【摘要】：采區(qū)上山保護(hù)煤柱的長期穩(wěn)定性對礦井安全生產(chǎn)具有重要影響,針對孔莊煤礦典型深部開采中IV1采區(qū)上山保護(hù)煤柱的蠕變變形及長期穩(wěn)定性問題,采用現(xiàn)場實(shí)測、蠕變試驗(yàn)及數(shù)值模擬相結(jié)合的方法開展研究�，F(xiàn)場實(shí)測表明,7433工作面超前支承壓力明顯影響范圍為73 m�；谌渥冊囼�(yàn)結(jié)果,采用改進(jìn)的Burgers模型回歸求得煤樣蠕變參數(shù),在此基礎(chǔ)上,對煤柱的蠕變特性及長期穩(wěn)定性進(jìn)行了數(shù)值模擬計算。結(jié)果表明,當(dāng)煤柱寬度大于85 m時,再增加煤柱寬度,其趨于穩(wěn)定的時間及蠕變變形量相差不大,當(dāng)煤柱寬度小于85 m時,隨著煤柱寬度減小,煤柱趨于穩(wěn)定的時間越來越長,變形量也逐漸增大�？紤]深井煤柱的長期穩(wěn)定性,IV1采區(qū)上山保護(hù)煤柱的合理寬度不應(yīng)小于85 m。礦壓監(jiān)測結(jié)果表明,監(jiān)測期內(nèi)上山保護(hù)煤柱處于較好的穩(wěn)定狀態(tài)。
[Abstract]:The long-term stability of Shangshan protective pillar in the mining area has an important influence on the safety of mine production. In view of the creep deformation and long-term stability of the IV1 coal pillar in the typical deep mining area of Kongzhuang Coal Mine, the field measurement is adopted. The method of combining creep test with numerical simulation is studied. The field measurement shows that the influence range of leading supporting pressure in 7433 face is 73 m. Based on the creep test results, the creep parameters of coal samples are obtained by using the improved Burgers model. On the basis of this, the creep characteristics and long-term stability of coal pillars are numerically simulated. The results show that when the width of coal pillar is larger than 85 m, when the width of coal pillar is larger than 85 m, the time of stabilization and creep deformation is not much different. When the width of coal pillar is less than 85 m, the time of stabilization of coal pillar becomes longer and longer as the width of coal pillar decreases. The deformation also increases gradually. Considering the long-term stability of deep coal pillar, the reasonable width of IV1 coal pillar should not be less than 85 m. The monitoring results of mine pressure show that the coal pillar of mountain protection is in a good stable state during the monitoring period.
【作者單位】： 山東科技大學(xué)礦業(yè)與安全工程學(xué)院礦山災(zāi)害預(yù)防控制省部共建國家重點(diǎn)實(shí)驗(yàn)室培育基地;山東農(nóng)業(yè)大學(xué)水利土木工程學(xué)院;西山煤電(集團(tuán))有限責(zé)任公司馬蘭煤礦;
【基金】：國家自然科學(xué)基金項(xiàng)目(51379116,51574156) 山東省自然科學(xué)基金重點(diǎn)項(xiàng)目(ZR2013EEZ001)
【分類號】：TD822.3

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 孫森,韓波,劉立志;采區(qū)上山的優(yōu)化設(shè)計[J];煤礦開采;2001年S1期

2 ;謝家集二號井13槽采區(qū)上山及車場布置問題[J];煤礦設(shè)計;1958年02期

3 李慶陽;;采區(qū)上山架空乘人裝置的選型及安裝[J];工礦自動化;2011年09期

4 ;白洞采區(qū)上山甩車道布置及掘進(jìn)工作面煤的運(yùn)輸問題[J];煤礦設(shè)計;1958年02期

5 李志;李增力;;102采區(qū)上山長距離巖巷掘進(jìn)后運(yùn)皮帶化技術(shù)研究[J];科技資訊;2010年17期

6 況禮澄;楊錫成;;煤層群采區(qū)上山布置的優(yōu)化[J];貴州工學(xué)院學(xué)報;1983年04期

7 吳未萍;曾廣強(qiáng);彭國純;;青山礦五水平采區(qū)上山組布置方案優(yōu)化[J];江西煤炭科技;2012年04期

8 丁紹安;;采區(qū)上山布置與區(qū)段平巷布置探討[J];科技創(chuàng)業(yè)家;2013年07期

9 張紅星;;孫疃礦采區(qū)運(yùn)輸人行上山合一技術(shù)應(yīng)用[J];中國新技術(shù)新產(chǎn)品;2010年17期

10 翟新獻(xiàn);多煤層采區(qū)上山與煤柱之間的關(guān)系[J];煤炭學(xué)報;2002年01期

，

本文編號：2449322