The present invention provides a composite supporting structure combining fabric-form bag-behind-wall grouting and high-strength support frames and a construction method thereof, relating to the field of underground engineering support. The composite supporting structure comprises multiple sections of composite supporting units sequentially arranged in a longitudinal direction, wherein each of the composite supporting units comprises support frame, circumferential fabric-form bags are arranged outside top plate sections and side sections of the support frames, and longitudinal fabric-form bags and longitudinal supports are arranged in an alternating manner outside bottom plate sections of the support frames. The present invention forms an active-passive combined full-section composite high-strength supporting structure that may solve the problems of support difficulties such as high ground pressure, strong disturbance and the like of deep wells.

The present invention provides a composite supporting structure combining fabric-form bag-behind-wall grouting and high-strength support frames and a construction method thereof, relating to the field of underground engineering support. The composite supporting structure comprises multiple sections of composite supporting units sequentially arranged in a longitudinal direction, wherein each of the composite supporting units comprises support frame, circumferential fabric-form bags are arranged outside top plate sections and side sections of the support frames, and longitudinal fabric-form bags and longitudinal supports are arranged in an alternating manner outside bottom plate sections of the support frames. The present invention forms an active-passive combined full-section composite high-strength supporting structure that may solve the problems of support difficulties such as high ground pressure, strong disturbance and the like of deep wells.

A two-way structural system for construction, comprising a base part (1) with a plurality of longitudinal channels (1.1) and a plurality of transverse channels (1.2) that are evenly 5 distributed, a stiffening part (2) with a plurality of holes (2.3) along the sheets (2.1, 2.2); wherein both parts (1 and 2) are made of FRP material, and wherein the stiffening part (2), in an operational position, is connected by resting on the base part (1) and fitting into the corresponding channels (1.1, 1.2), defining a cavity in the channels (1.1, 1.2) between both parts (1, 2) to be filled with fibre-reinforced concrete, the assembly forming an integral structure once the concrete has set, and both parts (1.1, 1.2) being configured as a self-supporting structure against the pouring of the concrete. A building method for constructing bridges, tunnels and underground works, with the two-way structural system.

The present disclosure relates to the technical field of stability control of surrounding rock of tunnelling, and provides an excavation compensation method for tunnelling in deep rock engineering, including: acquiring an engineering geological information of the tunnelling in deep rock engineering; determining an engineering hazard type based on the engineering geological information; determining an excavation compensation support strategy for the surrounding rock of the tunnelling in deep rock engineering based on the engineering hazard type; and performing a supplementary support control on the surrounding rock of the tunnelling in deep rock engineering based on the excavation compensation support strategy. Through the supplementary support strategy, the difference value between a radial stress of the surrounding rock of the tunnelling in deep rock engineering and an initial crustal stress can be reduced to within a preset approximate value range, further effectively preventing a stress concentration phenomenon occurred in a tangential stress.

A pressure-controlled tunnel directional grouting reinforcement device is provided. Some embodiments of the present disclosure utilize the pressure generated during the concrete injection serves as a power source, and changes the directional movement of the front conical block, the rear conical block, and the actuated sleeve valve inside the interface pipe. This allows the concrete grout to be injected in a relatively low-pressure state and to be injected into an inner structural layer in a relatively low-pressure and stable state. The objective is to preserve the high-pressure state of the concrete grout during injection, and to reduce the damaging effects caused by high-pressure erosion of the concrete grout on the inner structural layer. To reduce the damaging effects of the high-pressure erosion on the inner structural layer by the concrete grout. An active pressure compensation is further employed to interfere with a pressure fluctuation state of the concrete grout.

A processing train configured to run along a tunnel to lay a solidifiable fluid material on a wall of the tunnel and allow the solidifiable fluid material to solidify for construction of a lining of the tunnel, an advancement system for advancing the sliding form, a closing edge for closing a space between a front edge of the sliding form and the wall of the tunnel, and spouts for dispensing the solidifiable fluid material around a front segment of the sliding form. A method for constructing a lining of a tunnel with the solidifiable fluid material involves, defining an interspace between the front segment of the sliding form and the wall of the tunnel, introducing the solidifiable fluid material into the interspace and, after hardening time, advancing the sliding form to form a new interspace and successive lining sections.