This paper introduces new technology with minor diameter resin grouting combined anchor pretensional cable anchor under small coal pillar ,structure and mining-induced in S520 main haulageway of Changcun coal mine,it analyzes reinforcing results of roadway and evaluates technical economical results.

常村煤礦S52 0運輸大巷在小煤柱成人黄色网站18、構(gòu)造和采動多重影響條件下肏屄视频久久网，采用小直徑樹脂注漿聯(lián)合錨固預(yù)應(yīng)力錨索新技術(shù)；分析和評價了巷道加固效果和技術(shù)經(jīng)濟效

In this paper,the deformation law of supporting coal pillar at Sanbula district is analyzed by using numerical simulation and the reasonable size of coal pillar and the parameter of bolt in the entry is got.

采用數(shù)值模擬方法對天隆集團公司三不拉采區(qū)支撐煤柱的變形規(guī)律進行分析先锋影音最新色资源在线观看，得出了該采區(qū)的合理支撐煤柱尺寸以及巷道錨桿支護參數(shù)99精品久久精品在免费线18，對設(shè)計和施工有參考作用。

In order to determine the size of coal pillar scientifically and reasonably, we mainly studied the law of stress distribution of the surrounding rock and the mechanism of narrow pillar drift and high strength bolt support and so on, indicating that using the narrow pillar drift and high strength bolt support can effectively guarantee the stability of gob-side entry in deep mine.

為科學(xué)合理地確定煤柱尺寸riav视频，保證沿空巷道的穩(wěn)定韩国无码视频免费观看，研究了沿空巷道的圍巖應(yīng)力分布規(guī)律、小煤柱護巷機理以及高強錨桿支護2021国内自拍偷拍。從理論上證明了采用小煤柱護巷及高強錨桿支護方式理論上能夠有效地保證深井沿空巷道的穩(wěn)定色惰中老年妇女毛片视频。

coal pit：煤礦,煤窯

coal pillar thrust | 煤柱壓碎 | coal pit | 煤礦,煤窯 | coal plant | 煤中所含的樹木化石

coal pile trimmer：煤堆修整器

coal picker ==> 選煤機 | coal pile trimmer ==> 煤堆修整器 | coal pillar thrust ==> 煤柱壓碎

coal pinch out：煤層尖滅

coal pillar thrust ==> 煤柱壓碎 | coal pinch out ==> 煤層尖滅 | coal pit ==> 煤坑,煤礦