5 results about "Cut and fill" patented technology

The location of auxiliary drainage systems in a field is mechanically designed based on field preparation information. [Solution] The auxiliary drainage design method (S1) includes an acquisition step (S11) of acquiring the boundary line of the target field, a cut-and-fill construction map showing the extent of cut and fill of the field, and the location of the field's drainage outlet; a reference drainage line generation step (S12) of searching for the longest straight line from the drainage outlet location to the boundary line and generating it as a reference drainage line; a first auxiliary drainage line generation step (S13) of rotating the reference drainage line by a predetermined angle with respect to the reference drainage line centered on the drainage outlet location to generate a first auxiliary drainage line from the drainage outlet location to the boundary line; and a second auxiliary drainage line generation step (S14) of generating a plurality of second auxiliary drainage lines from the reference drainage line to the boundary line, taking into account the extent of the fill.

The invention relates to the technical field of mining. The invention discloses a pre-control top height drift filling mining method for hanging wall extremely broken ore bodies, which comprises the following steps: dividing a stoping drift and a stoping unit based on the ore bodies, and the stoping drift comprises an upper stoping drift and a lower stoping drift; arranging an upper layer connection way to be communicated with the upper stoping access road, and arranging a lower layer connection way to be communicated with the lower stoping access road; a first-step stoping unit and a second-step stoping unit are arranged at intervals in the width direction of the ore body based on the stoping units; the lower stoping drift of the first-step stoping unit of the first part is mined through the lower-layer connection gateway; and mining an upper stoping access road of the first-step stoping unit of the first part through upper layer connection. The stoping drift structure is designed in a zoning mode, high-drift and large-stope structural parameter mining of the broken ore body is achieved, the production capacity of the drift filling mining method is improved, and the stability of hanging wall surrounding rock of the easily-broken ore body can be guaranteed.

The invention discloses a mechanized plum-blossom-shaped sublevel filling mining method, and belongs to the technical field of mine engineering.By designing stope units with plum-blossom-shaped horizontal projections, room stopes and pillar stopes are divided in the same sublevel according to the principle of mining one by one, the pillar stopes are located between the two room stopes, the pillar stopes serve as recoverable units, and the recoverable units can be recycled; according to the technical scheme, the high-strength filling bodies are formed by stoping the room stopes and filling the room stopes, and the pillar stopes located between the two filling bodies are stoped after the strength of the filling bodies reaches the standard, so that permanent pillars are converted into the pillar stopes capable of being stoped, permanent waste of pillar resources is avoided, and the recovery rate of resources in the panel is increased. The stopes of the upper and lower adjacent sections are designed to be staggered in a regular triangle shape, so that the load of the overlying strata is uniformly transmitted to the surrounding stable ore rocks through the filling body of the lower section, and local stress concentration is avoided.

This invention relates to the field of railway subgrade design, specifically to a railway subgrade design method and apparatus based on a rule engine. The method includes acquiring basic engineering data of the railway subgrade design section, including slope height, soil type, cut and fill type, and groundwater depth; performing rule matching processing on the basic engineering data using a preset design rule library to obtain candidate design schemes; calculating multi-dimensional indicators based on the candidate design schemes to obtain evaluation indicator information corresponding to each candidate design scheme; performing weight adaptive configuration processing on the evaluation indicator information corresponding to each candidate design scheme based on the basic engineering data to obtain an evaluation indicator weight vector; and performing multi-objective optimization decision processing based on the evaluation indicator weight vector and the evaluation indicator information to obtain the railway subgrade design scheme. This invention comprehensively improves the intelligence level and decision quality of railway subgrade design.