![\"Rotary](\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2016\/12\/ce993f93e20a955c4b54a2d5c51dc4bd.jpg\")
<\/p>\nHello, everyone.<\/p>\n
This is Enta.<\/p>\n
Every few years, there's a design that's a little weird, lol.<\/p>\n
That's because we're installing ground anchors using a rotary drilling rig.<\/p>\n
It is also known as a spindle-type drilling machine.<\/p>\n
<\/p>\n
Nowadays, these are drilling rigs used for grout injection, soil testing, and\u2014in the case of large-scale equipment\u2014for drilling large-diameter piles using down-the-hole hammers.<\/p>\n
And then the consulting firm\u2019s design comes back telling us to drill holes for ground anchors.<\/p>\n
<\/p>\n
I imagine there are all kinds of consultants out there, but the period during which we were drilling with this drilling machine was roughlyThat was 40 to 50 years ago!<\/span><\/strong><\/span><\/p>\n In a way, I can\u2019t help but wonder, \u201cIs this person pretty old if they\u2019re bringing this machine here?\u201d lol<\/p>\n Sometimes we do drainage drilling, too.<\/p>\n There's nothing we can't do\u2014as long as the hole stands on its own after drilling.<\/p>\n But it\u2019s not every day you come across a mountain where a hole stands on its own.<\/p>\n <\/p>\n When a borehole is said to be self-supporting, it means that even after the casing is removed following drilling, the borehole remains intact and stable.<\/p>\n This is the casing.<\/p>\n <\/p>\n After removing the casing, we insert the anchor body, but,<\/p>\n If mud or other debris adheres to the anchor body\u2019s embedment length at that time, it may interfere with the anchor\u2019s performance.<\/p>\n For this reason, double-pipe drilling is the standard method for ground anchor construction.<\/p>\n <\/p>\n Since drilling is generally performed using the double-pipe method, a rotary percussion drill is used.<\/p>\n This is the skid-type system.<\/p>\n This is a crawler-type rotary percussion machine.<\/p>\n <\/p>\n This drilling rig is essential for ground anchor construction.<\/p>\n Incidentally, drilling with a rotary drill takes about 10 to 25 times longer than with a standard drill. (Based on cumulative time)<\/p>\n <\/p>\n To all consultants.<\/p>\n Rotary percussion drilling is the standard method for drilling holes in ground anchor and drainage well construction.<\/p>\n If you're really stuck, please feel free to ask for help. (We get a lot of questions like this.)<\/p>\n We often get inquiries about construction on small lots or moving heavy equipment.<\/p>\n When we get a design on site that doesn't fit the current situation, it ends up requiring a design change right from the start, which is a pain lol.<\/p>\n If we\u2019re going to do this anyway, we might as well choose the right equipment from the start\u2014that way, the rest is up to the contractor.<\/p>\n <\/p>\n See you later.<\/p>\n Hello, everyone. This is Enta. Every few years, we come across a design that\u2019s a little unusual, lol. I\u2019m talking about ground anchor installation using a rotary drilling rig. It\u2019s also known as a spindle-type drilling rig. These days, we use it for grouting and soil testing, and with larger machines, we use down-the-hole hammers\u2026<\/p>","protected":false},"author":2,"featured_media":45365,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[28,43],"tags":[126,426,3794,4998,4999,5000],"class_list":["post-46210","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ground-anchor","category-issues","tag-126","tag-426","tag-3794","tag-4998","tag-4999","tag-5000"],"acf":[],"yoast_head":"\n![\"Casing\"](\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/01\/9f1b0f44d07d812c19e74ae1dd921f1e.jpg\")
<\/p>\n![\"Drilling](\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/10\/1d9e11079cba21f7c7f2312a27014563.jpg\")
<\/p>\n![\"130C\u2162A\"](\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2021\/10\/2021-10-08-11.03.32.jpg\")
<\/p>\n<\/div>
Shin-Ent's Slope Management Seminar<\/div><\/div>Shin-Ent's Slope Management Seminar<\/div>\ud83d\udd52\ufe0f<\/div>For those of you who are serious about learning about slopes!<\/div><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"