オンライン カジノ 稼げる Reinforcement Work

オンライン カジノ 稼げる REINFORCEMENT WORK

Bedrock PS anchor of オンライン カジノ 稼げる

The オンライン カジノ 稼げる, located upstream of the Kinugawa River in Tochigi Prefecture, is an arch dam with a height of 117m constructed in 1966 for flood control to prevent river flooding, supply agricultural water, and power generation.
Arch dam with a structure that bears water pressure from the reservoir by transmitting most of the water pressure to the bedrock on both banks.
At オンライン カジノ 稼げる, to increase the strength of the bedrock that supports the arch action, bedrock improvement work using bedrock PS anchors (rock PS work at that time), which was the most advanced technology of those time, was adopted.

In this reinforcement work, while maintaining the function of the オンライン カジノ 稼げる, new bedrock PS anchors, one of the largest in Japan with a maximum length of 75m and a maximum tensile force of 2,400KN, will install between the existing bedrock PS anchors which were installed at the time of オンライン カジノ 稼げる construction.



At the time of the オンライン カジノ 稼げる construction, an arch thrust receiving wall (transmitting wall: TW) was constructed in the weak part of the left bank, and from the gallery installed in the TW, the mountain side (inner direction) and riverside (ground surface direction) was installed bedrock PS anchor. TW is a concrete wall that transmits the thrust acting near the abutment (*1) of an arch dam.
*1 Abutment
Slopes on both banks of the valley where the オンライン カジノ 稼げる body is installed

The circumstance of TW and anchor installation in 1966

In this renewal work, since the TW was filled with concrete and the オンライン カジノ 稼げる itself is in service, it could not be constructed in the same way as at the time of construction. Therefore, this time, when some of the bedrock PS anchors on the left bank pass the TW, by tensioning them in two stages, a technique called "two-stage tension" was adopted. In this way, a prestress to the bedrock is applied in the same way as at the time of construction.

The circumstance of renovation work of this time by "two-stage tensioning"

The intermediate part of the two-stage tensioning method adopted at the オンライン カジノ 稼げる used a highly economical cloth packer (*2). The cloth packer was jointly developed by the Dam Technology Center and オンラインカジノ for this renovation work.
In addition, the 90m-high work platform (work scaffolding), which was installed to cling to a steep precipice to install a huge bedrock PS anchor, is an individual technology of the オンライン カジノ 稼げる renovation work.
*2 Packer
A component for surely grouting into the anchorage.

Inspection circumstance by the オンライン カジノ 稼げる Bedrock PS Committee

Under the guidance of the Bedrock PS Committee, which is composed of academics from the public and private sectors, we reliably install high-quality bedrock PS anchors.