工作阻力約30.65MPa，來(lái)壓強(qiáng)烈，持續(xù)時(shí)間短，工作面中部測(cè)區(qū)有65%支架安全閥開(kāi)啟，說(shuō)明支架額定工作阻力富裕系數(shù)并不大。順槽超前支護(hù)20m能夠滿(mǎn)足護(hù)巷要求，工作面之間20m護(hù)巷煤柱可以滿(mǎn)足要求。
關(guān) 鍵 詞：淺埋煤層；綜采面礦壓規(guī)律；

Subject:Analyses of the Mine Pressure Law of the Face with Fully Mechanized Coal Mining in Zhangjiamao Coal Mine
           
ABSTRACT
Zhangjiamao coal mine is placed in the boader of Shenfu Jurassic coal field in which thick-shallow coal seam is beared. Mine pressure behavior occours frequently in the initial mining stage which seriously influences the safty in the coal face, thus, it is of great necessity to enforce a research of the mine pressure law of the 15203 fully mechanized coal mining face.
The paper took the mine pressure behavior in the fully mechanized coal mining face of Zhangjiamao mine in Shenmu as the background and adopted engineering investigating、field supervision data collecting、theory analyzing and other method to proceed a research of the mine pressure behavior in the face of Zhangjiamao mine.
According to the field observation、engineering investigation and theory anlysis, the length of the frist weighting interval is 54m. The length of periodical weighting interval is about 15.6m. The average working pressure of the support during the periodical weighting period is 44.48MPa and it is about 33.6 mPa ot during periodical weighting period.The pressure, whcih severely occurs, lasts for a short time. And 65% of the safety valves of the supports become open which suggests that the extra coefficients of rated working pressure of the supports are not very high. The requirement can be met with 20m advancing support of the gate way and 20m thick coal pillar between working faces.
Key Words: shallow coal seam         Law of the Face with Fully Mechanized Coal Mining 

 
目  錄
1 緒論 1
1.1 問(wèn)題的提出 1
1.2 研究目的及意義 1
1.3 淺埋煤層礦壓研究現(xiàn)狀 1
1.4 研究?jī)?nèi)容和技術(shù)路線(xiàn) 3
1.4.1 研究?jī)?nèi)容 3
1.4.2 研究技術(shù)路線(xiàn) 3
2 張家峁15203綜采工作面開(kāi)采條件分析 4
2.1 張家峁煤礦15203綜采面概況 4
2.2 15203綜采面礦壓觀(guān)測(cè) 5
3 20115綜采工作面礦壓規(guī)律分析 6
3.1 初次來(lái)壓 6
3.2 周期來(lái)壓 7
4 結(jié)論 11
致  謝 12
參考文獻(xiàn) 13