Bolting technology in recent years, the rapid development of rock in the coal mine tunnel control applications are increasingly widespread, particularly in Australia and Britain, and other advanced countries, bolting technology, China is also studying the extension bolt supporting technology.

近年來錨桿支護(hù)技術(shù)快速發(fā)展久草视频免费在线，在煤礦巷道圍巖控制中的應(yīng)用也越來越廣泛8x国产精品V片在线，尤其是在澳英等錨桿支護(hù)技術(shù)先進(jìn)國家，我國也在研究推廣錨桿支護(hù)技術(shù)禁16无码黄片。

Chapter three makes clear the importance of preload ,and deals with the theories on the relationship between preload and torque, angle and extension of the bolt from various aspects.

第三章由扭矩控制的實質(zhì)——預(yù)緊力国产在线你懂得，點明了預(yù)緊力的重要性国产精品福利日韩，預(yù)緊力與擰緊力矩、螺母轉(zhuǎn)角18Jizz高潮合集、螺栓伸長的關(guān)系操逼黄色视频免费看，對其進(jìn)行了理論方面的研究和探討。

In order to meet the new anchoring technology development required for the mechanical parameters of bolt body put forward a special request, I plant developed the advanced technology of equipment has been improved so that the bolt will not only meet the molding geometry, at the same time on mechanical parameters, the limit is to ensure the anti-rally, but also to enable an extension rate of bolt technical requirements.

為適應(yīng)錨固技術(shù)發(fā)展的新需要国产无遮挡裸体免费视频不卡，對錨桿體的力學(xué)參數(shù)提出了特殊的要求久久亚洲精品人成综合网，我廠開發(fā)了先進(jìn)的工藝對設(shè)備進(jìn)行了改進(jìn)，使成型的錨桿不僅滿足幾何尺寸专看一级黄色片的网站，同時在力學(xué)參數(shù)上87人人操人人爱，既保證了極限抗拉力，又使錨桿的延伸率達(dá)到技術(shù)要求欧美性爱地址。

The flywheel was connected to the clockwork-type spring, and had a projection on one side, which entered the vertical cam track, cut in the rear extension of the bolt.

飛輪是連接到發(fā)條型彈簧，并于一方国产精自拍，而進(jìn)入軌道的垂直凸輪在削減螺栓后方延伸超碰在线免费精品，投影。

Considering the theory of roadway support in soft rock, we proposed an active support mode based on study of rheology of weak adjacent rock, complex stress environment, and destabilization of original supports. Fully grouted bolt, extension grouted cable that can strengthen self-bearing capacity and entirety are used. Original support scheme and reinforcement scheme are simulated by means of FLAC(superscript 3D).

在分析硐室圍巖巖性亚洲激情图片视频、軟弱圍巖流變国产日韩欧美丝袜、復(fù)雜應(yīng)力環(huán)境及原支護(hù)結(jié)構(gòu)失穩(wěn)的基礎(chǔ)上，結(jié)合軟巖巷道圍巖控制理論韩国日本黄色视频，提出了以全長錨固錨桿欧洲免费A区B区视频、錨索增強圍巖整體性和自承載能力的主動支護(hù)，并以底板錨注加底拱返修加固国产视频92。

extension bolt：拉力螺栓,接長螺栓

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extension bolt：擰接螺栓

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transmission drain extension bolt：變速箱排放加長管螺栓

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