{"id":4834,"date":"2017-10-22T08:00:52","date_gmt":"2017-10-21T23:00:52","guid":{"rendered":"https:\/\/norimen.net\/wordpress\/?p=4834"},"modified":"2026-05-16T22:56:29","modified_gmt":"2026-05-16T13:56:29","slug":"horizontal-boring-for-water-drainage","status":"publish","type":"post","link":"https:\/\/norimen.net\/en\/water-drainage-horizontal-boring\/","title":{"rendered":"Drainage Boring (Horizontal Boring) | Construction Management After a Long Break"},"content":{"rendered":"

Hello, everyone.<\/p>\n

This is Enta.<\/p>\n

Starting next week, I\u2019ll be getting back into construction management\u2014just a little bit, just a tiny bit. Haha.<\/p>\n

The shortage of managers is getting worse at every worksite, isn't it?<\/p>\n

First, I put the chalk and ribbon tape from the office into the car lol<\/p>\n

It\u2019s like, \u201cThis is my very first time on a job site!\u201d<\/p>\n

\"\"<\/p>\n

Since I\u2019ve been working more as a craftsman than a construction manager lately, the stuff I carry around is definitely different, lol.
\n (I say \"craftsman,\" but really, it's just single-hole drilling and moving machinery around, lol)<\/p>\n

But even though it\u2019s called construction management, it\u2019s just drainage boring, so it\u2019s not really that big of a deal, but still...<\/p>\n

\n

But that's beside the point.<\/p>\n

So, today I\u2019m going to write about what exactly \u201cdrainage drilling\u201d is.<\/p>\n

Drainage Boring Worker<\/h3>\n

I'm sure this might leave slope engineers scratching their heads, but this is actually part of an anchor installer's job.<\/p>\n

To put it simply,Force the drainage of water from the mountain to ensure its stability.<\/span><\/strong><\/span><\/p>\n

This is one of the construction methods designed to prevent slippage by draining water that affects the slip layer or by reducing the moisture content of the natural ground to make it lighter.<\/p>\n

The installation process is simple: a double-pipe system is installed using a rotary percussion drill.<\/p>\n

\"\"<\/p>\n

Once you have drilled to the specified length, remove the inner pipe and insert the strainer pipe (VP40 or SGP40).<\/p>\n

\"\"<\/p>\n

SGP pipe = gas pipe
\n VP pipe = vinyl chloride pipe<\/p>\n

It is common practice to machine the connection points with reverse threads, and<\/p>\n

In the case of PVC, if you use a socket connection, the PVC pipe will not fit through a \u03c690 double-wall pipe with a drilled hole.
\n(I can't insert it!)<\/span><\/strong><\/span><\/p>\n

Since the hole diameter is generally 90 mm, please be careful when connecting PVC sockets.<\/span><\/strong><\/span><\/p>\n

We can also machine reverse threads on PVC pipes.<\/p>\n

\"\"<\/p>\n

After inserting the perforated strainer pipe, pull out the outer casing and insert the hole-retaining pipe to a depth of approximately 2 to 4 meters (depending on the design).<\/p>\n

The treatment of the edge at the mouth varies depending on the design.<\/p>\n

After dewatering drilling is performed, the aquifer becomes smaller or the water content decreases, as described above.<\/p>\n

This is a drainage boring machine. (Just a simple explanation, lol.)<\/p>\n

In addition to these, there are various other challenging tasks, such as drainage boreholes connecting collection wells, and collection and drainage boreholes that are nearly 100 meters long.<\/p>\n

Long-distance bowling is difficult, after all, so amateurs can't do it.<\/p>\n

Also, it\u2019s very difficult even if the director is inexperienced.<\/p>\n

Drilling is a craft that\u2019s all the more profound precisely because you can\u2019t see what\u2019s going on beneath the surface.<\/p>\n

It's a battle against water pressure, jamming, and something invisible lol<\/p>\n

For long anchors or long drainage systems, it\u2019s best to hire a professional contractor to minimize mistakes and ensure the project is completed on schedule.<\/p>\n

It\u2019s better to choose a contractor that inspires confidence and a sense of stability.<\/strong><\/span><\/p>\n

 <\/p>\n

See you later.<\/p>\n

\n

Core Die<\/span><\/strong><\/span><\/a><\/p>\n

A Guide to Core Stands<\/span><\/a><\/span><\/strong><\/span><\/p>\n

Manufactured and Sold by Wakazono Seisakusho<\/span><\/span><\/strong><\/span><\/a><\/p>\n

Bolt Scale, Dedicated Box, Clip Spacer, and Greenery Spacer
\n Please see below for inquiries and retail locations.<\/strong><\/h3>\n

Natural Applied Sciences, Inc.<\/span><\/span>
\n <\/a><\/strong>(Slope Greening Materials Group)
\n Phone: 052-212-1441<\/p>\n

Koiwa Wire Mesh Co., Ltd.<\/span><\/a><\/strong><\/span><\/span>
\n (Contact the Chubu Branch)
\n Phone: 0568-75-7710<\/p>\n

Showa Co., Ltd.<\/span><\/span><\/a><\/span><\/strong><\/span>
\n (Kagoshima Prefecture)
\n Tel. 099-296-1234<\/p>\n

Fujiwara Industries Co., Ltd.<\/span><\/a><\/span><\/strong>
\n (Bolt scale only)
\n Phone: 06-6683-0797<\/p>\n

Ura-Tsuji Industries, Inc.
\n <\/span><\/a><\/span><\/strong>(Shimane Prefecture)
\n Phone: 0852-24-6881<\/p>\n

Corporation<\/span><\/span> Tosei<\/span><\/span>
\n <\/span><\/span> <\/strong>(Shizuoka Prefecture)
\n Phone: 054-631-9110
\n Fax: 054-631-9112<\/p>\n

KF Co., Ltd.
\n <\/span><\/a><\/span><\/strong>(Osaka Prefecture)
\n Phone: 072-232-6060<\/p>","protected":false},"excerpt":{"rendered":"

Hello, everyone. It\u2019s Enta here. Starting next week, I\u2019ll be getting back into construction management\u2014just a little bit, just a tiny bit. Haha. The shortage of supervisors is getting worse at every job site, isn\u2019t it? First off, I loaded up my car with chalk and ribbon tape from the office. Haha. This is my very first time going to a job site! I mean\u2026<\/p>","protected":false},"author":2,"featured_media":4840,"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":[90],"tags":[804,805,806,807,808,809,810,811],"class_list":["post-4834","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-drain-boring","tag-804","tag-805","tag-806","tag-807","tag-808","tag-809","tag-810","tag-sgp"],"acf":[],"yoast_head":"\n\u6c34\u629c\u304d\u30dc\u30fc\u30ea\u30f3\u30b0\u5de5\uff08\u6a2a\u30dc\u30fc\u30ea\u30f3\u30b0\uff09\uff5c\u4e45\u3005\u306e\u65bd\u5de5\u7ba1\u7406 - 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content=\"https:\/\/www.facebook.com\/norimenman\/\" \/>\n<meta property=\"article:published_time\" content=\"2017-10-21T23:00:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-16T13:56:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/10\/cd4aed88443ac56767b36e2c30bc48f2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"460\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u30a8\u30f3\u30bf\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@norimenman\" \/>\n<meta name=\"twitter:site\" content=\"@norimenman\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u30a8\u30f3\u30bf\" \/>\n<script type=\"application\/ld+json\" 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