To all relevant units and experts:

According to the standard formulation and revision plan of the China Highway & Transportation Society (CHTS), the CHTS standard "Technical Specifications for Design and Construction of Highway Tunnels Crossing Active Fault Zones," jointly edited by CCCC Second Highway Consultants Co., Ltd. and the Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, has formed a draft for comments (Attachment 1). In accordance with the requirements of the "Measures for the Management of CHTS Standards (Trial)" and the "Guidelines for the Management of Formulation and Revision of CHTS Standards (Trial)," public comments are now being solicited. All units and individuals are kindly requested to respond positively and provide feedback voluntarily.

The "Comment Feedback Form" (Attachment 2) must be submitted to the contact person by June 11, 2024. If no reply is received before the deadline, it will be deemed that there are no objections. Representatives of units and individuals who provide high-quality comments will be invited as experts to attend the review meeting for the draft for examination.

Preparation process and brief introduction: The "Technical Specifications for Design and Construction of Highway Tunnels Crossing Active Fault Zones" was initiated in January 2023 and passed the outline review in March. This specification sets out provisions on the investigation, materials, design, construction, auxiliary works, and structural safety monitoring of highway tunnels crossing active fault zones. It is applicable to the construction and reconstruction/expansion of highway tunnels crossing active fault zones, mainly excavated by the drill-and-blast method.

Contact: Ma Yalina

Tel: 13125189983

Email: mayalina@126.com

Address: No. 18 Chuangye Road, Wuhan Economic and Technological Development Zone, Hubei Province

CCCC Second Highway Consultants Co., Ltd.

Attachment 1:"Technical Specifications for Design and Construction of Highway Tunnels Crossing Active Fault Zones" (Draft for Comments).pdf

China Highway & Transportation Society

May 11, 2024